MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879
SHA3-384 hash: e60656ca06b06155ac39ea6b3142081218084385a9bd42f8276117d9f2cc816da9a4e28651c26597dede5fffabb8fb7a
SHA1 hash: 0c058bbbfd3bfe53aa98b1e717c94d558fc6a58e
MD5 hash: da1dfca761e54f99fe9f9dcd7c7cc473
humanhash: fanta-robert-echo-artist
File name:体检人员登记表-请勿外传.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:2'912'256 bytes
First seen:2024-05-18 02:02:51 UTC
Last seen:2024-05-18 02:46:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 82a3e5cf697c84fa9b87f80e6c9b26f3 (1 x CobaltStrike)
ssdeep 49152:V7XmVSmOq9MgUP1puxoyIChLr7y9xIBfIU6iUT7doVyW:VA4V0w+UT7WyW
Threatray 1 similar samples on MalwareBazaar
TLSH T19AD51A26A67960D9D0BBC07892839F22B96134DD0B396BF34681D2652F35FF86D3D324
TrID 48.7% (.EXE) Win64 Executable (generic) (10523/12/4)
23.3% (.EXE) Win16 NE executable (generic) (5038/12/1)
9.3% (.EXE) OS/2 Executable (generic) (2029/13)
9.2% (.EXE) Generic Win/DOS Executable (2002/3)
9.2% (.EXE) DOS Executable Generic (2000/1)
Reporter Anonymous
Tags:CobaltStrike exe

Intelligence

File Origin
# of uploads :
2
# of downloads :
371
Origin country :
US US
Vendor Threat Intelligence
Malware family:
cobaltstrike
Create hunting rule
ID:
1
File name:
8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879.exe
Verdict:
Malicious activity
Analysis date:
2024-05-18 02:42:32 UTC
Tags:
cobaltstrike
Link:
https://app.any.run/tasks/59ec5123-c123-4113-8318-7296e5ed146b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.TrojanX-gen.17208.1712.UNOFFICIAL
Create hunting rule

Gathering data
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
DNS request
Connection attempt
Sending an HTTP GET request
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879
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:
Malicious
Link:
https://analyze.intezer.com/analyses/1b3ae901-d0a2-4d1c-9875-3c39f33bfc25
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1443677
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
Opens the same file many times (likely Sandbox evasion)
Uses known network protocols on non-standard ports
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Score:
45%
Verdict:
Susipicious
File Type:
PE
Link:
https://malprob.io/report/8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879/
Threat name:
Win64.Backdoor.CobaltStrikeBeacon
Create hunting rule
Status:
Malicious
First seen:
2024-04-25 15:36:15 UTC
AV detection:
13 of 24 (54.17%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rfepcwtpjdqo6wuxz4gqvwoqw2bi6foeuom5wbhl6p3pnfowfb4q._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879
CobaltStrike
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/240518-cgppnafc3y/
Unpacked files
SH256 hash:
8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879
MD5 hash:
da1dfca761e54f99fe9f9dcd7c7cc473
SHA1 hash:
0c058bbbfd3bfe53aa98b1e717c94d558fc6a58e
Link:
https://www.unpac.me/results/e6900619-5715-4cf5-90e1-fad7f103ff4f/
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8948f15a6f48/report/overview.html
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:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Rustyloader_mem_loose
Create hunting rule
Author:James_inthe_box
Description:Corroded buerloader
Reference:https://app.any.run/tasks/83064edd-c7eb-4558-85e8-621db72b2a24
Rule name:SEH__vectored
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:SHA512_Constants
Create hunting rule
Author:phoul (@phoul)
Description:Look for SHA384/SHA512 constants
Rule name:upxHook
Create hunting rule
Author:@r3dbU7z
Description:Detect artifacts from 'upxHook' - modification of UPX packer
Reference:https://bazaar.abuse.ch/sample/6352be8aa5d8063673aa428c3807228c40505004320232a23d99ebd9ef48478a/

File information

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

Malspam

CobaltStrike

Executable exe 8948f15a6f48e0ef5a97cf0d0ad9d0b6828f15c4a399db04ebf3f6f695d62879

(this sample)

  
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::TerminateProcess
KERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetSystemInfo
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineW
KERNEL32.dll::GetCommandLineA
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleOutputCP
KERNEL32.dll::GetConsoleMode
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileW
WIN_BCRYPT_APICan Encrypt Filesbcrypt.dll::BCryptGenRandom
WIN_SOCK_APIUses Network to send and receive dataWS2_32.dll::freeaddrinfo
WS2_32.dll::getaddrinfo
WS2_32.dll::WSARecv
WS2_32.dll::WSASend
WS2_32.dll::WSASocketW

Comments