BlackMoon
Threat Scorecard
EnigmaSoft Threat Scorecard
EnigmaSoft Threat Scorecards are assessment reports for different malware threats which have been collected and analyzed by our research team. EnigmaSoft Threat Scorecards evaluate and rank threats using several metrics including real-world and potential risk factors, trends, frequency, prevalence, and persistence. EnigmaSoft Threat Scorecards are updated regularly based on our research data and metrics and are useful for a wide range of computer users, from end users seeking solutions to remove malware from their systems to security experts analyzing threats.
EnigmaSoft Threat Scorecards display a variety of useful information, including:
Popularity Rank: The ranking of a particular threat in EnigmaSoft’s Threat Database.
Severity Level: The determined severity level of an object, represented numerically, based on our risk modeling process and research, as explained in our Threat Assessment Criteria.
Infected Computers: The number of confirmed and suspected cases of a particular threat detected on infected computers as reported by SpyHunter.
See also Threat Assessment Criteria.
| Popularity Rank: | 8,805 |
| Threat Level: | 80 % (High) |
| Infected Computers: | 220 |
| First Seen: | July 22, 2016 |
| Last Seen: | December 27, 2025 |
| OS(es) Affected: | Windows |
The BlackMoon is a banking Trojan that has infected more than 160,000 devices in South Korea. PC security analysts suspect that the con artists responsible for the latest BlackMoon campaign may be Chinese in origin. The BlackMoon may have been responsible for the theft of more than 100,000 banking credentials. This threat is also detected as Banbra or W32/Banbra. This BlackMoon attack was first detected in April of 2016, through the identification of an open access directory that was part of a the BlackMoon Command and Control server. This directory contained personal information about the BlackMoon's victims. The results were astounding: 110,130 victims around that world, 108.850 in South Korea, were detailed in this report. It is likely that the number is quite higher since this Command and Control server was unlikely to be the only one.
The BlackMoon campaign did not end in April of 2016. PC security analysts have continued to observe the compromised BlackMoon Command and Control server to learn more about how the attacks are carried out. Since May of 2016, the BlackMoon has claimed an additional 62,659 victims, 61,255 in South Korea, through that Command and Control server alone. The BlackMoon is designed to target South Korean banks in particular. The BlackMoon's configuration files show that it can be adapted to target 61 different South Korean banks.
Table of Contents
The BlackMoon Modus Operandi and Its Possible Origins
BlackMoon was first observed in 2014. This banking Trojan uses proxy auto-config files (PAC) to take over the victim's Internet traffic and search for addresses matching a list of bank URLs in its configuration files. Whenever the BlackMoon detects that the victim is going to visit a banking website, the BlackMoon redirects the victim to a phishing website instead of taking them to their real online banking page. The victim, believing to be on their bank's website, will enter their password and login information, essentially handing over their personal data in the process. It is likely that the recent the BlackMoon attacks are being perpetrated by a con artist group in China. The designation of the Command and Control server files and source code comments were all written in Chinese. This BlackMoon attack, in particular, is proving to be quite extensive, targeting tens of thousands of computer users. Attention needs to be brought to this sustained threat campaign against South Korean users as a way to protect end users and make them aware of the possible risks of using online banking without proper security safeguards.
Details of the Most Recent BlackMoon Attacks
The BlackMoon attack is not particularly original, typical of most of these banking Trojan attacks. However, the BlackMoon's distribution and delivery strategies continue to evolve, making it especially threatening in this latest attack. The BlackMoon may be delivered as an executable file downloaded from an infected website. This executable will extract a DLL which runs in the background and monitors the victim's online activity. Sometimes the BlackMoon can be recognized easily because it will cause the affected computer to display cryptic pop-up messages. The message (usually written in Korean) that appears when computer users try to log into their banking website says:
'Financial Supervisory Service is conducting an authentication process did you install the security certificate for this PC?
※ Certificate must verify the security and privacy of information leakage incidents in the auction using Internet banking Guests prevent financial fraud, please see below.
※ You cannot access the Internet Banking more safely receive the security certification process.
※ Please click the bank name that you use to proceed to the secure authentication procedures.'
Assessing these links leads computer users to fake banking websites that contain bogus content that was misappropriated from legitimate online banking pages. Computer users can best protect their machines by installing a reliable security program that is fully up-to-date and activating all security safeguards, such as a two-step authentication, on their online banking accounts.
Analysis Report
General information
| Family Name: | Trojan.BlackMoon |
|---|---|
| Packers: | UPX |
| Signature status: | No Signature |
Known Samples
Known Samples
This section lists other file samples believed to be associated with this family.|
MD5:
3b70b79d70bf333a2288b9edf2555d58
SHA1:
3f2cadff4483882f19b1e78c0e708a5316dd062e
SHA256:
E9BBD154D7F012BE31B2D4128AD49205D301F80786CD25E04E4B81030A73A79F
File Size:
362.50 KB, 362496 bytes
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MD5:
0fff84e37c91d56b731f0cfce1736c3b
SHA1:
4cfeb8d9def3dd366492933b721d2bd694c8cec1
SHA256:
4765C5582E1E7ECDCC849576EDA091BC2A3D783EDA7F222875C6F5ADCE316B6C
File Size:
3.36 MB, 3362816 bytes
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MD5:
076f81bfd9f42aed9cb6d3b13d06ca2d
SHA1:
b178a77fc69ad8c9a014106fff064c26e325c9f1
SHA256:
9A619ACCDDC482C552FA328F1C7651FB120B21F42C53C35821FB62DB8D17F07F
File Size:
50.18 KB, 50176 bytes
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Windows Portable Executable Attributes
- File doesn't have "Rich" header
- File doesn't have debug information
- File doesn't have exports table
- File doesn't have relocations information
- File doesn't have resources
- File doesn't have security information
- File has been packed
- File has exports table
- File is 32-bit executable
- File is either console or GUI application
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- File is GUI application (IMAGE_SUBSYSTEM_WINDOWS_GUI)
- File is Native application (NOT .NET application)
- File is not packed
- IMAGE_FILE_DLL is not set inside PE header (Executable)
- IMAGE_FILE_EXECUTABLE_IMAGE is set inside PE header (Executable Image)
File Icons
File Icons
This section displays icon resources found within family samples. Malware often replicates icons commonly associated with legitimate software to mislead users into believing the malware is safe.
Windows PE Version Information
Windows PE Version Information
This section displays values and attributes that have been set in the Windows file version information data structure for samples within this family. To mislead users, malware actors often add fake version information mimicking legitimate software.| Name | Value |
|---|---|
| Company Name | Yma-yanmolove Ug Personal |
| File Description | Yma-yanmolove Ug 辅助器 [蜘蛛侠:破损维度)(Spider-Man: Shattered Dimensions] |
| File Version | 1.0.0.0 |
| Legal Copyright | Yma-yanmolove Ug Personal |
| Product Name | Yma-yanmolove Ug 游戏辅助器 |
| Product Version | 1.0.0.0 |
File Traits
- dll
- No Version Info
- ntdll
- packed
- WriteProcessMemory
- x86
Block Information
Block Information
During analysis, EnigmaSoft breaks file samples into logical blocks for classification and comparison with other samples. Blocks can be used to generate malware detection rules and to group file samples into families based on shared source code, functionality and other distinguishing attributes and characteristics. This section lists a summary of this block data, as well as its classification by EnigmaSoft. A visual representation of the block data is also displayed, where available.| Total Blocks: | 542 |
|---|---|
| Potentially Malicious Blocks: | 235 |
| Whitelisted Blocks: | 30 |
| Unknown Blocks: | 277 |
Visual Map
? - Unknown Block
x - Potentially Malicious Block
Similar Families
Similar Families
This section lists other families that share similarities with this family, based on EnigmaSoft’s analysis. Many malware families are created from the same malware toolkits and use the same packing and encryption techniques but uniquely extend functionality. Similar families may also share source code, attributes, icons, subcomponents, compromised and/or invalid digital signatures, and network characteristics. Researchers leverage these similarities to rapidly and effectively triage file samples and extend malware detection rules.- Meduza.A
Windows API Usage
Windows API Usage
This section lists Windows API calls that are used by the samples in this family. Windows API usage analysis is a valuable tool that can help identify malicious activity, such as keylogging, security privilege escalation, data encryption, data exfiltration, interference with antivirus software, and network request manipulation.| Category | API |
|---|---|
| Anti Debug |
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| User Data Access |
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| Syscall Use |
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| Process Manipulation Evasion |
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| Process Shell Execute |
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| Other Suspicious |
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Shell Command Execution
Shell Command Execution
This section lists Windows shell commands that are run by the samples in this family. Windows Shell commands are often leveraged by malware for nefarious purposes and can be used to elevate security privileges, download and launch other malware, exploit vulnerabilities, collect and exfiltrate data, and hide malicious activity.
C:\WINDOWS\SysWOW64\rundll32.exe C:\WINDOWS\system32\rundll32.exe c:\users\user\downloads\4cfeb8d9def3dd366492933b721d2bd694c8cec1_0003362816.,LiQMAxHB
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