MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 126a9e14cf4f6768c6c51eaf4a302d78c40b249adbe57e4b73a4964d72138c69. 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: 9


Intelligence 9 IOCs 7 YARA 4 File information Comments

SHA256 hash: 126a9e14cf4f6768c6c51eaf4a302d78c40b249adbe57e4b73a4964d72138c69
SHA3-384 hash: 691ba9bb00a896065267a2d24fd9d769efbb4c8e70d8245606160d13b6202149a2129d990946394be124bf1f3448c0c5
SHA1 hash: 7cd993267628a56764c442b6b211ebeb7446f12d
MD5 hash: 1a332cb83ff3faed6778e000639c2c16
humanhash: louisiana-nitrogen-lion-mexico
File name:1a332cb83ff3faed6778e000639c2c16.exe
Download: download sample
Signature OskiStealer
File size:409'400 bytes
First seen:2021-05-14 14:10:54 UTC
Last seen:2021-05-14 15:41:15 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger)
ssdeep 6144:84ZJtfUeAIQHuA36cdFku5EN9W03Q+98Zkjf2XkxxDLHkzxtmdN:heeAItC66FkEENJ3aQOXkxxDLE
Threatray 1'196 similar samples on MalwareBazaar
TLSH 78949C3AF15FF402C2D4B678E6E5410406EB9D4C3C2DA6693858E925E476E887F47F23
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://31.210.20.5/6.jpg

Indicators Of Compromise (IOCs)


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

IOCThreatFox Reference
http://31.210.20.5/6.jpg https://threatfox.abuse.ch/ioc/42124/
http://31.210.20.5/1.jpg https://threatfox.abuse.ch/ioc/42125/
http://31.210.20.5/2.jpg https://threatfox.abuse.ch/ioc/42126/
http://31.210.20.5/3.jpg https://threatfox.abuse.ch/ioc/42127/
http://31.210.20.5/4.jpg https://threatfox.abuse.ch/ioc/42128/
http://31.210.20.5/5.jpg https://threatfox.abuse.ch/ioc/42129/
http://31.210.20.5/7.jpg https://threatfox.abuse.ch/ioc/42130/

Intelligence


File Origin
# of uploads :
4
# of downloads :
116
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
1a332cb83ff3faed6778e000639c2c16.exe
Verdict:
No threats detected
Analysis date:
2021-05-14 14:16:26 UTC
Tags:
n/a

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Result
Verdict:
Malware
Maliciousness:

Behaviour
Sending a UDP request
Creating a file in the %temp% directory
Creating a process from a recently created file
Creating a file
Deleting a recently created file
Replacing files
Creating a window
Running batch commands
Creating a process with a hidden window
Unauthorized injection to a recently created process
Unauthorized injection to a recently created process by context flags manipulation
Launching a tool to kill processes
Enabling autorun by creating a file
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.
Result
Threat name:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
Creates an undocumented autostart registry key
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Writes to foreign memory regions
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
behaviorgraph top1 signatures2 2 Behavior Graph ID: 414325 Sample: CBkbgQpaAr.exe Startdate: 14/05/2021 Architecture: WINDOWS Score: 100 41 Found malware configuration 2->41 43 Multi AV Scanner detection for dropped file 2->43 45 Multi AV Scanner detection for submitted file 2->45 47 5 other signatures 2->47 8 CBkbgQpaAr.exe 13 2->8         started        process3 file4 23 C:\Users\user\AppData\Roaming\...\chrom.exe, PE32 8->23 dropped 25 C:\Users\user\AppData\...\CBkbgQpaAr.exe, PE32 8->25 dropped 27 C:\Users\...\CBkbgQpaAr.exe:Zone.Identifier, ASCII 8->27 dropped 29 C:\Users\user\AppData\...\CBkbgQpaAr.exe.log, ASCII 8->29 dropped 49 Creates an undocumented autostart registry key 8->49 51 Writes to foreign memory regions 8->51 53 Allocates memory in foreign processes 8->53 55 Injects a PE file into a foreign processes 8->55 12 CBkbgQpaAr.exe 193 8->12         started        signatures5 process6 dnsIp7 39 31.210.20.5, 49706, 80 PLUSSERVER-ASN1DE Netherlands 12->39 31 C:\ProgramData\vcruntime140.dll, PE32 12->31 dropped 33 C:\ProgramData\sqlite3.dll, PE32 12->33 dropped 35 C:\ProgramData\softokn3.dll, PE32 12->35 dropped 37 4 other files (none is malicious) 12->37 dropped 57 Multi AV Scanner detection for dropped file 12->57 59 Tries to harvest and steal browser information (history, passwords, etc) 12->59 61 Tries to steal Crypto Currency Wallets 12->61 17 cmd.exe 1 12->17         started        file8 signatures9 process10 process11 19 taskkill.exe 1 17->19         started        21 conhost.exe 17->21         started       
Threat name:
ByteCode-MSIL.Trojan.CrypterX
Status:
Malicious
First seen:
2021-05-14 02:58:41 UTC
AV detection:
18 of 29 (62.07%)
Threat level:
  5/5
Result
Malware family:
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
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:
31.210.20.5
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:dsc
Author:Aaron DeVera
Description:Discord domains
Rule name:INDICATOR_KB_CERT_04f131322cc31d92c849fca351d2f141
Author:ditekSHen
Description:Detects executables signed with stolen, revoked or invalid certificates
Rule name:pe_imphash
Rule name:Skystars_Malware_Imphash
Author:Skystars LightDefender
Description:imphash

File information


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

Web download

OskiStealer

Executable exe 126a9e14cf4f6768c6c51eaf4a302d78c40b249adbe57e4b73a4964d72138c69

(this sample)

  
Delivery method
Distributed via web download

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