MalwareBazaar Database
You are currently viewing the MalwareBazaar entry for SHA256 76a5f8550442958458b6bdb42625ceda1380548e9bcd8200e584f3c486de96ed. 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: 7
| SHA256 hash: | 76a5f8550442958458b6bdb42625ceda1380548e9bcd8200e584f3c486de96ed |
|---|---|
| SHA3-384 hash: | d91ad2461ee708d40a903b16e98310edb6ac32c8bb01de9e75f548a77c4e010fe1032ce371d7b650ba2443314623f51b |
| SHA1 hash: | aa245d1997245202283006a6a6f3399f26cf98c4 |
| MD5 hash: | 43fb35807a4860d1942911b14637b222 |
| humanhash: | cold-virginia-nitrogen-lake |
| File name: | PL025173069.exe |
| Download: | download sample |
| Signature | OskiStealer |
| File size: | 755'512 bytes |
| First seen: | 2021-05-06 06:15:55 UTC |
| Last seen: | 2021-05-06 07:22:11 UTC |
| File type: |  exe |
| MIME type: | application/x-dosexec |
| imphash | f34d5f2d4577ed6d9ceec516c1f5a744 (48'661 x AgentTesla, 19'474 x Formbook, 12'208 x SnakeKeylogger) |
| ssdeep | 12288:Bog1fxhwL8mLAHefRIZtbVqrTwqEZzTVGeeeAItC66rCWmzG:+oZyJAH/ZtxqEZzTV+9I0/0 |
| Threatray | 1'112 similar samples on MalwareBazaar |
| TLSH | 0DF47D0017E85B97C2AE0379E198E23573F5DE05A29AAB8B690BF9F53F7339145009D3 |
| 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://209.141.40.19/6.jpg | https://threatfox.abuse.ch/ioc/30103/ |
| http://209.141.40.19/1.jpg | https://threatfox.abuse.ch/ioc/30104/ |
| http://209.141.40.19/2.jpg | https://threatfox.abuse.ch/ioc/30105/ |
| http://209.141.40.19/3.jpg | https://threatfox.abuse.ch/ioc/30106/ |
| http://209.141.40.19/4.jpg | https://threatfox.abuse.ch/ioc/30107/ |
| http://209.141.40.19/5.jpg | https://threatfox.abuse.ch/ioc/30108/ |
| http://209.141.40.19/7.jpg | https://threatfox.abuse.ch/ioc/30109/ |
Intelligence
File Origin
# of uploads :
3
# of downloads :
111
Origin country :
n/a
Vendor Threat Intelligence
Detection:
n/a
Detection(s):
Result
Verdict:
Clean
Maliciousness:
Behaviour
Creating a window
Sending a UDP request
DNS request
Sending an HTTP GET request
Creating a file
Deleting a recently created file
Replacing files
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.
Result
Threat name:
Vidar
Detection:
malicious
Classification:
troj.spyw.evad
Score:
92 / 100
Signature
.NET source code contains potential unpacker
Creates an undocumented autostart registry key
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
Found many strings related to Crypto-Wallets (likely being stolen)
Machine Learning detection for dropped file
Machine Learning detection for sample
Posts data to a JPG file (protocol mismatch)
Tries to harvest and steal browser information (history, passwords, etc)
Tries to steal Crypto Currency Wallets
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Detection(s):
Malicious file
Verdict:
malicious
Similar samples:
+ 1'102 additional samples on MalwareBazaar
Result
Malware family:
oski
Score:
10/10
Tags:
family:oski discovery infostealer spyware stealer
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Checks processor information in registry
Kills process with taskkill
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
Unpacked files
SH256 hash:
34bbea772d6bc2ffb6ff879346cf025379e6b65a7e76dcb94dbe61dc588ba9fa
MD5 hash:
a12bff5e88ef00d440dc169760b797d5
SHA1 hash:
fd4f32f1a3c5f9efc34ed101661f732cfac814b0
SH256 hash:
c27e09112c0c543b5f0876347765a374d0a7c89fe6f8d490013d07d8b68753c1
MD5 hash:
bb43c9f517c5d01bf0a3205f08cdd493
SHA1 hash:
51ab35727f745c63a6b0d802712768983316503d
Detections:
win_oski_g0
win_oski_auto
SH256 hash:
1e560b0ac430d34578422ea5623c289dd996f51ea12cecb339d2bfe1dff8a8a5
MD5 hash:
4a094c7c85059e4e65102ac39729c4ea
SHA1 hash:
0c89b25e36613369df51ce838f434ae5e19952dc
SH256 hash:
76a5f8550442958458b6bdb42625ceda1380548e9bcd8200e584f3c486de96ed
MD5 hash:
43fb35807a4860d1942911b14637b222
SHA1 hash:
aa245d1997245202283006a6a6f3399f26cf98c4
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Legit
Score:
0.00
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: | dsc |
|---|---|
| Author: | Aaron DeVera |
| Description: | Discord domains |
| Rule name: | INDICATOR_KB_CERT_04f131322cc31d92c849fca351d2f141 |
|---|---|
| Author: | ditekSHen |
| Description: | Detects executables signed with stolen, revoked or invalid certificates |
| 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: | Ping_Del_method_bin_mem |
|---|---|
| Author: | James_inthe_box |
| Description: | cmd ping IP nul del |
| 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.
Comments
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MBC behaviors list (github.com/accidentalrebel/mbcscan):
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0) [B0023] Execution::Install Additional Program