MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 4f12c5dca2099492d0c0cd22edef841cbe8360af9be2d8e9b57c2f83d401c1a7. 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



Threat unknown


Vendor detections: 9


Intelligence 9 IOCs YARA 3 File information Comments

SHA256 hash: 4f12c5dca2099492d0c0cd22edef841cbe8360af9be2d8e9b57c2f83d401c1a7
SHA3-384 hash: 69f13288dacb42126619d853fc3d5975ce468e551484fde49c292f7879f0fb57e8f1ea90b1711f562001d47da91509b7
SHA1 hash: ceaec46f7d65706ffc639e75c515d0a35a21338d
MD5 hash: 470f0db6a56a879985c62cd71c5a98a4
humanhash: utah-ink-robert-summer
File name:uac.dll
Download: download sample
File size:9'728 bytes
First seen:2025-08-09 17:40:58 UTC
Last seen:Never
File type:DLL dll
MIME type:application/x-dosexec
imphash dae02f32a21e03ce65412f6e56942daa (123 x YellowCockatoo, 60 x CobaltStrike, 44 x JanelaRAT)
ssdeep 192:qwnNjJB54SVp8NMfAsbJ0Fet70BeX57aaRxeU3WELi:qwNlD4QeS4sbCc70BIIaRxetki
TLSH T19B12D716A7E89531E8BB1E3498F352250735F9148C37EA6E1598600F5CF2B084AF1FB2
TrID 35.4% (.EXE) Win64 Executable (generic) (10522/11/4)
22.1% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
15.1% (.EXE) Win32 Executable (generic) (4504/4/1)
6.9% (.ICL) Windows Icons Library (generic) (2059/9)
6.8% (.EXE) OS/2 Executable (generic) (2029/13)
Magika pebin
Reporter johnk3r
Tags:dll

Intelligence


File Origin
# of uploads :
1
# of downloads :
61
Origin country :
CH CH
Vendor Threat Intelligence
Verdict:
Malicious
Score:
95.7%
Tags:
malware
Result
Verdict:
Malware
Maliciousness:
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
cmd cmstp fingerprint lolbin obfuscated schtasks
Result
Threat name:
n/a
Detection:
malicious
Classification:
expl
Score:
64 / 100
Signature
Antivirus / Scanner detection for submitted sample
Multi AV Scanner detection for submitted file
Yara detected UAC Bypass using CMSTP
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 1753788 Sample: uac.dll Startdate: 09/08/2025 Architecture: WINDOWS Score: 64 15 Antivirus / Scanner detection for submitted sample 2->15 17 Multi AV Scanner detection for submitted file 2->17 19 Yara detected UAC Bypass using CMSTP 2->19 7 loaddll32.exe 1 2->7         started        process3 process4 9 cmd.exe 1 7->9         started        11 conhost.exe 7->11         started        process5 13 rundll32.exe 9->13         started       
Verdict:
inconclusive
YARA:
6 match(es)
Tags:
.Net Executable PDB Path PE (Portable Executable) SOS: 0.31 Win 32 Exe x86
Threat name:
Win32.Trojan.UacBypass
Status:
Malicious
First seen:
2025-03-31 01:04:07 UTC
File Type:
PE (.Net Dll)
Extracted files:
1
AV detection:
24 of 36 (66.67%)
Threat level:
  5/5
Result
Malware family:
n/a
Score:
  3/10
Tags:
n/a
Unpacked files
SH256 hash:
4f12c5dca2099492d0c0cd22edef841cbe8360af9be2d8e9b57c2f83d401c1a7
MD5 hash:
470f0db6a56a879985c62cd71c5a98a4
SHA1 hash:
ceaec46f7d65706ffc639e75c515d0a35a21338d
Please note that we are no longer able to provide a coverage score for Virus Total.

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:extracted_at_0x44b
Author:cb
Description:sample - file extracted_at_0x44b.exe
Reference:Internal Research
Rule name:MAL_NET_UAC_Bypass_May25
Author:Jonathan Peters (cod3nym)
Description:Detects .NET based tool abusing legitimate Windows utility cmstp.exe to bypass UAC (User-Admin-Controls)
Reference:Internal Research
Rule name:NET
Author:malware-lu

File information


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

DLL dll 4f12c5dca2099492d0c0cd22edef841cbe8360af9be2d8e9b57c2f83d401c1a7

(this sample)

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 (GUARD_CF)high

Comments