MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769. 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


Autorun


Vendor detections: 13


Intelligence 13 IOCs YARA 14 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769
SHA3-384 hash: 584407be8130e7e0a4b42b03e86de5de96b4bee8eef5e8c56d570cb428216e258fe2552a91e004c99628e04b4e0fb10e
SHA1 hash: d5c44497cf6a6fe3ebc9e313527724aed176602b
MD5 hash: c3d34a2cffc9d2e2ec9151473c37f5fb
humanhash: zebra-alanine-cold-hotel
File name:2023-04-15_c3d34a2cffc9d2e2ec9151473c37f5fb_ryuk
Download: download sample
Signature Autorun
Create hunting rule
File size:2'576'399 bytes
First seen:2023-04-16 02:56:27 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash 12fcd3183e0fb67f1e38925ed5c0c47c (104 x Autorun, 3 x Ryuk)
ssdeep 12288:sp4pNfz3ymJnJ8QCFkxCaQTOlPes5Z76k/L/KB8NIpYJTCihq82WFpXKEVFA2MC/:eEtl9mRda12sX7hKB8NIyXbacAfu9
Threatray 28 similar samples on MalwareBazaar
TLSH T122C55C64E610D8BAF3D6E978540E7F290CE57D120BC22D4DA49DAB241FF0EF4E5B2294
TrID 47.1% (.CPL) Windows Control Panel Item (generic) (197083/11/60)
32.0% (.EXE) ASPack compressed Win32 Executable (generic) (133819/79/30)
9.9% (.EXE) Win32 EXE PECompact compressed (generic) (41569/9/9)
3.1% (.SCR) Windows screen saver (13097/50/3)
2.3% (.EXE) DOS Borland compiled Executable (generic) (10000/1/2)
dhash icon f270f08eb2ea6870 (107 x Autorun, 3 x Ryuk, 2 x Stihat)
Reporter petikvx
Tags:autorun

Intelligence

File Origin
# of uploads :
1
# of downloads :
120
Origin country :
FR FR
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
2023-04-15_c3d34a2cffc9d2e2ec9151473c37f5fb_ryuk
Verdict:
Malicious activity
Analysis date:
2023-04-16 03:02:29 UTC
Tags:
n/a
Link:
https://app.any.run/tasks/c3f051d7-04ef-4c0f-8619-1280e77eeca9

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/382529/
Detection(s):
PUA.Win.Packer.Asprotect-3
Create hunting rule

PUA.Win.Packer.Aspack-30
Create hunting rule

Sanesecurity.Malware.29047.BadMsg.UNOFFICIAL
Create hunting rule

Win.Virus.Stihat-9753082-0
Create hunting rule

Win.Dropper.Mepaow-9786631-0
Create hunting rule

Win.Ransomware.Ryuk-9859740-0
Create hunting rule

Win.Dropper.Ausiv-9875564-0
Create hunting rule

Win.Malware.Razy-9886340-0
Create hunting rule

Win.Malware.Mepaow-6725391-0
Create hunting rule

Win.Malware.Sivis-6726549-0
Create hunting rule

Win.Malware.Mepaow-6725393-0
Create hunting rule

Win.Malware.Mepaow-6725397-0
Create hunting rule

Win.Malware.Mepaow-6725401-0
Create hunting rule

Win.Packed.Sivis-6726654-0
Create hunting rule

Win.Virus.Lamer-6733340-0
Create hunting rule

Win.Ransomware.Ryuk-6892922-0
Create hunting rule

Win.Trojan.Autorun-7409
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Creating a window
Creating a file in the Windows subdirectories
Creating a process from a recently created file
Creating a process with a hidden window
Creating a file
Enabling the 'hidden' option for recently created files
Moving a recently created file
Changing a file
Modifying an executable file
Enabling autorun
Enabling a "Do not show hidden files" option
Enabling autorun by creating a file
Infecting executable files
Result
Malware family:
n/a
Score:
  5/10
Tags:
n/a
Link:
https://dragonfly.certego.net/analysis/79830/overview
Behaviour
MalwareBazaar
CheckCmdLine
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
dde exploit explorer.exe greyware keylogger overlay packed packed packed ransomware ryuk shell32.dll virus
Link:
https://www.filescan.io/uploads/643b6402f4a1f6ede14ef5fd/reports/5d49ee2e-dbef-4a02-9617-d1ee087ab106/overview
Verdict:
Malicious
Labled as:
Win/malicious_confidence_100%
Link:
https://www.hybrid-analysis.com/sample/dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769
Malware family:
Ryuk
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/3d7e4174-df95-4360-9d33-8411f8418d0a
Result
Threat name:
Autorun
Create hunting rule
Detection:
malicious
Classification:
spre.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1214489
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Changes the view of files in windows explorer (hidden files and folders)
Creates an undocumented autostart registry key
Creates autorun.inf (USB autostart)
Creates files in the recycle bin to hide itself
Drops executable to a common third party application directory
Drops executables to the windows directory (C:\Windows) and starts them
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Yara detected Autorun
Behaviour
Behavior Graph:
Download SVG
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769/
Threat name:
Win32.Worm.Stihat
Create hunting rule
Status:
Malicious
First seen:
2023-04-15 17:44:27 UTC
File Type:
PE (Exe)
Extracted files:
44
AV detection:
23 of 24 (95.83%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=3rhk5w3326vr5njhyf3kj4m557wzzflwybn2rcd3x7uovnctc5uq._file
Verdict:
malicious
Similar samples:
001a09a29deab5195eda46bad91e51b234655325b641e211ed8234e934956ead
Autorun
02605df1299e8107d4ea5bc860868432f630ad4b2722862229078b570efca6b7
Autorun
0c7da4e446a97f08bbf6c0abe987810047163150d70f0a282c2f7cea674d7286
Autorun
182cc09a57686761948eaa8e7bc012ea469f1e857b0b3029864787d30b787dbc
Autorun
1db9ec5678e417eef3d6e080a031c8adfc1fc85127317b952bc33733d93841e0
Autorun
2816455e98cadd83ca1bc23f088d83a95b8c7bec196b9a8b1736a336967b5195
Autorun
2f903758f36b65ac656a83ac96b862868e83de61d819b2e679ce9065064dbded
Autorun
5b5796f2098629008eedadd5420d5fc1845a305fe2d41fe03773f71b36219fd7
Autorun
6eb27e83c45d3b418375d23da6194a7058e816c37fc0af682d2b7c815f083879
Autorun
a1524f1194fd6879434a294c6ba6daadd5ac91179eb9dc40fa6034b88407237f
Autorun
+ 18 additional samples on MalwareBazaar
Result
Malware family:
n/a
Score:
  10/10
Tags:
persistence
Link:
https://tria.ge/reports/230416-dflr2sac2w/
Behaviour
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Drops file in Program Files directory
Drops autorun.inf file
Drops file in System32 directory
Enumerates connected drives
Drops startup file
Executes dropped EXE
Loads dropped DLL
Modifies WinLogon for persistence
Unpacked files
SH256 hash:
dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769
MD5 hash:
c3d34a2cffc9d2e2ec9151473c37f5fb
SHA1 hash:
d5c44497cf6a6fe3ebc9e313527724aed176602b
Detections:
win_ryuk_auto
Create hunting rule
Link:
https://www.unpac.me/results/f7cab98b-f1ee-4ff1-aaee-525936f55380/
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/dc4eaedb7bd7ab1eb527c176a4f19defed9c9576c05ba8887bbfe8eab4531769

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:BitcoinAddress
Create hunting rule
Author:Didier Stevens (@DidierStevens)
Description:Contains a valid Bitcoin address
Rule name:Disable_Defender
Create hunting rule
Author:iam-py-test
Description:Detect files disabling or modifying Windows Defender, Windows Firewall, or Microsoft Smartscreen
Rule name:INDICATOR_EXE_Packed_ASPack
Create hunting rule
Author:ditekSHen
Description:Detects executables packed with ASPack
Rule name:meth_stackstrings
Create hunting rule
Author:Willi Ballenthin
Rule name:PE_Potentially_Signed_Digital_Certificate
Create hunting rule
Author:albertzsigovits
Rule name:Ryuk_SequentialComparisons_B
Create hunting rule
Author:Malware Utkonos
Description:Sequential comparison of SID lookup result characters, variant B.
Rule name:shellcode
Create hunting rule
Author:nex
Description:Matched shellcode byte patterns
Rule name:SUSP_OneNote
Create hunting rule
Author:spatronn
Description:Hard-Detect One
Rule name:Win32_Ransomware_Ryuk
Create hunting rule
Author:ReversingLabs
Description:Yara rule that detects Ryuk ransomware.
Rule name:Windows_Ransomware_Ryuk_6c726744
Create hunting rule
Author:Elastic Security
Description:Identifies RYUK ransomware
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk
Rule name:Windows_Ransomware_Ryuk_6c726744
Create hunting rule
Description:Identifies RYUK ransomware
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk
Rule name:Windows_Ransomware_Ryuk_878bae7e
Create hunting rule
Author:Elastic Security
Description:Identifies RYUK ransomware
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk
Rule name:Windows_Ransomware_Ryuk_8ba51798
Create hunting rule
Author:Elastic Security
Description:Identifies RYUK ransomware
Reference:https://malpedia.caad.fkie.fraunhofer.de/details/win.ryuk
Rule name:win_ryuk_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.ryuk.

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/382529/

Comments