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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b. 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: 11


Intelligence 11 IOCs YARA 43 File information Comments
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SHA256 hash: 97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b
SHA3-384 hash: 83fc3af01f8a39ee4eca65f9e52f19eba981eeca2debcaabc81990ca69b85b83de043f0dcb8fe7a20753b38d0bcad783
SHA1 hash: 83d9f921927928ae26b994a518fe554c3b573357
MD5 hash: 5f6633ccdbdc733492f75d8c3a4ca294
humanhash: monkey-harry-timing-pennsylvania
File name:decoded_sample.dll
Download: download sample
Signature CobaltStrike
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File size:285'184 bytes
First seen:2022-12-24 06:40:39 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash e1dcffde169ed8b947dc63acdb78aeca (9 x CobaltStrike)
ssdeep 6144:asLx/Mhfe6L2qLMTB9XtAzhlI/xl4kkrUt2:asKhWENiBfflgL
Threatray 721 similar samples on MalwareBazaar
TLSH T1ED54BE92F18067B3F2260C37C00DB437216BE7EE5106C79C3559E86D71A3859EE46BAB
TrID 30.2% (.EXE) Win64 Executable (generic) (10523/12/4)
18.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
14.4% (.EXE) Win16 NE executable (generic) (5038/12/1)
12.9% (.EXE) Win32 Executable (generic) (4505/5/1)
5.9% (.ICL) Windows Icons Library (generic) (2059/9)
Reporter Kostastsale
Tags:Cobalt Strike dll

Intelligence

File Origin
# of uploads :
1
# of downloads :
194
Origin country :
n/a
Vendor Threat Intelligence
Detection(s):
Win.Countermeasure.LoaderWinGeneric-9804845-2
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Win.Trojan.CobaltStrike-7899872-1
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Result
Verdict:
Malware
Maliciousness:
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug
Link:
https://www.filescan.io/uploads/63a69eff898959f356c5a62d/reports/14e68a9d-4eef-480a-b2e5-6b324e5e61da/overview
Malware family:
Cobalt Strike
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Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/f7956a23-1766-4db5-8e03-7d13c6cd14ac
Result
Threat name:
CobaltStrike, ReflectiveLoader
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Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1140332
Signature
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
Contains functionality to detect sleep reduction / modifications
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Yara detected CobaltStrike
Yara detected ReflectiveLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 773062 Sample: decoded_sample.dll Startdate: 24/12/2022 Architecture: WINDOWS Score: 100 23 Malicious sample detected (through community Yara rule) 2->23 25 Antivirus / Scanner detection for submitted sample 2->25 27 Yara detected ReflectiveLoader 2->27 29 3 other signatures 2->29 7 loaddll32.exe 1 2->7         started        process3 dnsIp4 21 111.90.143.233, 443, 49714, 49719 SHINJIRU-MY-AS-APShinjiruTechnologySdnBhdMY Malaysia 7->21 31 Contains functionality to detect sleep reduction / modifications 7->31 11 cmd.exe 1 7->11         started        13 regsvr32.exe 7->13         started        15 rundll32.exe 7->15         started        17 3 other processes 7->17 signatures5 process6 process7 19 rundll32.exe 11->19         started       
Detection:
cobaltstrike
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Link:
https://mwdb.cert.pl/sample/97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b/
Threat name:
Win32.Trojan.CobaltStrike
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Status:
Malicious
First seen:
2022-12-24 06:41:08 UTC
File Type:
PE (Dll)
AV detection:
24 of 26 (92.31%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=s7gcnntf4kffoxy75452e7ept7s4wtkasunb4uwy5r6kmgyobznq._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
2f4fc4fa579889b69b00bf7a19ae05eb737bc8afdcb41858761d678fa232a6c1
CobaltStrike
50cea054f1bfeb13485a6a3fb68319577f577db8a9442552fbc55f3f111c5c66
CobaltStrike
7e6eac61556db38aed58c343e2c43cc03d7693b42fae0daebe063fe31316f54d
CobaltStrike
9285d2519f669384a0946fb5d4e20494dcbdc970a417da7529ba3534f597f39b
CobaltStrike
bfe1babe6615da068908c02fd831232069147f9c7a1b6d9a219ec2da370332ef
CobaltStrike
e4c84c38ae6e57c391c76581d89c03ece9eb1769153ceaacba1cd503b75eb001
CobaltStrike
e8710133491bdf0b0d1a2e3d9a2dbbf0d58e0dbb0e0f7c65acef4f788128e1e4
CobaltStrike
+ 711 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  1/10
Tags:
n/a
Link:
https://tria.ge/reports/221224-hfr2aach3s/
Behaviour
Suspicious use of WriteProcessMemory
Unpacked files
SH256 hash:
97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b
MD5 hash:
5f6633ccdbdc733492f75d8c3a4ca294
SHA1 hash:
83d9f921927928ae26b994a518fe554c3b573357
Link:
https://www.unpac.me/results/02f602bf-9993-4766-b501-7343c1410096/
Malware family:
CobaltStrike
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Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/97cc26b665e2/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/97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b

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
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
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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
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Author:Ahmet Payaslioglu | Binalyze DFIR LAB
Description:Cobalt Strike Detection
Rule name:Cobaltstrike2
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Author:Ahmet Payaslioglu | Binalyze DFIR LAB
Description:Cobalt Strike Detection
Rule name:Cobaltstrike3
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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_ReflectiveLoader_RID3297
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Author:Florian Roth
Description:Detects reflective loader (Cobalt Strike)
Reference:http://www.clearskysec.com/tulip
Rule name:CobaltStrike_Resources_Artifact32_v3_14_to_v4_x
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Author:gssincla@google.com
Description:Cobalt Strike's resources/artifact32{.dll,.exe,big.exe,big.dll,bigsvc.exe} signature for versions 3.14 to 4.x and resources/artifact32svc.exe for 3.14 to 4.x and resources/artifact32uac.dll for v3.14 and v4.0
Reference:https://cloud.google.com/blog/products/identity-security/making-cobalt-strike-harder-for-threat-actors-to-abuse
Rule name:CobaltStrike_Sleeve_BeaconLoader_VA_x86_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Description:Cobalt Strike's sleeve/BeaconLoader.VA.x86.o (VirtualAlloc) 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_Sleeve_Beacon_Dll_v4_3_v4_4_v4_5_and_v4_6
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Author:gssincla@google.com
Description:Cobalt Strike's sleeve/beacon.dll Versions 4.3 and 4.4
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__Resources_Artifact32_v3_14_to_v4_x
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Author:gssincla@google.com
Rule name:CobaltStrike__Sleeve_BeaconLoader_VA_x86_o_v4_3_v4_4_v4_5_and_v4_6
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Author:gssincla@google.com
Rule name:CobaltStrike__Sleeve_Beacon_Dll_v4_3_v4_4_v4_5_and_v4_6
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Author:gssincla@google.com
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:CS_beacon
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Author:Etienne Maynier tek@randhome.io
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_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
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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
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Author:Florian Roth
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
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:meth_get_eip
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Author:Willi Ballenthin
Rule name:meth_peb_parsing
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Author:Willi Ballenthin
Rule name:meth_stackstrings
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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
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
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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
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Author:Florian Roth
Description:Detects suspicious XORed keyword - Mozilla/5.0
Reference:Internal Research
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
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_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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Author:Elastic Security
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:Windows_Trojan_Metasploit_7bc0f998
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Author:Elastic Security
Description:Identifies the API address lookup function leverage by metasploit shellcode
Rule name:Windows_Trojan_Metasploit_c9773203
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Author:Elastic Security
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_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.

Web download

CobaltStrike

DLL dll 97cc26b665e28a575f1fef3ba27c8f9fe5cb4d40951a1e52d8ec7ca61b0e0e5b

(this sample)

  
Delivery method
Distributed via web download

Comments