MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa. 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


OskiStealer


Vendor detections: 13


Intelligence 13 IOCs 7 YARA 7 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa
SHA3-384 hash: 6f5f751d9c9972254b8e238437f50dc50bdae1873cfb2852dd25453d304297bb3a06ccaf3f7baf804d88766ad896887f
SHA1 hash: d9c024d4b196a282c7748f3c3e592d8248d71d3a
MD5 hash: a989e8f8982eb3edd6684d790b22e48e
humanhash: colorado-georgia-network-maryland
File name:a989e8f8982eb3edd6684d790b22e48e.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:1'367'552 bytes
First seen:2021-12-06 11:51:31 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'206 x SnakeKeylogger)
ssdeep 24576:4pEZs+LYr8MBLxQuhGlWut2GEAec6216V5vS/aEe+OUrjdH:4e9LYjLPG8u96DV5Y/Rj1
Threatray 4'177 similar samples on MalwareBazaar
TLSH T166555A5C317024AFE83A853149541F7B9EF12C3D966B53CE731730AB8ABD9468F242E9
File icon (PE):PE icon
dhash icon 86e8c0c8ccd89ce6 (18 x AgentTesla, 18 x Formbook, 8 x Loki)
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://oilproduce.xyz/6.jpg

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://oilproduce.xyz/6.jpg https://threatfox.abuse.ch/ioc/260209/
http://oilproduce.xyz/1.jpg https://threatfox.abuse.ch/ioc/260210/
http://oilproduce.xyz/2.jpg https://threatfox.abuse.ch/ioc/260211/
http://oilproduce.xyz/3.jpg https://threatfox.abuse.ch/ioc/260212/
http://oilproduce.xyz/4.jpg https://threatfox.abuse.ch/ioc/260213/
http://oilproduce.xyz/5.jpg https://threatfox.abuse.ch/ioc/260214/
http://oilproduce.xyz/7.jpg https://threatfox.abuse.ch/ioc/260215/

Intelligence

File Origin
# of uploads :
1
# of downloads :
156
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
a989e8f8982eb3edd6684d790b22e48e.exe
Verdict:
Malicious activity
Analysis date:
2021-12-06 11:55:46 UTC
Tags:
trojan stealer vidar loader phishing
Link:
https://app.any.run/tasks/46ef9216-6422-4813-b95e-b842f77a72d7

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/211753/
Detection(s):
SecuriteInfo.com.PWS-FCUFA989E8F8982E.1719.32104.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Unauthorized injection to a recently created process
Creating a file
Reading critical registry keys
Delayed writing of the file
Сreating synchronization primitives
Running batch commands
Creating a process with a hidden window
Stealing user critical data
Launching a tool to kill processes
Verdict:
Malicious
Threat level:
  10/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61adf9654d8e6f3a5e14551d/reports/e7ea1a4b-8ee3-4aaf-a673-e1c020d50527/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/ede71805-bc02-49c8-876b-063e52dde5e2
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/902220
Signature
C2 URLs / IPs found in malware configuration
Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent)
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 sample
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
PE file contains section with special chars
PE file has nameless sections
Performs DNS queries to domains with low reputation
Posts data to a JPG file (protocol mismatch)
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
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 534698 Sample: HAzXj2g9mF.exe Startdate: 06/12/2021 Architecture: WINDOWS Score: 100 39 Multi AV Scanner detection for domain / URL 2->39 41 Found malware configuration 2->41 43 Multi AV Scanner detection for submitted file 2->43 45 11 other signatures 2->45 8 HAzXj2g9mF.exe 3 2->8         started        process3 file4 27 C:\Users\user\AppData\...\HAzXj2g9mF.exe.log, ASCII 8->27 dropped 47 Performs DNS queries to domains with low reputation 8->47 49 Injects a PE file into a foreign processes 8->49 51 Contains functionality to check if a debugger is running (CheckRemoteDebuggerPresent) 8->51 12 HAzXj2g9mF.exe 196 8->12         started        17 HAzXj2g9mF.exe 8->17         started        19 HAzXj2g9mF.exe 8->19         started        signatures5 process6 dnsIp7 37 oilproduce.xyz 104.21.88.14, 49783, 80 CLOUDFLARENETUS United States 12->37 29 C:\ProgramData\vcruntime140.dll, PE32 12->29 dropped 31 C:\ProgramData\sqlite3.dll, PE32 12->31 dropped 33 C:\ProgramData\softokn3.dll, PE32 12->33 dropped 35 4 other files (none is malicious) 12->35 dropped 53 Tries to harvest and steal browser information (history, passwords, etc) 12->53 55 Tries to steal Crypto Currency Wallets 12->55 21 cmd.exe 1 12->21         started        file8 signatures9 process10 process11 23 taskkill.exe 1 21->23         started        25 conhost.exe 21->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-12-06 11:52:16 UTC
File Type:
PE (.Net Exe)
Extracted files:
22
AV detection:
23 of 28 (82.14%)
Threat level:
  5/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=hvt45wgihff5yehhna24v2qh33shfhugxrtfvfylnynvv5wdh2va._file
Verdict:
malicious
Similar samples:
192f884438809d6fb01ae0c89c4ccd1fdae62d429e78bdbcc4ff4d28a54049af
OskiStealer
66a1b49f893976a60ca25813345ea54a5582acf7a5a0821c03cc45bcfc89b5c5
OskiStealer
6b869d8825516d0b977d48043d1d56d233de7b128074b068566dc33e0ff9fdb7
OskiStealer
b70f4075c4ce52960faacb101aac17a9cd734cbec86b6a9d63944e900420bde1
OskiStealer
c17243e46ff224631e589c55642c3666e5c560715841e8b8ebdd511cb70da8dd
OskiStealer
e447edf7c703f03c3644f4d8b896974b7bfa59e7bc4036af5a800c7135dd09b0
OskiStealer
+ 4'167 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
Link:
https://tria.ge/reports/211206-n1qa3sdhgn/
Behaviour
Checks processor information in registry
Kills process with taskkill
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
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
oilproduce.xyz
Unpacked files
SH256 hash:
a0479c9aebbcc990b7a5c2feb829dcca882729a009476bdb5e94e214460b51ff
MD5 hash:
a42deff2fd658f806e0285150b236185
SHA1 hash:
b8d66968d0860edfe6897b957e95e2997415719d
Link:
https://www.unpac.me/results/ae840a36-e3d8-4ce0-b3d0-472168d230a1/
SH256 hash:
772257fb406613ef9ee6a556afddb70c227e4f8f5669ed74853327f2d3bd9dc4
MD5 hash:
6e70d2d9ced0a929684233de67a0d068
SHA1 hash:
a5bf9dd67ead779fe95aaaf978532d23f80c69d4
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/ae840a36-e3d8-4ce0-b3d0-472168d230a1/
Parent samples :
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa
2e6bebcaaa746b7ab28bf74c49dc0b92b88f564f5b05d6cc414ea1d4aa5f10d4
78acc7d2e613bc812bb1234cb88b6516f957e7ef6980dd211fdbb9f4741f88cd
SH256 hash:
fdb256a562c32e4a299bf1ab5f38488bd78bd0c60abc3c5eafdbc08edc0dd584
MD5 hash:
91883215a201aa7f0d63bd23ae41d20b
SHA1 hash:
2a2b588671a2cdfe3d2968279690e3911a86cc09
Link:
https://www.unpac.me/results/ae840a36-e3d8-4ce0-b3d0-472168d230a1/
SH256 hash:
3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa
MD5 hash:
a989e8f8982eb3edd6684d790b22e48e
SHA1 hash:
d9c024d4b196a282c7748f3c3e592d8248d71d3a
Link:
https://www.unpac.me/results/ae840a36-e3d8-4ce0-b3d0-472168d230a1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/3d67ced8c839/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.51
Link:
https://yomi.yoroi.company/submissions/3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa

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:INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFuture
Create hunting rule
Author:ditekSHen
Description:Detect executables with stomped PE compilation timestamp that is greater than local current time
Rule name:MALWARE_Win_Vidar
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:pe_imphash
Create hunting rule
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload
Rule name:win_oski_auto
Create hunting rule
Author:Felix Bilstein - yara-signator at cocacoding dot com
Description:Detects win.oski.

File information

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

Web download

OskiStealer

Executable exe 3d67ced8c8394bdc10e76835caea07dee4729e86bc665a970b6e1b5af6c33eaa

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1858340/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/211753/

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