MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e. 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


GuLoader


Vendor detections: 9


Intelligence 9 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e
SHA3-384 hash: a81fdd96165eaeba495720fdbe6abef0badcdf6e60a5a30a2136271514a15464fe47f65bd171526bd7a2e1ceca9b50a5
SHA1 hash: 3cf46c4f455045bd30af8ad8b43e7c7c02ad78e5
MD5 hash: bf0d88c18ea7ad99b63e537b78b6f8e2
humanhash: cola-blue-fish-river
File name:SecuriteInfo.com.W32.Trojan.IHBA-8899.29098.27615
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'109'032 bytes
First seen:2023-10-09 08:48:57 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (137 x GuLoader, 55 x Formbook, 40 x VIPKeylogger)
ssdeep 24576:hGl0zEoircwR94F7qul5qbVwjtWKysxg5NKjJ5x4UfAa3ekPrK0:4qgoirMOKGVRKlTjSUYaukPl
Threatray 502 similar samples on MalwareBazaar
TLSH T1633533E517A0E426F620163E58A8576E49BCDDC428B107BB0FD17E8ECCB27025B6D78D
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10523/12/4)
9.9% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.6% (.EXE) Win16 NE executable (generic) (5038/12/1)
6.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 8672c0968690d8cd (2 x RemcosRAT, 1 x GuLoader)
Reporter SecuriteInfoCom
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-04-15T09:32:53Z
Valid to:2026-04-14T09:32:53Z
Serial number: 017041a2c2ff28191f3f7b886c45ddb0e0011883
Thumbprint Algorithm:SHA256
Thumbprint: fc0b81528248a8d7fcee935bd3b6d7d4342cd36fd8189dabf981d95359122aec
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
312
Origin country :
FR FR
Vendor Threat Intelligence
Detection(s):
SecuriteInfo.com.W32.Trojan.IHBA-8899.29098.27615.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a process from a recently created file
Sending a custom TCP request
Launching a process
Gathering data
Gathering data
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/25452499-75ef-4879-b99c-88273f07f312
Result
Threat name:
Remcos, GuLoader
Create hunting rule
Detection:
malicious
Classification:
phis.troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1322049
Signature
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
Contains functionality to modify clipboard data
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Obfuscated command line found
Sigma detected: Remcos
Suspicious powershell command line found
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Instant Messenger accounts or passwords
Tries to steal Mail credentials (via file / registry access)
Tries to steal Mail credentials (via file registry)
Very long command line found
Writes to foreign memory regions
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1322049 Sample: SecuriteInfo.com.W32.Trojan... Startdate: 09/10/2023 Architecture: WINDOWS Score: 100 37 googlehosted.l.googleusercontent.com 2->37 39 geoplugin.net 2->39 41 2 other IPs or domains 2->41 53 Found malware configuration 2->53 55 Antivirus detection for URL or domain 2->55 57 Multi AV Scanner detection for submitted file 2->57 59 7 other signatures 2->59 10 SecuriteInfo.com.W32.Trojan.IHBA-8899.29098.27615.exe 2 33 2->10         started        signatures3 process4 file5 35 C:\Users\user\AppData\Local\...\Pentoses.Del, ASCII 10->35 dropped 71 Suspicious powershell command line found 10->71 14 powershell.exe 12 10->14         started        signatures6 process7 signatures8 73 Suspicious powershell command line found 14->73 75 Obfuscated command line found 14->75 77 Very long command line found 14->77 79 Found suspicious powershell code related to unpacking or dynamic code loading 14->79 17 powershell.exe 13 14->17         started        20 conhost.exe 14->20         started        process9 signatures10 49 Writes to foreign memory regions 17->49 51 Maps a DLL or memory area into another process 17->51 22 wab.exe 6 14 17->22         started        process11 dnsIp12 43 94.156.6.57, 49743, 49744, 49745 NET1-ASBG Bulgaria 22->43 45 drive.google.com 142.250.68.110, 443, 49741 GOOGLEUS United States 22->45 47 2 other IPs or domains 22->47 61 Tries to harvest and steal browser information (history, passwords, etc) 22->61 63 Maps a DLL or memory area into another process 22->63 26 wab.exe 1 22->26         started        29 wab.exe 1 22->29         started        31 wab.exe 14 22->31         started        33 2 other processes 22->33 signatures13 process14 signatures15 65 Tries to steal Instant Messenger accounts or passwords 26->65 67 Tries to harvest and steal browser information (history, passwords, etc) 26->67 69 Tries to steal Mail credentials (via file / registry access) 29->69
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2023-10-09 03:47:37 UTC
File Type:
PE (Exe)
Extracted files:
19
AV detection:
14 of 38 (36.84%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rb44uwi4otlpjv7rp7evhbtfhdwz5uaqg5k7y24qdfhi2253xwpa._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
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23900cecd289350547647157100876e2f0cd92fac6a8f4354a5bdd8e2d3dea3b
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26e297f8f4bf5837af4c8b5132598c2eed45245c4f6baf0e8c960ff2a555989e
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5f6366e20fde275710415f996748edb9f1091c0b0e47bf2ddc91a59ecd90d54c
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7bec152e6ebe8d516418fd4ad7c46211577c8841bce146a3e57d7b8eafa6e036
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80407312227a80e31ac1d171f2d9c8fb31ee16fc8d089d4c861d53b34e6630d2
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8c63c1e28683c7aa90cb40df346fe1d5dbc3b2bd994cd883cd7e551518486098
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b9772355669f37cc643520569eb699b6bd00e96999495404977d082b0ef4fbaf
GuLoader
d4bb1c789100f6305c61e2be96351d53f20c091fa032948fcece3f73a29e0861
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e044ecf0f485711cc6e4e8bbd56819838787b2365893783b3794a969ce2b5aeb
GuLoader
+ 492 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:remcos botnet:remotehost collection downloader persistence rat
Link:
https://tria.ge/reports/231009-kq1ghsdg97/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Adds Run key to start application
Legitimate hosting services abused for malware hosting/C2
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Guloader,Cloudeye
Remcos
Malware Config
C2 Extraction:
94.156.6.57:6657
Unpacked files
SH256 hash:
8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e
MD5 hash:
bf0d88c18ea7ad99b63e537b78b6f8e2
SHA1 hash:
3cf46c4f455045bd30af8ad8b43e7c7c02ad78e5
Link:
https://www.unpac.me/results/899b1f1b-8075-4bc2-9c8c-67463f663d6a/
Malware family:
Remcos
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8879ca591c74/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/8879ca591c74d6f4d7f17fc953866538ed9ed0103755fc6b90194e8d6bbbbd9e

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:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits

File information

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

Comments