MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e. 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 23 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e
SHA3-384 hash: 13b4bd839576024162c0c9f7b35c97b9759a0cf2764eab633e2108e61b5d85d40ca0eefb2fab7e65a381fda0c14556cf
SHA1 hash: 831eb2db6ed181ed355721f35830f8ec1c0c338d
MD5 hash: 80189962a8ce05d2234bd469b6336369
humanhash: skylark-triple-violet-november
File name:LisectAVT_2403002B_283.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:3'608'078 bytes
First seen:2024-07-25 01:11:16 UTC
Last seen:2024-07-25 01:41:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 4f2f006e2ecf7172ad368f8289dc96c1 (178 x SalatStealer, 40 x LummaStealer, 17 x CobaltStrike)
ssdeep 49152:eV2QKqnYj7QN9CFWKFRSWt7o0QJsRpLeKSePqAphO9:e8QLq+
Threatray 268 similar samples on MalwareBazaar
TLSH T1C8F5C047BCA614BAC4BE6736897AA1667B307C440F3223C77A94B2BC2F76BD05935704
TrID 44.4% (.EXE) Win64 Executable (generic) (10523/12/4)
21.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.ICL) Windows Icons Library (generic) (2059/9)
8.5% (.EXE) OS/2 Executable (generic) (2029/13)
8.4% (.EXE) Generic Win/DOS Executable (2002/3)
Reporter Anonymous
Tags:CobaltStrike exe


Avatar
Anonymous
this malware sample is very nasty!

Intelligence

File Origin
# of uploads :
2
# of downloads :
242
Origin country :
CN CN
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.Trojan.GenericKD.72029770.10276.27647.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
golang monero overlay packed
Link:
https://www.filescan.io/uploads/66a1a669dfa8b2fced4e3ccb/reports/47791abc-35d0-4234-86d4-6de8cd302c05/overview
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/cbad1c31-432d-4d85-ba47-5c6c2d74318a
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1481084
Signature
AI detected suspicious sample
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Found malware configuration
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Potentially malicious time measurement code found
Uses known network protocols on non-standard ports
Yara detected CobaltStrike
Yara detected Powershell download and execute
Behaviour
Behavior Graph:
Download SVG
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e/
Threat name:
Win64.Backdoor.Cobeacon
Create hunting rule
Status:
Suspicious
First seen:
2024-07-25 01:12:08 UTC
File Type:
PE+ (Exe)
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jn7rzr73lfs6e3s5nu5nufk3chp5kepiq3dmrfclx6gqimocr6pa._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
152379224a15b42053e050e607602658011184e9de949845accad6dd4b5dffe5
CobaltStrike
1adf373ea91b8dc6f6f0c5cc570eba14ef720c394b8be4b3e9360d4f96bf48e6
CobaltStrike
2d4791c66db346075cc3811dedc19b66cdda13d8deb7ef3c5aa44843e8e61597
CobaltStrike
3d27f5ef39dec06f86331e298842bad015f9f0ee0c608e408c7d9b0daef210f6
CobaltStrike
9fbfdbce59dcbe7cd8b3073d6e3445abbfaddf205b5973600f3ff6f666501b77
CobaltStrike
+ 258 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  6/10
Tags:
persistence
Link:
https://tria.ge/reports/240725-bkkdnsyeqq/
Behaviour
Adds Run key to start application
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/e38e771b-a6cf-4527-9f64-ba408318c777
Unpacked files
SH256 hash:
4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e
MD5 hash:
80189962a8ce05d2234bd469b6336369
SHA1 hash:
831eb2db6ed181ed355721f35830f8ec1c0c338d
Link:
https://www.unpac.me/results/5d792177-11bd-40c3-af8b-f014e555026a/
Please note that we are no longer able to provide a coverage score for Virus Total.

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:command_and_control
Create hunting rule
Author:CD_R0M_
Description:This rule searches for common strings found by malware using C2. Based on a sample used by a Ransomware group
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__ConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:GoBinTest
Create hunting rule
Rule name:golang
Create hunting rule
Rule name:Golangmalware
Create hunting rule
Author:Dhanunjaya
Description:Malware in Golang
Rule name:golang_binary_string
Create hunting rule
Description:Golang strings present
Rule name:golang_duffcopy_amd64
Create hunting rule
Rule name:HiveRansomware
Create hunting rule
Author:Dhanunjaya
Description:Yara Rule To Detect Hive V4 Ransomware
Rule name:identity_golang
Create hunting rule
Author:Eric Yocam
Description:find Golang malware
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara

File information

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

Malspam

CobaltStrike

Executable exe 4b7f1cc7fb5965e26e5d6d3ada155b11dfd511e886c6c8944bbf8d0431c28f9e

(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_DLL_CHARACTERISTICSMissing dll Security Characteristics (GUARD_CF)high
Reviews
IDCapabilitiesEvidence
WIN32_PROCESS_APICan Create Process and Threadskernel32.dll::CloseHandle
kernel32.dll::CreateThread
WIN_BASE_APIUses Win Base APIkernel32.dll::LoadLibraryW
kernel32.dll::LoadLibraryExW
kernel32.dll::GetSystemInfo
WIN_BASE_EXEC_APICan Execute other programskernel32.dll::WriteConsoleW
kernel32.dll::SetConsoleCtrlHandler
kernel32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create Fileskernel32.dll::CreateFileA
kernel32.dll::GetSystemDirectoryA

Comments