MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e. 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: 13


Intelligence 13 IOCs YARA 4 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e
SHA3-384 hash: f86931e3cb677ea71a52c551fa3e0e844fe97f8aadf79bd0890306f6c0070d6b85e861cff9ac88ac32fd3575e16a7af3
SHA1 hash: 86872519265b8c0c940a0bb9db7c280b00405370
MD5 hash: 44a624cc1a9e81146f8559e7ae0a1353
humanhash: four-delaware-oxygen-lake
File name:44a624cc1a9e81146f8559e7ae0a1353.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:474'112 bytes
First seen:2025-06-19 06:11:14 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 45da93d0796f68f697aaaea802e6b9ca (1 x CobaltStrike)
ssdeep 6144:V05Q9MMNkR28JLuOcYUTRplmFBSh0PHO5PzASQQ5ds6tLkr78Q:6G9E2UYYUTRpAShkO9hd5tL2IQ
TLSH T125A48E59A25C41F5F26BE138C8870506FBB178462361A78F43B4DABA2F276B15F3E311
TrID 44.4% (.EXE) Win64 Executable (generic) (10522/11/4)
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)
Magika pebin
Reporter abuse_ch
Tags:CobaltStrike exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
537
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
44a624cc1a9e81146f8559e7ae0a1353.exe
Verdict:
Suspicious activity
Analysis date:
2025-06-19 06:48:14 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/2090ddba-5da4-471a-ac85-d8e9c1881e18

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/10099/
Detection(s):
SecuriteInfo.com.Win64.MalwareX-gen.27039.23677.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
94.9%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6853e2dbe04cd8dcf13b1f11
Tags:
downloader dropper emotet crypt
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
DNS request
Connection attempt
Sending a custom TCP request
Sending an HTTP GET request
Creating a file
Сreating synchronization primitives
Searching for the window
Unauthorized injection to a system process
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/d917d9cb-875b-497a-89d2-b52862597562
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1718257
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Found malware configuration
Injects code into the Windows Explorer (explorer.exe)
Joe Sandbox ML detected suspicious sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Suricata IDS alerts for network traffic
System process connects to network (likely due to code injection or exploit)
Writes to foreign memory regions
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Score:
91%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e/
Threat name:
Win64.Trojan.CobaltStrike
Create hunting rule
Status:
Malicious
First seen:
2025-06-13 06:43:34 UTC
File Type:
PE+ (Exe)
AV detection:
18 of 24 (75.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=shufd6gntizpsb37t657djscpdtl4rqo2wiio6hewrpgfzevcz7a._file
Result
Malware family:
cobaltstrike
Create hunting rule
Score:
  10/10
Tags:
family:cobaltstrike backdoor trojan
Link:
https://tria.ge/reports/250619-gxtqrs1qt2/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
Cobaltstrike
Cobaltstrike family
Verdict:
Malicious
Tags:
cobalt_strike
YARA:
n/a
Link:
https://app.threat.zone/submission/699505d5-73b4-4347-b54d-f064e5a2c614
Unpacked files
SH256 hash:
91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e
MD5 hash:
44a624cc1a9e81146f8559e7ae0a1353
SHA1 hash:
86872519265b8c0c940a0bb9db7c280b00405370
Link:
https://www.unpac.me/results/aacfd261-5bab-451b-b6fd-edb9663c2339/
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/91e851f8cd9a/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/91e851f8cd9a32f9077f9fbbf1a64278e6be460ed5908778e4b45e62e495167e

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerCheck__QueryInfo
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset

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/10099/

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
URL_MONIKERS_APICan Download & Execute componentsurlmon.dll::URLDownloadToFileA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::OpenProcess
KERNEL32.dll::VirtualAllocEx
KERNEL32.dll::WriteProcessMemory
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThreadpoolWait
WIN_BASE_APIUses Win Base APIKERNEL32.dll::TerminateProcess
ntdll.dll::NtQueryInformationProcess
KERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetStartupInfoW
KERNEL32.dll::GetCommandLineA
KERNEL32.dll::GetCommandLineW
WIN_BASE_EXEC_APICan Execute other programsKERNEL32.dll::WriteConsoleW
KERNEL32.dll::SetStdHandle
KERNEL32.dll::GetConsoleMode
KERNEL32.dll::GetConsoleOutputCP
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileA

Comments