MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121. 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 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121
SHA3-384 hash: 3c4746c03fba9a0ec5279858940ce663ab972b88ce0770fc30eee81f380cf1fde8595071298dd268818adc901f54f44a
SHA1 hash: 75c0b309813d18e7951e6b9c2624b17d1cb48e72
MD5 hash: 28729c062ed2be6f4e3bd35d4214932f
humanhash: mango-april-illinois-dakota
File name:bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121.bin
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:387'544 bytes
First seen:2021-07-29 09:44:50 UTC
Last seen:2021-08-03 08:32:05 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash fae493efa26713ca7b380aa1d24764cf (1 x CobaltStrike)
ssdeep 6144:38pNywtge9BQRoQ8gcIZuVfZAgPRZOEUXNtsEPbmsx:INHthSRBXcegRPResEP9x
Threatray 1'018 similar samples on MalwareBazaar
TLSH T118844955F2A444B6E4BF9179CA92864AE7727C609B34C3CB1260971E3E337E05D3EB60
dhash icon 79756cecb29999b9 (734 x Heodo, 20 x Nitol, 20 x ManusCrypt)
Reporter JAMESWT_WT
Tags:CobaltStrike exe signed StackUp ApS

Code Signing Certificate

Organisation:StackUp ApS
Issuer:DigiCert Trusted G4 Code Signing RSA4096 SHA384 2021 CA1
Algorithm:sha256WithRSAEncryption
Valid from:2021-07-16T00:00:00Z
Valid to:2022-07-19T23:59:59Z
Serial number: 0400c7614f86d75fe4ee3f6192b6feda
Intelligence: 12 malware samples on MalwareBazaar are signed with this code signing certificate
MalwareBazaar Blocklist:This certificate is on the MalwareBazaar code signing certificate blocklist (CSCB)
Thumbprint Algorithm:SHA256
Thumbprint: 64cd94f7ed9b7ba8f7d58445c0b9d9823d37782cc3500d359b86c4a3b091d5b8
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
494
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121.bin
Verdict:
No threats detected
Analysis date:
2021-07-29 10:01:45 UTC
Tags:
installer
Link:
https://app.any.run/tasks/fecd647c-3d75-4da9-84a2-57bff9baf328

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/174969/
Detection(s):
SecuriteInfo.com.Trojan.Win32.Zenpak.4c.19108.30218.UNOFFICIAL
Create hunting rule

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:
Unknown
Link:
https://analyze.intezer.com/analyses/d85f0a4a-1915-4274-9618-4e0d1a6cf2be
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
96 / 100
Link:
https://www.joesandbox.com/analysis/823716
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Queues an APC in another process (thread injection)
Sigma detected: CobaltStrike Load by Rundll32
System process connects to network (likely due to code injection or exploit)
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Gathering data
Threat name:
Win64.Trojan.Zenpak
Create hunting rule
Status:
Malicious
First seen:
2021-07-28 16:24:59 UTC
File Type:
PE+ (Dll)
Extracted files:
56
AV detection:
7 of 46 (15.22%)
Threat level:
  5/5
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
1b11ae98b85bb0645abe36adcd852e6e84b51c6b5c811729f3c19f14f32d4e4f
CobaltStrike
2bfe11c06ffe157399432080f6de6190e1062c99b4a55ec31974b5a37ee8dd3c
CobaltStrike
42104ac31fe7ae7328c209007ea71dc3effb183c736a9bddcf86f690fe96df9a
CobaltStrike
954944ef6cdd1474ed35f27b790a7914156672cc7a1afbcc3214ccc1855ff12e
CobaltStrike
971c693bc67cf7b4b9655282b815bc1ba10ee937f1736ba1ef5fdb7aea392f6c
CobaltStrike
9ca6449c0586a77c55586bcc7adfaef2c3cc53da4713c5ed57fced15a3054545
CobaltStrike
b2c5438734cf3ebe39b97749d4d994d0d1a59a50705090625a09214331bc1b45
CobaltStrike
cf0a85f491146002a26b01c8aff864a39a18a70c7b5c579e96deda212bfeec58
CobaltStrike
e8d4bf2dc68074adf01dc003d51de3842994ae07fa88c370e8d29f1c27d9c407
CobaltStrike
+ 1'008 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike botnet:0 backdoor trojan
Link:
https://tria.ge/reports/210729-5a7rjqwtb6/
Behaviour
Modifies system certificate store
Blocklisted process makes network request
Cobaltstrike
Malware Config
C2 Extraction:
http://refebi.com:443/files/mobile-ipad-home.jpg
http://refebi.com:443/faq
Unpacked files
SH256 hash:
bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121
MD5 hash:
28729c062ed2be6f4e3bd35d4214932f
SHA1 hash:
75c0b309813d18e7951e6b9c2624b17d1cb48e72
Link:
https://www.unpac.me/results/6cb7039c-83c6-4aa1-9f26-678eab59b884/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/bb4efe96748fcc28b827fc297d060c3ab32053cfb8ea506f8c97000debd22121

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/174969/

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