MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a685d2a250d07901b8b0fbede4d264c44d8f71f4652ef9076b646b8a0435c8ff. 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: 11
| SHA256 hash: | a685d2a250d07901b8b0fbede4d264c44d8f71f4652ef9076b646b8a0435c8ff |
|---|---|
| SHA3-384 hash: | 678f4540697a66d3b568ef0bc82c1d7eb361b49267b2a88eb1e4a8a086b0a30738054f14c22333419f13b558eba438f4 |
| SHA1 hash: | 76956c26dbaf074217dc3d403127991f90e8c95b |
| MD5 hash: | 853b2cca830351537d12dec45890b98b |
| humanhash: | papa-mexico-west-uranus |
| File name: | 18-1.txt |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 248'322 bytes |
| First seen: | 2021-06-08 13:02:17 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7bb9d345a5fec4fbbf5100d6a3ffbb8c (88 x ArkeiStealer, 85 x OskiStealer, 1 x Reconyc) |
| ssdeep | 6144:WfUauY68uSWCx+XA7mg2pN41Ljo3crEHc39:WwY68u1Cx+wm/pYsh |
| Threatray | 1'569 similar samples on MalwareBazaar |
| TLSH | 13345D31B690C031E86210BDC8EF8ABA67AC79711B3690C767D44AA92F713F17E71617 |
| Reporter |  srcr |
| Tags: | exe OskiStealer |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| http://103.114.107.28/l18//6.jpg | https://threatfox.abuse.ch/ioc/73880/ |
| http://103.114.107.28/l18//1.jpg | https://threatfox.abuse.ch/ioc/73881/ |
| http://103.114.107.28/l18//2.jpg | https://threatfox.abuse.ch/ioc/73882/ |
| http://103.114.107.28/l18//3.jpg | https://threatfox.abuse.ch/ioc/73883/ |
| http://103.114.107.28/l18//4.jpg | https://threatfox.abuse.ch/ioc/73884/ |
| http://103.114.107.28/l18//5.jpg | https://threatfox.abuse.ch/ioc/73885/ |
| http://103.114.107.28/l18//7.jpg | https://threatfox.abuse.ch/ioc/73886/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
135
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Vidar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Connection attempt
Creating a file
Sending a UDP request
Deleting a recently created file
Reading critical registry keys
Replacing files
Creating a window
Delayed writing of the file
Running batch commands
Creating a process with a hidden window
Using the Windows Management Instrumentation requests
Searching for the window
Stealing user critical data
Launching a tool to kill processes
Result
Verdict:
MALICIOUS
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:
96 / 100
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)
Machine Learning detection for sample
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
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
Win32.Spyware.AveMaria
Status:
Malicious
First seen:
2021-06-08 13:02:27 UTC
AV detection:
26 of 29 (89.66%)
Threat level:
2/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 1'559 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski discovery infostealer spyware stealer
Behaviour
Checks processor information in registry
Kills process with taskkill
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
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
Unpacked files
SH256 hash:
a685d2a250d07901b8b0fbede4d264c44d8f71f4652ef9076b646b8a0435c8ff
MD5 hash:
853b2cca830351537d12dec45890b98b
SHA1 hash:
76956c26dbaf074217dc3d403127991f90e8c95b
Detections:
win_oski_auto
win_oski_g0
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
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 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Vidar / ArkeiStealer |
| Rule name: | Vidar |
|---|---|
| Author: | kevoreilly |
| Description: | Vidar Payload |
| Rule name: | win_oski_auto |
|---|---|
| Author: | Felix Bilstein - yara-signator at cocacoding dot com |
| Description: | autogenerated rule brought to you by yara-signator |
File information
The table below shows additional information about this malware sample such as delivery method and external references.
Delivery method
Other
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