MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18. 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: 12


Intelligence 12 IOCs 7 YARA 6 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18
SHA3-384 hash: 1b6c1deccb74bb71bdfeb4252f5b95c1fa7313fbeb5d8f59cfced5f895c4b7ecc7f6bd4d4fd4d68f51d8ccbf204c9df9
SHA1 hash: d47680275cf1bf0a884361d7683eadff5d1020dd
MD5 hash: e8a4177eb1ca6ffcb252e7cd2e8b1814
humanhash: mirror-oven-texas-butter
File name:e8a4177eb1ca6ffcb252e7cd2e8b1814.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:1'053'696 bytes
First seen:2021-10-07 15:01:34 UTC
Last seen:2021-10-07 16:26:26 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger)
ssdeep 12288:OeA04DyL9pD3n+0SN19iMfTO3qKE65aIF8TfEIF3c7u:9O+L7D3+1HTa15DYfEI1+
TLSH T11025F6102695CA11D1B637F4D860CAF093656C15DA29C28B2DF1BEEF79B1B03CE11A6F
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://lg-tvproducts.xyz/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://lg-tvproducts.xyz/6.jpg https://threatfox.abuse.ch/ioc/231211/
http://lg-tvproducts.xyz/1.jpg https://threatfox.abuse.ch/ioc/231212/
http://lg-tvproducts.xyz/2.jpg https://threatfox.abuse.ch/ioc/231213/
http://lg-tvproducts.xyz/3.jpg https://threatfox.abuse.ch/ioc/231214/
http://lg-tvproducts.xyz/4.jpg https://threatfox.abuse.ch/ioc/231215/
http://lg-tvproducts.xyz/5.jpg https://threatfox.abuse.ch/ioc/231216/
http://lg-tvproducts.xyz/7.jpg https://threatfox.abuse.ch/ioc/231217/

Intelligence

File Origin
# of uploads :
2
# of downloads :
202
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
e8a4177eb1ca6ffcb252e7cd2e8b1814.exe
Verdict:
Malicious activity
Analysis date:
2021-10-07 15:06:02 UTC
Tags:
trojan stealer vidar phishing loader
Link:
https://app.any.run/tasks/a761fe3a-eda7-412b-99f5-e16c64b6f584

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/195887/
Detection(s):
SecuriteInfo.com.ArtemisE8A4177EB1CA.25491.23962.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Likely Malicious
Threat level:
  7.5/10
Confidence:
100%
Tags:
monero obfuscated packed
Link:
https://www.filescan.io/uploads/615f0bef98a6280f3933bb4c/reports/90114828-cc58-4eb4-878b-28bd7885f6bf/overview
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/cdb4bea9-434b-44ac-91d1-24cb6c89cd9f
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/866495
Signature
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
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: 498923 Sample: iuveFh5hgJ.exe Startdate: 07/10/2021 Architecture: WINDOWS Score: 100 32 Found malware configuration 2->32 34 Yara detected Oski Stealer 2->34 36 Yara detected AntiVM3 2->36 38 5 other signatures 2->38 8 iuveFh5hgJ.exe 3 2->8         started        process3 signatures4 40 Performs DNS queries to domains with low reputation 8->40 11 iuveFh5hgJ.exe 196 8->11         started        process5 dnsIp6 30 lg-tvproducts.xyz 195.133.18.140, 49780, 80 AS-REGRU Russian Federation 11->30 22 C:\ProgramData\vcruntime140.dll, PE32 11->22 dropped 24 C:\ProgramData\sqlite3.dll, PE32 11->24 dropped 26 C:\ProgramData\softokn3.dll, PE32 11->26 dropped 28 4 other files (none is malicious) 11->28 dropped 42 Tries to harvest and steal browser information (history, passwords, etc) 11->42 44 Tries to steal Crypto Currency Wallets 11->44 16 cmd.exe 1 11->16         started        file7 signatures8 process9 process10 18 taskkill.exe 1 16->18         started        20 conhost.exe 16->20         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18/
Threat name:
ByteCode-MSIL.Packed.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-10-07 15:02:08 UTC
AV detection:
10 of 28 (35.71%)
Threat level:
  1/5
Detection(s):
Suspicious file
Link:
https://check.spamhaus.org/check/?searchterm=ggypahx7zm6owudgssvuty7t7fycbefejhbbqkvsz7gzngzxr4ma._file
Verdict:
malicious
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
Link:
https://tria.ge/reports/211007-segh9sceg9/
Behaviour
Checks processor information in registry
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
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
lg-tvproducts.xyz
Unpacked files
SH256 hash:
d434e7cb4105d7e760a39a1a8a1306338b00fbd6507025d53e4c44ede73d3788
MD5 hash:
6613b992e916924c3f38a179bb9866ab
SHA1 hash:
cd5741f4d0a4685c5fd9c9e2e708bbf33ec1691a
Link:
https://www.unpac.me/results/5ccddbc0-080f-47e1-97a6-87e014f01855/
SH256 hash:
e9a470a20a72487f5acf054345312f709409183ca4586eb350e9d585e145dfa2
MD5 hash:
7c6d01e8d539bac91eddff1ccbc13419
SHA1 hash:
5f6dffd753fc6cf2b1d861c784793964481aa587
Link:
https://www.unpac.me/results/5ccddbc0-080f-47e1-97a6-87e014f01855/
SH256 hash:
5b16dd238187b5befd53bba918112083a5990c73fe8d0606b3eec65cc3a5aaf6
MD5 hash:
dff8a81f8ca81545b9f960470ab77267
SHA1 hash:
5ad9fe77c2c9bbaf78ad118324ae1e0384202c54
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/5ccddbc0-080f-47e1-97a6-87e014f01855/
Parent samples :
5490a5cc380603d9f186201100008c79c6c32cd898cb963feffc5290521a9f3c
1ad022fe6f175e63e599e94fcc39c0e909e4f733f34e290dd3a6ce9692aa2f33
31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18
4acff00f1935efe2a12c8537de8b10c33bd714a07a8cdaafb56459f368acc669
136a24bbf74b38d2b898d3188864ff81134d05b1a7ee7aa4cf566d127a04a4ec
SH256 hash:
31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18
MD5 hash:
e8a4177eb1ca6ffcb252e7cd2e8b1814
SHA1 hash:
d47680275cf1bf0a884361d7683eadff5d1020dd
Link:
https://www.unpac.me/results/5ccddbc0-080f-47e1-97a6-87e014f01855/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/31b0f01effcb/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
vidar
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18

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: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 31b0f01effcb3ceb506694ab49e3f3f9702090a449c2182ab2cfcd969b378f18

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1659284/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/195887/

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