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MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea. 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: 10


Intelligence 10 IOCs YARA 1 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea
SHA3-384 hash: 07fa6134cc4ce11d5675adc69510a36c2470bc07788d58ce235378debf9b90726e1985e5816097f674afd5ab52b0b10c
SHA1 hash: 9833559bcda07e6976364672f6b7c8bcef84571f
MD5 hash: 341dab4037e9eff3fa0f34fb8382f30c
humanhash: sodium-nine-five-august
File name:payment advice_pdf.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:564'552 bytes
First seen:2024-03-11 19:52:14 UTC
Last seen:2024-03-11 21:27:01 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash b34f154ec913d2d2c435cbd644e91687 (592 x GuLoader, 130 x RemcosRAT, 84 x EpsilonStealer)
ssdeep 6144:ImOP0pJkkuNjE241F13gyLWoz6XVasKvGSz7tvIPykUn5CRFaPyCoUtU7Hi8R55i:pkNE2cL3rKou+vGEZvx5CD1W4i83bWL
TLSH T1C6C40222773EB1A2D82186321B0EC9665F703CE614A24A4F3621BF6E7C31F61D529F59
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 70fcf2fef6d868f1 (2 x AgentTesla, 2 x GuLoader)
Reporter malwarelabnet
Tags:exe GuLoader Lokibot signed

Code Signing Certificate

Organisation:Telenergy
Issuer:Telenergy
Algorithm:sha256WithRSAEncryption
Valid from:2023-05-13T05:58:46Z
Valid to:2026-05-12T05:58:46Z
Serial number: 30ac1800b050a250145629a47af846ade616970a
Thumbprint Algorithm:SHA256
Thumbprint: 4f0e19ab6c3066f8d8eb3332bda1181b9edaa667b10cf394ab0b8d3bac3f0e00
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform

Intelligence

File Origin
# of uploads :
2
# of downloads :
461
Origin country :
CA CA
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Payment advice.pdf.arj
Verdict:
Suspicious activity
Analysis date:
2024-03-08 09:13:16 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/fc5fa92f-f663-4571-a2a7-677eeed691eb

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/478661/
Detection(s):
SecuriteInfo.com.FileRepMalware.22796.783.UNOFFICIAL
Create hunting rule

Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Сreating synchronization primitives
Creating a file
Creating a window
Creating a file in the %temp% directory
Delayed reading of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin masquerade overlay packed shell32
Link:
https://www.filescan.io/uploads/65ef612af074ad892e5221cc/reports/2c882df5-9b63-4df9-8050-10cb128b4d68/overview
Verdict:
Malicious
Labled as:
Trojan.Generic
Link:
https://www.hybrid-analysis.com/sample/665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea
Verdict:
Unknown
Link:
https://analyze.intezer.com/analyses/58b6b0c7-dc96-463b-b5ab-59624e60b445
Result
Threat name:
GuLoader
Create hunting rule
Detection:
malicious
Classification:
troj.evad.spyw
Score:
92 / 100
Link:
https://www.joesandbox.com/analysis/1407054
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for URL or domain
Initial sample is a PE file and has a suspicious name
Multi AV Scanner detection for submitted file
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
Score:
99%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea/
Threat name:
Win32.Trojan.Generic
Create hunting rule
Status:
Malicious
First seen:
2024-03-07 22:08:06 UTC
File Type:
PE (Exe)
Extracted files:
7
AV detection:
15 of 24 (62.50%)
Threat level:
  2/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=mzny32qbmq6m4v34zdggzqlhpz4mx5cvtn6a7piei3pomwlqwtva._file
Result
Malware family:
lokibot
Create hunting rule
Score:
  10/10
Tags:
family:guloader family:lokibot collection downloader spyware stealer trojan
Link:
https://tria.ge/reports/240311-ylyzsaef99/
Behaviour
Suspicious behavior: MapViewOfSection
Suspicious behavior: RenamesItself
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
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Accesses Microsoft Outlook profiles
Legitimate hosting services abused for malware hosting/C2
Loads dropped DLL
Reads user/profile data of web browsers
Guloader,Cloudeye
Lokibot
Unpacked files
SH256 hash:
c2f405d7402f815d0c3fadd9a50f0bbbb1bab9aa38fe347823478a2587299448
MD5 hash:
9625d5b1754bc4ff29281d415d27a0fd
SHA1 hash:
80e85afc5cccd4c0a3775edbb90595a1a59f5ce0
Link:
https://www.unpac.me/results/0cee03c0-a3da-47d5-8a8a-f544ccf23747/
SH256 hash:
665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea
MD5 hash:
341dab4037e9eff3fa0f34fb8382f30c
SHA1 hash:
9833559bcda07e6976364672f6b7c8bcef84571f
Link:
https://www.unpac.me/results/0cee03c0-a3da-47d5-8a8a-f544ccf23747/
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.58
Link:
https://yomi.yoroi.company/submissions/665b8dea01643cce577cc8cc6cc1677e78cbf4559b7c0fbd0446dee65970b4ea

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

File information

The table below shows additional information about this malware sample such as delivery method and external references.

Cape
Cape
https://www.capesandbox.com/analysis/478661/

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
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

Comments