MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 841a9afb39d8f6d7262af9e44b8f94910c4b219d7b8353e3e10d869dc3fb62f0. 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: 10
| SHA256 hash: | 841a9afb39d8f6d7262af9e44b8f94910c4b219d7b8353e3e10d869dc3fb62f0 |
|---|---|
| SHA3-384 hash: | fce568cca51eb0cfad2fe4a2ce1d69a7e5e05c241063aa87e7f9f235d2b9259966120365130a42ac8c18e5ae83ccf783 |
| SHA1 hash: | e1757888e2ea21c867c73639e7667000a3fd83fa |
| MD5 hash: | a4726e29e4a88c08b3b7cc8d19286b39 |
| humanhash: | enemy-spaghetti-princess-high |
| File name: | New Order TL273313533.pdf.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 360'459 bytes |
| First seen: | 2021-06-07 05:42:20 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 7fa974366048f9c551ef45714595665e (946 x Formbook, 398 x Loki, 261 x AgentTesla) |
| ssdeep | 6144:TQqPHE2zYjsYNlN/bWt0DYkmvBp48VQORbP81B5QOmS906xYp:BEeX6rzWmjmuKbP6BKOmk06xYp |
| Threatray | 1'457 similar samples on MalwareBazaar |
| TLSH | 8174F12649868922E441FE795E70B65AA777CD006B7F396EEF1F3BAD1DF43610C22024 |
| Reporter |  abuse_ch |
| 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://91.198.123.38/tsc//6.jpg | https://threatfox.abuse.ch/ioc/72147/ |
| http://91.198.123.38/tsc//1.jpg | https://threatfox.abuse.ch/ioc/72149/ |
| http://91.198.123.38/tsc//2.jpg | https://threatfox.abuse.ch/ioc/72150/ |
| http://91.198.123.38/tsc//3.jpg | https://threatfox.abuse.ch/ioc/72151/ |
| http://91.198.123.38/tsc//4.jpg | https://threatfox.abuse.ch/ioc/72152/ |
| http://91.198.123.38/tsc//5.jpg | https://threatfox.abuse.ch/ioc/72153/ |
| http://91.198.123.38/tsc//7.jpg | https://threatfox.abuse.ch/ioc/72154/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
132
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
New Order TL273313533.pdf.exe
Verdict:
Malicious activity
Analysis date:
2021-06-07 06:39:55 UTC
Tags:
installer trojan stealer vidar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Creating a file in the %temp% directory
Creating a file
Sending a UDP request
Unauthorized injection to a recently created process
Connection attempt
Deleting a recently created file
Reading critical registry keys
Replacing files
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:
100 / 100
Signature
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Initial sample is a PE file and has a suspicious name
Maps a DLL or memory area into another process
Multi AV Scanner detection for submitted file
Sigma detected: Suspicious Double Extension
Uses an obfuscated file name to hide its real file extension (double extension)
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'447 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 behavior: MapViewOfSection
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
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
91.198.123.38/tsc/
Unpacked files
SH256 hash:
841a9afb39d8f6d7262af9e44b8f94910c4b219d7b8353e3e10d869dc3fb62f0
MD5 hash:
a4726e29e4a88c08b3b7cc8d19286b39
SHA1 hash:
e1757888e2ea21c867c73639e7667000a3fd83fa
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.
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