MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63. 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 1 YARA 60 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63
SHA3-384 hash: 9d83f0a7721e57ac693ab26f5c2b3101480140010210fd963eb11001be64aaf51f7ddd7cbc0a2821f3c3bcf8f20b75d4
SHA1 hash: ea839e3a63500c01f878462492ee1fde38ab0724
MD5 hash: c1c7a4146da045419593082ac1099c59
humanhash: snake-quiet-pizza-orange
File name:c1c7a4146da045419593082ac1099c59.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:14'848 bytes
First seen:2025-06-17 04:55:38 UTC
Last seen:2025-06-17 14:01:39 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f6243a15fa8eee8ee96b5e1144d461f6 (17 x CobaltStrike, 1 x Metasploit, 1 x Cobalt Strike)
ssdeep 192:a3mbPYCfMcrfOIuZmvKQxtzlSIVX6NOfQniTjz4ejDMN1:RMCfrfQ6tBSIhQUjkeUN1
Threatray 45 similar samples on MalwareBazaar
TLSH T1E262D872D90378F2EA155CF049FBBBB65F33BA938CB08869CF50D8D42910760A95B649
TrID 32.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
20.5% (.EXE) Win64 Executable (generic) (10522/11/4)
12.8% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
9.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
8.7% (.EXE) Win32 Executable (generic) (4504/4/1)
Magika pebin
Reporter abuse_ch
Tags:CobaltStrike exe


Avatar
abuse_ch
CobaltStrike C2:
39.107.90.187:4433

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
39.107.90.187:4433 https://threatfox.abuse.ch/ioc/1541436/

Intelligence

File Origin
# of uploads :
3
# of downloads :
516
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
meterpreter
Create hunting rule
ID:
1
File name:
c1c7a4146da045419593082ac1099c59.exe
Verdict:
Malicious activity
Analysis date:
2025-06-17 04:58:21 UTC
Tags:
meterpreter backdoor cobaltstrike
Link:
https://app.any.run/tasks/d875f2b1-9f09-4fb4-8aca-12f2134f0b57

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
CobaltStrikeStager
Create hunting rule
Link:
https://www.capesandbox.com/analysis/9757/
Detection(s):
Win.Countermeasure.LoaderWinGeneric-9804845-2
Create hunting rule

Gathering data
Result
Verdict:
Malware
Maliciousness:

Behaviour
Connection attempt
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug cobaltstrike packed rozena
Link:
https://www.filescan.io/uploads/6850f577fd02ed5e05aebed8/reports/dc530c9f-393a-47dc-88cd-6d87a418b005/overview
Verdict:
Malicious
Labled as:
Dump:Generic.ShellCode.Marte.1
Link:
https://www.hybrid-analysis.com/sample/c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63
Malware family:
Cobalt Strike
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/561e78de-a8da-4387-b2b2-15cf0ff02bee
Result
Threat name:
CobaltStrike, Metasploit, ReflectiveLoad
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1716067
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Detected unpacking (creates a PE file in dynamic memory)
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Sigma detected: Potentially Suspicious Malware Callback Communication
Suricata IDS alerts for network traffic
Yara detected CobaltStrike
Yara detected Metasploit Payload
Yara detected ReflectiveLoader
Behaviour
Behavior Graph:
Download SVG
Score:
97%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63/
Threat name:
Win32.Trojan.CobaltStrike
Create hunting rule
Status:
Malicious
First seen:
2025-06-12 12:43:00 UTC
File Type:
PE (Exe)
AV detection:
24 of 24 (100.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ympamruaf3ftgvlhatwxoppq23o46c6gas6lw3ethajnwlahr5rq._file
Verdict:
malicious
Label(s):
metasploit
Create hunting rule
cobaltstrike
Create hunting rule
Similar samples:
64672e440233c0624ba97623be556888f354c3672b6623302be7f2f0e49a8d7b
CobaltStrike
bc9977572b8ff171c0416afb3c1ee3b719a2598a704aa93832411b04bccdc31c
CobaltStrike
e84d658c4489812aa7c0fc44e8ce1832427f201c5c40872f160238eb3af31a75
CobaltStrike
eaa7090b669f319c0668f25a2ae7d78aa1d23503ad6289d0b699acd1ed635944
CobaltStrike
error
CobaltStrike
f4a208b490ce6094b8fa61c226db5f8f1eb01e95dc478b175a57a121a5f812e6
CobaltStrike
+ 35 additional samples on MalwareBazaar
Result
Malware family:
metasploit
Create hunting rule
Score:
  10/10
Tags:
family:metasploit backdoor discovery trojan
Link:
https://tria.ge/reports/250617-fkv8dswscs/
Behaviour
System Location Discovery: System Language Discovery
MetaSploit
Metasploit family
Malware Config
C2 Extraction:
http://39.107.90.187:4433/Elv5
Verdict:
Malicious
Tags:
red_team_tool cobalt_strike Win.Countermeasure.LoaderWinGeneric-9804845-2
YARA:
win_cobaltstrike_pipe_strings_nov_2023 Windows_Trojan_CobaltStrike_1787eef5 Windows_Trojan_CobaltStrike_7f8da98a
Link:
https://app.threat.zone/submission/ac7cf953-07bb-4ba5-bead-a572740858cf
Unpacked files
SH256 hash:
c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63
MD5 hash:
c1c7a4146da045419593082ac1099c59
SHA1 hash:
ea839e3a63500c01f878462492ee1fde38ab0724
Link:
https://www.unpac.me/results/68a5a32c-064c-4d7b-bc1f-4c3402792351/
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/c31e0646802ecb33556704ed773df0d6ddcf0bc604bcbb6c933812db2c078f63

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:Beacon_K5om
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Meterpreter Beacon - file K5om.dll
Reference:https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html
Rule name:Beacon_K5om_RID2B14
Create hunting rule
Author:Florian Roth
Description:Detects Meterpreter Beacon - file K5om.dll
Reference:https://www.fireeye.com/blog/threat-research/2017/06/phished-at-the-request-of-counsel.html
Rule name:Cobaltstrike1
Create hunting rule
Author:Ahmet Payaslioglu | Binalyze DFIR LAB
Description:Cobalt Strike Detection
Rule name:Cobaltstrike2
Create hunting rule
Author:Ahmet Payaslioglu | Binalyze DFIR LAB
Description:Cobalt Strike Detection
Rule name:Cobaltstrike3
Create hunting rule
Author:Ahmet Payaslioglu | Binalyze DFIR LAB
Description:Cobalt Strike Detection
Rule name:CobaltStrikeBeacon
Create hunting rule
Author:ditekshen, enzo & Elastic
Description:Cobalt Strike Beacon Payload
Rule name:CobaltStrike_C2_Encoded_XOR_Config_Indicator
Create hunting rule
Author:yara@s3c.za.net
Description:Detects CobaltStrike C2 encoded profile configuration
Rule name:CobaltStrike_ReflectiveLoader_RID3297
Create hunting rule
Author:Florian Roth
Description:Detects reflective loader (Cobalt Strike)
Reference:http://www.clearskysec.com/tulip
Rule name:CobaltStrike_Resources_Xor_Bin_v2_x_to_v4_x
Create hunting rule
Author:gssincla@google.com
Description:Cobalt Strike's resource/xor.bin signature for version 2.x through 4.x
Reference:https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse
Rule name:CobaltStrike_Sleeve_BeaconLoader_x86_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Description:Cobalt Strike's sleeve/BeaconLoader.x86.o Versions 4.3 through at least 4.6
Reference:https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse
Rule name:CobaltStrike_Unmodifed_Beacon
Create hunting rule
Author:yara@s3c.za.net
Description:Detects unmodified CobaltStrike beacon DLL
Rule name:CobaltStrike__Resources_Xor_Bin_v2_x_to_v4_x
Create hunting rule
Author:gssincla@google.com
Rule name:CobaltStrike__Sleeve_BeaconLoader_x86_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Rule name:cobalt_strike_beacon_detected
Create hunting rule
Author:0x0d4y
Description:This rule detects cobalt strike beacons.
Rule name:crime_win32_csbeacon_1
Create hunting rule
Author:@VK_Intel
Description:Detects Cobalt Strike loader
Reference:https://twitter.com/VK_Intel/status/1239632822358474753
Rule name:CS_beacon
Create hunting rule
Author:Etienne Maynier tek@randhome.io
Rule name:DebuggerCheck__API
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:detect_powershell
Create hunting rule
Author:daniyyell
Description:Detects suspicious PowerShell activity related to malware execution
Rule name:Detect_PowerShell_Obfuscation
Create hunting rule
Author:daniyyell
Description:Detects obfuscated PowerShell commands commonly used in malicious scripts.
Rule name:golang_bin_JCorn_CSC846
Create hunting rule
Author:Justin Cornwell
Description:CSC-846 Golang detection ruleset
Rule name:HKTL_CobaltStrike_Beacon_Strings
Create hunting rule
Author:Elastic
Description:Identifies strings used in Cobalt Strike Beacon DLL
Reference:https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures
Rule name:HKTL_Meterpreter_inMemory
Create hunting rule
Author:netbiosX, Florian Roth
Description:Detects Meterpreter in-memory
Reference:https://www.reddit.com/r/purpleteamsec/comments/hjux11/meterpreter_memory_indicators_detection_tooling/
Rule name:HKTL_Win_CobaltStrike
Create hunting rule
Author:threatintel@volexity.com
Description:The CobaltStrike malware family.
Reference:https://www.volexity.com/blog/2021/05/27/suspected-apt29-operation-launches-election-fraud-themed-phishing-campaigns/
Rule name:INDICATOR_SUSPICIOUS_ReflectiveLoader
Create hunting rule
Author:ditekSHen
Description:Detects Reflective DLL injection artifacts
Rule name:Leviathan_CobaltStrike_Sample_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects Cobalt Strike sample from Leviathan report
Reference:https://goo.gl/MZ7dRg
Rule name:Leviathan_CobaltStrike_Sample_1_RID3324
Create hunting rule
Author:Florian Roth
Description:Detects Cobalt Strike sample from Leviathan report
Reference:https://goo.gl/MZ7dRg
Rule name:malware_CobaltStrike_beacon
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:CobaltStrike encoding code
Rule name:malware_CobaltStrike_v3v4
Create hunting rule
Author:JPCERT/CC Incident Response Group
Description:detect CobaltStrike Beacon in memory
Reference:https://blogs.jpcert.or.jp/en/2018/08/volatility-plugin-for-detecting-cobalt-strike-beacon.html
Rule name:Malware_QA_vqgk
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:VT Research QA uploaded malware - file vqgk.dll
Reference:VT Research QA
Rule name:MALWARE_Win_CobaltStrike
Create hunting rule
Author:ditekSHen
Description:CobaltStrike payload
Rule name:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:pe_detect_tls_callbacks
Create hunting rule
Rule name:pe_no_import_table
Create hunting rule
Description:Detect pe file that no import table
Rule name:PowerShell_Susp_Parameter_Combo_RID336F
Create hunting rule
Author:Florian Roth
Description:Detects PowerShell invocation with suspicious parameters
Reference:https://goo.gl/uAic1X
Rule name:ReflectiveLoader
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects a unspecified hack tool, crack or malware using a reflective loader - no hard match - further investigation recommended
Reference:Internal Research
Rule name:SUSP_XORed_Mozilla_Oct19
Create hunting rule
Author:Florian Roth
Description:Detects suspicious single byte XORed keyword 'Mozilla/5.0' - it uses yara's XOR modifier and therefore cannot print the XOR key. You can use the CyberChef recipe linked in the reference field to brute force the used key.
Reference:https://gchq.github.io/CyberChef/#recipe=XOR_Brute_Force()
Rule name:SUSP_XORed_Mozilla_RID2DB4
Create hunting rule
Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
Rule name:Sus_CMD_Powershell_Usage
Create hunting rule
Author:XiAnzheng
Description:May Contain(Obfuscated or no) Powershell or CMD Command that can be abused by threat actor(can create FP)
Rule name:Sus_Obf_Enc_Spoof_Hide_PE
Create hunting rule
Author:XiAnzheng
Description:Check for Overlay, Obfuscating, Encrypting, Spoofing, Hiding, or Entropy Technique(can create FP)
Rule name:ThreadControl__Context
Create hunting rule
Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Trojan_Raw_Generic_4
Create hunting rule
Author:FireEye
Reference:https://www.fireeye.com/blog/products-and-services/2020/12/fireeye-shares-details-of-recent-cyber-attack-actions-to-protect-community.html
Rule name:troj_win_cobaltstrike_memoryinject
Create hunting rule
Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Detects Cobalt Strike payload typically loaded into memory via PowerShell.
Rule name:WiltedTulip_ReflectiveLoader
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects reflective loader (Cobalt Strike) used in Operation Wilted Tulip
Reference:http://www.clearskysec.com/tulip
Rule name:Windows_Trojan_CobaltStrike_1787eef5
Create hunting rule
Author:Elastic Security
Description:CS shellcode variants
Rule name:Windows_Trojan_CobaltStrike_3dc22d14
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_CobaltStrike_7f8da98a
Create hunting rule
Author:Elastic Security
Rule name:Windows_Trojan_CobaltStrike_ee756db7
Create hunting rule
Author:Elastic Security
Description:Attempts to detect Cobalt Strike based on strings found in BEACON
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
Create hunting rule
Description:Rule for beacon reflective loader
Rule name:Windows_Trojan_Metasploit_7bc0f998
Create hunting rule
Description:Identifies the API address lookup function leverage by metasploit shellcode
Rule name:Windows_Trojan_Metasploit_c9773203
Create hunting rule
Description:Identifies the 64 bit API hashing function used by Metasploit. This has been re-used by many other malware families.
Reference:https://github.com/rapid7/metasploit-framework/blob/04e8752b9b74cbaad7cb0ea6129c90e3172580a2/external/source/shellcode/windows/x64/src/block/block_api.asm
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
Rule name:win_cobalt_strike_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.cobalt_strike.
Rule name:win_samsam_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:autogenerated rule brought to you by yara-signator

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/9757/

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::GetStartupInfoA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CreateFileA

Comments