MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847. 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: 15


Intelligence 15 IOCs YARA 16 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847
SHA3-384 hash: 3cd0092a3d2ec024b0cecd4a8a4e368a4cc615d236487441fe2d9c65cb487fda7edf398c7ebf057ed84e9e138ecb8589
SHA1 hash: d448e0404422b42ed5d339176acdab82a2e8207e
MD5 hash: a88ba8cc2624297095ed8fd2e5fd82b3
humanhash: ceiling-autumn-grey-west
File name:a88ba8cc2624297095ed8fd2e5fd82b3.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:696'944 bytes
First seen:2023-07-09 10:26:38 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash feab990e57f5d1cbc0b20788b5084545 (1 x CobaltStrike)
ssdeep 12288:hNh5vbpurvJl6Sotbq44qoN/QZDtrLpjr1VMvv4JMJMPIAOPBEvvJw:hNzu6SotO44qyQZZrLekKsJw
Threatray 361 similar samples on MalwareBazaar
TLSH T172E407C03756DCBBF896B03499414410BE6EBEE6F6D286DE12BCA20A4D3779058F8D17
TrID 48.7% (.EXE) Win64 Executable (generic) (10523/12/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
dhash icon 74f4e4cceac2c4dc (7 x AgentTesla, 6 x AveMariaRAT, 3 x CobaltStrike)
Reporter obfusor
Tags:Cobalt Strike exe signed

Code Signing Certificate

Organisation:亚洲诚信代码签名测试证书
Issuer:TrustAsia Code Signing CA
Algorithm:sha1WithRSAEncryption
Valid from:2018-01-29T05:39:00Z
Valid to:2020-01-29T05:39:00Z
Serial number: 0a
Intelligence: 2 malware samples on MalwareBazaar are signed with this code signing certificate
Cert Central Blocklist:This certificate is on the Cert Central blocklist
Thumbprint Algorithm:SHA256
Thumbprint: 751f92632d12af8972d20daec5409db521efd93013eca7769f39dd7a7f366b55
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
298
Origin country :
HK HK
Vendor Threat Intelligence
Malware family:
cobaltstrike
Create hunting rule
ID:
1
File name:
a88ba8cc2624297095ed8fd2e5fd82b3.exe
Verdict:
Malicious activity
Analysis date:
2023-07-09 10:29:33 UTC
Tags:
cobaltstrike trojan
Link:
https://app.any.run/tasks/cff44dfa-e0d6-4a82-994b-cbaeb24d2c47

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
CobaltStrikeBeacon
Create hunting rule
Link:
https://www.capesandbox.com/analysis/412763/
Detection(s):
SecuriteInfo.com.Adware.Certificate-1753.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending an HTTP GET request
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  6/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/96680/overview
Behaviour
MalwareBazaar
MeasuringTime
CheckCmdLine
EvasionQueryPerformanceCounter
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
cobaltstrike control greyware lolbin obfuscated overlay packed
Link:
https://www.filescan.io/uploads/64aa8b780e49d672f31ec7f0/reports/afe01556-d323-4ad3-8535-4840350f9afe/overview
Verdict:
Malicious
Labled as:
Cobaltstrike.Marte.B.Generic
Link:
https://www.hybrid-analysis.com/sample/f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847
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.
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/96176d03-2dbc-4a05-af68-2379d1131495
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/1270985
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sets debug register (to hijack the execution of another thread)
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847/
Threat name:
Win64.Hacktool.CobaltStrike
Create hunting rule
Status:
Malicious
First seen:
2023-06-13 11:16:25 UTC
File Type:
PE+ (Exe)
Extracted files:
48
AV detection:
20 of 38 (52.63%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=63bkgtr2qvmbv2b3asfq4zxp2w7wv64jlme64tby4yncdhcutbdq._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
1c308125a5365620d1cd9d58d2564897d1b5113bb81fe8b9e770bcffeb571079
CobaltStrike
337ba1bd5050c38f5e07f494d4dc0125276b0e0dea09667d86e7d763249c8f30
CobaltStrike
497f6f7e21dd3e9622c7cd9f96bb5359284cd21c24ea3faa99520397b911a08e
CobaltStrike
66f99d00978c99f2b5025ad213732f1543365a5cd55949736fa51552c21d25fa
CobaltStrike
8356f3fd326f41fcfbbc17c9fa1a81abe75aae2831b364bf6f6a100a2bebc5c2
CobaltStrike
cac95c6062dffb3995b56c092bd282c39ba8e4ec44131b8b5a830e134c248db8
CobaltStrike
f092970f8d406e0d01052e36238c3826d8392397802638af877a8d98ee6c9724
CobaltStrike
f5b401be01f2bc168083319bf1d491bc43b06d4022e0c72ed30b80ee5889be9e
CobaltStrike
+ 351 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike botnet:100000000 backdoor trojan
Link:
https://tria.ge/reports/230709-mg3xdsdb2s/
Behaviour
Suspicious behavior: EnumeratesProcesses
Cobaltstrike
Malware Config
C2 Extraction:
http://8.134.99.117:8080/jquery-3.3.1.min.js
Unpacked files
SH256 hash:
f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847
MD5 hash:
a88ba8cc2624297095ed8fd2e5fd82b3
SHA1 hash:
d448e0404422b42ed5d339176acdab82a2e8207e
Detections:
cobaltstrike_xor_config
Create hunting rule
Link:
https://www.unpac.me/results/1aff69c7-2f09-4cf1-96f9-19a2a45b76e1/
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/f6c2a34e3a85581ae83b048b0e66efd5bf6afb895b09ee4c38e61a219c549847

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:CobaltStrikeBeacon
Create hunting rule
Author:ditekshen, enzo & Elastic
Description:Cobalt Strike Beacon Payload
Rule name:CobaltStrike_C2_Encoded_XOR_Config_Indicator
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike C2 encoded profile configuration
Rule name:CobaltStrike_MZ_Launcher
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike MZ header ReflectiveLoader launcher
Rule name:CobaltStrike_Sleeve_BeaconLoader_VA_x64_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Description:Cobalt Strike's sleeve/BeaconLoader.VA.x64.o (VirtualAlloc) Versions 4.3 through at least 4.6
Reference:https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse
Rule name:CobaltStrike__Sleeve_BeaconLoader_VA_x64_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Rule name:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:HKTL_CobaltStrike_Beacon_Strings
Create hunting rule
Author:Elastic
Description:Identifies strings used in Cobalt Strike Beacon DLL
Reference:https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures
Rule name:HKTL_Win_CobaltStrike
Create hunting rule
Author:threatintel@volexity.com
Description:The CobaltStrike malware family.
Reference:https://www.volexity.com/blog/2021/05/27/suspected-apt29-operation-launches-election-fraud-themed-phishing-campaigns/
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:SUSP_XORed_Mozilla
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Trojan_CobaltStrike_1787eef5
Create hunting rule
Author:Elastic Security
Description:CS shellcode variants
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
Create hunting rule
Author:Elastic Security
Description:Rule for beacon reflective loader
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
Create hunting rule
Description:Rule for beacon reflective loader

File information

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

Cape
Cape
https://www.capesandbox.com/analysis/412763/

Comments