MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 a9e2cff74c2afe7a6d87d7cb25bc41f044f8b492541729fb1503408b7ede6fa2. 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: 9
| SHA256 hash: | a9e2cff74c2afe7a6d87d7cb25bc41f044f8b492541729fb1503408b7ede6fa2 |
|---|---|
| SHA3-384 hash: | 8586b86d6686e6ee9d6baaaea0f61281906a0a8f0699a6602985fe71d492d6ed6e119f415c4bf816708a1a7ca99795e8 |
| SHA1 hash: | 6665087ac729b5c9dc9dc9e920513b07794fbce6 |
| MD5 hash: | 2756cff6b7da163940d5157bf9df7ece |
| humanhash: | monkey-thirteen-asparagus-pizza |
| File name: | purchase order acknowledgement.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 847'872 bytes |
| First seen: | 2021-05-01 01:05:22 UTC |
| Last seen: | 2021-05-03 13:02:21 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (49'221 x AgentTesla, 20'420 x Formbook, 12'370 x SnakeKeylogger) |
| ssdeep | 24576:tD+wjTUbwpGddqKFEIjxRxf7MjD8aY5imQaN5Y:aDEIjKj4ad |
| Threatray | 1'034 similar samples on MalwareBazaar |
| TLSH | A605CF6196408ADBDB7452399B12C43287F1AC9B7830F18D3DE83DA737FBB531626216 |
| 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://31.210.21.181/6.jpg | https://threatfox.abuse.ch/ioc/26671/ |
| http://31.210.21.181/1.jpg | https://threatfox.abuse.ch/ioc/26672/ |
| http://31.210.21.181/2.jpg | https://threatfox.abuse.ch/ioc/26673/ |
| http://31.210.21.181/3.jpg | https://threatfox.abuse.ch/ioc/26674/ |
| http://31.210.21.181/4.jpg | https://threatfox.abuse.ch/ioc/26675/ |
| http://31.210.21.181/5.jpg | https://threatfox.abuse.ch/ioc/26676/ |
| http://31.210.21.181/7.jpg | https://threatfox.abuse.ch/ioc/26677/ |
Intelligence
File Origin
# of uploads :
3
# of downloads :
314
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Vidar
Detection(s):
Result
Verdict:
Malware
Maliciousness:
Behaviour
Creating a window
DNS request
Sending a UDP request
Result
Threat name:
NanoCore Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Signature
C2 URLs / IPs found in malware configuration
Creates files in alternative data streams (ADS)
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Hides that the sample has been downloaded from the Internet (zone.identifier)
Initial sample is a PE file and has a suspicious name
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 submitted file
Posts data to a JPG file (protocol mismatch)
Sigma detected: NanoCore
Sigma detected: Scheduled temp file as task from temp location
Snort IDS alert for network traffic (e.g. based on Emerging Threat rules)
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
Uses schtasks.exe or at.exe to add and modify task schedules
Yara detected AntiVM3
Yara detected Nanocore RAT
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Status:
Malicious
First seen:
2021-05-01 01:06:10 UTC
AV detection:
13 of 47 (27.66%)
Threat level:
5/5
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'024 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
NTFS ADS
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
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Executes dropped EXE
Oski
Unpacked files
SH256 hash:
bdf79e57b5574f9bafb56f6d0592f5ee429df7eb0ad536fbdb4f2956aae36f87
MD5 hash:
826b29e2a141b055a5491c9d7dc6eea7
SHA1 hash:
af4201362b8603bf7e4b6e2ead1cfb610dd7c0a9
SH256 hash:
a9e2cff74c2afe7a6d87d7cb25bc41f044f8b492541729fb1503408b7ede6fa2
MD5 hash:
2756cff6b7da163940d5157bf9df7ece
SHA1 hash:
6665087ac729b5c9dc9dc9e920513b07794fbce6
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Suspicious File
Score:
0.56
File information
The table below shows additional information about this malware sample such as delivery method and external references.
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