MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493. 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


ArkeiStealer


Vendor detections: 11


Intelligence 11 IOCs YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493
SHA3-384 hash: cdfcd0db456375cb5b5876beef46547d8a7e3d69ebb891d626be8488afcd16cee27d89deba419acb08db5319033c2568
SHA1 hash: 51826c321b6ca82a4d3a41a04d1b8ab5993c8551
MD5 hash: 0572b374bc96b2c4ea764e0012d10bf5
humanhash: papa-don-failed-vermont
File name:POZ1809027.bit.gz.exe
Download: download sample
Signature ArkeiStealer
Create hunting rule
File size:647'680 bytes
First seen:2022-05-13 06:31:34 UTC
Last seen:2022-05-23 11:56:42 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:cxl6QtCPqWku4B0ufYB6i7Iv2XDYog06LPhxS5KMVtJLvvw/rkDYFm:vACdkLxYB6i5T806rhxSsMXV34iYw
Threatray 4'042 similar samples on MalwareBazaar
TLSH T10CD4F03EF9F78F22C7082775C0E259000330565AE33BE39A274A52E59905BD78D9ABD7
TrID 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
9.9% (.EXE) Win64 Executable (generic) (10523/12/4)
6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
4.7% (.EXE) Win16 NE executable (generic) (5038/12/1)
4.2% (.EXE) Win32 Executable (generic) (4505/5/1)
Reporter cocaman
Tags:ArkeiStealer exe

Intelligence

File Origin
# of uploads :
5
# of downloads :
255
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/270302/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed replace.exe
Link:
https://www.filescan.io/uploads/627dfb67804c0977d3e9c7c8/reports/aca0d16c-9ea8-4ca6-89de-13c849fbfd2e/overview
Result
Verdict:
UNKNOWN
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/e0f3dd65-bb88-4817-8de9-993b6034e80c
Result
Threat name:
Oski Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/993333
Signature
.NET source code contains method to dynamically call methods (often used by packers)
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Posts data to a JPG file (protocol mismatch)
Snort IDS alert for network traffic
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 steal Crypto Currency Wallets
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Generic Downloader
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 625829 Sample: POZ1809027.bit.gz.exe Startdate: 13/05/2022 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 12 other signatures 2->61 8 POZ1809027.bit.gz.exe 7 2->8         started        process3 file4 35 C:\Users\user\AppData\...\ArsdRTTUqC.exe, PE32 8->35 dropped 37 C:\Users\...\ArsdRTTUqC.exe:Zone.Identifier, ASCII 8->37 dropped 39 C:\Users\user\AppData\Local\...\tmpB8D7.tmp, XML 8->39 dropped 41 C:\Users\user\...\POZ1809027.bit.gz.exe.log, ASCII 8->41 dropped 63 Uses schtasks.exe or at.exe to add and modify task schedules 8->63 65 Adds a directory exclusion to Windows Defender 8->65 67 Injects a PE file into a foreign processes 8->67 12 POZ1809027.bit.gz.exe 196 8->12         started        17 powershell.exe 24 8->17         started        19 powershell.exe 25 8->19         started        21 schtasks.exe 1 8->21         started        signatures5 process6 dnsIp7 51 chibuzorbaby.com 142.4.0.135, 49761, 49769, 80 UNIFIEDLAYER-AS-1US United States 12->51 53 lettingos.co.vu 12->53 43 C:\ProgramData\vcruntime140.dll, PE32 12->43 dropped 45 C:\ProgramData\sqlite3.dll, PE32 12->45 dropped 47 C:\ProgramData\softokn3.dll, PE32 12->47 dropped 49 4 other files (none is malicious) 12->49 dropped 69 Tries to harvest and steal browser information (history, passwords, etc) 12->69 71 Tries to steal Crypto Currency Wallets 12->71 23 cmd.exe 12->23         started        25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        file8 signatures9 process10 process11 31 conhost.exe 23->31         started        33 taskkill.exe 23->33         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493/
Threat name:
ByteCode-MSIL.Trojan.ArkeiStealer
Create hunting rule
Status:
Malicious
First seen:
2022-05-13 06:32:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
21 of 26 (80.77%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=72k4ytrktnvzqlwxfebdwdgxa3wlkbd6w5mgtzg4x32xve3vosjq._file
Verdict:
malicious
Similar samples:
11810610b0fcbfe0edc318d79ede6dcbb2c4b34dccbace91d3775001187c3c96
ArkeiStealer
14a2149ffb9dc7a2bfa96e92ee4d7052222d5550431ffebc471b31859b397024
ArkeiStealer
1c53cbedc20ce9cf5b5e69fac6211133faa197f85b214a865f71cf4e0879dd99
ArkeiStealer
6107e3ec5898ce2f80b04ee16b3a41107a0733339cded01cf8c5ade5fc105472
ArkeiStealer
6849e65e9ac20880fa99583b202ae710e0a3885cd72692a0c1b4d72aae109adf
ArkeiStealer
aec9eb81f2a2837488165119d41da8eec94607b9bde0b729f811ced008ad95cb
ArkeiStealer
+ 4'032 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer suricata
Link:
https://tria.ge/reports/220513-halx3scgh2/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
lettingos.co.vu
Unpacked files
SH256 hash:
c206122a7336385be557580c114ac0923192f61bc8f77aa58c898135438399f9
MD5 hash:
6c9e813248a01432890c476813d210b8
SHA1 hash:
fd54aa3af58fc3a88cb3fd6753d773cd6c51b7f8
Link:
https://www.unpac.me/results/dfe223ba-39c8-4a56-8703-d809ec4f31b7/
SH256 hash:
064cd0ca706c86dcff58598e7a41071915052fe44cc92fa63480e497467c89a8
MD5 hash:
f66c1cf8f8c8772978de7a24716311d2
SHA1 hash:
9719bd649ae708dbdb100cec94bf571f31990c44
Link:
https://www.unpac.me/results/dfe223ba-39c8-4a56-8703-d809ec4f31b7/
SH256 hash:
6a2ed9c157a9082887f2b287aca8af52f1e4b9625b811b370f2cb9c05fae02cc
MD5 hash:
6f207176c25f7587f50065c007e94b14
SHA1 hash:
84e07001a6451c0991c45e343ba2950dac0376c7
Link:
https://www.unpac.me/results/dfe223ba-39c8-4a56-8703-d809ec4f31b7/
SH256 hash:
37ff4154740c4e2f05653cc091efebe620defcef33bebea506f88942dad27f11
MD5 hash:
64fa250aa0412342cb97b8482c531363
SHA1 hash:
0b9913668892415ef3636ebab8135a075e4e9244
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/dfe223ba-39c8-4a56-8703-d809ec4f31b7/
SH256 hash:
fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493
MD5 hash:
0572b374bc96b2c4ea764e0012d10bf5
SHA1 hash:
51826c321b6ca82a4d3a41a04d1b8ab5993c8551
Link:
https://www.unpac.me/results/dfe223ba-39c8-4a56-8703-d809ec4f31b7/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/fe95cc4e2a9b/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/fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493

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_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

File information

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

Malspam

ArkeiStealer

zip ca40854f746db83bc3afa025914f633178fdef47a8036c75db9d4e770fa7c72d

ArkeiStealer

Executable exe fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493

(this sample)

  
Delivery method
Other
  
Dropped by
SHA256 ca40854f746db83bc3afa025914f633178fdef47a8036c75db9d4e770fa7c72d
Cape
Cape
https://www.capesandbox.com/analysis/270302/
  
Dropped by
MD5 a975c3b6aab1cc64d124098db4729d75

Comments