MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10. 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


CobaltStrike


Vendor detections: 8


Intelligence 8 IOCs YARA 16 File information Comments
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SHA256 hash: 9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10
SHA3-384 hash: 08744b6e182962f65e0bbdd18c2e046722892b380b6ca1b13715761cf9667f664de51eed43efefe6295696fed234a560
SHA1 hash: c39ee8fe1a99c144130166c8faec1f4ed3011e0a
MD5 hash: 9408791cf02d1ab6e1f1945919fe0f4d
humanhash: three-april-bakerloo-skylark
File name:9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:212'480 bytes
First seen:2020-11-15 23:04:50 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 199c3b2f92d728912bb206ea499d43f1 (179 x CobaltStrike)
ssdeep 3072:mFrxs4i1NWXkz9wp3EVBe06s7WCL4OeP2MydvIaaSY7HfMZBV60Lw6j5U25n:mUFNK6Te09lS2JIa8CRLnjH
Threatray 246 similar samples on MalwareBazaar
TLSH 2724AFA17580C476C04A0475A60F8B7E9B79B8F459B5D487FB5C0AA89E722F3DB36303
Reporter seifreed
Tags:CobaltStrike

Intelligence

File Origin
# of uploads :
1
# of downloads :
74
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Trojan.CobaltStrike-8091534-0
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Win.Tool.CobaltStrike-6336852-0
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Result
Verdict:
Clean
Maliciousness:
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.
Result
Threat name:
ReflectiveLoader CobaltStrike
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Detection:
malicious
Classification:
troj
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/537536
Signature
Antivirus / Scanner detection for submitted sample
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: ReflectiveLoader
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 317865 Sample: ZKk94I44gh Startdate: 16/11/2020 Architecture: WINDOWS Score: 92 12 Malicious sample detected (through community Yara rule) 2->12 14 Antivirus / Scanner detection for submitted sample 2->14 16 Multi AV Scanner detection for submitted file 2->16 18 4 other signatures 2->18 6 loaddll32.exe 1 2->6         started        process3 process4 8 rundll32.exe 6->8         started        10 rundll32.exe 6->10         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10/
Threat name:
Win32.PUA.CobaltStrikeBeacon
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Status:
Malicious
First seen:
2020-11-15 23:06:47 UTC
AV detection:
31 of 48 (64.58%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=tcisqswi2mzj233j4h5dcceguu4afjygojru3vsmvlxduwf2biia._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
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CobaltStrike
+ 236 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
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Score:
  10/10
Tags:
family:cobaltstrike
Link:
https://tria.ge/reports/201115-nl1jmmrst2/
Behaviour
Suspicious use of WriteProcessMemory
Unpacked files
SH256 hash:
9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10
MD5 hash:
9408791cf02d1ab6e1f1945919fe0f4d
SHA1 hash:
c39ee8fe1a99c144130166c8faec1f4ed3011e0a
Link:
https://www.unpac.me/results/8470ff0f-1454-49ed-9e45-428bde3a24b6/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/9891284ac8d3329d6f69e1fa310886a53802a70672634dd64caaee3a58ba0a10

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:APT_CobaltStrike_Beacon_Indicator
Create hunting rule
Author:JPCERT
Description:Detects CobaltStrike beacons
Reference:https://github.com/JPCERTCC/aa-tools/blob/master/cobaltstrikescan.py
Rule name:Beacon_K5om
Create hunting rule
Author:Florian Roth
Description:Detects Meterpreter Beacon - file K5om.dll
Reference:https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html
Rule name:CobaltStrike
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect CobaltStrike Beacon in memory
Reference:https://blogs.jpcert.or.jp/en/2018/08/volatility-plugin-for-detecting-cobalt-strike-beacon.html
Rule name:CobaltStrikeBeacon
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Author:enzo
Description:Cobalt Strike Beacon Payload
Rule name:CobaltStrike_C2_Encoded_Config_Indicator
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike C2 encoded profile configuration
Rule name:CobaltStrike_Sleep_Decoder_Indicator
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike sleep_mask decoder
Rule name:CobaltStrike_Unmodifed_Beacon
Create hunting rule
Author:yara@s3c.za.net
Description:Detects unmodified CobaltStrike beacon DLL
Rule name:crime_win32_csbeacon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Cobalt Strike loader
Reference:https://twitter.com/VK_Intel/status/1239632822358474753
Rule name:HKTL_Meterpreter_inMemory
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Author:netbiosX, Florian Roth
Description:Detects Meterpreter in-memory
Reference:https://www.reddit.com/r/purpleteamsec/comments/hjux11/meterpreter_memory_indicators_detection_tooling/
Rule name:Leviathan_CobaltStrike_Sample_1
Create hunting rule
Author:Florian Roth
Description:Detects Cobalt Strike sample from Leviathan report
Reference:https://goo.gl/MZ7dRg
Rule name:Malware_QA_vqgk
Create hunting rule
Author:Florian Roth
Description:VT Research QA uploaded malware - file vqgk.dll
Reference:VT Research QA
Rule name:MALW_cobaltrike
Create hunting rule
Author:Marc Rivero | McAfee ATR Team
Description:Rule to detect CobaltStrike beacon
Rule name:PowerShell_Susp_Parameter_Combo
Create hunting rule
Author:Florian Roth
Description:Detects PowerShell invocation with suspicious parameters
Reference:https://goo.gl/uAic1X
Rule name:ReflectiveLoader
Create hunting rule
Description:Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended
Reference:Internal Research
Rule name:WiltedTulip_ReflectiveLoader
Create hunting rule
Author:Florian Roth
Description:Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip
Reference:http://www.clearskysec.com/tulip

File information

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

  
Delivery method
Other

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