MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 652ff7f52f0e2d6bdd5a0f36f4b24c4dafc8aab7d5236db91b77267650cdb140. 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: | 652ff7f52f0e2d6bdd5a0f36f4b24c4dafc8aab7d5236db91b77267650cdb140 |
|---|---|
| SHA3-384 hash: | a77ee30aa69239a5b71cc9ac9a1de47fb7a38211b0321a7d67e998c681ff27bc9b4db8c6f50542ea561193f35bfa5e05 |
| SHA1 hash: | 3bf2631dd0877733ec2a005b7de033bb468fb2ca |
| MD5 hash: | 958327f65e87da599ad05ad82897f730 |
| humanhash: | dakota-wolfram-hamper-friend |
| File name: | 958327f65e87da599ad05ad82897f730.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 611'328 bytes |
| First seen: | 2021-10-11 14:03:29 UTC |
| Last seen: | Never |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'204 x SnakeKeylogger) |
| ssdeep | 12288:ShvSUOwrXUH/l+O+Z2HNdjIde1148gsGBMvo0:6KU7Efl+O+Z2HN31m8NG2w |
| Threatray | 3'933 similar samples on MalwareBazaar |
| TLSH | T19AD4AF2039EE515AF273AF762ED1B69DAF6EBFB22503900D1151734B0632A81CDE153B |
| Reporter |  abuse_ch |
| Tags: | exe OskiStealer |
Intelligence
File Origin
# of uploads :
1
# of downloads :
213
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
SZIJ791077 Brazil.xlsx
Verdict:
Malicious activity
Analysis date:
2021-10-11 07:25:20 UTC
Tags:
encrypted trojan opendir exploit CVE-2017-11882 loader stealer vidar phishing
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated packed
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
.NET source code contains very large strings
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
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 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:
2021-10-11 07:59:04 UTC
AV detection:
19 of 28 (67.86%)
Threat level:
5/5
Verdict:
malicious
Similar samples:
+ 3'923 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:
chrisproperties.xyz
Unpacked files
SH256 hash:
d434e7cb4105d7e760a39a1a8a1306338b00fbd6507025d53e4c44ede73d3788
MD5 hash:
6613b992e916924c3f38a179bb9866ab
SHA1 hash:
cd5741f4d0a4685c5fd9c9e2e708bbf33ec1691a
SH256 hash:
72c8b64f3b33d3b930876f7b69c0af6e0f7312222f86893cbb8a35c398ba1f93
MD5 hash:
eb4f71c50016dd13a3f132b5a7a0ea15
SHA1 hash:
6a587b92edb6d4b62220ef628eed84c033dfbb0c
SH256 hash:
00b9621e080a99aa0219c3a636e85fdc2ded9a2fa63bb80502b27aaa084e406a
MD5 hash:
7e1d956806587ab34f28ddbdd94e068f
SHA1 hash:
1e80dd0dceaf84bb9c33766239a12137d43705f7
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
652ff7f52f0e2d6bdd5a0f36f4b24c4dafc8aab7d5236db91b77267650cdb140
MD5 hash:
958327f65e87da599ad05ad82897f730
SHA1 hash:
3bf2631dd0877733ec2a005b7de033bb468fb2ca
Verdict:
Malicious
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
vidar
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: | 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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