MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 89eb1caa50dfc398890c3490fef1d34527dd8505de3d770bb6ae7032ae22fd1f. 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: | 89eb1caa50dfc398890c3490fef1d34527dd8505de3d770bb6ae7032ae22fd1f |
|---|---|
| SHA3-384 hash: | bdcad94ca667655511809dd8a0d93e06d8616f278c2f7c567edc59de752a61b56b2252537bbd044e3b5b0645ec57e0f6 |
| SHA1 hash: | 0004689b4953642eddc67235f8ce294c2dfd7d1f |
| MD5 hash: | 1c1b93412ab9925460ee78ebf5c76a15 |
| humanhash: | ack-red-uncle-don |
| File name: | 1c1b93412ab9925460ee78ebf5c76a15 |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 516'096 bytes |
| First seen: | 2021-06-30 08:58:11 UTC |
| Last seen: | 2021-06-30 09:50:25 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:W/EFVzMFHxVPjpkvdMmokNyu0L64MXYijL8DP:WEaHeVKkIu0L64MXvcP |
| Threatray | 1'606 similar samples on MalwareBazaar |
| TLSH | DAB4E06231489AB7F2131CBA4C1ED2B115ABBD245019E95C75AA334F19F232253EFB1F |
| Reporter |  zbetcheckin |
| Tags: | 32 exe OskiStealer |
Indicators Of Compromise (IOCs)
Below is a list of indicators of compromise (IOCs) associated with this malware samples.
| IOC | ThreatFox Reference |
|---|---|
| http://195.133.40.227/az//6.jpg | https://threatfox.abuse.ch/ioc/156122/ |
| http://195.133.40.227/az//1.jpg | https://threatfox.abuse.ch/ioc/156123/ |
| http://195.133.40.227/az//7.jpg | https://threatfox.abuse.ch/ioc/156124/ |
| http://195.133.40.227/az//2.jpg | https://threatfox.abuse.ch/ioc/156125/ |
| http://195.133.40.227/az//3.jpg | https://threatfox.abuse.ch/ioc/156126/ |
| http://195.133.40.227/az//4.jpg | https://threatfox.abuse.ch/ioc/156127/ |
| http://195.133.40.227/az//5.jpg | https://threatfox.abuse.ch/ioc/156128/ |
Intelligence
File Origin
# of uploads :
2
# of downloads :
138
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
372955591DX.xll
Verdict:
Malicious activity
Analysis date:
2021-06-30 07:52:19 UTC
Tags:
opendir loader trojan stealer vidar
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
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
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
Multi AV Scanner detection for submitted file
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
Writes to foreign memory regions
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.Bulz
Status:
Malicious
First seen:
2021-06-30 08:59:08 UTC
AV detection:
13 of 46 (28.26%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'596 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 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
Malware Config
C2 Extraction:
195.133.40.227/az/
Unpacked files
SH256 hash:
ed58be7eaabf9d33faf49ad967b2b044b0995773eaf33256c71b34cd41912f20
MD5 hash:
b1c14b94eea6bf154fa58b2221715216
SHA1 hash:
8f6fa9e0cf11d2db849ed9f1b345f4597fd41606
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
9f08d4ebeddae111f22e80069ed0c49d4715f4725448cb245c758572dfa38493
MD5 hash:
9510e6e48abe4731288de372f356a61b
SHA1 hash:
336b3806c66564307a400b17358daf9c96ee8f37
SH256 hash:
781ca0e833a2c3990b2261bd35c06f11b10d7d09157bdbd818f0364abe3baf7d
MD5 hash:
6288611ebc2366d6a4d107d835aad465
SHA1 hash:
0ae2384af7a9021c655ee6210a11b041cfc899b9
SH256 hash:
89eb1caa50dfc398890c3490fef1d34527dd8505de3d770bb6ae7032ae22fd1f
MD5 hash:
1c1b93412ab9925460ee78ebf5c76a15
SHA1 hash:
0004689b4953642eddc67235f8ce294c2dfd7d1f
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: | INDICATOR_SUSPICIOUS_Stomped_PECompilation_Timestamp_InTheFu |
|---|---|
| Author: | ditekSHen |
| Description: | Detect executables with stomped PE compilation timestamp that is greater than local current time |
| 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: | autogenerated rule brought to you by yara-signator |
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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