MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 fb142a5509971d78923e077c658479a60287c1e6d921adfc75f3a426b5ffab7b. 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: 13
| SHA256 hash: | fb142a5509971d78923e077c658479a60287c1e6d921adfc75f3a426b5ffab7b |
|---|---|
| SHA3-384 hash: | e7a3e6c62619d847e0cbbb55b5d8f332e6c1e56f8af25adc90cc18f8be05dcd020cfbd210b3a91564800ddb732329ea2 |
| SHA1 hash: | 5170e8e2ed34155c184d287e00295c2a73d0272d |
| MD5 hash: | 4cb8959e4b5ce5d468c50344c77bc98a |
| humanhash: | johnny-utah-asparagus-north |
| File name: | 4cb8959e4b5ce5d468c50344c77bc98a.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 1'174'528 bytes |
| First seen: | 2021-12-15 02:11:43 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'657 x AgentTesla, 19'468 x Formbook, 12'207 x SnakeKeylogger) |
| ssdeep | 24576:DNvRuAde9PZLODBq014IsUilECActclr1T2GG:DNvRyxUwysUr/c4Z2GG |
| Threatray | 4'060 similar samples on MalwareBazaar |
| TLSH | T19C4502193F98EF20D67D4FBBC8E9A01E83BCF9476581CA299DCE51D82C127C199015EB |
| File icon (PE): |  |
| dhash icon | b3b3333969693b3b (69 x Formbook, 63 x AgentTesla, 26 x Loki) |
| 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://golfhomexpresx.ir/6.jpg | https://threatfox.abuse.ch/ioc/275533/ |
| http://golfhomexpresx.ir/1.jpg | https://threatfox.abuse.ch/ioc/275534/ |
| http://golfhomexpresx.ir/2.jpg | https://threatfox.abuse.ch/ioc/275535/ |
| http://golfhomexpresx.ir/3.jpg | https://threatfox.abuse.ch/ioc/275536/ |
| http://golfhomexpresx.ir/4.jpg | https://threatfox.abuse.ch/ioc/275537/ |
| http://golfhomexpresx.ir/5.jpg | https://threatfox.abuse.ch/ioc/275538/ |
| http://golfhomexpresx.ir/7.jpg | https://threatfox.abuse.ch/ioc/275539/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
187
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
4cb8959e4b5ce5d468c50344c77bc98a.exe
Verdict:
Malicious activity
Analysis date:
2021-12-15 02:14:49 UTC
Tags:
trojan stealer vidar 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
Creating a window
DNS request
Creating a file
Verdict:
Likely Malicious
Threat level:
7.5/10
Confidence:
100%
Tags:
hacktool obfuscated packed
Result
Verdict:
UNKNOWN
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 Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Antivirus / Scanner detection for submitted sample
C2 URLs / IPs found in malware configuration
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
Posts data to a JPG file (protocol mismatch)
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
Yara detected AntiVM3
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-12-15 02:12:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
22 of 28 (78.57%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 4'050 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski discovery infostealer spyware stealer suricata
Behaviour
Checks processor information in registry
Kills process with taskkill
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
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
Malware Config
C2 Extraction:
golfhomexpresx.ir
Unpacked files
SH256 hash:
f8ee3ec61da05401295cfc650a604dc644a16a8d7afc9f090cd9f7a0d9300317
MD5 hash:
7e9f1e09d0aa634d949c26737c26ff3c
SHA1 hash:
cb6b35efc98d0656148907ce56268a964556664d
SH256 hash:
4d68738af09e04d4decc13fa1c946bf85324a9631fab1d424b4b5caad79e8a5e
MD5 hash:
ef1071924e7524fac10c23dce60e6ae1
SHA1 hash:
13b997a0beb38c4e186a8887a7b59ea171ca750d
SH256 hash:
58ffaa98ea23de16e10355dbf4d7bbce13b45b16102da499b003fd707b4eb5ba
MD5 hash:
5e0f5cdbc6104a979cc92ba293b3b1c9
SHA1 hash:
124a5d02b50da7caa078d4cae6d7ad455a7a2e26
Detections:
win_oski_g0
win_oski_auto
Parent samples :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 hash:
fb142a5509971d78923e077c658479a60287c1e6d921adfc75f3a426b5ffab7b
MD5 hash:
4cb8959e4b5ce5d468c50344c77bc98a
SHA1 hash:
5170e8e2ed34155c184d287e00295c2a73d0272d
Verdict:
Malicious
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: | pe_imphash |
|---|
| 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.
Web download
Delivery method
Distributed via web download
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