MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f. 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 YARA 24 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f
SHA3-384 hash: 65b272ba7db6ac046aa9cbca601b0637311da490cb3267871d44023ec77848abf442bf27fe0c5b6e5b2b627c4a5de1eb
SHA1 hash: d53c241ced618571ed579a3d2b7ddb19a4a54308
MD5 hash: 577c461ef8030e9feece3cdb5054b888
humanhash: red-twelve-echo-bravo
File name:577c461ef8030e9feece3cdb5054b88.exe
Download: download sample
Signature CobaltStrike
Create hunting rule
File size:278'030 bytes
First seen:2023-08-18 19:57:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 55c3c2de18770066e2cd1f40bc997aba (2 x CobaltStrike)
ssdeep 6144:ArV9P0B5PbzZH+eApEH5gsYQF4wogV3mjffDjq:ArV9abGEi7QFpTVWjTjq
Threatray 347 similar samples on MalwareBazaar
TLSH T1E844F155F943FC72E51B21B41CA7EB7A5D397E214B70C037F688978EBA327D0292160A
TrID 32.2% (.EXE) Microsoft Visual C++ compiled executable (generic) (16529/12/5)
20.5% (.EXE) Win64 Executable (generic) (10523/12/4)
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) (4505/5/1)
Reporter smica83
Tags:CobaltStrike exe

Intelligence

File Origin
# of uploads :
1
# of downloads :
342
Origin country :
HU HU
Vendor Threat Intelligence
Malware family:
cobaltstrike
Create hunting rule
ID:
1
File name:
577c461ef8030e9feece3cdb5054b88.exe
Verdict:
Malicious activity
Analysis date:
2023-08-18 19:58:33 UTC
Tags:
cobaltstrike
Link:
https://app.any.run/tasks/dc19d143-23c9-4684-a2de-2f4045af1b9c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
CobaltStrikeBeacon
Create hunting rule
Link:
https://www.capesandbox.com/analysis/443541/
Detection(s):
Win.Exploit.D3b71c-9863766-0
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Sending an HTTP GET request
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/103192/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
anti-debug cobaltstrike obfuscated overlay packed
Link:
https://www.filescan.io/uploads/64dfcd4b2a89064e55914dd8/reports/6a63055a-08f1-4723-9ae3-9888f001c546/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f
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.
Malware family:
Cobalt Strike
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/58e06e20-e047-4cd4-8196-24056224e876
Result
Threat name:
CobaltStrike
Create hunting rule
Detection:
malicious
Classification:
troj
Score:
84 / 100
Link:
https://www.joesandbox.com/analysis/1293601
Signature
C2 URLs / IPs found in malware configuration
Found malware configuration
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Yara detected CobaltStrike
Behaviour
Behavior Graph:
Download SVG
Detection:
cobaltstrike
Create hunting rule
Link:
https://mwdb.cert.pl/sample/b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f/
Threat name:
Win32.Backdoor.CobaltStrikeBeacon
Create hunting rule
Status:
Malicious
First seen:
2023-08-18 10:09:15 UTC
File Type:
PE (Exe)
AV detection:
17 of 38 (44.74%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=xbpb46nripbqrjyhxbvye7ouxlga2isaujqm7f6dvfcps3ewba7q._file
Verdict:
malicious
Label(s):
cobaltstrike
Create hunting rule
Similar samples:
0a4437b6e8f7ac6aa163f0596e3921e114e0cd1bfde192d3ddd5f34d57698336
CobaltStrike
2a2f594dc53b5be16a0ca9e5feaa1387012c1e5f1d50a0168aa3991c47966a67
CobaltStrike
42b23dafaf9df05efbacd78b76d24668a1c74b8d6fb7695ecf871532a8bd2f4e
CobaltStrike
6fae8cbe4cd8580d3ce09ad24e7a827b1985eda99ce00dcde8d345a2be509e01
CobaltStrike
7f7191602d1224ce2b9636436f6a61cb47d5281fd1e4e7f2a49aabfb0e73ed5c
CobaltStrike
91bd127fe5f8e96e424dc509a6910edde262142eeadd6ba9f316cb5bde12221e
CobaltStrike
baa899492c09989f554a0a744b87c30caa6f0ceddf4589a22418991513f0cf27
CobaltStrike
d8f94dd6d50eb4dd0528f3784883e20eb8499f5188e596de217039a9dff61e64
CobaltStrike
+ 337 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Link:
https://tria.ge/reports/230818-yps8pseh8t/
Unpacked files
SH256 hash:
b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f
MD5 hash:
577c461ef8030e9feece3cdb5054b888
SHA1 hash:
d53c241ced618571ed579a3d2b7ddb19a4a54308
Detections:
cobaltstrike_xor_config
Create hunting rule
Link:
https://www.unpac.me/results/995993da-eaef-449f-8f85-349994008e57/
Malware family:
CobaltStrike
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/b85e1e79b143/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/b85e1e79b143c308a707b86b827dd4bacc0d2240a260cf97c3a944f96c96083f

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: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_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__Sleeve_BeaconLoader_x86_o_v4_3_v4_4_v4_5_and_v4_6
Create hunting rule
Author:gssincla@google.com
Rule name:CS_beacon
Create hunting rule
Author:Etienne Maynier tek@randhome.io
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_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:maldoc_find_kernel32_base_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
Rule name:maldoc_getEIP_method_1
Create hunting rule
Author:Didier Stevens (https://DidierStevens.com)
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:meth_get_eip
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_peb_parsing
Create hunting rule
Author:Willi Ballenthin
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:SUSP_XORed_Mozilla
Create hunting rule
Author:Florian Roth (Nextron Systems)
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:SUSP_XORed_URL_in_EXE
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:SUSP_XORed_URL_in_EXE_RID2E46
Create hunting rule
Author:Florian Roth
Description:Detects an XORed URL in an executable
Reference:https://twitter.com/stvemillertime/status/1237035794973560834
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
Create hunting rule
Description:Rule for beacon reflective loader
Rule name:Windows_Trojan_CobaltStrike_f0b627fc
Create hunting rule
Author:Elastic Security
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_7bc0f998
Create hunting rule
Author:Elastic Security
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:Windows_Trojan_Metasploit_c9773203
Create hunting rule
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

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/443541/

Comments