MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9. While MalwareBazaar tries to identify whether the sample provided is malicious or not, there is no guarantee that a sample in MalwareBazaar is malicious.

Database Entry


Threat unknown


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments 1
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SHA256 hash: 937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9
SHA3-384 hash: 899b05f4e351c51e4ee9907bb316be6d3baef17834596e11cc650e69600ad1cb7b90b1f3efdde59e6cf31bbe3d07e611
SHA1 hash: 19964feea9f117f8b5fe80b25db63ccd4706e85a
MD5 hash: 5efb8671dd4bd33e4968526777d6a9f6
humanhash: summer-minnesota-blue-sixteen
File name:5efb8671dd4bd33e4968526777d6a9f6
Download: download sample
File size:43'520 bytes
First seen:2022-03-16 00:02:45 UTC
Last seen:2022-03-16 01:35:20 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 384:gFQF4NvUQJ82pF9orMvRNC+0gkInBHRrfE6RwaO4JWUPW:gOXp2pFpy6n56qZ
Threatray 6'656 similar samples on MalwareBazaar
TLSH T1E113D5256FBCDC51E11954B9E663C5FC4868EE06D42EFA33DAF53C26B27DA42241E203
File icon (PE):PE icon
dhash icon c99c3a5c547b96c8 (1 x RemcosRAT)
Reporter zbetcheckin
Tags:32 exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
238
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
5efb8671dd4bd33e4968526777d6a9f6
Verdict:
Malicious activity
Analysis date:
2022-03-16 00:58:28 UTC
Tags:
ransomware
Link:
https://app.any.run/tasks/5bbe280d-4bf6-4526-bac6-04e8c84ad7fd

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/251100/
Detection(s):
SecuriteInfo.com.Trojan.Siggen17.26020.28271.25482.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Sending an HTTP GET request
Running batch commands
Creating a process with a hidden window
Launching a process
Creating a file in the %temp% directory
Creating a file in the %AppData% subdirectories
Creating a file
Launching cmd.exe command interpreter
Creating a file in the Program Files subdirectories
Launching a service
Changing a file
Moving a recently created file
Searching for synchronization primitives
Replacing files
Moving a file to the Program Files subdirectory
Reading critical registry keys
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Deleting volume shadow copies
Creating a file in the mass storage device
Preventing system recovery
Stealing user critical data
Unauthorized injection to a system process
Encrypting user's files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
msbuild.exe obfuscated packed
Link:
https://www.filescan.io/uploads/62312938b94fb38cb4897432/reports/961004b1-3d55-4c6a-a3dc-87fc7b93c627/overview
Result
Verdict:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
TargetCompany Ransomware
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/ca1e8c08-1aea-489b-9750-6ec5e63fc9e1
Result
Threat name:
Targeted Ransomware
Create hunting rule
Detection:
malicious
Classification:
rans.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/957575
Signature
.NET source code contains potential unpacker
Allocates memory in foreign processes
Antivirus detection for URL or domain
Creates files in the recycle bin to hide itself
Deletes shadow drive data (may be related to ransomware)
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
May disable shadow drive data (uses vssadmin)
Modifies existing user documents (likely ransomware behavior)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Opens network shares
Sigma detected: Copying Sensitive Files with Credential Data
Sigma detected: Modification of Boot Configuration
Sigma detected: Shadow Copies Deletion Using Operating Systems Utilities
Sigma detected: Windows Shell File Write to Suspicious Folder
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
Tries to open files direct via NTFS file id
Uses bcdedit to modify the Windows boot settings
Writes to foreign memory regions
Yara detected Costura Assembly Loader
Yara detected RansomwareGeneric
Yara detected Targeted Ransomware
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 590056 Sample: aBRkopzlTz Startdate: 16/03/2022 Architecture: WINDOWS Score: 100 70 Snort IDS alert for network traffic (e.g. based on Emerging Threat rules) 2->70 72 Multi AV Scanner detection for domain / URL 2->72 74 Malicious sample detected (through community Yara rule) 2->74 76 12 other signatures 2->76 8 aBRkopzlTz.exe 16 8 2->8         started        13 Yjnds.exe 2->13         started        15 Yjnds.exe 2->15         started        process3 dnsIp4 66 91.243.44.142, 49749, 49777, 49779 SHOCK-1US Russian Federation 8->66 68 192.168.2.1, 135, 274 unknown unknown 8->68 62 C:\Users\user\AppData\Roaming\...\Yjnds.exe, PE32 8->62 dropped 64 C:\Users\user\AppData\...\aBRkopzlTz.exe.log, ASCII 8->64 dropped 88 Writes to foreign memory regions 8->88 90 Allocates memory in foreign processes 8->90 92 Injects a PE file into a foreign processes 8->92 17 MSBuild.exe 63 8->17         started        21 cmd.exe 1 8->21         started        23 cmd.exe 1 8->23         started        94 Multi AV Scanner detection for dropped file 13->94 file5 signatures6 process7 file8 54 C:\Users\user\Desktop\...\SUAVTZKNFL.jpg, data 17->54 dropped 56 C:\Users\user\Desktop\...\QNCYCDFIJJ.docx, data 17->56 dropped 58 C:\Users\user\Desktop58VWZAPQSQL.pdf, data 17->58 dropped 60 4 other files (2 malicious) 17->60 dropped 78 May disable shadow drive data (uses vssadmin) 17->78 80 Creates files in the recycle bin to hide itself 17->80 82 Deletes shadow drive data (may be related to ransomware) 17->82 84 4 other signatures 17->84 25 cmd.exe 1 17->25         started        28 cmd.exe 1 17->28         started        30 vssadmin.exe 1 17->30         started        32 conhost.exe 21->32         started        34 cacls.exe 1 21->34         started        36 reg.exe 1 21->36         started        42 19 other processes 21->42 38 conhost.exe 23->38         started        40 timeout.exe 1 23->40         started        signatures9 process10 signatures11 86 Uses bcdedit to modify the Windows boot settings 25->86 44 bcdedit.exe 8 1 25->44         started        46 conhost.exe 25->46         started        48 conhost.exe 28->48         started        50 bcdedit.exe 28->50         started        52 conhost.exe 30->52         started        process12
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9/
Threat name:
ByteCode-MSIL.Downloader.Seraph
Create hunting rule
Status:
Malicious
First seen:
2022-03-15 16:14:11 UTC
AV detection:
19 of 27 (70.37%)
Threat level:
  3/5
Verdict:
malicious
Label(s):
ryuk
Create hunting rule
Similar samples: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 6'646 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/220316-ab2e6ageg4/
Behaviour
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Unpacked files
SH256 hash:
937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9
MD5 hash:
5efb8671dd4bd33e4968526777d6a9f6
SHA1 hash:
19964feea9f117f8b5fe80b25db63ccd4706e85a
Link:
https://www.unpac.me/results/e8ce5825-db41-42e5-8d50-08d83159be07/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/937e8cf5c406/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.35
Link:
https://yomi.yoroi.company/submissions/937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9

YARA Signatures

MalwareBazaar uses YARA rules from several public and non-public repositories, such as YARAhub and Malpedia. Those are being matched against malware samples uploaded to MalwareBazaar as well as against any suspicious process dumps they may create. Please note that only results from TLP:CLEAR rules are being displayed.

Rule name:pe_imphash
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Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Web download

Executable exe 937e8cf5c406f171696985b30f88d3e91f1d6c69e7489e2e4ea2609c641f7bd9

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2099159/
Cape
Cape
https://www.capesandbox.com/analysis/251100/

Comments


Avatar
zbet commented on 2022-03-16 00:02:47 UTC

url : hxxp://91.243.44.142/arx777-Ofdds.exe