MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 aec9eb81f2a2837488165119d41da8eec94607b9bde0b729f811ced008ad95cb. 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: 15
| SHA256 hash: | aec9eb81f2a2837488165119d41da8eec94607b9bde0b729f811ced008ad95cb |
|---|---|
| SHA3-384 hash: | 8085965c2f619ac0c8ec3977e48782f6eff5e3de7383cbdfbddb8684416742d479ad3d3fdf5cd044580522f009160f04 |
| SHA1 hash: | ec7ea2e1d94da696695a1d74ec01ef7713056a62 |
| MD5 hash: | 2894bf86ecc7f9ced40ca45457555a04 |
| humanhash: | oxygen-happy-west-aspen |
| File name: | Inquirypdf.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 457'728 bytes |
| First seen: | 2022-04-13 17:30:58 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger) |
| ssdeep | 6144:jyUNiXZrPZ0MOzxk9adPwitVQEKO7nkFGgrhrs4tttC/uUuu8gb6baCbPUmQ0gue:EJrxmzyoPvJKObkEQs41Cjcvax0mNt |
| Threatray | 4'281 similar samples on MalwareBazaar |
| TLSH | T115A4BEE15B9265D2E1916B35C4F2CCB33AA5B8AD4D58B3DCB885FB542FF6080D041BAC |
| File icon (PE): |  |
| dhash icon | 9d195bde1b6d46b6 (3 x OskiStealer) |
| 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://ndy.derg.tech/6.jpg | https://threatfox.abuse.ch/ioc/519120/ |
| http://ndy.derg.tech/1.jpg | https://threatfox.abuse.ch/ioc/519121/ |
| http://ndy.derg.tech/2.jpg | https://threatfox.abuse.ch/ioc/519122/ |
| http://ndy.derg.tech/3.jpg | https://threatfox.abuse.ch/ioc/519123/ |
| http://ndy.derg.tech/4.jpg | https://threatfox.abuse.ch/ioc/519124/ |
| http://ndy.derg.tech/5.jpg | https://threatfox.abuse.ch/ioc/519125/ |
| http://ndy.derg.tech/7.jpg | https://threatfox.abuse.ch/ioc/519126/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
403
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
vidar
ID:
1
File name:
Inquirypdf.exe
Verdict:
Malicious activity
Analysis date:
2022-04-13 17:35:19 UTC
Tags:
trojan stealer vidar oski loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
DNS request
Reading critical registry keys
Delayed writing of the file
Sending a UDP request
Running batch commands
Using the Windows Management Instrumentation requests
Stealing user critical data
Launching a tool to kill processes
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
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.
Malware family:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
Oski Stealer Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
.NET source code contains very large strings
Antivirus detection for URL or domain
Downloads files with wrong headers with respect to MIME Content-Type
Found evasive API chain (may stop execution after checking locale)
Found many strings related to Crypto-Wallets (likely being stolen)
Icon mismatch, binary includes an icon from a different legit application in order to fool users
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Sigma detected: Suspicious Add Scheduled Task From User AppData Temp
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Oskistealer
Status:
Malicious
First seen:
2022-04-13 17:31:07 UTC
File Type:
PE (.Net Exe)
Extracted files:
14
AV detection:
24 of 41 (58.54%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 4'271 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski discovery infostealer spyware stealer
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Checks installed software on the system
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
Malware Config
C2 Extraction:
ndy.derg.tech
Unpacked files
SH256 hash:
4d3b505e3080d95de7321ff757d9b7bec140fe7f9d3d46bea631389b7f6528e2
MD5 hash:
0dfa177b79a8d93de16d54f5d3da61ed
SHA1 hash:
fd52bbe141c7a9e986aac6453d48eb6810cb9412
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
0680c72c8b8d5bb542632b26852129d39dfc5cfcbd905c5f94ed9456a542f9d1
MD5 hash:
6a718b0088356ad61aa7b38ac03d9a32
SHA1 hash:
4600a6fc81fa08d82db1316591d49edb42294fee
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
SH256 hash:
aec9eb81f2a2837488165119d41da8eec94607b9bde0b729f811ced008ad95cb
MD5 hash:
2894bf86ecc7f9ced40ca45457555a04
SHA1 hash:
ec7ea2e1d94da696695a1d74ec01ef7713056a62
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: | 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.
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