MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 4fdd785a78c5dfcecf40931ff10d7d1a9dfe36a0dc85e13e72ab0ef75230ee52. 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: | 4fdd785a78c5dfcecf40931ff10d7d1a9dfe36a0dc85e13e72ab0ef75230ee52 |
|---|---|
| SHA3-384 hash: | 3c027ecd1ea4bd7f1e10b5d02b6b3de599123a7b854606c96843b7c86270a22bfca5d6d822f82bc798bf771a484cc5c8 |
| SHA1 hash: | 5056a2ff7bad3ff23b6fa027202a833a83278c50 |
| MD5 hash: | f68ff9908921c8063858020d8c4f5f1b |
| humanhash: | burger-neptune-kitten-zebra |
| File name: | Trf 862930873.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 323'725 bytes |
| First seen: | 2021-10-08 02:40:11 UTC |
| Last seen: | 2021-10-08 03:46:47 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | b76363e9cb88bf9390860da8e50999d2 (464 x Formbook, 184 x AgentTesla, 122 x SnakeKeylogger) |
| ssdeep | 6144:n8LxBoEGD0GAM6IyvseLMEL0IQmEOTn9rugXfx6iU8pUchcPh:5hzCseAE0yugvxnU8uJZ |
| Threatray | 4'004 similar samples on MalwareBazaar |
| TLSH | T17D64E1A2F2C09CEEE57006715879EE7026ABBE4D8078640E919DB63D17731D710ABD1F |
| File icon (PE): |  |
| dhash icon | 131599362f0f376b (2 x OskiStealer, 1 x AgentTesla) |
| 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://21slg.xyz/6.jpg | https://threatfox.abuse.ch/ioc/231146/ |
| http://21slg.xyz/1.jpg | https://threatfox.abuse.ch/ioc/231147/ |
| http://21slg.xyz/2.jpg | https://threatfox.abuse.ch/ioc/231148/ |
| http://21slg.xyz/3.jpg | https://threatfox.abuse.ch/ioc/231149/ |
| http://21slg.xyz/4.jpg | https://threatfox.abuse.ch/ioc/231150/ |
| http://21slg.xyz/5.jpg | https://threatfox.abuse.ch/ioc/231151/ |
| http://21slg.xyz/7.jpg | https://threatfox.abuse.ch/ioc/231152/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Trf 862930873.exe
Verdict:
Malicious activity
Analysis date:
2021-10-08 02:41:37 UTC
Tags:
n/a
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a file in the %temp% directory
Creating a file
Unauthorized injection to a recently created process
Launching the default Windows debugger (dwwin.exe)
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
overlay packed
Malware family:
Oski Stealer
Verdict:
Malicious
Result
Threat name:
Oski Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for dropped file
Antivirus detection for URL or domain
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
Machine Learning detection for dropped file
Machine Learning detection for sample
Performs DNS queries to domains with low reputation
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.Backdoor.Zapchast
Status:
Malicious
First seen:
2021-10-08 02:41:11 UTC
File Type:
PE (Exe)
Extracted files:
3
AV detection:
21 of 28 (75.00%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 3'994 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: EnumeratesProcesses
Suspicious behavior: GetForegroundWindowSpam
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
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:
21slg.xyz
Unpacked files
SH256 hash:
4fdd785a78c5dfcecf40931ff10d7d1a9dfe36a0dc85e13e72ab0ef75230ee52
MD5 hash:
f68ff9908921c8063858020d8c4f5f1b
SHA1 hash:
5056a2ff7bad3ff23b6fa027202a833a83278c50
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.37
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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