MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8. 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: 14


Intelligence 14 IOCs YARA 3 File information Comments 1
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8
SHA3-384 hash: db91daaa8e9087221bfe89682de66d5f19dc8e3f592fb7dcc7b70ce0998b8a21769d382a4e518afdb89d77d14939f89c
SHA1 hash: acc4bf41ba813bfaefed3c916d4e6a8554609a06
MD5 hash: e57e1575e0737614cd18c1320b1b1183
humanhash: stream-xray-fish-cat
File name:e57e1575e0737614cd18c1320b1b1183
Download: download sample
Signature GuLoader
Create hunting rule
File size:336'296 bytes
First seen:2023-05-31 09:26:49 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b78ecf47c0a3e24a6f4af114e2d1f5de (300 x GuLoader, 23 x Formbook, 21 x RemcosRAT)
ssdeep 6144:eBerKbGa08c3c5ltQ0amlCszWBRJvh6GJxCwvzfYGlmUL:HaGatrvlaRJZ6mvzrmK
Threatray 785 similar samples on MalwareBazaar
TLSH T1EF64E04121A5BC53CC4D5DF2781BE5ED8D671EB00AAC963AEFD07A282B31F4FA706181
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 c0c4f47864647864 (4 x GuLoader, 3 x Loki, 3 x AgentTesla)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2022-08-30T00:06:26Z
Valid to:2025-08-29T00:06:26Z
Serial number: 56d7a6da5aab033016870fabc2f7eca3dce7f77d
Thumbprint Algorithm:SHA256
Thumbprint: 638a60ed23a20d800c29f90e3f88fe8b21045422224da252764f236838be552b
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
1
# of downloads :
243
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
d9eca8a9237d39e32b892cacd27ac633
Verdict:
Malicious activity
Analysis date:
2023-05-31 04:00:25 UTC
Tags:
opendir exploit cve-2017-11882 loader
Link:
https://app.any.run/tasks/d9995a3e-9aba-425f-bce1-8711aed3bd16

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/394019/
Detection(s):
SecuriteInfo.com.Mal.Generic-S.31020.16397.20236.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Searching for the window
Creating a window
Creating a file in the %temp% subdirectories
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/88813/overview
Behaviour
MalwareBazaar
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
buer lolbin overlay packed shell32.dll
Link:
https://www.filescan.io/uploads/647712e91bea9b45c11d694c/reports/e3d675a2-6e72-4383-963a-4355e8153296/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_70%
Link:
https://www.hybrid-analysis.com/sample/733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8
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/fb858d55-d2f6-4525-a32b-4b29827d6095
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1245920
Signature
Antivirus detection for URL or domain
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
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)
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2023-05-29 18:07:28 UTC
File Type:
PE (Exe)
Extracted files:
5
AV detection:
14 of 37 (37.84%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=om57rafzloijo3dop4dgq6gviuguzkractxtmqcwtf6lnre5q74a._file
Verdict:
malicious
Label(s):
cloudeye
Create hunting rule
Similar samples:
0aca8e757450257b435be941b91b79bedc38d9b25be3a60b10a52aec61a158a8
GuLoader
2a3b878db3d93241bec1fa344d59275cec331fa159ea90c26d8430f4f4a5b9e5
GuLoader
47e8a43a5dfcefe4d6850764bb413ffeab6724be3a37620853b686c9fb23db34
GuLoader
629156764548d3bdbc062de11f6ad819bb0d7d166aac339b04674861df522206
GuLoader
723ff97e6559f6558c288ca693898592a21aab28c003883ca13b81667d7e3aef
GuLoader
7d6e9247de0527fa4c0939c4f6e6726a35cb5f39492a7aeab5614ac1ab29b294
GuLoader
86cdb06b975dfb24d11bf83bbe33b39b8eb49c1bb514c2d508c05ef3d9b3be01
GuLoader
c627b8bb6c4ea0cf03aa2d209d0ecc53ff9784283328dabd44c1675aef0939c2
GuLoader
d03b9ead3cfc79c7495986f26b97dbe24b0558314a4993f595c80f8817295c48
GuLoader
dc5da53a5e93a588335b6561258d1540ac7d696c633d03de92e72d8e53254234
GuLoader
+ 775 additional samples on MalwareBazaar
Result
Malware family:
lokibot
Create hunting rule
Score:
  10/10
Tags:
family:lokibot collection discovery spyware stealer trojan
Link:
https://tria.ge/reports/230531-leq95sed6w/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious behavior: RenamesItself
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
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 profiles
Checks installed software on the system
Checks QEMU agent file
Loads dropped DLL
Reads user/profile data of web browsers
Lokibot
Malware Config
C2 Extraction:
http://185.246.220.85/chang1/five/fre.php
http://kbfvzoboss.bid/alien/fre.php
http://alphastand.trade/alien/fre.php
http://alphastand.win/alien/fre.php
http://alphastand.top/alien/fre.php
Unpacked files
SH256 hash:
fa4ab1d6f79fd677433a31ada7806373a789d34328da46ccb0449bbf347bd73e
MD5 hash:
3f176d1ee13b0d7d6bd92e1c7a0b9bae
SHA1 hash:
fe582246792774c2c9dd15639ffa0aca90d6fd0b
Link:
https://www.unpac.me/results/913f0d6a-2a78-470e-ac9e-f97f5fc65293/
SH256 hash:
733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8
MD5 hash:
e57e1575e0737614cd18c1320b1b1183
SHA1 hash:
acc4bf41ba813bfaefed3c916d4e6a8554609a06
Link:
https://www.unpac.me/results/913f0d6a-2a78-470e-ac9e-f97f5fc65293/
Malware family:
Lokibot
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/733bf880b95b/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.03
Link:
https://yomi.yoroi.company/submissions/733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:SUSP_NullSoftInst_Combo_Oct20_1
Create hunting rule
Author:Florian Roth (Nextron Systems)
Description:Detects suspicious NullSoft Installer combination with common Copyright strings
Reference:https://twitter.com/malwrhunterteam/status/1313023627177193472

File information

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

Web download

GuLoader

Executable exe 733bf880b95b90976c6e7f066878d5450d4caa2014ef364056997cb6c49d87f8

(this sample)

  
Delivery method
Distributed via web download
  
URLhaus
https://urlhaus.abuse.ch/url/2647320/
Cape
Cape
https://www.capesandbox.com/analysis/394019/

Comments


Avatar
zbet commented on 2023-05-31 09:26:50 UTC

url : hxxp://45.66.230.128/110/IE_CACHE.exe