MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1. 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: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1
SHA3-384 hash: 0b6e7e5de80ed2399bb9fe157da1e1a92848401dd0b7a60c8646f02ac2296157888432fea548e56716ec57b1f3bb6e4f
SHA1 hash: 195f46fdee2b87519e1c4cf1d8326ceb61d01dde
MD5 hash: 674611215222d21b7b9657421f1d1336
humanhash: apart-carbon-kilo-potato
File name:rFactura.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:681'752 bytes
First seen:2023-03-15 14:12:58 UTC
Last seen:2023-03-15 15:38:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e160ef8e55bb9d162da4e266afd9eef3 (140 x GuLoader, 33 x RemcosRAT, 17 x AgentTesla)
ssdeep 12288:MRyaQ2nE0tLmRkE6Hp7m7HA1l8HygBrh+ftddOYLQnJf9:GEAmRj6J7Cw+SgBrhorOYq1
Threatray 411 similar samples on MalwareBazaar
TLSH T121E4014122A18821CBD967325FA7D2315725AD5D79358B8F27F9BF2B3FFD18348022A4
TrID 92.7% (.EXE) NSIS - Nullsoft Scriptable Install System (846567/2/133)
3.4% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
1.1% (.EXE) Win64 Executable (generic) (10523/12/4)
0.7% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
0.5% (.EXE) Win16 NE executable (generic) (5038/12/1)
File icon (PE):PE icon
dhash icon 30f0dcf0d00e0040 (3 x GuLoader)
Reporter FXOLabs
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-05-17T23:21:23Z
Valid to:2025-05-16T23:21:23Z
Serial number: 5d05388689eb522c75bba55af26e91c93c95563b
Thumbprint Algorithm:SHA256
Thumbprint: 9bd10b4008dcd9d71e50aef43b0a6fb74ac9eac2df7259a0712ae947faba7aeb
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
201
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
rFactura.exe
Verdict:
Malicious activity
Analysis date:
2023-03-15 14:18:04 UTC
Tags:
installer
Link:
https://app.any.run/tasks/32834373-7812-4413-835a-d2b9c6972c32

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/374548/
Detection(s):
SecuriteInfo.com.Trojan.NSIS.Agent.3546.14074.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file
Creating a file in the %temp% subdirectories
Sending a custom TCP request
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/6411d27022fbeb247a04e466/reports/e225ee5e-9e23-4cbf-8fe7-f9565a3250e2/overview
Verdict:
Malicious
Labled as:
Win/grayware_confidence_60%
Link:
https://www.hybrid-analysis.com/sample/1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1
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/351d1822-6d43-464f-931e-b1562b778938
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1194190
Signature
Hides threads from debuggers
May check the online IP address of the machine
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 Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Yara detected Telegram RAT
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 827090 Sample: rFactura.exe Startdate: 15/03/2023 Architecture: WINDOWS Score: 100 28 googlehosted.l.googleusercontent.com 2->28 30 drive.google.com 2->30 32 3 other IPs or domains 2->32 40 Multi AV Scanner detection for submitted file 2->40 42 Yara detected GuLoader 2->42 44 Yara detected Telegram RAT 2->44 46 3 other signatures 2->46 8 rFactura.exe 1 44 2->8         started        signatures3 process4 file5 20 C:\Users\user\AppData\Local\...\System.dll, PE32 8->20 dropped 22 C:\Users\user\AppData\...\vm3ddevapi64.dll, PE32+ 8->22 dropped 24 C:\Users\user\AppData\...\libgcc_s_seh-1.dll, PE32+ 8->24 dropped 26 C:\Users\user\AppData\...\IA2Marshal.dll, PE32+ 8->26 dropped 48 Writes to foreign memory regions 8->48 50 Tries to detect Any.run 8->50 52 Hides threads from debuggers 8->52 12 CasPol.exe 15 11 8->12         started        16 CasPol.exe 8->16         started        signatures6 process7 dnsIp8 34 api4.ipify.org 64.185.227.155, 443, 49810 WEBNXUS United States 12->34 36 drive.google.com 142.250.185.206, 443, 49804 GOOGLEUS United States 12->36 38 googlehosted.l.googleusercontent.com 142.250.186.65, 443, 49805 GOOGLEUS United States 12->38 54 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->54 56 Tries to steal Mail credentials (via file / registry access) 12->56 58 Tries to harvest and steal browser information (history, passwords, etc) 12->58 64 2 other signatures 12->64 18 conhost.exe 12->18         started        60 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->60 62 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->62 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2023-03-15 10:33:12 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=c5u2rgj2q5qjj6nevgt4uf5mhvtje6ixryzmbf5dgrucl6mcukyq._file
Verdict:
unknown
Similar samples:
28ca1fe12d85075d947b1bc3292c14cba784ed1e22287e56819d9a1d86b2f7e4
GuLoader
3e924b372c019c41e9995a276ce5c1b1487d14ceb9fbc8d606a09a83df5989b8
GuLoader
4db943d3621a557370a3585cd61db3f9835c65f350a2284c9d5f3024adb0ff07
GuLoader
5a70453a6b4f6a5dfd956507dcb364fa07bd6517f87ee23ed6d703f7ec1f6599
GuLoader
629156764548d3bdbc062de11f6ad819bb0d7d166aac339b04674861df522206
GuLoader
6578a27c9a339ad280d54a724c86f4c5a864fcd1da54b732fbbce40d861447da
GuLoader
723ff97e6559f6558c288ca693898592a21aab28c003883ca13b81667d7e3aef
GuLoader
d03b9ead3cfc79c7495986f26b97dbe24b0558314a4993f595c80f8817295c48
GuLoader
dc5da53a5e93a588335b6561258d1540ac7d696c633d03de92e72d8e53254234
GuLoader
+ 401 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/230315-rjed2ade49/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
Enumerates physical storage devices
Program crash
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Checks QEMU agent file
Loads dropped DLL
AgentTesla
Malware Config
C2 Extraction:
https://api.telegram.org/bot6012574707:AAF8I6NbDl2NvCRr484aAssdJ5P3-L4stPA/
Unpacked files
SH256 hash:
484f8e9f194ed9016274ef3672b2c52ed5f574fb71d3884edf3c222b758a75a2
MD5 hash:
960a5c48e25cf2bca332e74e11d825c9
SHA1 hash:
da35c6816ace5daf4c6c1d57b93b09a82ecdc876
Link:
https://www.unpac.me/results/25758ebf-c020-49a6-b970-d39e93667076/
SH256 hash:
1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1
MD5 hash:
674611215222d21b7b9657421f1d1336
SHA1 hash:
195f46fdee2b87519e1c4cf1d8326ceb61d01dde
Link:
https://www.unpac.me/results/25758ebf-c020-49a6-b970-d39e93667076/
Malware family:
GuLoader
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/1769a8993a87/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/1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1

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.

Malspam

GuLoader

Executable exe 1769a8993a876094f9a4a9a7ca17ac3d669279178e32c097a3346825f982a2b1

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/374548/

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