MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40. 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 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40
SHA3-384 hash: c23a790aa9edf0d94ce4c03ddf4f8d7e29497eabf889e372b646f25b1b05af57a450ed5d65d3c880d1cb8889a49b6fd7
SHA1 hash: a4c0509eed3bee9d3f1fe51aa09ab365e36536b8
MD5 hash: e7d86866fe67e21262307926deaf9da9
humanhash: early-eleven-twenty-carpet
File name:Ziraat Bankasi Swift Mesaji.pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:732'872 bytes
First seen:2024-02-15 06:55:56 UTC
Last seen:2024-02-19 08:42:29 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash e2a592076b17ef8bfb48b7e03965a3fc (385 x GuLoader, 58 x RemcosRAT, 40 x AgentTesla)
ssdeep 12288:ucgyWb9V+azG4AQtjgOJYyxifyvYMaQyLi6R/LohEdIxL33vfXC:uSWbL+eyqiqvYML3eU33Hy
TLSH T134F412256B58D907FB82017480A1F3BD9B34EEAC2A1BCF53AAF93C9F3629B556C14105
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) (4504/4/1)
File icon (PE):PE icon
dhash icon f8dcd8dceceeecc0 (6 x GuLoader)
Reporter abuse_ch
Tags:exe geo GuLoader signed TUR ZiraatBank

Code Signing Certificate

Organisation:Detenebrate
Issuer:Detenebrate
Algorithm:sha256WithRSAEncryption
Valid from:2023-12-25T01:06:11Z
Valid to:2026-12-24T01:06:11Z
Serial number: 38241bb34d7609d889a94b7bc9900acba2e20020
Thumbprint Algorithm:SHA256
Thumbprint: 70a7f014239dc06c7461eb0d4c697eb60396252b48b6bdb7ea1d2fea7614f4d0
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
4
# of downloads :
357
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40.exe
Verdict:
Malicious activity
Analysis date:
2024-02-15 06:56:48 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/9e902dd8-1aa0-4e65-9631-866c9ad7e961

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/476266/
Detection(s):
SecuriteInfo.com.FileRepMalware.32342.12101.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the %temp% subdirectories
Searching for the window
Searching for the Windows task manager window
Launching a process
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Creating a file
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
guloader installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/65cdb588bef28d0c6fb93565/reports/162800ba-73df-43f6-8caf-e615454cab59/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40
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/0c1c49a6-f8f2-41a0-a731-8fc1a50f0941
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1392616
Signature
Antivirus detection for URL or domain
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Initial sample is a PE file and has a suspicious name
Installs a global keyboard hook
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Powershell drops PE file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Sigma detected: Suspicious Double Extension File Execution
Suspicious powershell command line found
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)
Uses an obfuscated file name to hide its real file extension (double extension)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1392616 Sample: Ziraat Bankasi Swift Mesaji... Startdate: 15/02/2024 Architecture: WINDOWS Score: 100 36 smtp.gmail.com 2->36 38 excelbuilding.co.uk 2->38 40 api.ipify.org 2->40 50 Multi AV Scanner detection for domain / URL 2->50 52 Found malware configuration 2->52 54 Antivirus detection for URL or domain 2->54 56 7 other signatures 2->56 8 Ziraat Bankasi Swift Mesaji.pdf.exe 35 2->8         started        signatures3 process4 file5 22 C:\Users\user\AppData\Roaming\...\tmrer.tre, Apollo 8->22 dropped 24 C:\Users\user\...\Inddatafunktions.Ban, ASCII 8->24 dropped 26 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->26 dropped 58 Suspicious powershell command line found 8->58 12 powershell.exe 18 8->12         started        signatures6 process7 file8 28 C:\Users\user\AppData\...\Musikafgifter.exe, PE32 12->28 dropped 60 Writes to foreign memory regions 12->60 62 Found suspicious powershell code related to unpacking or dynamic code loading 12->62 64 Powershell drops PE file 12->64 16 Musikafgifter.exe 15 8 12->16         started        20 conhost.exe 12->20         started        signatures9 process10 dnsIp11 30 smtp.gmail.com 142.250.105.108, 49713, 49714, 587 GOOGLEUS United States 16->30 32 172.217.215.108, 49715, 587 GOOGLEUS United States 16->32 34 2 other IPs or domains 16->34 42 Multi AV Scanner detection for dropped file 16->42 44 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->44 46 Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines) 16->46 48 3 other signatures 16->48 signatures12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-02-15 01:40:48 UTC
File Type:
PE (Exe)
Extracted files:
9
AV detection:
15 of 24 (62.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=uy2ludi4mle2j32yb4qgdjwivjoa2qf5y37sywxfwsryaitjlnaa._file
Verdict:
unknown
Result
Malware family:
n/a
Score:
  8/10
Tags:
persistence
Link:
https://tria.ge/reports/240215-hqcdksbc8w/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Windows directory
Loads dropped DLL
Unpacked files
SH256 hash:
c4c6fe032f3cd8b31528d7b99661f85ee22cb78746aee98ec568431d4f5043f7
MD5 hash:
b55f7f1b17c39018910c23108f929082
SHA1 hash:
1601f1cc0d0d6bcf35799b7cd15550cd01556172
Link:
https://www.unpac.me/results/d4ae93d6-28a3-4336-9de5-b40c84043776/
SH256 hash:
e69ee897084fcdaf301b710386853fe867c9ed036222be44ba7b5a080e828ffb
MD5 hash:
1a6d0cfb6b904c4bf63491728ce9cf06
SHA1 hash:
ad29426b4888c0f23b758d42320e1ad6cd731133
Link:
https://www.unpac.me/results/d4ae93d6-28a3-4336-9de5-b40c84043776/
SH256 hash:
a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40
MD5 hash:
e7d86866fe67e21262307926deaf9da9
SHA1 hash:
a4c0509eed3bee9d3f1fe51aa09ab365e36536b8
Link:
https://www.unpac.me/results/d4ae93d6-28a3-4336-9de5-b40c84043776/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/a634ba0d1c62/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/a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40

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 a634ba0d1c62c9a4ef580f2061a6c8aa5c0d40bdc6ff2c5ae5b4a38022695b40

(this sample)

  
Delivery method
Distributed via e-mail attachment
Cape
Cape
https://www.capesandbox.com/analysis/476266/

Comments