MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb. 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: 17


Intelligence 17 IOCs YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb
SHA3-384 hash: 861c48e85e8d071355372f11d5d1ff99954672eed0b5b348414f84c0df6c5051770f3f56bab2c34b3cf0ea28e7e69f80
SHA1 hash: 5755d433a3103e5fa5286e5f145a97bac02fee4b
MD5 hash: a8ae91c4fc6479a750038e96b3bce058
humanhash: oven-december-fourteen-autumn
File name:734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:288'256 bytes
First seen:2024-07-24 15:52:08 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 17b461a082950fc6332228572138b80c (121 x CobaltStrike, 2 x Cobalt Strike)
ssdeep 3072:pC4/vsc2en5/bkZvfK+rUhBOW64MsT2VXVn5L4NUcVNjF7x2qz35SfEZhw14ngMh:pCnle5/bkN1r0OHHL1cVNJZ5Za1ZM
TLSH T1AE54AED74112AA63F4D295349544B624B6B0E0CFF3F0067A2E3BDAAE751786FE1C8352
TrID 41.1% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
26.1% (.EXE) Win64 Executable (generic) (10523/12/4)
12.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
5.1% (.ICL) Windows Icons Library (generic) (2059/9)
5.0% (.EXE) OS/2 Executable (generic) (2029/13)
Reporter Anonymous
Tags:CobaltStrike exe


Avatar
Anonymous
this malware sample is very nasty!

Intelligence

File Origin
# of uploads :
1
# of downloads :
341
Origin country :
CN CN
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb.zip
Verdict:
No threats detected
Analysis date:
2024-07-24 17:11:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/8d950983-9f92-4751-b1fc-1a9309003276

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
Win.Trojan.CobaltStrike-9044898-1
Create hunting rule

Win.Trojan.CobaltStrike-7899871-1
Create hunting rule

Win.Countermeasure.LoaderWinGeneric-9804845-2
Create hunting rule

Verdict:
Malicious
Score:
99.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66a12361cb3d02fa0e4935e4
Tags:
Cobaltstrike
Result
Verdict:
Malware
Maliciousness:

Behaviour
DNS request
Connection attempt
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug cobalt cobaltstrike config-extracted mingw packed zusy
Link:
https://www.filescan.io/uploads/66a1237e4c5c17942a7cebb1/reports/3e3bf7e3-e2a0-4286-9beb-c2368c968f28/overview
Verdict:
Malicious
Labled as:
Trojan.CobaltStrike
Link:
https://www.hybrid-analysis.com/sample/734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb
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/8e564b27-0b30-47ef-8520-d0506ffebcf0
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1480355
Signature
AI detected suspicious sample
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found API chain indicative of debugger detection
Found malware configuration
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Performs DNS queries to domains with low reputation
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb/
Threat name:
Win64.Backdoor.Cobeacon
Create hunting rule
Status:
Malicious
First seen:
2024-04-30 06:50:00 UTC
File Type:
PE+ (Exe)
AV detection:
34 of 37 (91.89%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=onghozve2ggh5ohzwxmxmo2kdirjf5wb4mgwerqh64s7nl424p5q._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike botnet:100000 backdoor trojan
Link:
https://tria.ge/reports/240724-tbmfsatgrr/
Behaviour
Cobaltstrike
Malware Config
C2 Extraction:
http://tgsk.xyz:443/jquery-3.3.1.min.js
Verdict:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/1c035708-6678-4e94-9d4b-f6017f2cae17
Unpacked files
SH256 hash:
734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb
MD5 hash:
a8ae91c4fc6479a750038e96b3bce058
SHA1 hash:
5755d433a3103e5fa5286e5f145a97bac02fee4b
Detections:
HKTL_Imphashes_Aug22_1
Create hunting rule
CobaltStrike_Resources_Artifact64_v3_14_to_v4_x
Create hunting rule
hacktool_windows_cobaltstrike_beacon
Create hunting rule
CobaltStrike_Resources_Artifact64_v3_14_to_v4_x
Create hunting rule
Link:
https://www.unpac.me/results/5de7236d-cf29-46dc-9c37-2d1eed9835f5/
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/734c7766a4d1/report/overview.html
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/734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb

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:CobaltStrike_Resources_Artifact64_v3_14_to_v4_x
Create hunting rule
Author:gssincla@google.com
Description:Cobalt Strike's resources/artifact64{.exe,.dll,svc.exe,svcbig.exe,big.exe,big.dll,.x64.dll,big.x64.dll} and resource/artifactuac(alt)64.exe signature for versions v3.14 through v4.x
Reference:https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse
Rule name:CobaltStrike__Resources_Artifact64_v3_14_to_v4_x
Create hunting rule
Author:gssincla@google.com
Rule name:HKTL_Imphashes_Aug22_1
Create hunting rule
Author:Florian Roth
Description:Detects different hacktools based on their imphash
Reference:Internal Research
Rule name:Windows_Trojan_CobaltStrike_7f8da98a
Create hunting rule
Author:Elastic Security
Rule name:win_cobaltstrike_pipe_strings_nov_2023
Create hunting rule
Author:Matthew @ Embee_Research
Description:Detects default strings related to cobalt strike named pipes

File information

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

Malspam

CobaltStrike

Executable exe 734c7766a4d18c7eb8f9b5d9763b4a1a2292f6c1e30d624607f725f6af9ae3fb

(this sample)

  
Link
https://bbs.kafan.cn/forum-31-1.html
  
Delivery method
Distributed via e-mail attachment

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_AUTHENTICODEMissing Authenticodehigh
CHECK_NXMissing Non-Executable Memory Protectioncritical
CHECK_PIEMissing Position-Independent Executable (PIE) Protectionhigh
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
KERNEL32.dll::LoadLibraryW
KERNEL32.dll::GetStartupInfoA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA

Comments