MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea. 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: 8


Intelligence 8 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea
SHA3-384 hash: 0f7846e6f14a918ade26563046b27aec6f09f1ce3f304d5ec7f5bb0924ea2e977cc70dd35bb442bdce62f55b562674bc
SHA1 hash: e330e5820951002ce602fb811245c407eaa4d4c8
MD5 hash: 974dc5e938735d5f8db85abfadd4027a
humanhash: beer-winter-vermont-west
File name:Messersi 221209-2009.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:211'016 bytes
First seen:2022-12-19 13:53:17 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (295 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 3072:JQZvOsPPKedco/bBmK9Tpa3vUPwwt6U6ih/IFSWiha+Ld/adNq/VN/2uIGEe4Nb2:JBejn91asPwwNrAbiFLCNEeJdqgzI
Threatray 269 similar samples on MalwareBazaar
TLSH T1672412B52AF1C077F9966A700AF6AB36F1F293441820114777940FEE3D77201EA256DB
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 b2a89c96a2cada72 (2'283 x Formbook, 981 x Loki, 803 x AgentTesla)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Brdbillernes
Issuer:Brdbillernes
Algorithm:sha256WithRSAEncryption
Valid from:2022-02-28T10:59:38Z
Valid to:2025-02-27T10:59:38Z
Serial number: -2b831da10b2e78be
Thumbprint Algorithm:SHA256
Thumbprint: 3fefca7dd12f6ea4e15a72af85e4e83423f1a224e4c9e451a3be72b133b58e4b
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
176
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
guloader
Create hunting rule
ID:
1
File name:
Messersi 221209-2009.exe
Verdict:
Malicious activity
Analysis date:
2022-12-19 13:56:01 UTC
Tags:
guloader
Link:
https://app.any.run/tasks/70727fc1-2db2-44eb-9872-8565891a7438

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/348012/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.31020.16397.20236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Verdict:
No Threat
Threat level:
  2/10
Confidence:
75%
Tags:
buer overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/63a06cfb041f5c9d658cd00b/reports/87d75b7b-f7e3-4b60-ba42-9d9a1556e376/overview
Result
Verdict:
UNKNOWN
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/328b06ff-47a6-4000-a9c0-d1ca0c321255
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1137201
Signature
Malicious sample detected (through community Yara rule)
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)
Snort IDS alert for network traffic
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 harvest and steal Putty / WinSCP information (sessions, passwords, etc)
Tries to steal Mail credentials (via file / registry access)
Uses the Telegram API (likely for C&C communication)
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: 769930 Sample: Messersi 221209-2009.exe Startdate: 19/12/2022 Architecture: WINDOWS Score: 100 26 api.telegram.org 2->26 32 Snort IDS alert for network traffic 2->32 34 Malicious sample detected (through community Yara rule) 2->34 36 Yara detected GuLoader 2->36 38 4 other signatures 2->38 8 Messersi 221209-2009.exe 2 32 2->8         started        signatures3 process4 file5 22 C:\Users\user\Ruskningen\...\libatk-1.0-0.dll, PE32+ 8->22 dropped 24 C:\Users\user\AppData\Local\...\System.dll, PE32 8->24 dropped 40 Writes to foreign memory regions 8->40 42 Tries to detect Any.run 8->42 12 CasPol.exe 15 11 8->12         started        16 CasPol.exe 8->16         started        18 CasPol.exe 8->18         started        signatures6 process7 dnsIp8 28 api.telegram.org 149.154.167.220, 443, 49884 TELEGRAMRU United Kingdom 12->28 30 103.171.1.58, 49848, 80 AARNET-AS-APAustralianAcademicandResearchNetworkAARNe unknown 12->30 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->44 46 Tries to steal Mail credentials (via file / registry access) 12->46 48 Tries to harvest and steal ftp login credentials 12->48 54 2 other signatures 12->54 20 conhost.exe 12->20         started        50 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->50 52 Queries sensitive BIOS Information (via WMI, Win32_Bios & Win32_BaseBoard, often done to detect virtual machines) 16->52 signatures9 process10
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2022-12-19 11:32:11 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
15 of 26 (57.69%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=pivsxeurkgxzjqg637kpnfphm3rovex23omnghegunh6i3wjghva._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
1aba3ebf5fc7d6221270fa7e13713216e06b678b197524a35d3a5cd9b1e0d857
GuLoader
5f2846d5daa6e5781427feb62144502ff1522b8250eadbfb7aa3602d04eac1fb
GuLoader
65dee75f5d4f0d7e0c1065a689ebe79f67c87a4d3d9654193164128e859a0ddd
GuLoader
75bb54e0d27dfeb0efa4680d7136307f9a82edef662e9fc3c4339b05b3fe7079
GuLoader
9cc0cf19e63fbf43ed381c94967a1c52a606452657cc05c17b27a1a07e2c5607
GuLoader
ac80582931ac0fbe465b81a7f53894d9eebf867cae0c9e2865136078826bb49a
GuLoader
b643d5ee1be492fcbfbfb4c9b9bf3da8460b74ab2097b96e6545318c92f2ee26
GuLoader
b76a4012988dbfb88640ddbe67bb6dc3ac26a142487f283af4933dd2a55f2cab
GuLoader
c1268d5dc321b64579a0a68ba97c32f315ebd23d2f895a47c72b9ed54172eb69
GuLoader
f98183a2ad674f8aae6ad47e7da8b48c80175148ba333f0f57b3e6eca64bfaa6
GuLoader
+ 259 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Link:
https://tria.ge/reports/221219-q7jszsab9y/
Behaviour
Enumerates physical storage devices
Drops file in System32 directory
Loads dropped DLL
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/82d32d6b-5db8-4d15-a996-dfdb0b577ea7/
SH256 hash:
7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea
MD5 hash:
974dc5e938735d5f8db85abfadd4027a
SHA1 hash:
e330e5820951002ce602fb811245c407eaa4d4c8
Link:
https://www.unpac.me/results/82d32d6b-5db8-4d15-a996-dfdb0b577ea7/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
Link:
https://yomi.yoroi.company/submissions/7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea

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:cobalt_strike_tmp01925d3f
Create hunting rule
Author:The DFIR Report
Description:files - file ~tmp01925d3f.exe
Reference:https://thedfirreport.com
Rule name:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader

File information

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

Malspam

GuLoader

Executable exe 7a2b2b929151af94c0dedfd4f695e766e2ea92fadb98d31c86a34fe46ec931ea

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/348012/

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