MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b. 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: 15


Intelligence 15 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b
SHA3-384 hash: c35ac452027c562cd20dacf5b70af8d709568199fd28155bb074eefda2bcfe19321447b31ce91a99bb1dd9a1abc3a446
SHA1 hash: 3c1a1fa66cd9890c8e0021853d39ab7b3aefc5c7
MD5 hash: 7971d20d1b569b51e56f37fc734a1c81
humanhash: fillet-bravo-angel-virginia
File name:RFQ Technical Doc_935750101.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:668'376 bytes
First seen:2024-04-03 13:34:37 UTC
Last seen:2024-04-03 14:34:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (98 x GuLoader, 53 x Formbook, 39 x VIPKeylogger)
ssdeep 12288:nXRAvufNFTr7L/R90rJ2RPBY+K9Yc65vpNpqwDwmuu6TNxFu+i:nXRyUNJr7L30N2RJXKz65vprPqu6hxF+
TLSH T111E4E09BA384F57BE4767F70DAE2C5F03B602C2DD418224F62547DD83EB28A18AB511D
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 803cfc829ef0c084 (3 x GuLoader, 1 x Loki)
Reporter malwarelabnet
Tags:AgentTesla exe GuLoader signed

Code Signing Certificate

Organisation:Pleasureful
Issuer:Pleasureful
Algorithm:sha256WithRSAEncryption
Valid from:2023-10-17T06:03:03Z
Valid to:2026-10-16T06:03:03Z
Serial number: 5f7185753b1e77058bf37d4d5d268deada5a8506
Thumbprint Algorithm:SHA256
Thumbprint: dddcebf18cf003aa9b2991ec6a3e4a4b532af3de33e12fd63e51b8a89ea26415
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
330
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b.exe
Verdict:
Malicious activity
Analysis date:
2024-04-03 14:47:52 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/6ebcd9e9-fa30-4c50-9f4d-93c7397f1592

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

Behaviour
Creating a window
Creating a file
Searching for the window
Launching a process
Running batch commands
Using the Windows Management Instrumentation requests
Moving a file to the Program Files subdirectory
Replacing files
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/660d5b0dbb285b5db055f9cd/reports/99769780-93ab-41e3-bd92-2c897564376d/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b
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:
Malicious
Link:
https://analyze.intezer.com/analyses/585d8642-8232-48e8-a6ad-5ff24948fc58
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419481
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Found malware configuration
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
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)
Writes to foreign memory regions
Yara detected AgentTesla
Yara detected GuLoader
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1419481 Sample: RFQ Technical Doc_935750101.exe Startdate: 03/04/2024 Architecture: WINDOWS Score: 100 34 drive.usercontent.google.com 2->34 36 drive.google.com 2->36 38 cp8nl.hyperhost.ua 2->38 46 Found malware configuration 2->46 48 Antivirus detection for URL or domain 2->48 50 Antivirus detection for dropped file 2->50 52 8 other signatures 2->52 8 RFQ Technical Doc_935750101.exe 3 34 2->8         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\Fridtjof.Bea, ASCII 8->24 dropped 54 Suspicious powershell command line found 8->54 12 powershell.exe 20 8->12         started        signatures6 process7 file8 26 C:\Users\...\RFQ Technical Doc_935750101.exe, PE32 12->26 dropped 56 Obfuscated command line found 12->56 58 Writes to foreign memory regions 12->58 60 Powershell drops PE file 12->60 16 wab.exe 8 12->16         started        20 conhost.exe 12->20         started        22 cmd.exe 1 12->22         started        signatures9 process10 dnsIp11 28 cp8nl.hyperhost.ua 185.174.175.187, 49731, 587 ITLDC-NLUA Ukraine 16->28 30 drive.usercontent.google.com 142.250.64.161, 443, 49728 GOOGLEUS United States 16->30 32 drive.google.com 142.250.64.238, 443, 49727 GOOGLEUS United States 16->32 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->40 42 Tries to steal Mail credentials (via file / registry access) 16->42 44 Tries to harvest and steal browser information (history, passwords, etc) 16->44 signatures12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-04-02 15:22:52 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
16 of 24 (66.67%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ge3wmppzabk3lqw5sl7zd3i2b3ogszo32uhygv4gipdspm3layfq._file
Verdict:
malicious
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla family:guloader downloader keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240403-qvnw6sec25/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Drops file in System32 directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
AgentTesla
Guloader,Cloudeye
Unpacked files
SH256 hash:
3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b
MD5 hash:
7971d20d1b569b51e56f37fc734a1c81
SHA1 hash:
3c1a1fa66cd9890c8e0021853d39ab7b3aefc5c7
Link:
https://www.unpac.me/results/e52a119d-8f02-4a57-b660-3cd3f817972c/
Malware family:
AgentTesla
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/3137663df900/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/3137663df90055b5c2dd92ff91ed1a0edc6965dbd50f83578643c727b36b060b

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.

BLint

The following table provides more information about this file using BLint. BLint is a Binary Linter to check the security properties, and capabilities in executables.

Findings
IDTitleSeverity
CHECK_DLL_CHARACTERISTICSMissing dll Security Characteristics (HIGH_ENTROPY_VA)high
Reviews
IDCapabilitiesEvidence
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteExW
SHELL32.dll::SHFileOperationW
SHELL32.dll::SHGetFileInfoW
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessW
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryExW
KERNEL32.dll::GetDiskFreeSpaceW
KERNEL32.dll::GetCommandLineW
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileW
KERNEL32.dll::CreateDirectoryW
KERNEL32.dll::CreateFileW
KERNEL32.dll::DeleteFileW
KERNEL32.dll::MoveFileW
KERNEL32.dll::MoveFileExW
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueW
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExW
ADVAPI32.dll::RegDeleteKeyW
ADVAPI32.dll::RegOpenKeyExW
ADVAPI32.dll::RegQueryValueExW
ADVAPI32.dll::RegSetValueExW
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuW
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExW
USER32.dll::OpenClipboard
USER32.dll::PeekMessageW
USER32.dll::CreateWindowExW

Comments