MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c. 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: 12


Intelligence 12 IOCs YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c
SHA3-384 hash: 3ebff26f96939fd6d902e117714dda15a87632afc5dc61d68933723a41075ee82decff2afc023384fc39304b0b11ff7f
SHA1 hash: 67a33810ae059e722bbc5203fa644e5e550d5995
MD5 hash: 31ca0fd14af9b89c0aacd1a1c7dfd7e4
humanhash: july-tennessee-skylark-bacon
File name:KWOTASIE.exe
Download: download sample
Signature GuLoader
Create hunting rule
File size:895'168 bytes
First seen:2024-07-10 17:17:19 UTC
Last seen:2024-07-10 18:21:57 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash 671f2a1f8aee14d336bab98fea93d734 (182 x GuLoader, 4 x Formbook, 4 x RemcosRAT)
ssdeep 24576:L3WbOu88VY2nrnN/n3CaHouNH6K8Yx1Lp:L3Wyu8OY8rn5yaI6aRY/p
Threatray 750 similar samples on MalwareBazaar
TLSH T1281523693090D0E6F579157448B7AB658FB87FE634C28E466BA8364CAFB07C0780FD19
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)
Reporter NDA0E
Tags:AgentTesla exe geo GuLoader signed ZMB

Code Signing Certificate

Organisation:Afviseren
Issuer:Afviseren
Algorithm:sha256WithRSAEncryption
Valid from:2023-09-30T02:29:40Z
Valid to:2026-09-29T02:29:40Z
Serial number: 1cf5335d04c8af6047351d8bbb3f75347249e92b
Thumbprint Algorithm:SHA256
Thumbprint: fc1334341f2198c5c0a8b167bd2f72ed605a906c0f44c54cecac51804a292400
Source:This information was brought to you by ReversingLabs A1000 Malware Analysis Platform


Avatar
NDA0E
Makes DNS request to known GuLoader C2: zakk.co.za

Intelligence

File Origin
# of uploads :
2
# of downloads :
451
Origin country :
NL NL
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c.exe
Verdict:
Suspicious activity
Analysis date:
2024-07-10 17:19:33 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/4f76e707-66db-4607-99e6-d0cb031cf48b

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection(s):
SecuriteInfo.com.Win32.Evo-gen.19623.30564.UNOFFICIAL
Create hunting rule

Verdict:
Malicious
Score:
99.1%
Link:
https://cyber-fortress.com/docs/result/index.php?id=668ec24b6df1b20b8ec46e7ewin10vpnfull_triage
Tags:
Encryption Execution Network Static Stealth Heur
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
installer lolbin microsoft_visual_cc overlay packed shell32
Link:
https://www.filescan.io/uploads/668ec24b4c6b479391e44000/reports/abc4c5ab-1b26-419b-9540-1cc80e033867/overview
Verdict:
Unknown
Link:
https://www.hybrid-analysis.com/sample/86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c
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/f97decb1-a3f8-447b-ab8c-d640c4508791
Result
Threat name:
AgentTesla
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1470961
Signature
AI detected suspicious sample
Antivirus detection for URL or domain
Check if machine is in data center or colocation facility
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
Found malware configuration
Found suspicious powershell code related to unpacking or dynamic code loading
Hides threads from debuggers
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
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)
Suspicious powershell command line found
Switches to a custom stack to bypass stack traces
Tries to detect sandboxes and other dynamic analysis tools (process name or module or function)
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 AgentTesla
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 dnsIp2 2 Behavior Graph ID: 1470961 Sample: KWOTASIE.exe Startdate: 10/07/2024 Architecture: WINDOWS Score: 100 34 mail.lumies.co.za 2->34 36 ip-api.com 2->36 38 zakk.co.za 2->38 48 Found malware configuration 2->48 50 Antivirus detection for URL or domain 2->50 52 Multi AV Scanner detection for dropped file 2->52 54 8 other signatures 2->54 8 KWOTASIE.exe 28 2->8         started        signatures3 process4 file5 22 C:\Users\user\AppData\Local\...\femmers.For, ASCII 8->22 dropped 56 Suspicious powershell command line found 8->56 12 powershell.exe 20 8->12         started        signatures6 process7 file8 24 C:\Users\user\AppData\Local\...\KWOTASIE.exe, PE32 12->24 dropped 26 C:\Users\...\KWOTASIE.exe:Zone.Identifier, ASCII 12->26 dropped 58 Writes to foreign memory regions 12->58 60 Found suspicious powershell code related to unpacking or dynamic code loading 12->60 62 Hides threads from debuggers 12->62 64 Powershell drops PE file 12->64 16 wab.exe 15 8 12->16         started        20 conhost.exe 12->20         started        signatures9 process10 dnsIp11 28 mail.lumies.co.za 102.130.125.173, 587, 62306 xneeloZA South Africa 16->28 30 ip-api.com 208.95.112.1, 62305, 80 TUT-ASUS United States 16->30 32 zakk.co.za 102.218.215.35, 443, 62304 CKL1-ASNKE unknown 16->32 40 Tries to harvest and steal Putty / WinSCP information (sessions, passwords, etc) 16->40 42 Tries to steal Mail credentials (via file / registry access) 16->42 44 Tries to detect sandboxes and other dynamic analysis tools (process name or module or function) 16->44 46 3 other signatures 16->46 signatures12
Score:
98%
Verdict:
Malware
File Type:
PE
Link:
https://malprob.io/report/86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c/
Threat name:
Win32.Trojan.Guloader
Create hunting rule
Status:
Suspicious
First seen:
2024-07-10 08:44:42 UTC
File Type:
PE (Exe)
Extracted files:
12
AV detection:
13 of 37 (35.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=q3ilhsjhwyu7tc5xfpxlzxxivay56fjkniwo3mgwkjymemdjan6a._file
Verdict:
unknown
Similar samples:
086fd488622c16461d2c60ca3cd42a7d5147978f1624e51a04c7ceedcaa71c6c
GuLoader
0aa8854411a4425eb86658545788feb9f69529b80c29964b8c6d0ee5314ae860
GuLoader
1384a4567c1116f0a402f0f832427b18013b848e369fd642c4a5dcc763876a90
GuLoader
21773cea42a57dff11a05f01ea94f48fc457871b110a410e4ccb416a4e346229
GuLoader
3a262200a07c9f446ef95a399919a11960671591b90e56312c61b31c2a39dd3a
GuLoader
86d74d655679ee232b8fcf1a0013a17972b6b93aed25ae8beccd5864a9a1ecbe
GuLoader
94ffc7bec0cef06550d739bc5014a3232c9218a50524de0464b53b6dbbd7ed5f
GuLoader
b0af5e4fbe413f7f7f5d814e5f4c62815cf9df31316e3fa63a8a842245dec524
GuLoader
bb2c0f8952c81ef515102521083091df311b71929dc075a506a93cc5d8855527
GuLoader
d1f2b9d526e525c0606a0e51ffbab653385f39cfe51a72db6c4aae7e980e49ab
GuLoader
+ 740 additional samples on MalwareBazaar
Result
Malware family:
agenttesla
Create hunting rule
Score:
  10/10
Tags:
family:agenttesla execution keylogger spyware stealer trojan
Link:
https://tria.ge/reports/240710-vt9jpssdqa/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: MapViewOfSection
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of NtCreateThreadExHideFromDebugger
Suspicious use of NtSetInformationThreadHideFromDebugger
Suspicious use of SetThreadContext
Looks up external IP address via web service
Command and Scripting Interpreter: PowerShell
AgentTesla
Verdict:
Suspicious
Tags:
n/a
YARA:
n/a
Link:
https://app.threat.zone/submission/fd6b3b2d-0d39-4f40-8a43-9c6b6e4ca177
Unpacked files
SH256 hash:
86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c
MD5 hash:
31ca0fd14af9b89c0aacd1a1c7dfd7e4
SHA1 hash:
67a33810ae059e722bbc5203fa644e5e550d5995
Link:
https://www.unpac.me/results/2ef4ce4f-adb9-439d-bb81-be8376760a5c/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/86d0b3c927b6/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/86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c

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:NSIS_April_2024
Create hunting rule
Author:NDA0N
Description:Detects NSIS installers
Rule name:NSIS_GuLoader
Create hunting rule
Author:NDA0E
Description:Detects GuLoader using NSIS
Rule name:NSIS_GuLoader_July_2024
Create hunting rule
Author:NDA0E
Description:Detects GuLoader packed with NSIS installer
Rule name:PE_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns

File information

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

Malspam

GuLoader

Executable exe 86d0b3c927b629f98bb72beebcdee8a831df152a6a2cedb0d65270c23069037c

(this sample)

  
Delivery method
Distributed via e-mail attachment

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::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::MoveFileA
KERNEL32.dll::MoveFileExA
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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