MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8. 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 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8
SHA3-384 hash: 53df5c8c0fa23a43c5277582e268514a0aef06c6e3f050eaa264a17b84514d68b95845a516c898dfa4b5fcedfac4f03a
SHA1 hash: 0b80a3603e6a919232fb2ef003e56baa15f52f75
MD5 hash: 482763510b94fcba0f140baf71913c52
humanhash: fifteen-whiskey-jig-charlie
File name:RFQ 071.23 020.23.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:688'272 bytes
First seen:2023-03-30 07:51:47 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 6e7f9a29f2c85394521a08b9f31f6275 (278 x GuLoader, 44 x RemcosRAT, 40 x VIPKeylogger)
ssdeep 12288:vMw4EAPcLqbFLPc3eBxnt8pxlZT3yZrn0aHDyq9DSXALFW+JGcaLUn:vMwtAPcLqbFPseBxyB3yBDyq0GlBn
TLSH T1BEE41241377CDA23E6A6787F6022B25C31FEAE106A55C965B6633EFE5D783012D0B203
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 71c496b6b696cc71 (9 x SnakeKeylogger, 4 x GuLoader, 1 x AgentTesla)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-11-23T01:12:09Z
Valid to:2025-11-22T01:12:09Z
Serial number: 2495cbe49e20c11d51791548a2c9ac79a2ea1bdf
Thumbprint Algorithm:SHA256
Thumbprint: e4d9849781bdf6e8e1df29ff6a65bae17948fe5120e158455213dd068f7b4291
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
239
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ 071.23 020.23.exe
Verdict:
Malicious activity
Analysis date:
2023-03-30 07:52:32 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/3e9cef90-7b95-4a43-9c80-f1839c34a340

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/378743/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% subdirectories
Creating a file
Delayed reading of the file
Sending a custom TCP request
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/75727/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
guloader icedid overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/64253fa3688c0e6397b3a62c/reports/47bece4e-af53-4ad5-ba3b-f0bdb0ebd651/overview
Verdict:
Malicious
Labled as:
Trojan.GenericFCA.Agent
Link:
https://www.hybrid-analysis.com/sample/536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8
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.
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/a9ca3aaa-e15c-47a9-97d6-ac0ce6706db7
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1204945
Signature
Hides threads from debuggers
Multi AV Scanner detection for submitted file
Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines)
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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 harvest and steal ftp login credentials
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 837868 Sample: RFQ_071.23_020.23.exe Startdate: 30/03/2023 Architecture: WINDOWS Score: 100 32 googlehosted.l.googleusercontent.com 2->32 34 drive.google.com 2->34 36 doc-04-40-docs.googleusercontent.com 2->36 42 Multi AV Scanner detection for submitted file 2->42 44 Yara detected GuLoader 2->44 46 Yara detected AgentTesla 2->46 48 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 2->48 8 RFQ_071.23_020.23.exe 4 40 2->8         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\Pilosin.Rep, data 8->24 dropped 26 C:\Users\user\AppData\Local\...\System.dll, PE32 8->26 dropped 28 C:\Users\user\AppData\Local\...\AdvSplash.dll, PE32 8->28 dropped 30 3 other files (none is malicious) 8->30 dropped 50 Writes to foreign memory regions 8->50 52 Tries to detect Any.run 8->52 54 Hides threads from debuggers 8->54 12 CasPol.exe 12 8->12         started        16 CasPol.exe 8->16         started        18 CasPol.exe 8->18         started        signatures6 process7 dnsIp8 38 drive.google.com 142.250.185.110, 443, 49820 GOOGLEUS United States 12->38 40 googlehosted.l.googleusercontent.com 142.250.185.161, 443, 49821 GOOGLEUS United States 12->40 56 Tries to steal Mail credentials (via file / registry access) 12->56 58 Tries to harvest and steal ftp login credentials 12->58 60 Tries to harvest and steal browser information (history, passwords, etc) 12->60 66 2 other signatures 12->66 20 WerFault.exe 22 16 12->20         started        22 conhost.exe 12->22         started        62 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->62 64 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->64 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-03-27 14:37:35 UTC
File Type:
PE (Exe)
Extracted files:
12
AV detection:
12 of 24 (50.00%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=knvf2dqkakb2ea35tia67l4sytqrszd22o4kutleirq55gcdth4a._file
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger spyware stealer trojan
Link:
https://tria.ge/reports/230330-jqd3vadb3z/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Checks QEMU agent file
Loads dropped DLL
AgentTesla
Guloader,Cloudeye
Unpacked files
SH256 hash:
7a9ddee34562cd3703f1502b5c70e99cd5bba15de2b6845a3555033d7f6cb2a5
MD5 hash:
564bb0373067e1785cba7e4c24aab4bf
SHA1 hash:
7c9416a01d821b10b2eef97b80899d24014d6fc1
Link:
https://www.unpac.me/results/c137873c-ac39-4fd8-beba-eb69b9ee568b/
SH256 hash:
13674c90d4c98376d509beb8e81e61daba16d6c66492238746777ff88cd1d6a5
MD5 hash:
6e6d146807eeb6c2b0d0349a3b6157ad
SHA1 hash:
5eeff5fc7e5a269a33f5f110e766af66230c4bbe
Link:
https://www.unpac.me/results/c137873c-ac39-4fd8-beba-eb69b9ee568b/
SH256 hash:
37e8190ee63577d0eb329d0f00b638de1d8ea7b2ac2fdbc3f1aa8a44f8bafe2d
MD5 hash:
c779731f7dcc2bd7b2a71a796cbebdcb
SHA1 hash:
ff6b63aa4d554ba7316dae609a7fb9d31844da52
Link:
https://www.unpac.me/results/c137873c-ac39-4fd8-beba-eb69b9ee568b/
SH256 hash:
62b3db0446750ca9fd693733eec927acc1f50012a47785343286e63b650b7621
MD5 hash:
1871af84805057b5ebc05ee46b56625d
SHA1 hash:
50e1c315ad30f5f3f300c7cd9dd0d5d626fe0167
Link:
https://www.unpac.me/results/c137873c-ac39-4fd8-beba-eb69b9ee568b/
SH256 hash:
536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8
MD5 hash:
482763510b94fcba0f140baf71913c52
SHA1 hash:
0b80a3603e6a919232fb2ef003e56baa15f52f75
Link:
https://www.unpac.me/results/c137873c-ac39-4fd8-beba-eb69b9ee568b/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/536a5d0e0a02/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/536a5d0e0a0283a2037d9a01efaf92c4e119647ad3b8aa4d644461de984399f8

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

File information

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

  
Delivery method
Other
Cape
Cape
https://www.capesandbox.com/analysis/378743/

Comments