MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 ea27ef027a10c66b256aceb6e3c4a970d7076b3d3571885ab8e2f2a19c21aa97. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: ea27ef027a10c66b256aceb6e3c4a970d7076b3d3571885ab8e2f2a19c21aa97
SHA3-384 hash: ec288e8538f9ecfde32cad21a05a0b8219933c1e07ecf22c504409368df22b811ed94972266fe4ec0b14d5c10eb0eadd
SHA1 hash: 8ef64d466fa88214cf667065ce84df88133307df
MD5 hash: f5988fa37b3e84da4c3cddae235639a0
humanhash: uniform-sixteen-bacon-michigan
File name:WerFault.dll
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:464'896 bytes
First seen:2022-01-05 05:17:28 UTC
Last seen:2022-01-05 07:15:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash dae02f32a21e03ce65412f6e56942daa (123 x YellowCockatoo, 60 x CobaltStrike, 44 x JanelaRAT)
ssdeep 12288:Xhz4JlL2O2vwtNSepdelwaswaD/Op49awfGZKeDfdj:XmJoYtUUe4waD/O
Threatray 4'195 similar samples on MalwareBazaar
TLSH T1C5A4BF4EB640BADFC85FCD72D9991C24A76468A6434BD203A45742FC99CEA8BCF150F3
Reporter ankit_anubhav
Tags:CobaltStrike exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
515
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
WerFault.dll
Verdict:
No threats detected
Analysis date:
2022-01-05 05:18:36 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/b447962d-bbf1-4d0c-9a00-350be7f4718e

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/217347/
Detection(s):
SecuriteInfo.com.Trojan.MSIL.Sharps.26189.26138.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a file
DNS request
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
67%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61d52a0ebfe53d318f26fffd/reports/0aebd297-481c-48a3-a246-8cad4c8227b1/overview
Result
Verdict:
UNKNOWN
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/2f8cc794-550b-4a79-8743-3bc2d938abe1
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/915632
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Sigma detected: Bad Opsec Defaults Sacrificial Processes With Improper Arguments
Sigma detected: Suspicious Call by Ordinal
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 548110 Sample: WerFault.dll Startdate: 05/01/2022 Architecture: WINDOWS Score: 84 31 Found malware configuration 2->31 33 Malicious sample detected (through community Yara rule) 2->33 35 Yara detected CobaltStrike 2->35 37 3 other signatures 2->37 8 loaddll64.exe 1 2->8         started        process3 process4 10 regsvr32.exe 1 8->10         started        12 cmd.exe 1 8->12         started        14 rundll32.exe 8->14         started        16 rundll32.exe 8->16         started        process5 18 WerFault.exe 10->18         started        21 rundll32.exe 12->21         started        23 WerFault.exe 9 14->23         started        25 WerFault.exe 3 9 16->25         started        dnsIp6 29 192.168.2.1 unknown unknown 18->29 27 WerFault.exe 17 9 21->27         started        process7
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/ea27ef027a10c66b256aceb6e3c4a970d7076b3d3571885ab8e2f2a19c21aa97/
Threat name:
Win64.Backdoor.CobaltStrikeBeacon
Create hunting rule
Status:
Malicious
First seen:
2022-01-05 05:18:10 UTC
File Type:
PE+ (.Net Dll)
AV detection:
13 of 28 (46.43%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
1b11ae98b85bb0645abe36adcd852e6e84b51c6b5c811729f3c19f14f32d4e4f
CobaltStrike
22c034ac5a7ac3b628cbb37b575ac528030c961490e41bbe9435319fde8db07b
CobaltStrike
2bfe11c06ffe157399432080f6de6190e1062c99b4a55ec31974b5a37ee8dd3c
CobaltStrike
83653a93fc7d8cba1b6d9bcc7650a10b1b7f0c10ab2b1c112f9d1b7d37333051
CobaltStrike
8438bfbb9c978de4f342a3ed19551f735343a9c1ed0c8610a332a83918cb5985
CobaltStrike
954944ef6cdd1474ed35f27b790a7914156672cc7a1afbcc3214ccc1855ff12e
CobaltStrike
971c693bc67cf7b4b9655282b815bc1ba10ee937f1736ba1ef5fdb7aea392f6c
CobaltStrike
9ca6449c0586a77c55586bcc7adfaef2c3cc53da4713c5ed57fced15a3054545
CobaltStrike
bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121
CobaltStrike
d1d0c9d1ee7b800d491c9fb3fc94b93e5c59d903a4debb092846c46481077ae0
CobaltStrike
+ 4'185 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike botnet:366174496 backdoor trojan
Link:
https://tria.ge/reports/220105-fzav1aaccl/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Cobaltstrike
Suspicious use of NtCreateProcessExOtherParentProcess
Malware Config
C2 Extraction:
http://www.pypi.org:443/index.html
Unpacked files
SH256 hash:
ea27ef027a10c66b256aceb6e3c4a970d7076b3d3571885ab8e2f2a19c21aa97
MD5 hash:
f5988fa37b3e84da4c3cddae235639a0
SHA1 hash:
8ef64d466fa88214cf667065ce84df88133307df
Link:
https://www.unpac.me/results/608a14b0-70e6-44e3-b583-2690e9294ca1/
Malware family:
Cobalt Strike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/ea27ef027a10/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/ea27ef027a10c66b256aceb6e3c4a970d7076b3d3571885ab8e2f2a19c21aa97

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:extracted_at_0x44b
Create hunting rule
Author:cb
Description:sample - file extracted_at_0x44b.exe
Reference:Internal Research

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/217347/

Comments