MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 94a0cb554bd232ee588e462d2f9ff61431c3731457ed1ef505f1aeb171590551. 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: 14
| SHA256 hash: | 94a0cb554bd232ee588e462d2f9ff61431c3731457ed1ef505f1aeb171590551 |
|---|---|
| SHA3-384 hash: | 67ad852bb4e1afa1dcb915c2e007b96851ce4aa68ff9dfd11874c1973406a28b99800b84d0bcf1fa28506813b03dc719 |
| SHA1 hash: | ff5f57f7b682ab4db1297fcfc7c6e3a0af8faf46 |
| MD5 hash: | 74c5be89e64c87259146a6167ba3a5c9 |
| humanhash: | violet-violet-shade-nebraska |
| File name: | INV39765.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 653'498 bytes |
| First seen: | 2022-05-02 12:56:22 UTC |
| Last seen: | 2022-05-02 13:36:20 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'738 x AgentTesla, 19'596 x Formbook, 12'241 x SnakeKeylogger) |
| ssdeep | 12288:Ufk4zXW91M3mVyiKyrjppqKgDE+tOWCG7tn:KRB4ph+tBCGh |
| Threatray | 1'343 similar samples on MalwareBazaar |
| TLSH | T130D4ADE1354C9AE3CE76997306CF9E7113A346250122F7335B937BF2364261BEA27285 |
| TrID | 72.5% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13) 10.4% (.EXE) Win64 Executable (generic) (10523/12/4) 6.5% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2) 4.4% (.EXE) Win32 Executable (generic) (4505/5/1) 2.0% (.EXE) OS/2 Executable (generic) (2029/13) |
| Reporter |  James_inthe_box |
| Tags: | exe OskiStealer |
Intelligence
File Origin
# of uploads :
3
# of downloads :
260
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
vidar
ID:
1
File name:
INV39765.exe
Verdict:
Malicious activity
Analysis date:
2022-05-02 12:57:04 UTC
Tags:
trojan stealer vidar oski
Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Result
Verdict:
Malware
Maliciousness:
Behaviour
Searching for the window
Creating a window
Sending a custom TCP request
Сreating synchronization primitives
Creating a file in the %AppData% directory
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Unauthorized injection to a recently created process
Creating a file
DNS request
Sending an HTTP GET request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
5/10
Confidence:
100%
Tags:
obfuscated overlay packed
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:
Snake Keylogger
Verdict:
Malicious
Result
Threat name:
Oski Stealer
Detection:
malicious
Classification:
troj.evad
Score:
100 / 100
Signature
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
Found malware configuration
Injects a PE file into a foreign processes
Machine Learning detection for dropped file
Machine Learning detection for sample
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for domain / URL
Multi AV Scanner detection for dropped file
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)
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Oski Stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2022-05-02 12:56:11 UTC
File Type:
PE (.Net Exe)
Extracted files:
9
AV detection:
23 of 26 (88.46%)
Threat level:
5/5
Detection(s):
Suspicious file
Verdict:
malicious
Similar samples:
+ 1'333 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski infostealer spyware stealer suricata
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Checks computer location settings
Reads user/profile data of web browsers
Oski
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
alazlfa.cf
Unpacked files
SH256 hash:
101d608d893ed193835cd04b4d06a79960032fb703c5268e910dd4880c53a992
MD5 hash:
94ea010aa2b385b5ad3d8d71f7704a2e
SHA1 hash:
912c31ced158c7200deb830fc16f2d6aa7687e32
SH256 hash:
79823e47436e129def4fba8ee225347a05b7bb27477fb1cc8be6dc9e9ce75696
MD5 hash:
39f524c1ab0eb76dfd79b2852e5e8c39
SHA1 hash:
428018e1701006744e34480b0029982a76d8a57d
SH256 hash:
5ac2ceb8db09d1f8d518f39bae4e6a659beb8dbc5d3c65c718dad9aaf0b1113f
MD5 hash:
88c7b628eebff988698f9063227bba23
SHA1 hash:
0d12e94683416a016c93dda505e343fd6bef4d75
SH256 hash:
94a0cb554bd232ee588e462d2f9ff61431c3731457ed1ef505f1aeb171590551
MD5 hash:
74c5be89e64c87259146a6167ba3a5c9
SHA1 hash:
ff5f57f7b682ab4db1297fcfc7c6e3a0af8faf46
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: | 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.
Delivery method
Other
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