MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38. 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: 14


Intelligence 14 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38
SHA3-384 hash: 276578bb2ced24290a8f8ad33bdba92e406b2735e3a691487e9f18ef3996243e6acdf1eb2bebc080a660bad109b596e6
SHA1 hash: 6122888a3a40d43e9d7299004f33b5f2366d32e7
MD5 hash: 775f9d7a8a8868e261740f820097879f
humanhash: avocado-fifteen-yankee-beer
File name:RFQ Commercial Doc_935750101.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:650'352 bytes
First seen:2024-04-03 13:34:43 UTC
Last seen:2024-04-03 14:34:13 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f4639a0b3116c2cfc71144b88a929cfd (98 x GuLoader, 53 x Formbook, 39 x VIPKeylogger)
ssdeep 12288:yXRAvufNFTr7LYzGwu13luASEncyaAI9wHhf8/qOruhxqwDwmuu6TNxFu+M:yXRyUNJr7LYzGN94wJSXExPqu6hxFu9
TLSH T15BD4DF8BA394F4A7E5717FB0EAF2C1F13B503C68D418224F63543EC93E729A18AB5119
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:exe GuLoader Lokibot signed

Code Signing Certificate

Organisation:hemateins
Issuer:hemateins
Algorithm:sha256WithRSAEncryption
Valid from:2023-07-11T05:20:16Z
Valid to:2026-07-10T05:20:16Z
Serial number: 451ca156f5b73250b5463c892a43a143f58f5d2a
Thumbprint Algorithm:SHA256
Thumbprint: fa9d5ffed9763bcb967a6a680e6786e0dc9ef9bc511ecff1eec2b20ab4beb710
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
349
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38.exe
Verdict:
Malicious activity
Analysis date:
2024-04-03 14:46:52 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/5359aea0-298f-408a-8635-a3744ada714a

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

Behaviour
Searching for the window
Creating a window
Creating a file
Launching a process
Changing a file
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/660d5b0eeda31927461b23c4/reports/51fe8d8c-54cf-4579-b512-ed52bab3eb03/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38
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/e341a4bb-2f34-4f2c-ac8f-d00186e2c966
Result
Threat name:
GuLoader, Lokibot
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1419480
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Hides threads from debuggers
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Obfuscated command line found
Powershell drops PE file
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 ftp login credentials
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 GuLoader
Yara detected Lokibot
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1419480 Sample: RFQ Commercial Doc_935750101.exe Startdate: 03/04/2024 Architecture: WINDOWS Score: 100 36 ebnsina.top 2->36 38 drive.usercontent.google.com 2->38 40 drive.google.com 2->40 50 Snort IDS alert for network traffic 2->50 52 Multi AV Scanner detection for domain / URL 2->52 54 Antivirus detection for URL or domain 2->54 56 8 other signatures 2->56 8 RFQ Commercial Doc_935750101.exe 3 37 2->8         started        signatures3 process4 file5 26 C:\Users\user\AppData\Local\...\rias.spr, ASCII 8->26 dropped 58 Suspicious powershell command line found 8->58 12 powershell.exe 20 8->12         started        signatures6 process7 file8 28 C:\Users\...\RFQ Commercial Doc_935750101.exe, PE32 12->28 dropped 60 Obfuscated command line found 12->60 62 Writes to foreign memory regions 12->62 64 Hides threads from debuggers 12->64 66 Powershell drops PE file 12->66 16 wab.exe 86 12->16         started        20 WMIADAP.exe 4 12->20         started        22 conhost.exe 12->22         started        24 cmd.exe 1 12->24         started        signatures9 process10 dnsIp11 30 ebnsina.top 104.21.13.124, 49715, 49716, 49717 CLOUDFLARENETUS United States 16->30 32 drive.usercontent.google.com 142.250.189.129, 443, 49714 GOOGLEUS United States 16->32 34 drive.google.com 172.217.2.206, 443, 49713 GOOGLEUS United States 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 ftp login credentials 16->46 48 2 other signatures 16->48 signatures12
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Malicious
First seen:
2024-04-02 15:22:18 UTC
File Type:
PE (Exe)
Extracted files:
6
AV detection:
17 of 24 (70.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=fjmx56zsbkrwepitgqaxvmmodx4knus24vcv3vzv5yqaokcexm4a._file
Verdict:
malicious
Result
Malware family:
lokibot
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:lokibot collection downloader persistence spyware stealer trojan
Link:
https://tria.ge/reports/240403-qvn7yadh2y/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
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
Drops file in System32 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
Guloader,Cloudeye
Lokibot
Unpacked files
SH256 hash:
2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38
MD5 hash:
775f9d7a8a8868e261740f820097879f
SHA1 hash:
6122888a3a40d43e9d7299004f33b5f2366d32e7
Link:
https://www.unpac.me/results/5fcb528c-cb12-49ac-a366-7fb0542474d8/
Malware family:
Lokibot
Create hunting rule
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/2a597efb320a/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/2a597efb320aa3623d1334017ab18e1df8a6d25ae5455dd735ee20072844bb38

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