MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 ce85954189b88a7ad99ba2c31da1b4e0a645db1c746df1f9f5f85e4cc6fdc5e7. 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: | ce85954189b88a7ad99ba2c31da1b4e0a645db1c746df1f9f5f85e4cc6fdc5e7 |
|---|---|
| SHA3-384 hash: | e09b6af156774194b3f907ce8294e7433c2029866675b13a6f7987bb1d3d609b1a7829811cdbc21ff39d2bdb79d63121 |
| SHA1 hash: | 164f8a60115206f790c22c54e9826c89571ba12f |
| MD5 hash: | cf0a1c704adde7c2c544ec000173cd32 |
| humanhash: | hot-snake-double-apart |
| File name: | RFQ.DOCUMENT.bit.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 758'272 bytes |
| First seen: | 2022-05-17 09:55:26 UTC |
| Last seen: | 2022-05-17 11:02:42 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'740 x AgentTesla, 19'600 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 12288:49QYyrHz22aRruunRZp9jqbqHYSzee8Z4a+RF5p17C5wHW7zkrfHIEbqOGV2/6OI:4SGuw4bSzeeMkP/6Pa/IqfGVY6OI |
| Threatray | 4'069 similar samples on MalwareBazaar |
| TLSH | T1E6F4F11436D98A15E2BF3F3AEBF568514BB2F9571C21C74E2B45025E0823782ED2773A |
| TrID | 69.1% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 9.9% (.EXE) Win64 Executable (generic) (10523/12/4) 6.2% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.7% (.EXE) Win16 NE executable (generic) (5038/12/1) 4.2% (.EXE) Win32 Executable (generic) (4505/5/1) |
| 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://lettingos.co.vu/6.jpg | https://threatfox.abuse.ch/ioc/580605/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
240
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
RFQ.DOCUMENT.bit.exe
Verdict:
No threats detected
Analysis date:
2022-05-17 10:02:39 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Malware
Maliciousness:
Behaviour
DNS request
Creating a file
Reading critical registry keys
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Adding an access-denied ACE
Launching a process
Stealing user critical data
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated
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.
Verdict:
Unknown
Result
Threat name:
Oski Stealer, Vidar
Detection:
malicious
Classification:
troj.spyw.expl.evad
Score:
100 / 100
Signature
Allocates memory in foreign processes
C2 URLs / IPs found in malware configuration
Contains functionality to hide user accounts
DLL side loading technique detected
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Initial sample is a PE file and has a suspicious name
Injects a PE file into a foreign processes
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Snort IDS alert for network traffic
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
Writes to foreign memory regions
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected UAC Bypass using CMSTP
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Injuke
Status:
Malicious
First seen:
2022-05-17 09:20:40 UTC
File Type:
PE (.Net Exe)
Extracted files:
4
AV detection:
16 of 41 (39.02%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 4'059 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski infostealer spyware suricata
Behaviour
Checks processor information in registry
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Program crash
Suspicious use of SetThreadContext
Accesses cryptocurrency files/wallets, possible credential harvesting
Loads dropped DLL
Downloads MZ/PE file
Oski
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
lettingos.co.vu
Unpacked files
SH256 hash:
ce85954189b88a7ad99ba2c31da1b4e0a645db1c746df1f9f5f85e4cc6fdc5e7
MD5 hash:
cf0a1c704adde7c2c544ec000173cd32
SHA1 hash:
164f8a60115206f790c22c54e9826c89571ba12f
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Oski
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: | BitcoinAddress |
|---|---|
| Author: | Didier Stevens (@DidierStevens) |
| Description: | Contains a valid Bitcoin address |
| Rule name: | MALWARE_Win_Vidar |
|---|---|
| Author: | ditekSHen |
| Description: | Detects Vidar / ArkeiStealer |
| Rule name: | pe_imphash |
|---|
| Rule name: | Skystars_Malware_Imphash |
|---|---|
| Author: | Skystars LightDefender |
| Description: | imphash |
| Rule name: | Vidar |
|---|---|
| Author: | kevoreilly |
| Description: | Vidar Payload |
| Rule name: | win_oski_auto |
|---|---|
| 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.
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