MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 64838dfcbbe16affd2aefc5de3448644669df0a2a8d11065670b1a2f51f4da9c. 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 File information Comments 1

SHA256 hash: 64838dfcbbe16affd2aefc5de3448644669df0a2a8d11065670b1a2f51f4da9c
SHA3-384 hash: f1ef1c22133c041f2cc7006e0e410fdf2187b2b11e259edcb1df0b7f1a8ed3f7268bb6fde1d8788ea230a296cc28c600
SHA1 hash: a4e3bbc189eddd85f4c59f5a394ed7659bec6363
MD5 hash: a2b16784244bc0a74e15fbd1a6c990a5
humanhash: happy-red-orange-robert
File name:a2b16784244bc0a74e15fbd1a6c990a5
Download: download sample
Signature GuLoader
File size:275'960 bytes
First seen:2022-09-21 06:16:48 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (527 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 6144:bRlWoFJYIKFsxgsjbqMv4I3xGLBEciYY8FqI4Y:dknY7juf8GVt3t
Threatray 2'959 similar samples on MalwareBazaar
TLSH T18044F115367CC4D2C29A0B399C3A89F9856BBD172E95074B1B60BB7E39723B3812CF45
TrID 48.8% (.EXE) Win32 Executable MS Visual C++ (generic) (31206/45/13)
16.4% (.EXE) Win64 Executable (generic) (10523/12/4)
10.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
7.8% (.EXE) Win16 NE executable (generic) (5038/12/1)
7.0% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon 8c03f09cec7082d4 (8 x GuLoader)
Reporter zbetcheckin
Tags:32 exe GuLoader signed

Code Signing Certificate

Organisation:
Issuer:
Algorithm:sha256WithRSAEncryption
Valid from:2021-12-31T16:40:43Z
Valid to:2024-12-30T16:40:43Z
Serial number: -72a25dd2b2f4aa60
Thumbprint Algorithm:SHA256
Thumbprint: a799579c70b42f35cedd14c1849cb886072231b7ab8fad98d182b0f6fe42c8f4
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence


File Origin
# of uploads :
1
# of downloads :
505
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a2b16784244bc0a74e15fbd1a6c990a5
Verdict:
Malicious activity
Analysis date:
2022-09-21 06:21:11 UTC
Tags:
n/a

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

Behaviour
Searching for the window
Creating a window
Creating a file in the %AppData% subdirectories
Delayed reading of the file
Creating a file in the %temp% subdirectories
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Behaviour
MalwareBazaar
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
75%
Tags:
overlay packed shell32.dll
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.
Result
Threat name:
AgentTesla, GuLoader
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Signature
Hides that the sample has been downloaded from the Internet (zone.identifier)
Mass process execution to delay analysis
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)
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:
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 706867 Sample: pRBYWqqnjG.exe Startdate: 21/09/2022 Architecture: WINDOWS Score: 100 82 api.telegram.org 2->82 84 Snort IDS alert for network traffic 2->84 86 Multi AV Scanner detection for submitted file 2->86 88 Yara detected GuLoader 2->88 90 4 other signatures 2->90 9 pRBYWqqnjG.exe 1 33 2->9         started        13 newapp.exe 2->13         started        15 newapp.exe 2->15         started        signatures3 process4 file5 70 C:\Users\user\AppData\...\Relitigated.vis, COM 9->70 dropped 72 C:\Users\user\AppData\...\BtTray.Toolkit.dll, PE32+ 9->72 dropped 74 C:\Users\user\AppData\Roaming\...\Office.dll, PE32 9->74 dropped 76 2 other files (none is malicious) 9->76 dropped 100 Writes to foreign memory regions 9->100 102 Mass process execution to delay analysis 9->102 104 Tries to detect Any.run 9->104 17 CasPol.exe 9->17         started        22 powershell.exe 9->22         started        24 powershell.exe 9->24         started        30 126 other processes 9->30 26 conhost.exe 13->26         started        28 conhost.exe 15->28         started        signatures6 process7 dnsIp8 78 api.telegram.org 149.154.167.220, 443, 49757, 49758 TELEGRAMRU United Kingdom 17->78 80 85.31.46.80, 49755, 80 CLOUDCOMPUTINGDE Germany 17->80 68 C:\Users\user\AppData\Roaming\...\newapp.exe, PE32 17->68 dropped 92 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 17->92 94 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 17->94 96 Tries to steal Mail credentials (via file / registry access) 17->96 98 5 other signatures 17->98 32 conhost.exe 17->32         started        34 conhost.exe 22->34         started        36 conhost.exe 22->36         started        38 conhost.exe 24->38         started        46 2 other processes 24->46 40 conhost.exe 30->40         started        42 conhost.exe 30->42         started        44 conhost.exe 30->44         started        48 142 other processes 30->48 file9 signatures10 process11 process12 64 2 other processes 34->64 50 conhost.exe 38->50         started        52 conhost.exe 40->52         started        54 conhost.exe 42->54         started        56 conhost.exe 44->56         started        58 conhost.exe 48->58         started        60 conhost.exe 48->60         started        62 conhost.exe 48->62         started        66 15 other processes 48->66
Threat name:
Win32.Trojan.GuLoader
Status:
Malicious
First seen:
2022-09-20 05:59:46 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
18 of 26 (69.23%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  7/10
Tags:
n/a
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Loads dropped DLL
Unpacked files
SH256 hash:
8bdd996ae4778c6f829e2bcb651c55efc9ec37eeea17d259e013b39528dddbb6
MD5 hash:
3d366250fcf8b755fce575c75f8c79e4
SHA1 hash:
2ebac7df78154738d41aac8e27d7a0e482845c57
SH256 hash:
9fae3524cf580259336f307bc46247580917ba44883ff33b0411638b175d4ca3
MD5 hash:
b8f12651b202ba487210d3c244550044
SHA1 hash:
ede544c504f8049bd106e48a9a5472257f0b6704
SH256 hash:
65dafcd834b02f68a1fa3ae3f8a80c42899466e54d0530492918c6c45a5c7f6f
MD5 hash:
08136819c94d6859a0712afa022761c3
SHA1 hash:
97c80b087bf6da0bc0ce1ada96d3d5285a335703
SH256 hash:
bb7e367bee3e91651d444db3c2f0997de914650547c66473bb201a2724d49196
MD5 hash:
6ea4aa54a7837e790c0b822dc8c27cd6
SHA1 hash:
1ed173163c496c482b36ef737fb6832e2b82cb6e
SH256 hash:
64838dfcbbe16affd2aefc5de3448644669df0a2a8d11065670b1a2f51f4da9c
MD5 hash:
a2b16784244bc0a74e15fbd1a6c990a5
SHA1 hash:
a4e3bbc189eddd85f4c59f5a394ed7659bec6363
Please note that we are no longer able to provide a coverage score for Virus Total.

File information


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

Web download

GuLoader

Executable exe 64838dfcbbe16affd2aefc5de3448644669df0a2a8d11065670b1a2f51f4da9c

(this sample)

  
Delivery method
Distributed via web download

Comments



Avatar
zbet commented on 2022-09-21 06:16:51 UTC

url : hxxp://192.3.173.102/JJT.exe