MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10. 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


Intelligence 11 IOCs 7 YARA 5 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10
SHA3-384 hash: bac0dcc8221ac0f20356c1a54a04a92635303ab53442114e0dff56f7bbaf8d7922f53c934b3fe21fb4a56b377e69b3ec
SHA1 hash: cba7f97fb75338262c97549608a653c155150813
MD5 hash: 379ab7eebd100778e2605df3c32da046
humanhash: fanta-may-sad-batman
File name:379ab7eebd100778e2605df3c32da046.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:609'280 bytes
First seen:2022-07-26 15:35:43 UTC
Last seen:2022-07-26 17:03:17 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'829 x AgentTesla, 19'759 x Formbook, 12'295 x SnakeKeylogger)
ssdeep 12288:3Ubjod8XX5e714XBmuhv41qGrE2/+UnapEoWVP:DYFxmuhA13v/+UnapDWVP
Threatray 962 similar samples on MalwareBazaar
TLSH T17AD4E08A63E21F06FE6F033776922A05D1F72F855C6093DDA4507C97B3BE1C990A18A7
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)
File icon (PE):PE icon
dhash icon 0c521252c9cce429 (1 x OskiStealer, 1 x Neshta, 1 x QuasarRAT)
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://quisha.axwebsite.com/6.jpg

Indicators Of Compromise (IOCs)

Below is a list of indicators of compromise (IOCs) associated with this malware samples.

IOCThreatFox Reference
http://quisha.axwebsite.com/6.jpg https://threatfox.abuse.ch/ioc/839688/
http://quisha.axwebsite.com/1.jpg https://threatfox.abuse.ch/ioc/839689/
http://quisha.axwebsite.com/2.jpg https://threatfox.abuse.ch/ioc/839690/
http://quisha.axwebsite.com/3.jpg https://threatfox.abuse.ch/ioc/839691/
http://quisha.axwebsite.com/4.jpg https://threatfox.abuse.ch/ioc/839692/
http://quisha.axwebsite.com/5.jpg https://threatfox.abuse.ch/ioc/839693/
http://quisha.axwebsite.com/7.jpg https://threatfox.abuse.ch/ioc/839694/

Intelligence

File Origin
# of uploads :
2
# of downloads :
297
Origin country :
n/a
Vendor Threat Intelligence
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/294373/
Detection(s):
SecuriteInfo.com.Trojan.Siggen18.26321.6208.20489.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
Sending a custom TCP request
Creating a file in the %AppData% subdirectories
Creating a file
DNS request
Searching for synchronization primitives
Launching the default Windows debugger (dwwin.exe)
Searching for the window
Enabling autorun with the standard Software\Microsoft\Windows\CurrentVersion\Run registry branch
Unauthorized injection to a system process
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
packed
Link:
https://www.filescan.io/uploads/62e009e7a2f481deb96aa779/reports/1b119121-9e5c-4568-b070-739fbc66ec89/overview
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
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/43201119-4b1c-45d7-ace0-cb69b3025a3c
Result
Threat name:
Oski Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/1041201
Signature
.NET source code contains potential unpacker
.NET source code contains very large array initializations
Allocates memory in foreign processes
Antivirus / Scanner detection for submitted sample
Antivirus detection for dropped file
Antivirus detection for URL or domain
C2 URLs / IPs found in malware configuration
DLL side loading technique detected
Encrypted powershell cmdline option found
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
Malicious sample detected (through community Yara rule)
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
Snort IDS alert for network traffic
Tries to harvest and steal browser information (history, passwords, etc)
Writes to foreign memory regions
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 673693 Sample: ObbBggVvQP.exe Startdate: 26/07/2022 Architecture: WINDOWS Score: 100 61 Snort IDS alert for network traffic 2->61 63 Malicious sample detected (through community Yara rule) 2->63 65 Antivirus detection for URL or domain 2->65 67 10 other signatures 2->67 7 ObbBggVvQP.exe 1 5 2->7         started        11 Hacsuj.exe 2 2->11         started        13 Hacsuj.exe 1 2->13         started        process3 file4 47 C:\Users\user\AppData\Roaming\...\Hacsuj.exe, PE32 7->47 dropped 49 C:\Users\user\...\Hacsuj.exe:Zone.Identifier, ASCII 7->49 dropped 51 C:\Users\user\AppData\...\ObbBggVvQP.exe.log, ASCII 7->51 dropped 69 Encrypted powershell cmdline option found 7->69 71 Writes to foreign memory regions 7->71 73 Allocates memory in foreign processes 7->73 15 InstallUtil.exe 28 7->15         started        20 powershell.exe 15 7->20         started        22 InstallUtil.exe 7->22         started        75 Antivirus detection for dropped file 11->75 77 Machine Learning detection for dropped file 11->77 79 Injects a PE file into a foreign processes 11->79 24 InstallUtil.exe 11->24         started        26 powershell.exe 11->26         started        28 InstallUtil.exe 13->28         started        30 powershell.exe 13->30         started        signatures5 process6 dnsIp7 55 quisha.axwebsite.com 144.76.115.36, 49756, 49760, 49775 HETZNER-ASDE Germany 15->55 45 C:\ProgramData\sqlite3.dll, HTML 15->45 dropped 32 WerFault.exe 23 9 15->32         started        34 conhost.exe 20->34         started        36 WerFault.exe 24->36         started        39 conhost.exe 26->39         started        57 Tries to harvest and steal browser information (history, passwords, etc) 28->57 59 DLL side loading technique detected 28->59 41 WerFault.exe 28->41         started        43 conhost.exe 30->43         started        file8 signatures9 process10 dnsIp11 53 192.168.2.1 unknown unknown 36->53
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10/
Threat name:
ByteCode-MSIL.Downloader.BitRAT
Create hunting rule
Status:
Malicious
First seen:
2022-07-26 15:36:10 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
29 of 40 (72.50%)
Threat level:
  3/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=bvua3osr3376arug2hpyzb66trwagehxayf7jt5qa6nc6jok54ia._file
Verdict:
malicious
Similar samples:
1b9c9b834da58ea5a48a29ecb1fa94be9745a48484417ff2caf6ed70f1a50cbd
OskiStealer
3e85b31ff1780031f94570fc9801b6a886564a4caa2acc360d2c65f29b22dbb5
OskiStealer
56592952894bf0d4b991d0bac813dab7d21517c5c0c79cce2faf8a50383cc3bf
OskiStealer
6a030cbd50b1fb5853776bf4993a232648eff575e3c4ccd131e891838f2de267
OskiStealer
8738509150857d74d2b7ce825078911b7c08e878269d5f870dd59131f0d7ec9a
OskiStealer
aa79b859945459fd6d1363c35e68c9d2674a78f1fdee02b8ddfab9a8fa011b48
OskiStealer
b330a1fe0dfe187f29da0964f4fc3fc5743cd339f2463e96b247fa7fd72c6c9e
OskiStealer
b7bf04a5d5d14c38358fb28f8e2453bf45926684769ad6a79a4bf110d8587af5
OskiStealer
c75b21d9f3189b648b2b83dae0fb48e49eb5458e8c3c5cfbdbcac460b43acc32
OskiStealer
f234a3861371763fb293ba38d6a5cc82b0af13ce03ba676d3a229c9f30fbd85d
OskiStealer
+ 952 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski infostealer persistence
Link:
https://tria.ge/reports/220726-s1wv3sbahp/
Behaviour
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Program crash
Suspicious use of SetThreadContext
Adds Run key to start application
Checks computer location settings
Oski
Malware Config
C2 Extraction:
quisha.axwebsite.com
Unpacked files
SH256 hash:
28582d257707d8afc5b1fd729a06216b5e5ff05bc3d25240ce5a555495963c03
MD5 hash:
dc1f686035cabf3a55680f44a089e6d6
SHA1 hash:
48538d22840fbff8f862b33f235924e994ecaff3
Link:
https://www.unpac.me/results/590b0a15-8331-4737-bdc6-6d676ed4e9c4/
SH256 hash:
0d680dba51deffe04686d1df8c87de9c6c0310f7060bf4cfb0079a2f25caef10
MD5 hash:
379ab7eebd100778e2605df3c32da046
SHA1 hash:
cba7f97fb75338262c97549608a653c155150813
Link:
https://www.unpac.me/results/590b0a15-8331-4737-bdc6-6d676ed4e9c4/
Please note that we are no longer able to provide a coverage score for Virus Total.

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
Create hunting rule
Author:ditekSHen
Description:Detects Vidar / ArkeiStealer
Rule name:pe_imphash
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash
Rule name:Vidar
Create hunting rule
Author:kevoreilly
Description:Vidar Payload
Rule name:win_oski_auto
Create hunting rule
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.

Cape
Cape
https://www.capesandbox.com/analysis/294373/

Comments