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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 d46aa970a11e338fcd8ffa41a2cbcefe69970939beb45cc74b99a29664446933. 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: 12


Intelligence 12 IOCs YARA 2 File information Comments

SHA256 hash: d46aa970a11e338fcd8ffa41a2cbcefe69970939beb45cc74b99a29664446933
SHA3-384 hash: 79e78514f3920bb31ba47da4217355c2ed5f305d03bf3378fc31ce3b6d253fd2183a4572b5350c592e9aa4b9a81c2348
SHA1 hash: 93a1c3a5278690c449722b2367c18e5e4d62cd8a
MD5 hash: 06e72bd105ab1f647ae8b0596cf21f01
humanhash: indigo-nuts-hotel-nineteen
File name:NO.7765876.exe
Download: download sample
Signature GuLoader
File size:257'904 bytes
First seen:2023-06-19 14:02:06 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash e2a592076b17ef8bfb48b7e03965a3fc (419 x GuLoader, 63 x RemcosRAT, 52 x AgentTesla)
ssdeep 6144:q4t6LsLDkSDBYewl9O8bYtd+2mIDmTQK92iGaUlLng8N:qkLDkWRO7b8d+ZEfixin1
Threatray 1'047 similar samples on MalwareBazaar
TLSH T18744125527B5E083DDE28DB152A8B277BEB7B9023864571F23307B4839623D2EA1D35C
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 b153dbdbc9cb9796 (2 x GuLoader)
Reporter malwarelabnet
Tags:exe GuLoader remcos signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2023-05-31T10:01:09Z
Valid to:2026-05-30T10:01:09Z
Serial number: 458347f2f4cea6b4cbcb063891a20149211f7162
Thumbprint Algorithm:SHA256
Thumbprint: fb25b1240af61b170a8d007d6ac80514d0e862b4c82ace3bf51b690aadd3841c
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence


File Origin
# of uploads :
1
# of downloads :
337
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
NO.7765876.exe
Verdict:
Suspicious activity
Analysis date:
2023-06-19 14:05:10 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Delayed reading of the file
Sending a custom TCP request
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
lolbin overlay packed shell32.dll
Result
Threat name:
GuLoader, Remcos
Detection:
malicious
Classification:
troj.evad.phis.spyw
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Contains functionality to modify clipboard data
Detected unpacking (changes PE section rights)
Installs a global keyboard hook
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sigma detected: Remcos
Tries to detect Any.run
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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)
Yara detected GuLoader
Yara detected Remcos RAT
Yara detected WebBrowserPassView password recovery tool
Behaviour
Behavior Graph:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 890588 Sample: NO.7765876.exe Startdate: 19/06/2023 Architecture: WINDOWS Score: 100 30 geoplugin.net 2->30 44 Antivirus detection for URL or domain 2->44 46 Multi AV Scanner detection for submitted file 2->46 48 Yara detected GuLoader 2->48 50 4 other signatures 2->50 8 NO.7765876.exe 4 30 2->8         started        signatures3 process4 file5 26 C:\Users\user\AppData\Local\...\System.dll, PE32 8->26 dropped 52 Detected unpacking (changes PE section rights) 8->52 54 Contains functionality to modify clipboard data 8->54 56 Tries to detect Any.run 8->56 12 NO.7765876.exe 3 15 8->12         started        signatures6 process7 dnsIp8 32 156.96.113.118, 50143, 80 VDI-NETWORKUS United States 12->32 34 geoplugin.net 178.237.33.50, 50146, 80 ATOM86-ASATOM86NL Netherlands 12->34 36 155.94.136.161, 2404, 50144, 50145 ASN-QUADRANET-GLOBALUS United States 12->36 28 C:\ProgramData\remcos\logs.dat, data 12->28 dropped 58 Tries to detect Any.run 12->58 60 Maps a DLL or memory area into another process 12->60 62 Installs a global keyboard hook 12->62 17 NO.7765876.exe 1 12->17         started        20 NO.7765876.exe 1 12->20         started        22 NO.7765876.exe 1 12->22         started        24 27 other processes 12->24 file9 signatures10 process11 signatures12 38 Tries to steal Instant Messenger accounts or passwords 17->38 40 Tries to steal Mail credentials (via file / registry access) 17->40 42 Tries to harvest and steal browser information (history, passwords, etc) 24->42
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2023-06-14 03:52:02 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
19 of 37 (51.35%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:remcos botnet:remotehost collection rat spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook accounts
Checks QEMU agent file
Loads dropped DLL
Reads user/profile data of web browsers
NirSoft MailPassView
NirSoft WebBrowserPassView
Nirsoft
Remcos
Malware Config
C2 Extraction:
155.94.136.161:2404
Unpacked files
SH256 hash:
bd046e6497b304e4ea4ab102cab2b1f94ce09bde0eebba4c59942a732679e4eb
MD5 hash:
17ed1c86bd67e78ade4712be48a7d2bd
SHA1 hash:
1cc9fe86d6d6030b4dae45ecddce5907991c01a0
SH256 hash:
d46aa970a11e338fcd8ffa41a2cbcefe69970939beb45cc74b99a29664446933
MD5 hash:
06e72bd105ab1f647ae8b0596cf21f01
SHA1 hash:
93a1c3a5278690c449722b2367c18e5e4d62cd8a
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Author:albertzsigovits
Rule name:PE_Potentially_Signed_Digital_Certificate
Author:albertzsigovits

File information


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

Comments