MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
SHA3-384 hash: e48fb27aac66290c6c2b2d4a4c259a18f2b4279e3ff05bb849496a5af684d1f583c4b60bb1acb243ec67bdf0b9643224
SHA1 hash: dac05f29b0aa9332ebe6f42dd33204d5353c8ea4
MD5 hash: da08a67fe7fff505184c2dc97a731d9c
humanhash: december-solar-oscar-blossom
File name:Orden de Compra.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:790'416 bytes
First seen:2024-07-14 06:37:18 UTC
Last seen:2024-07-24 14:25:27 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 076b06e6a65c9b7cca5a61be0cd82165 (51 x GuLoader, 4 x AgentTesla, 4 x Formbook)
ssdeep 12288:Oa0NyMIWM0Jt8pjs0p1vxM/r9RKGqHmIdD+D:F0I0Jt2Y0BMz9RKHHF9o
Threatray 2'736 similar samples on MalwareBazaar
TLSH T152F4C6B12531C0CAF9EA0DF1DF6E2461359332ACA4495B2DA4963F1C468AFF1406EB5F
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 cocaman
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Ansgninger
Issuer:Ansgninger
Algorithm:sha256WithRSAEncryption
Valid from:2024-06-21T00:24:00Z
Valid to:2027-06-21T00:24:00Z
Serial number: 2e5c5bc9cefd2a2ee51c37f89dbd956c7ca9f982
Thumbprint Algorithm:SHA256
Thumbprint: e8b3d4aebe40fe030946d6e9a400d8c3d6798983841168a49ae98d5bdecb26ec
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
386
Origin country :
CH CH
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62.exe
Verdict:
Malicious activity
Analysis date:
2024-07-14 06:40:38 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/a78c47d6-4275-4a32-9952-57c85a765afa

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.FileRepMalware.12502.26689.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
93.3%
Link:
https://cyber-fortress.com/docs/result/index.php?id=6693724bbcca3f923eb466eewin7simulatehigh_evasion
Tags:
Encryption Execution Network Static Stealth Injector
Result
Verdict:
Malware
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
Launching many processes
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
guloader installer lolbin microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/6693724cf739ad163685ef74/reports/c6fb351a-6adb-4b9c-abf7-a34b5edcab68/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
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/da661448-76b4-4945-96bf-b3619579a10f
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1472815
Signature
Antivirus / Scanner detection for submitted sample
Contains functionality to register a low level keyboard hook
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: 1472815 Sample: Orden de Compra.exe Startdate: 14/07/2024 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 5 other signatures 2->56 8 Orden de Compra.exe 4 42 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 Orden de Compra.exe 15 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 142.250.105.132, 443, 49789 GOOGLEUS United States 12->44 46 drive.google.com 74.125.136.100, 443, 49788 GOOGLEUS United States 12->46 48 api.ipify.org 104.26.12.205, 443, 49790 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:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-07-09 19:26:11 UTC
File Type:
PE (Exe)
Extracted files:
10
AV detection:
21 of 38 (55.26%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=kqrxfazlckbqznsv4ekhvwd3aeuz4xxdv5p3lzz3sltd5v77frra._file
Verdict:
malicious
Similar samples:
0cb6636748ff6a60ebf1a4644a7b4c877f8a19edd8c7a2eac10b34d1bd7cbfbf
GuLoader
199bd66bf9f7b299ebf9068feb2e8648404097e26f86cabc5462973769d24df5
GuLoader
1eda1b310543e616e8b7b97e8e5f13597fb3a67ed9658b3daba2f49361563689
GuLoader
482f10e5f1825368c6cdacf482febf39ed6d035ce866aded813d18890cf86dca
GuLoader
657a48043a872f3b614e4d7b335d71dea8b72c8292cb2cab1f2e67b2fc1b3c47
GuLoader
9ffd17a68654d3474794940762417fe1bc39a5ea87ce5877daa135ac783273e8
GuLoader
ea3c63e01dc18acb8940dbbe5bec6c3cdcb6c117b6a213b9e7e02c11caeabee0
GuLoader
ef66ea0bcee19ccd3d2771a170ff218a3e43b27f1b18f24e08685cb4d3fe053a
GuLoader
f2a42302b9c4f3e6c1e2e5d15dfa09cb41aad80ebc13678c4a412f77d4141ca0
GuLoader
+ 2'726 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla collection keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240714-hd2spsseme/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
outlook_office_path
outlook_win_path
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
Accesses Microsoft Outlook profiles
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:
Malicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/792eee96-17f4-4f14-8876-2f0d14374f5e
Unpacked files
SH256 hash:
1c2f19e57dc72587aa00800a498c5f581b7d6761dc13b24bcf287ea7bd5ca2bf
MD5 hash:
3eb4cd50dcb9f5981f5408578cb7fb70
SHA1 hash:
13b38cc104ba6ee22dc4dfa6e480e36587f4bc71
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/6b766d29-d90a-4a9c-a8a6-fcb6c2ea284d/
Parent samples :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 hash:
fda0018ab182ac6025d2fc9a2efcce3745d1da21ce5141859f8286cf319a52ce
MD5 hash:
4d3b19a81bd51f8ce44b93643a4e3a99
SHA1 hash:
35f8b00e85577b014080df98bd2c378351d9b3e9
Link:
https://www.unpac.me/results/6b766d29-d90a-4a9c-a8a6-fcb6c2ea284d/
SH256 hash:
ea60f14cbd764de7259f8f5a8f64093c8a4940c46a1a5153b6f42fe019a2297c
MD5 hash:
efec1affbb89c110ad32aa350437f5d7
SHA1 hash:
1dc7bf27ad34dc73813e27cbd63d5853fa196edf
Detections:
win_flawedammyy_auto
Create hunting rule
Link:
https://www.unpac.me/results/6b766d29-d90a-4a9c-a8a6-fcb6c2ea284d/
Parent samples :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 hash:
7765b7b362528e6e8c0f2d78147086d4640229a1d4fd04c220373e259f92ec0c
MD5 hash:
081859fc9b14e0d5976c5a2d152b4607
SHA1 hash:
4d52a678810cd1a28f3b51adc86541b02afd94fb
Link:
https://www.unpac.me/results/6b766d29-d90a-4a9c-a8a6-fcb6c2ea284d/
SH256 hash:
542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62
MD5 hash:
da08a67fe7fff505184c2dc97a731d9c
SHA1 hash:
dac05f29b0aa9332ebe6f42dd33204d5353c8ea4
Link:
https://www.unpac.me/results/6b766d29-d90a-4a9c-a8a6-fcb6c2ea284d/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
GuLoader
Score:
0.90
Link:
https://yomi.yoroi.company/submissions/542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62

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

rar 983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9

GuLoader

Executable exe 542372832b12830cb655e1147ad87b01299e5ee3af5fb5e73b92e63ed7ff2c62

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 983b12f644e45edc4d81850e16ce5627f63cddd55505376da5f1eb1180f3b5b9
  
Dropped by
MD5 dcaa092f297a059329b7a9360fc92157

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

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