MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27. 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: 16


Intelligence 16 IOCs YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27
SHA3-384 hash: 212bf776422ebfa510228927ba3ae1d83ac371c07063b940d28a8148951e517d7eb91ffea81e25d92e344abb9bef842d
SHA1 hash: 29f816a15f65faf9503c240745095b4751376165
MD5 hash: a78ead5466dbdfafecbe695eeee1a140
humanhash: zebra-march-magnesium-shade
File name:Revised PI_2024.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:801'320 bytes
First seen:2024-07-04 05:58:02 UTC
Last seen:2024-07-08 13:51:36 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 076b06e6a65c9b7cca5a61be0cd82165 (51 x GuLoader, 4 x AgentTesla, 4 x Formbook)
ssdeep 12288:vavtjS+xIyB6BAwt8pjs0p8vxM/r9RKGqHmIdD+m:ivjxIhrt2Y0GMz9RKHHF9H
Threatray 629 similar samples on MalwareBazaar
TLSH T16C05D7B12531C0CAF9AA0DF1EF6E2461359332ACA4495B2D94D63F1C46CAFF1406EB5E
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 e09cb28ab2b68ed0 (7 x GuLoader, 1 x Loki, 1 x AgentTesla)
Reporter lowmal3
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Glisteningly
Issuer:Glisteningly
Algorithm:sha256WithRSAEncryption
Valid from:2024-02-07T02:45:21Z
Valid to:2027-02-06T02:45:21Z
Serial number: 39045071e7a82710379f0b00b250ef4c2bd0c44f
Thumbprint Algorithm:SHA256
Thumbprint: 4231ab78e67c2169ba31d98bcfc3df1e3707f4e138851206d1614a323068b99f
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
3
# of downloads :
448
Origin country :
DE DE
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27.exe
Verdict:
Malicious activity
Analysis date:
2024-07-04 06:01:24 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/69029b17-cd17-4194-a460-f303c8ca3ac9

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.28924.11648.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
90.2%
Link:
https://cyber-fortress.com/docs/result/index.php?id=66863a5094b35ad6fbebbbb9win10vpnfull_triage
Tags:
Encryption Execution Generic Network Static Injector
Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Сreating synchronization primitives
Creating a file
Searching for the window
Creating a file in the %temp% subdirectories
Delayed reading of the file
Searching for the Windows task manager window
Running batch commands
Creating a process with a hidden window
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/668639f0ce78046c1aae8f0d/reports/50953bbf-2a96-4fc0-aeae-23050f67cadf/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_90%
Link:
https://www.hybrid-analysis.com/sample/1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27
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/532684bf-f10e-4ed5-bc45-01448357b9af
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1467409
Signature
Antivirus / Scanner detection for submitted sample
Installs a global keyboard hook
Mass process execution to delay analysis
Multi AV Scanner detection for submitted file
Obfuscated command line found
Queries sensitive network adapter information (via WMI, Win32_NetworkAdapter, often done to detect virtual machines)
Switches to a custom stack to bypass stack traces
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
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1467409 Sample: Revised PI_2024.exe Startdate: 04/07/2024 Architecture: WINDOWS Score: 100 38 drive.usercontent.google.com 2->38 40 drive.google.com 2->40 42 api.ipify.org 2->42 50 Antivirus / Scanner detection for submitted sample 2->50 52 Multi AV Scanner detection for submitted file 2->52 54 Yara detected GuLoader 2->54 56 4 other signatures 2->56 8 Revised PI_2024.exe 4 35 2->8         started        signatures3 process4 file5 34 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->34 dropped 36 C:\Users\user\AppData\Local\...\System.dll, PE32 8->36 dropped 58 Obfuscated command line found 8->58 12 Revised PI_2024.exe 14 8 8->12         started        16 cmd.exe 8->16         started        18 cmd.exe 8->18         started        20 62 other processes 8->20 signatures6 process7 dnsIp8 44 drive.usercontent.google.com 172.217.1.97, 443, 60482 GOOGLEUS United States 12->44 46 drive.google.com 172.217.4.78, 443, 60481 GOOGLEUS United States 12->46 48 api.ipify.org 104.26.12.205, 443, 60483 CLOUDFLARENETUS United States 12->48 60 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 12->60 62 Tries to steal Mail credentials (via file / registry access) 12->62 64 Tries to harvest and steal ftp login credentials 12->64 66 2 other signatures 12->66 22 Conhost.exe 16->22         started        24 Conhost.exe 18->24         started        26 Conhost.exe 20->26         started        28 Conhost.exe 20->28         started        30 Conhost.exe 20->30         started        32 59 other processes 20->32 signatures9 process10
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-07-04 01:58:22 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
15 of 24 (62.50%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=d66k5dkkscbsofp7j77tsfa252fpzmwiucox7tqmwleifr43jmtq._file
Verdict:
malicious
Similar samples:
20386f6d4e80e1f8ab6b7b32ada778e092c30096cdffdeeaf9a120274855ace2
GuLoader
8a0874a8540772c03d595653af7bd80011589d4944705541c4c5a60c11f27b1a
GuLoader
95ee4ecd2ceea6e825a123d337708e9cdccdbd229943832894079f76b683b8d3
GuLoader
d05840831193582f5b1c4dafd24f629ef97b6d030bf52c2ff857b2488f9988f5
GuLoader
e15efe6abb3771d3bc76e8df6a9208035a5f741c5e8ea4381b48a1cf61d23e7d
GuLoader
e89b7fc9e69c109cebcb95fdcc42880fd35f4252170ec83a80aee860c366fc86
GuLoader
e913edbec8daeafe13813142950ea910369da04745480d394816f2dd40c7e59b
GuLoader
f854bd36800e1023b94344b4e349a6a3b725872f39cadb9e6dc62b739fcf6b23
GuLoader
fa71bbc6871f13271d6fae0f9a16dcb44961e7c9730baa8efb86999f06ea7105
GuLoader
fd087e17a8ade4ce303d86d6ebbf5b5fec4e8eae903ffea3787bb5384c1c3841
GuLoader
+ 619 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240704-gn6c7sxerm/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops file in Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Legitimate hosting services abused for malware hosting/C2
Looks up external IP address via web service
Loads dropped DLL
Reads WinSCP keys stored on the system
Reads data files stored by FTP clients
Reads user/profile data of local email clients
Reads user/profile data of web browsers
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/5d1d1822-be81-4ffa-94ba-157c783a7e0b
Unpacked files
SH256 hash:
1c2f19e57dc72587aa00800a498c5f581b7d6761dc13b24bcf287ea7bd5ca2bf
MD5 hash:
3eb4cd50dcb9f5981f5408578cb7fb70
SHA1 hash:
13b38cc104ba6ee22dc4dfa6e480e36587f4bc71
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/142c46d4-b72d-43d2-ab6d-16f7a720ffeb/
Parent samples :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 hash:
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce
MD5 hash:
4d3b19a81bd51f8ce44b93643a4e3a99
SHA1 hash:
35f8b00e85577b014080df98bd2c378351d9b3e9
Link:
https://www.unpac.me/results/142c46d4-b72d-43d2-ab6d-16f7a720ffeb/
SH256 hash:
ea60f14cbd764de7259f8f5a8f64093c8a4940c46a1a5153b6f42fe019a2297c
MD5 hash:
efec1affbb89c110ad32aa350437f5d7
SHA1 hash:
1dc7bf27ad34dc73813e27cbd63d5853fa196edf
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/142c46d4-b72d-43d2-ab6d-16f7a720ffeb/
Parent samples :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 hash:
dac2207ec9ca64e87c177a6f2ecec9df7a15d5cf3bb0235b99ce87b66ab89815
MD5 hash:
761fec069291b2f03a701f2d7e2d18d3
SHA1 hash:
579dfd17f750c39996a0199d049562a0b06ff4cd
Link:
https://www.unpac.me/results/142c46d4-b72d-43d2-ab6d-16f7a720ffeb/
SH256 hash:
1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27
MD5 hash:
a78ead5466dbdfafecbe695eeee1a140
SHA1 hash:
29f816a15f65faf9503c240745095b4751376165
Link:
https://www.unpac.me/results/142c46d4-b72d-43d2-ab6d-16f7a720ffeb/
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/1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27

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:Detect_SliverFox_String
Create hunting rule
Author:huoji
Description:Detect files is `SliverFox` malware
Rule name:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers
Rule name:PE_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 1fbcae8d4a90832715ff4fff39141aee8afcb2c8a09d7fce0cb2c882c79b4b27

(this sample)

  
Delivery method
Distributed via e-mail attachment

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
AUTH_APIManipulates User AuthorizationADVAPI32.dll::SetFileSecurityA
COM_BASE_APICan Download & Execute componentsole32.dll::CoCreateInstance
SECURITY_BASE_APIUses Security Base APIADVAPI32.dll::AdjustTokenPrivileges
SHELL_APIManipulates System ShellSHELL32.dll::ShellExecuteA
SHELL32.dll::SHFileOperationA
SHELL32.dll::SHGetFileInfoA
WIN32_PROCESS_APICan Create Process and ThreadsKERNEL32.dll::CreateProcessA
ADVAPI32.dll::OpenProcessToken
KERNEL32.dll::CloseHandle
KERNEL32.dll::CreateThread
WIN_BASE_APIUses Win Base APIKERNEL32.dll::LoadLibraryA
KERNEL32.dll::LoadLibraryExA
KERNEL32.dll::GetDiskFreeSpaceA
KERNEL32.dll::GetCommandLineA
WIN_BASE_IO_APICan Create FilesKERNEL32.dll::CopyFileA
KERNEL32.dll::CreateDirectoryA
KERNEL32.dll::CreateFileA
KERNEL32.dll::DeleteFileA
KERNEL32.dll::MoveFileExA
KERNEL32.dll::MoveFileA
WIN_BASE_USER_APIRetrieves Account InformationADVAPI32.dll::LookupPrivilegeValueA
WIN_REG_APICan Manipulate Windows RegistryADVAPI32.dll::RegCreateKeyExA
ADVAPI32.dll::RegDeleteKeyA
ADVAPI32.dll::RegOpenKeyExA
ADVAPI32.dll::RegQueryValueExA
ADVAPI32.dll::RegSetValueExA
WIN_USER_APIPerforms GUI ActionsUSER32.dll::AppendMenuA
USER32.dll::EmptyClipboard
USER32.dll::FindWindowExA
USER32.dll::OpenClipboard
USER32.dll::PeekMessageA
USER32.dll::CreateWindowExA

Comments