MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39. 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: 18


Intelligence 18 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39
SHA3-384 hash: abf8c36d185fdd2ea9942e6a0a43c284fdf08c38254f0ecd47d14323a34227c31a8b4497fa928032c5778f605e0fd5e7
SHA1 hash: c3037c0ebf33b6e3a015e4afa74fc9c9c63d88d3
MD5 hash: 6c850692db8d5b590c88b2fc3794d25f
humanhash: idaho-don-don-shade
File name:scan0925.bat
Download: download sample
Signature GuLoader
Create hunting rule
File size:1'137'096 bytes
First seen:2025-09-25 21:08:05 UTC
Last seen:2025-10-09 14:56:37 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (278 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger)
ssdeep 24576:NTuiA0Ag5fLfk5tYte5Q2+smFX/22opSkG/UYp:NTua5rkMte8t5upSkGv
Threatray 1'739 similar samples on MalwareBazaar
TLSH T13535BE803D9C8097F76E4EB3744E94A124A42CB9B7F120DF6B94771900B27E255BEE6C
TrID 47.3% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
15.9% (.EXE) Win64 Executable (generic) (10522/11/4)
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) (4504/4/1)
Magika pebin
Reporter cocaman
Tags:bat exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
197
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
remcos
Create hunting rule
ID:
1
File name:
scan0925.bat
Verdict:
Malicious activity
Analysis date:
2025-09-25 21:08:38 UTC
Tags:
auto-reg rat remcos remote evasion stealer
Link:
https://app.any.run/tasks/d8bfa9ac-165e-4c58-bcc5-047b0d907c5e

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Guloader
Create hunting rule
Link:
https://www.capesandbox.com/analysis/29085/
Detection(s):
SecuriteInfo.com.Win32.Malware-gen.76734146.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
70%
Link:
https://cyber-fortress.com/docs/result/index.php?id=68d5af541e4783989051fa93
Tags:
injection obfusc
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Searching for the window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% directory
Delayed reading of the file
Creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
adaptive-context installer masquerade microsoft_visual_cc obfuscated overlay packed packer_detected
Link:
https://www.filescan.io/uploads/68d5af5974e5a2898993a3bd/reports/8192d967-efd0-45b1-87d5-96d567e51359/overview
Verdict:
Malicious
Labled as:
HEUR/AGEN.1338438
Link:
https://www.hybrid-analysis.com/sample/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39
Verdict:
Malicious
File Type:
exe x32
First seen:
2025-09-25T17:00:00Z UTC
Last seen:
2025-09-25T17:00:00Z UTC
Hits:
~1000
Detections:
Trojan.Win32.Guloader.sb Trojan.NSIS.Makoob.sbe Trojan.NSIS.Makoob.sba
Link:
https://opentip.kaspersky.com/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39/results?tab=lookup
Verdict:
Suspicious
Link:
https://analyze.intezer.com/analyses/e39bf4de-69a5-4854-8303-ed3487efa2d6
Result
Threat name:
Remcos
Create hunting rule
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1784482
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
C2 URLs / IPs found in malware configuration
Creates autostart registry keys with suspicious names
Detected Remcos RAT
Found direct / indirect Syscall (likely to bypass EDR)
Found malware configuration
Joe Sandbox ML detected suspicious sample
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Switches to a custom stack to bypass stack traces
Tries to detect virtualization through RDTSC time measurements
Yara detected Remcos RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1784482 Sample: scan0925.bat.exe Startdate: 25/09/2025 Architecture: WINDOWS Score: 100 40 196.251.117.66 xneeloZA Seychelles 2->40 42 drive.usercontent.google.com 2->42 44 drive.google.com 2->44 46 Found malware configuration 2->46 48 Antivirus / Scanner detection for submitted sample 2->48 50 Multi AV Scanner detection for submitted file 2->50 52 3 other signatures 2->52 9 scan0925.bat.exe 2 61 2->9         started        13 remcos.exe 13 2->13         started        15 remcos.exe 13 2->15         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\...\System.dll, PE32 9->34 dropped 68 Tries to detect virtualization through RDTSC time measurements 9->68 70 Switches to a custom stack to bypass stack traces 9->70 72 Found direct / indirect Syscall (likely to bypass EDR) 9->72 17 scan0925.bat.exe 2 10 9->17         started        signatures6 process7 dnsIp8 36 drive.usercontent.google.com 142.250.73.129, 443, 49722 GOOGLEUS United States 17->36 38 drive.google.com 142.251.215.238, 443, 49721 GOOGLEUS United States 17->38 28 C:\ProgramData\Remcos\remcos.exe, PE32 17->28 dropped 30 C:\ProgramData\...\remcos.exe:Zone.Identifier, ASCII 17->30 dropped 54 Detected Remcos RAT 17->54 56 Creates autostart registry keys with suspicious names 17->56 58 Found direct / indirect Syscall (likely to bypass EDR) 17->58 22 remcos.exe 32 17->22         started        file9 signatures10 process11 file12 32 C:\Users\user\AppData\Local\...\System.dll, PE32 22->32 dropped 60 Antivirus detection for dropped file 22->60 62 Multi AV Scanner detection for dropped file 22->62 64 Tries to detect virtualization through RDTSC time measurements 22->64 66 2 other signatures 22->66 26 remcos.exe 13 22->26         started        signatures13 process14
Score:
79%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39
Verdict:
inconclusive
YARA:
5 match(es)
Tags:
Executable NSIS Installer PE (Portable Executable) PE File Layout Win 32 Exe x86
Link:
https://app.malva.re/file/6c850692db8d5b590c88b2fc3794d25f
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39/
Verdict:
Malicious
Threat:
Family.REMCOS
Link:
https://tip.neiki.dev/file/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2025-09-25 20:50:46 UTC
File Type:
PE (Exe)
Extracted files:
24
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=rzvyz72hp7tsqqj42nkh4gjzsbj3qaah3crcfafoqbvehsiohu4q._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
062928672183df1ba24e977e957417803005040e9c7175cc4352c976fb6cdfe2
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209efa13cbc37d4365f43a1211c375585cc793f28fa642074d4b4b1ad4d68046
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2c777fd566f8c2554fb11b644cc77b7bc339eda611370f34eb3aa7873a091bd3
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640568c2888a3c8e5736b78a02b6a09b81d7eea3f8a0bdfcb48492fc8c84a90d
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7be61fe6f4a50beaa9f069ab567efbeedabb34a1867a67a14637c87dc49c344c
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a1443ce2d09567434662a381c51bc50f3dc5bde281da8214713ba1c3dd17bfed
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c138eb32a0d4ade14eca1c5d68391ea06addbe969593b68470bd593539053b01
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c90b846cc5845b9f5ad7dd14d88d42e1d7b6093094b672ec679ef232ea694698
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e917a06afe450e6432b00a8acebee1e4e8bc39f689188e54b93498a2a1204669
GuLoader
error
GuLoader
+ 1'729 additional samples on MalwareBazaar
Result
Malware family:
remcos
Create hunting rule
Score:
  10/10
Tags:
family:remcos collection discovery persistence rat
Link:
https://tria.ge/reports/250925-zy8kesysby/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
System Location Discovery: System Language Discovery
Drops file in Program Files directory
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
Looks up external IP address via web service
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
Detected Nirsoft tools
NirSoft MailPassView
NirSoft WebBrowserPassView
Remcos
Remcos family
Malware Config
C2 Extraction:
196.251.117.66:2404
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/f7e42f3f-f15e-4b33-abdb-8d1f96f1939e
Unpacked files
SH256 hash:
8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39
MD5 hash:
6c850692db8d5b590c88b2fc3794d25f
SHA1 hash:
c3037c0ebf33b6e3a015e4afa74fc9c9c63d88d3
Link:
https://www.unpac.me/results/38de5087-58a9-40cf-9b32-a3c4b7e90aa0/
SH256 hash:
b7823a15e7b1866ba3d77248f750b66505859d264cfc39d8c8c5e812f8ae4a81
MD5 hash:
a1da6788aeaf78ca4ae1dece8019e49d
SHA1 hash:
d770155e6e9aa69223be198c44a8da26a1756d89
Link:
https://www.unpac.me/results/38de5087-58a9-40cf-9b32-a3c4b7e90aa0/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/8e6b8cff477f/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
0.79
Link:
https://yomi.yoroi.company/submissions/8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39

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:Detect_NSIS_Nullsoft_Installer
Create hunting rule
Author:Obscurity Labs LLC
Description:Detects NSIS installers by .ndata section + NSIS header string

File information

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

Malspam

GuLoader

zip 26a0e6f7a66c9eeb9c129327ebe3ab49ad39212c644e7f4ac86f54eb69846456

GuLoader

Executable exe 8e6b8cff477fe728413cd3547e19399053b80007d8a22280ae806a43c90e3d39

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 26a0e6f7a66c9eeb9c129327ebe3ab49ad39212c644e7f4ac86f54eb69846456
Cape
Cape
https://www.capesandbox.com/analysis/29085/
  
Dropped by
MD5 8260c941e4016570e4bd7b5cfa819f99

Comments