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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea. 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: 15


Intelligence 15 IOCs YARA 50 File information Comments
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SHA256 hash: 3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea
SHA3-384 hash: 208b771d16d835a8cd35044810e290117c87c6100eb8478d8b69c77307ebc1dddc7f492fc7677105a5f71668629d3a4a
SHA1 hash: 6c07146193c064076f689f1e44a94e5dd19ee203
MD5 hash: 0263214f05a88d60fafbe390bf23d1b6
humanhash: football-fourteen-north-angel
File name:0263214f05a88d60fafbe390bf23d1b6.exe
Download: download sample
Signature CobaltStrike
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File size:2'784'256 bytes
First seen:2023-08-27 22:37:04 UTC
Last seen:2023-08-27 23:38:11 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f0ea7b7844bbc5bfa9bb32efdcea957c (160 x Vidar, 68 x Sliver, 35 x RemusStealer)
ssdeep 49152:4gQY3MD9OrRIrb/TCvO90d7HjmAFd4A64nsfJbDa9SgsOcVdAJydD1D:GOrReJ
Threatray 188 similar samples on MalwareBazaar
TLSH T15FD58D967860D8B6E0AEA272C965A5927B347C510F7273C72AB0B3F91E737D09E35304
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)
File icon (PE):PE icon
dhash icon 308a8a8c888a8a30 (5 x SnakeKeylogger, 5 x CobaltStrike, 4 x ValleyRAT)
Reporter abuse_ch
Tags:CobaltStrike exe


Avatar
abuse_ch
CobaltStrike C2:
18.163.100.82:19443

Intelligence

File Origin
# of uploads :
2
# of downloads :
383
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
meterpreter
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ID:
1
File name:
0263214f05a88d60fafbe390bf23d1b6.exe
Verdict:
Malicious activity
Analysis date:
2023-08-27 22:40:14 UTC
Tags:
meterpreter cobaltstrike
Link:
https://app.any.run/tasks/e8968da9-65fa-49e7-8eb7-6dea1123d92f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win64.Malware-gen.23791.9511.UNOFFICIAL
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Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a file
Running batch commands
Launching a process
Сreating synchronization primitives
Creating a process from a recently created file
Sending a custom TCP request
Searching for synchronization primitives
Creating a window
Gathering data
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
89%
Tags:
golang greyware
Link:
https://www.filescan.io/uploads/64ebd04b7444d2eb09f255d5/reports/654b3239-ae6d-4915-b3d2-243daaec00bc/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea
Malware family:
frp
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Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/72601182-fd9c-42e6-8452-47a6af2318e2
Result
Threat name:
CobaltStrike
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1298386
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Found malware configuration
Icon mismatch, binary includes an icon from a different legit application in order to fool users
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
Snort IDS alert for network traffic
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1298386 Sample: 7EjflmVEgs.exe Startdate: 28/08/2023 Architecture: WINDOWS Score: 100 40 Snort IDS alert for network traffic 2->40 42 Found malware configuration 2->42 44 Malicious sample detected (through community Yara rule) 2->44 46 7 other signatures 2->46 7 7EjflmVEgs.exe 2 2->7         started        process3 file4 34 C:\Users\Public\Music\ap4.spl, PE32+ 7->34 dropped 54 Potentially malicious time measurement code found 7->54 11 forfiles.exe 1 7->11         started        13 expand.exe 2 7->13         started        16 cmd.exe 5 2 7->16         started        18 cmd.exe 1 7->18         started        signatures5 process6 file7 20 ap4.exe 6 11->20         started        24 conhost.exe 11->24         started        36 C:\Users\Public\Music\ap4.exe, PE32+ 13->36 dropped 26 conhost.exe 13->26         started        28 WINWORD.EXE 247 23 16->28         started        30 conhost.exe 16->30         started        32 conhost.exe 18->32         started        process8 dnsIp9 38 18.163.100.82, 19443, 49720, 49723 AMAZON-02US United States 20->38 48 Antivirus detection for dropped file 20->48 50 Multi AV Scanner detection for dropped file 20->50 52 Contains functionality to detect sleep reduction / modifications 20->52 signatures10
Detection:
cobaltstrike
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Link:
https://mwdb.cert.pl/sample/3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea/
Threat name:
Win64.Backdoor.CobaltStrikeBeacon
Create hunting rule
Status:
Malicious
First seen:
2023-08-23 13:28:00 UTC
File Type:
PE+ (Exe)
Extracted files:
35
AV detection:
18 of 38 (47.37%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=h4bysc42ymzj5d3iwbf65pazdlcjiijkfc4z7s6mllwidvhhe7va._file
Verdict:
malicious
Label(s):
cobaltstrike
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Similar samples:
0286adc5d78f435af5b04693f2c5deac1878782929be38b839d9b662c7ff9496
CobaltStrike
93bfdfde9a2f2cb9d8f3ff79dd0a04a1fae35c6e769316f5e911c9ab168d2d3c
CobaltStrike
a1f6f5619498de33f8241846f9061f7bac532962d34df7966e9f19f4e4e990da
CobaltStrike
c9f7a195bd4281bff7f735f8e33e9de76c6867679e0e6a5d978f43bf330512ed
CobaltStrike
ea73ad2266d73da03328dfa1bdb5971203235e1dd2c53978955c85445e057365
CobaltStrike
f9a940083bfaf1d29e4eff15533ccd1d90b7726017d81f03677332e4857af2ee
CobaltStrike
+ 178 additional samples on MalwareBazaar
Result
Malware family:
cobaltstrike
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Score:
  10/10
Tags:
family:cobaltstrike backdoor trojan
Link:
https://tria.ge/reports/230827-2kc8gafe7z/
Behaviour
Modifies registry class
Suspicious behavior: AddClipboardFormatListener
Suspicious behavior: CmdExeWriteProcessMemorySpam
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Executes dropped EXE
Loads dropped DLL
Cobaltstrike
Unpacked files
SH256 hash:
3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea
MD5 hash:
0263214f05a88d60fafbe390bf23d1b6
SHA1 hash:
6c07146193c064076f689f1e44a94e5dd19ee203
Link:
https://www.unpac.me/results/dad0a081-6124-434a-8045-e3aab117a7dc/
Malware family:
CobaltStrike
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3f03890b9ac3/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/3f03890b9ac3329e8f68b04beebc191ac494212a28b99fcbcc5aec81d4e727ea

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
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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:Cobaltbaltstrike_Beacon_x64
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Author:Avast Threat Intel Team
Description:Detects CobaltStrike payloads
Reference:https://github.com/avast/ioc
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:CobaltStrikeBeacon
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Author:ditekshen, enzo & Elastic
Description:Cobalt Strike Beacon Payload
Rule name:CobaltStrike_C2_Encoded_XOR_Config_Indicator
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Author:yara@s3c.za.net
Description:Detects CobaltStrike C2 encoded profile configuration
Rule name:CobaltStrike_MZ_Launcher
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Author:yara@s3c.za.net
Description:Detects CobaltStrike MZ header ReflectiveLoader launcher
Rule name:CobaltStrike_ReflectiveLoader_RID3297
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Author:Florian Roth
Description:Detects reflective loader (Cobalt Strike)
Reference:http://www.clearskysec.com/tulip
Rule name:CobaltStrike_Sleep_Decoder_Indicator
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Author:yara@s3c.za.net
Description:Detects CobaltStrike sleep_mask decoder
Rule name:CobaltStrike_Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6
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Author:gssincla@google.com
Description:Cobalt Strike's sleeve/BeaconLoader.x64.o (Base) 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
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Author:yara@s3c.za.net
Description:Detects unmodified CobaltStrike beacon DLL
Rule name:CobaltStrike__Sleeve_BeaconLoader_x64_o_v4_3_v4_4_v4_5_and_v4_6
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Author:gssincla@google.com
Rule name:command_and_control
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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:crime_win32_csbeacon_1
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Author:@VK_Intel
Description:Detects Cobalt Strike loader
Reference:https://twitter.com/VK_Intel/status/1239632822358474753
Rule name:DebuggerCheck__API
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:DebuggerException__SetConsoleCtrl
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:GoBinTest
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Rule name:golang
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Rule name:Golangmalware
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Author:Dhanunjaya
Description:Malware in Golang
Rule name:golang_binary_string
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Description:Golang strings present
Rule name:golang_duffcopy_amd64
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Rule name:HiveRansomware
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Author:Dhanunjaya
Description:Yara Rule To Detect Hive V4 Ransomware
Rule name:HKTL_CobaltStrike_Beacon_4_2_Decrypt
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Author:Elastic
Description:Identifies deobfuscation routine used in Cobalt Strike Beacon DLL version 4.2
Reference:https://www.elastic.co/blog/detecting-cobalt-strike-with-memory-signatures
Rule name:HKTL_CobaltStrike_Beacon_Strings
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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_CobaltStrike_SleepMask_Jul22
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Author:CodeX
Description:Detects static bytes in Cobalt Strike 4.5 sleep mask function that are not obfuscated
Reference:https://codex-7.gitbook.io/codexs-terminal-window/blue-team/detecting-cobalt-strike/sleep-mask-kit-iocs
Rule name:HKTL_Meterpreter_inMemory
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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
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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
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Author:Florian Roth
Description:Detects Cobalt Strike sample from Leviathan report
Reference:https://goo.gl/MZ7dRg
Rule name:malware_CobaltStrike_v3v4
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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
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Author:Florian Roth (Nextron Systems)
Description:VT Research QA uploaded malware - file vqgk.dll
Reference:VT Research QA
Rule name:MALWARE_Win_CobaltStrike
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Author:ditekSHen
Description:CobaltStrike payload
Rule name:MALW_cobaltrike
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Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Rule to detect CobaltStrike beacon
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.cobalt_strike
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:PowerShell_Susp_Parameter_Combo_RID336F
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Author:Florian Roth
Description:Detects PowerShell invocation with suspicious parameters
Reference:https://goo.gl/uAic1X
Rule name:ReflectiveLoader
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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:SEH__vectored
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:ThreadControl__Context
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Reference:https://github.com/naxonez/yaraRules/blob/master/AntiDebugging.yara
Rule name:Trojan_Raw_Generic_4
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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
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Author:Jeff White (karttoon@gmail.com) @noottrak
Description:Detects Cobalt Strike payload typically loaded into memory via PowerShell.
Rule name:WiltedTulip_ReflectiveLoader
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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
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Author:Elastic Security
Description:CS shellcode variants
Rule name:Windows_Trojan_CobaltStrike_663fc95d
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Author:Elastic Security
Description:Identifies CobaltStrike via unidentified function code
Rule name:Windows_Trojan_CobaltStrike_b54b94ac
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Author:Elastic Security
Description:Rule for beacon sleep obfuscation routine
Rule name:Windows_Trojan_CobaltStrike_ee756db7
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Description:Attempts to detect Cobalt Strike based on strings found in BEACON
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
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Author:Elastic Security
Description:Rule for beacon reflective loader
Rule name:win_cobalt_strike_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.cobalt_strike.

File information

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

Comments