MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429. 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: 6


Intelligence 6 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429
SHA3-384 hash: d380ad416dbde85a7a45031018153da268f908903d49ce57525ce7514bad4e9d1cc24e38eb3fde9ffda2999612e8c836
SHA1 hash: dddcb6d3aa5414c47075d4a2a77dcf0b270656d8
MD5 hash: 3ce32a576d51a4a78206d237770e35ea
humanhash: sweet-fillet-oranges-nuts
File name:b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:770'560 bytes
First seen:2020-10-14 14:34:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 1b150af9196dcb4b79a83984ce97fdd2 (1 x CobaltStrike)
ssdeep 12288:ojckSHHVG38Vu6vB44SEmrsfap9zB7+/mq1xwiaZw/5RAAeoORk/8:SIHVG3CFpSELazk/DxCZw/T+W
Threatray 621 similar samples on MalwareBazaar
TLSH F3F4486DA6A451F5D0678039D622712EE7B3F8B50330D2EF8290D6352F63ED5BA3A710
Reporter JAMESWT_WT
Tags:Chinese APT CobaltStrike RedDelta

Intelligence

File Origin
# of uploads :
1
# of downloads :
128
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/70807/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending a UDP request
DNS request
Connection attempt
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/491086
Signature
Allocates memory in foreign processes
Antivirus detection for URL or domain
Injects code into the Windows Explorer (explorer.exe)
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
Tries to detect process monitoring tools (Task Manager, Process Explorer etc.)
Uses known network protocols on non-standard ports
Writes to foreign memory regions
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429/
Threat name:
Win64.Trojan.Emotet
Create hunting rule
Status:
Malicious
First seen:
2020-08-28 00:16:47 UTC
File Type:
PE+ (Exe)
Extracted files:
3
AV detection:
19 of 29 (65.52%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=wp6xkbee7sudraj6qfg3pvsjd7vdnk7irf4h7n6ph6zj3hm7kquq._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
05815c1e6e37cf16bb24c456836069a7709df19505708d26f503ff46360001ba
CobaltStrike
3e6c11f27c1309c63abe0a1563c6141ce7b8d8110419c572be46dcb3578db443
CobaltStrike
4d71f1eab01045de9ae76ea248be7746bad70c12ad977eeb6e8f8e46bbce6395
CobaltStrike
87dca59ec3d55bcb1b05da564e5ce0a164ab633f1c46a18a97f72a30efff7388
CobaltStrike
9a7d2b2c96ee9b7b0ddc1665988d935a719f04cdb2b2dd331ec36aa4f6597506
CobaltStrike
9c3b7ba8d375f19993312a6ac20418e0d107d73b30d585e9ad3646e150ff7c5a
CobaltStrike
a8241398b22ba3745b460a7a0c39cb9a86ca258b9283901d42e8dab283acb39b
CobaltStrike
d44d718c247b1664861f987b1725314f152e43e7c1da80b163f812e1b7c3fdb7
CobaltStrike
e99cc027c77bed5c1414225e39093bde66c654a9adfcca9cb3ddafa266410aea
CobaltStrike
f8c94e76f4d756924bf929b32f85158bc81911ce4a606af67e37460405e0ad3f
CobaltStrike
+ 611 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  8/10
Tags:
n/a
Link:
https://tria.ge/reports/201014-ktefe9htge/
Behaviour
Modifies system certificate store
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
JavaScript code in executable
Loads dropped DLL
Executes dropped EXE
Unpacked files
SH256 hash:
b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429
MD5 hash:
3ce32a576d51a4a78206d237770e35ea
SHA1 hash:
dddcb6d3aa5414c47075d4a2a77dcf0b270656d8
Link:
https://www.unpac.me/results/455c6a38-59d2-4c99-a5cc-fac8c589395e/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Trojan
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/b3fd750484fca838813e814db7d6491fea36abe889787fb7cf3fb29d9d9f5429

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:APT9002
Create hunting rule
Author:Seth Hardy
Description:9002
Rule name:APT9002Strings
Create hunting rule
Author:Seth Hardy
Description:9002 Identifying Strings
Rule name:HKTL_Meterpreter_inMemory
Create hunting rule
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:MALW_cobaltrike
Create hunting rule
Author:Marc Rivero | McAfee ATR Team
Description:Rule to detect CobaltStrike beacon
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:win_cobalt_strike_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

File information

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

  
X
https://twitter.com/IntezerLabs/status/1316384526323638274?s=20
Cape
Cape
https://www.capesandbox.com/analysis/70807/

Comments