MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 85b04366a901afa7df0d75f192032dccaee58e83827d7bd71674e202043d4f90. 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: 12
| SHA256 hash: | 85b04366a901afa7df0d75f192032dccaee58e83827d7bd71674e202043d4f90 |
|---|---|
| SHA3-384 hash: | 2eb9ad387ba72d3a290fe31d15ba9675072c85610a658693ed0194457aff6cf471a0708e6f17ed18353e5cd23c6ac29a |
| SHA1 hash: | df946045c50b64ec46c5964d3f3fe53dc17a3832 |
| MD5 hash: | 6ae3b362c05a0d47368dbe6e8512c01f |
| humanhash: | pizza-chicken-beryllium-indigo |
| File name: | 6ae3b362c05a0d47368dbe6e8512c01f.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 647'168 bytes |
| First seen: | 2022-05-23 07:05:54 UTC |
| Last seen: | 2022-05-23 07:40:55 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:PpA+k2cthiAD/k+QjyYCnOq3SclzTMfh34QoP+ob6Vqxzs+F3Wva:jtctDFQjtCnO+lXMpo9XsN |
| Threatray | 4'406 similar samples on MalwareBazaar |
| TLSH | T112D41260395C9FAACC6E4779DC6962DC13F04E02AD12E35BDFD9B1DEA932380C81255B |
| TrID | 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 11.3% (.SCR) Windows screen saver (13101/52/3) 9.0% (.EXE) Win64 Executable (generic) (10523/12/4) 5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 3.8% (.EXE) Win32 Executable (generic) (4505/5/1) |
| File icon (PE): |  |
| dhash icon | 688e33f0e8e071b2 (10 x AgentTesla, 8 x Formbook, 7 x SnakeKeylogger) |
| 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://tvscreen.co.vu/6.jpg | https://threatfox.abuse.ch/ioc/627209/ |
| http://tvscreen.co.vu/1.jpg | https://threatfox.abuse.ch/ioc/627210/ |
| http://tvscreen.co.vu/2.jpg | https://threatfox.abuse.ch/ioc/627211/ |
| http://tvscreen.co.vu/3.jpg | https://threatfox.abuse.ch/ioc/627212/ |
| http://tvscreen.co.vu/4.jpg | https://threatfox.abuse.ch/ioc/627213/ |
| http://tvscreen.co.vu/5.jpg | https://threatfox.abuse.ch/ioc/627214/ |
| http://tvscreen.co.vu/7.jpg | https://threatfox.abuse.ch/ioc/627215/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
261
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
vidar
ID:
1
File name:
6ae3b362c05a0d47368dbe6e8512c01f.exe
Verdict:
Malicious activity
Analysis date:
2022-05-23 07:07:09 UTC
Tags:
trojan stealer vidar loader
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Creating a file
Verdict:
Malicious
Threat level:
10/10
Confidence:
100%
Tags:
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 Stealer
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
.NET source code contains potential unpacker
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
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
Yara detected AntiVM3
Yara detected Oski Stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-05-23 07:06:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
8
AV detection:
19 of 26 (73.08%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 4'396 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
Checks computer location settings
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 Suspicious Zipped Filename in Outbound POST Request (Passwords.txt) M2
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
tvscreen.co.vu
Unpacked files
SH256 hash:
0d5c224779d203043f9da25c6dcb8398b775e93703cecf1b6375d44a88d7adac
MD5 hash:
c4d44c9685847edfa12a4742482723bb
SHA1 hash:
d15a85270adf5059bfe3a189406520757657b505
SH256 hash:
fdd10fb67e6276b3d848c92d4686f56b2ecbea1d629795a241ca6306a2f62d55
MD5 hash:
f20fd214bbda1a459a3eb415eec86017
SHA1 hash:
c658f61e4f308a69a4509649439814166c655e84
SH256 hash:
4615b879a8d37c733de2ecde5671df91cfb918037af39dc50fc45e2b40a512c9
MD5 hash:
ba1c4b8afb07bce9cdda005c8aa961f3
SHA1 hash:
a4d492ab07d2e19e10000f99e212cfe50d6d4139
SH256 hash:
84cf69f3dd45b2f9e6249222e050c647d839e5f0592b505537da997d24551bf6
MD5 hash:
737a8ac62307679c1bafc32e08b1bd6c
SHA1 hash:
68468db3347561f505b077937e3bc70b57dd3c82
SH256 hash:
5f79d8b10712475ad791625767c083eed1cc2934a47f0b9bdf91e235be4b959c
MD5 hash:
d11ddc37c77db7c4fa35759e8cbe1554
SHA1 hash:
091bc361f4a48d1962ce7d1e3517afe611fabec3
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
85b04366a901afa7df0d75f192032dccaee58e83827d7bd71674e202043d4f90
MD5 hash:
6ae3b362c05a0d47368dbe6e8512c01f
SHA1 hash:
df946045c50b64ec46c5964d3f3fe53dc17a3832
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: | 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.
Web download
Delivery method
Distributed via web download
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