MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b. 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: 13


Intelligence 13 IOCs YARA File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b
SHA3-384 hash: 19c2f006b5bb17445bf8aab4b719e04e0a642625e4dedd3625977a05e44569bba500c0a63d13748ffba268d36d738cc8
SHA1 hash: ed423ed2498dcb2d26321dfa4c847fe6a86f518f
MD5 hash: 6049344c3de2f94c14538b6c13c4f89f
humanhash: violet-montana-harry-seven
File name:JOU24013126.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:505'463 bytes
First seen:2024-03-20 07:11:08 UTC
Last seen:2024-03-20 08:27:51 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (525 x GuLoader, 110 x RemcosRAT, 80 x EpsilonStealer)
ssdeep 12288:bVY9YvdIWVYsrGTMeBtFOuhloWmkiA4+Z39/8u:be9YvdSsC4ItFZhqq6u
Threatray 50 similar samples on MalwareBazaar
TLSH T122B412007B52D2FBE02807755C1786795BF8ED515AA0679B33ED3BBDD8322818A0FB94
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 00cce4fccce4fc04 (4 x GuLoader, 1 x AgentTesla)
Reporter abuse_ch
Tags:exe GuLoader

Intelligence

File Origin
# of uploads :
2
# of downloads :
335
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b.exe
Verdict:
Malicious activity
Analysis date:
2024-03-20 07:46:37 UTC
Tags:
stealer agenttesla
Link:
https://app.any.run/tasks/f30c54a0-ef9d-4f83-b33d-6023dbb9e21c

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Trojan.Siggen8.40546.2143.UNOFFICIAL
Create hunting rule

Result
Verdict:
Suspicious
Maliciousness:

Behaviour
Creating a window
Creating a file in the %AppData% subdirectories
Creating a file in the Windows subdirectories
Launching a process
Running batch commands
Using the Windows Management Instrumentation requests
Moving a file to the Program Files subdirectory
Replacing files
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/65fa8c4487137159d44afc04/reports/47dba456-a824-417d-a136-f882dc503658/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b
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/9e519cc3-61e6-4fb6-9192-92e2f84218de
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1412189
Signature
Found malware configuration
Installs a global keyboard hook
Machine Learning detection for sample
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)
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
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1412189 Sample: JOU24013126.exe Startdate: 20/03/2024 Architecture: WINDOWS Score: 100 25 smtp.gmail.com 2->25 27 apwisulsel.sa.com 2->27 29 api.ipify.org 2->29 45 Found malware configuration 2->45 47 Multi AV Scanner detection for submitted file 2->47 49 Yara detected AgentTesla 2->49 51 2 other signatures 2->51 8 JOU24013126.exe 2 18 2->8         started        signatures3 process4 file5 23 C:\Users\user\AppData\...\Scrawliness.Non, ASCII 8->23 dropped 53 Suspicious powershell command line found 8->53 12 powershell.exe 18 8->12         started        signatures6 process7 signatures8 55 Obfuscated command line found 12->55 57 Writes to foreign memory regions 12->57 15 wab.exe 15 8 12->15         started        19 conhost.exe 12->19         started        21 cmd.exe 1 12->21         started        process9 dnsIp10 31 apwisulsel.sa.com 104.128.228.214, 443, 49717 HOSTUS-GLOBAL-ASHostUSHK United States 15->31 33 smtp.gmail.com 142.251.16.108, 49719, 49720, 49722 GOOGLEUS United States 15->33 35 api.ipify.org 172.67.74.152, 443, 49718 CLOUDFLARENETUS United States 15->35 37 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 15->37 39 Tries to steal Mail credentials (via file / registry access) 15->39 41 Tries to harvest and steal browser information (history, passwords, etc) 15->41 43 Installs a global keyboard hook 15->43 signatures11
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-03-20 02:00:49 UTC
File Type:
PE (Exe)
Extracted files:
4
AV detection:
13 of 23 (56.52%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=jsl3s25kny6b56ihjavl5baihsebhvcvixitr3c3ttcfn4acpynq._file
Verdict:
unknown
Similar samples:
3854783710a249c1b8d553d298623ec63cc957281d703af14cf778bf18c06a34
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496278998f3dbc4bd9cc37ee7e9628cc7a8372f55cb65c5f143b6723bec46096
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54a4891d6753b4acaa07bb6c01aebcb44a0140ffc05ccdc53785a74365969585
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5fd79e8094fb1ac9dbc167219bc3218cf07a5679edc11f7847c5cd0b2e756309
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9845e47adb818b782750715818bf6e47883961eaaf623db8c9554c03d371903c
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d68a5d440931df383de62e3436f5f485ecd75b552e8b78065706a8c880828378
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dfa384f6136c43639f6c66766ca81c245e65a70fcf92015656b1cd7a579a3647
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e156c4e8e53c6b93166fea54fb521d9eb8bc74143ad52697a28809f5639205cf
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f27ddc5f225f50a392bfcf9cbd59557d445f5ad47f1ad31f1a899aec1ec92611
GuLoader
+ 40 additional samples on MalwareBazaar
Result
Malware family:
guloader
Create hunting rule
Score:
  10/10
Tags:
family:guloader downloader persistence
Link:
https://tria.ge/reports/240320-h1hncabd36/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Drops file in Windows directory
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Guloader,Cloudeye
Unpacked files
SH256 hash:
4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b
MD5 hash:
6049344c3de2f94c14538b6c13c4f89f
SHA1 hash:
ed423ed2498dcb2d26321dfa4c847fe6a86f518f
Link:
https://www.unpac.me/results/53dd35d3-e39c-488b-82ab-835ca28d58d0/
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/4c97b96baa6e3c1ef907482abe84083c8813d45545d138ec5b9cc456f0027e1b

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_AUTHENTICODEMissing Authenticodehigh
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
ADVAPI32.dll::SetFileSecurityW
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::MoveFileExW
KERNEL32.dll::MoveFileW
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

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