MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25
SHA3-384 hash: 01ea47e3572ef9f3b48aadaafb237e5f44cc76789d5c8a8d98fe348a1db792cd61ba08adb63b88559b923279868abc5e
SHA1 hash: 7f9dbd0c34c79ab3269647449784604fbd0989a9
MD5 hash: 9e393d55b3ed24f55cd6b5d93d31690b
humanhash: pizza-gee-spring-nebraska
File name:POP3.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:817'472 bytes
First seen:2024-04-04 16:17:12 UTC
Last seen:2024-04-04 17:37:22 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash ced282d9b261d1462772017fe2f6972b (127 x Formbook, 113 x GuLoader, 70 x RemcosRAT)
ssdeep 12288:0sJvmJFUAQGEj67//rKG7vhrd7RcLu/CnC74gpu74EYYXUxH:HJvmrU7jjOrKG7v9cqCC74gpu74XLH
TLSH T16B05BE166E9CC8EEC92DB1F2DA27C0740D246DA988A0474F66747A8474B2BD7DD0F83D
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 b60b31614d7d3317 (1 x GuLoader)
Reporter malwarelabnet
Tags:exe GuLoader signed

Code Signing Certificate

Organisation:Rigsrevisoren
Issuer:Rigsrevisoren
Algorithm:sha256WithRSAEncryption
Valid from:2023-11-10T11:01:49Z
Valid to:2026-11-09T11:01:49Z
Serial number: 15383cf22f4b81305e064e8f2701bf51a16b3e5b
Thumbprint Algorithm:SHA256
Thumbprint: 8f4b13174568ea9203c267bfab8b722cf6264fce25d5c0ae1468b245e2df182d
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
309
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
agenttesla
Create hunting rule
ID:
1
File name:
389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25.exe
Verdict:
Malicious activity
Analysis date:
2024-04-04 16:19:05 UTC
Tags:
evasion stealer agenttesla
Link:
https://app.any.run/tasks/5315f30d-c83e-460a-b014-a2fba113d8ba

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

Behaviour
Creating a window
Creating a file in the Windows 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
Running batch commands
Using the Windows Management Instrumentation requests
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
installer lolbin overlay packed shell32
Link:
https://www.filescan.io/uploads/660ed2bd391c61c479157ce6/reports/600c5825-4cf4-4bc3-bfab-b5a09e33f357/overview
Verdict:
Malicious
Labled as:
Malware
Link:
https://www.hybrid-analysis.com/sample/389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25
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/3bc0fe18-806f-4469-b20d-4fecf768f004
Result
Threat name:
AgentTesla, GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1420331
Signature
Antivirus detection for URL or domain
Check if machine is in data center or colocation facility
Contains functionality to register a low level keyboard hook
Found malware configuration
Installs a global keyboard hook
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)
Queries sensitive video device information (via WMI, Win32_VideoController, often done to detect virtual machines)
Sigma detected: Suspicious Script Execution From Temp Folder
Snort IDS alert for network traffic
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: 1420331 Sample: POP3.exe Startdate: 04/04/2024 Architecture: WINDOWS Score: 100 36 www.lifeartfertility.co.za 2->36 38 mail.liyemacp.co.za 2->38 40 3 other IPs or domains 2->40 50 Snort IDS alert for network traffic 2->50 52 Found malware configuration 2->52 54 Antivirus detection for URL or domain 2->54 56 9 other signatures 2->56 8 POP3.exe 2 37 2->8         started        signatures3 process4 file5 24 C:\Users\user\AppData\Local\...\nsExec.dll, PE32 8->24 dropped 26 C:\Users\user\AppData\...\Proadoption.Pla, ASCII 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\Local\Temp\...\POP3.exe, PE32 12->28 dropped 60 Obfuscated command line found 12->60 62 Writes to foreign memory regions 12->62 64 Powershell drops PE file 12->64 16 wab.exe 15 8 12->16         started        20 conhost.exe 12->20         started        22 cmd.exe 1 12->22         started        signatures9 process10 dnsIp11 30 mail.liyemacp.co.za 197.221.63.184, 49724, 49726, 587 xneeloZA South Africa 16->30 32 ip-api.com 208.95.112.1, 49723, 80 TUT-ASUS United States 16->32 34 2 other IPs or domains 16->34 42 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->42 44 Tries to steal Mail credentials (via file / registry access) 16->44 46 Tries to harvest and steal browser information (history, passwords, etc) 16->46 48 Installs a global keyboard hook 16->48 signatures12
Score:
100%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25/
Threat name:
Win32.Trojan.GuLoader
Create hunting rule
Status:
Malicious
First seen:
2024-04-04 09:03:18 UTC
File Type:
PE (Exe)
Extracted files:
8
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hco66u3izrkfsjxtmszybmlfatxoq4p6ccgoslslmuardaustqsq._file
Verdict:
unknown
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla keylogger persistence spyware stealer trojan
Link:
https://tria.ge/reports/240404-trx78ach68/
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 Windows directory
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Looks up external IP address via web service
Loads dropped DLL
AgentTesla
Unpacked files
SH256 hash:
3aa8e0abadefea2de58281198acfe48713a1d5b43aea5619f563cea098e9fd34
MD5 hash:
ac0f93b2dec82e9579bff14c8572a6c8
SHA1 hash:
6460244317cbb77e342adb3561ec3acb496c84d5
Link:
https://www.unpac.me/results/1d00cf4f-7035-4897-8c8f-62573a74a044/
SH256 hash:
2147239537943fb576a69fd9e554492e3dc4dee58ac8e3a857bf347e803c653c
MD5 hash:
e3a1c9820a922ae5e958e3eb3ff5573f
SHA1 hash:
4a347add83f6fd46f485a02f392c71c999cc311e
Link:
https://www.unpac.me/results/1d00cf4f-7035-4897-8c8f-62573a74a044/
SH256 hash:
946162f71bc2035ec0e7209c6d93232835195849f884292431cc28882f650aa9
MD5 hash:
89a1d38c8ccc09e36c08fee8058c536a
SHA1 hash:
3bc7605f86f61bd37c675cba0445d34f35130ff0
Link:
https://www.unpac.me/results/1d00cf4f-7035-4897-8c8f-62573a74a044/
SH256 hash:
389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25
MD5 hash:
9e393d55b3ed24f55cd6b5d93d31690b
SHA1 hash:
7f9dbd0c34c79ab3269647449784604fbd0989a9
Link:
https://www.unpac.me/results/1d00cf4f-7035-4897-8c8f-62573a74a044/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/389def5368cc/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/389def5368cc545926f364b380b16504eee871fe108ce92e4b65011182929c25

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:Ins_NSIS_Buer_Nov_2020_1
Create hunting rule
Author:Arkbird_SOLG
Description:Detect NSIS installer used for Buer loader
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
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::ShellExecuteExA
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::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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