MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 d83a8f3a3475132ef153741a21858652a2f03a4e62d56f6864c8800fb0a0da45. 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: | d83a8f3a3475132ef153741a21858652a2f03a4e62d56f6864c8800fb0a0da45 |
|---|---|
| SHA3-384 hash: | b0b6cdde71a45897f1d5bcbdb973e076db60194cc73a37e32d4f1142cec6835bdf6bbedc43a488ebeac5610488fbb33b |
| SHA1 hash: | 913f51d9deee32c6953a3ce9fbe04dd85f4c78f1 |
| MD5 hash: | e480e28c74a635845673fd030eb47734 |
| humanhash: | comet-romeo-music-paris |
| File name: | e480e28c74a635845673fd030eb47734.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 275'214 bytes |
| First seen: | 2021-07-30 14:45:44 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | 47a24eb087bd2cccbffba4143950f63a (1 x Formbook, 1 x OskiStealer) |
| ssdeep | 6144:mU2ggwQt/uqv8uLjPMRnuCKc8E46U+mxHYQsl4DrNr1Hzkmct/036YFTKT:mU1HKc8EnIN5ssrNrumcS36Y6 |
| Threatray | 2'257 similar samples on MalwareBazaar |
| TLSH | T11644F18CBB3ED350F651C5BC7892FB9E60043635106F44B7B7897F949CA02864E2AE27 |
| dhash icon | 07f0d496d2d8f007 (1 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://nedu1994.xyz/6.jpg | https://threatfox.abuse.ch/ioc/164842/ |
| http://nedu1994.xyz/1.jpg | https://threatfox.abuse.ch/ioc/164843/ |
| http://nedu1994.xyz/2.jpg | https://threatfox.abuse.ch/ioc/164844/ |
| http://nedu1994.xyz/3.jpg | https://threatfox.abuse.ch/ioc/164845/ |
| http://nedu1994.xyz/4.jpg | https://threatfox.abuse.ch/ioc/164846/ |
| http://nedu1994.xyz/5.jpg | https://threatfox.abuse.ch/ioc/164847/ |
| http://nedu1994.xyz/7.jpg | https://threatfox.abuse.ch/ioc/164848/ |
Intelligence
File Origin
# of uploads :
1
# of downloads :
572
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Vidar
Detection(s):
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 Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
Antivirus detection for URL or domain
Detected unpacking (changes PE section rights)
Detected unpacking (overwrites its own PE header)
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for sample
Maps a DLL or memory area into another process
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for submitted file
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.Trojan.Chapak
Status:
Malicious
First seen:
2021-07-23 10:28:39 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 2'247 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 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
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:
nedu1994.xyz
Unpacked files
SH256 hash:
d950b81ccf66236617d76cf89ec2e026434597a939029bc8297c9921a92b3458
MD5 hash:
7fa1ee8008b1746abaf2baa80008aa05
SHA1 hash:
262fea0a5621a0b7476ca700a86e1ce5c862d42c
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
d83a8f3a3475132ef153741a21858652a2f03a4e62d56f6864c8800fb0a0da45
MD5 hash:
e480e28c74a635845673fd030eb47734
SHA1 hash:
913f51d9deee32c6953a3ce9fbe04dd85f4c78f1
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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