MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9. 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


Intelligence 14 IOCs 7 YARA 2 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9
SHA3-384 hash: 7f31775fc8baa1f964fba53040ec5735b65f882e1f79e49d9da81ef04d9e431afe79199b20cd03145a9e934b645fe94f
SHA1 hash: d2c6ca114d462a259573b4ad23a053b53f2bcdaa
MD5 hash: 2d204abdf1430a77271041c926b1ec5b
humanhash: seven-green-johnny-wisconsin
File name:2d204abdf1430a77271041c926b1ec5b.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:698'880 bytes
First seen:2022-05-16 20:12:20 UTC
Last seen:2022-05-16 20:40:44 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'666 x AgentTesla, 19'479 x Formbook, 12'209 x SnakeKeylogger)
ssdeep 12288:lCxMpMpg3P+YjC0spXWrZd40PL4gFOar/RUyKKX19Fqp:Tq41C0spXWrZLnkiRDzF9Fq
Threatray 4'107 similar samples on MalwareBazaar
TLSH T166E40228BFA5DD12D1BE2F3BD0FA20244BB5BE899133D72F569816090E0339B4E55367
TrID 63.0% (.EXE) Generic CIL Executable (.NET, Mono, etc.) (73123/4/13)
11.3% (.SCR) Windows screen saver (13101/52/3)
9.0% (.EXE) Win64 Executable (generic) (10523/12/4)
5.6% (.DLL) Win32 Dynamic Link Library (generic) (6578/25/2)
3.8% (.EXE) Win32 Executable (generic) (4505/5/1)
File icon (PE):PE icon
dhash icon e0d2e25945ba9cf0 (15 x AgentTesla, 9 x Formbook, 7 x Loki)
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://unitech.co.vu/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://unitech.co.vu/6.jpg https://threatfox.abuse.ch/ioc/574605/
http://unitech.co.vu/1.jpg https://threatfox.abuse.ch/ioc/574606/
http://unitech.co.vu/2.jpg https://threatfox.abuse.ch/ioc/574607/
http://unitech.co.vu/3.jpg https://threatfox.abuse.ch/ioc/574609/
http://unitech.co.vu/4.jpg https://threatfox.abuse.ch/ioc/574610/
http://unitech.co.vu/5.jpg https://threatfox.abuse.ch/ioc/574611/
http://unitech.co.vu/7.jpg https://threatfox.abuse.ch/ioc/574612/

Intelligence

File Origin
# of uploads :
2
# of downloads :
264
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
vidar
Create hunting rule
ID:
1
File name:
2d204abdf1430a77271041c926b1ec5b.exe
Verdict:
Malicious activity
Analysis date:
2022-05-16 20:23:54 UTC
Tags:
trojan stealer vidar loader
Link:
https://app.any.run/tasks/1620faa1-9bd7-4707-a8b5-5a118518e82f

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
Vidar
Create hunting rule
Link:
https://www.capesandbox.com/analysis/271291/
Result
Verdict:
Clean
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a process with a hidden window
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
control.exe obfuscated packed
Link:
https://www.filescan.io/uploads/6282b06c22b733139c21f70d/reports/d88b3239-8c1e-4948-9ef3-bdb173cba508/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:
Formbook
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/deb290a8-ba42-4b4d-b70b-accd9954e979
Result
Threat name:
Oski Stealer, Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/995362
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
C2 URLs / IPs found in malware configuration
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
Malicious sample detected (through community Yara rule)
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)
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 Generic Downloader
Yara detected Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 627858 Sample: 6JUwUwe5iz.exe Startdate: 16/05/2022 Architecture: WINDOWS Score: 100 55 Snort IDS alert for network traffic 2->55 57 Found malware configuration 2->57 59 Malicious sample detected (through community Yara rule) 2->59 61 14 other signatures 2->61 8 6JUwUwe5iz.exe 7 2->8         started        process3 file4 33 C:\Users\user\AppData\...\nqCHwclxyry.exe, PE32 8->33 dropped 35 C:\Users\...\nqCHwclxyry.exe:Zone.Identifier, ASCII 8->35 dropped 37 C:\Users\user\AppData\Local\...\tmp8C09.tmp, XML 8->37 dropped 39 C:\Users\user\AppData\...\6JUwUwe5iz.exe.log, ASCII 8->39 dropped 63 Uses schtasks.exe or at.exe to add and modify task schedules 8->63 65 Adds a directory exclusion to Windows Defender 8->65 12 6JUwUwe5iz.exe 196 8->12         started        17 powershell.exe 25 8->17         started        19 schtasks.exe 1 8->19         started        21 3 other processes 8->21 signatures5 process6 dnsIp7 49 chibuzorbaby.com 142.4.0.135, 49760, 49766, 80 UNIFIEDLAYER-AS-1US United States 12->49 51 unitech.co.vu 12->51 41 C:\ProgramData\vcruntime140.dll, PE32 12->41 dropped 43 C:\ProgramData\sqlite3.dll, PE32 12->43 dropped 45 C:\ProgramData\softokn3.dll, PE32 12->45 dropped 47 4 other files (none is malicious) 12->47 dropped 67 Tries to harvest and steal browser information (history, passwords, etc) 12->67 69 Tries to steal Crypto Currency Wallets 12->69 23 cmd.exe 12->23         started        25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        53 192.168.2.1 unknown unknown 21->53 file8 signatures9 process10 process11 29 conhost.exe 23->29         started        31 taskkill.exe 23->31         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9/
Threat name:
ByteCode-MSIL.Trojan.AveMariaRAT
Create hunting rule
Status:
Malicious
First seen:
2022-05-11 08:15:19 UTC
File Type:
PE (.Net Exe)
Extracted files:
13
AV detection:
17 of 41 (41.46%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=aptsouz3fsuo2dorarcm47uv54mtgqje7mybj6yja6clenyzk64q._file
Verdict:
malicious
Similar samples:
11810610b0fcbfe0edc318d79ede6dcbb2c4b34dccbace91d3775001187c3c96
OskiStealer
14a2149ffb9dc7a2bfa96e92ee4d7052222d5550431ffebc471b31859b397024
OskiStealer
1c53cbedc20ce9cf5b5e69fac6211133faa197f85b214a865f71cf4e0879dd99
OskiStealer
48d338ba06ada3da080eeeddb8a267b1b677dc9c3670f13e333ec8c73ff1b02c
OskiStealer
6107e3ec5898ce2f80b04ee16b3a41107a0733339cded01cf8c5ade5fc105472
OskiStealer
aec9eb81f2a2837488165119d41da8eec94607b9bde0b729f811ced008ad95cb
OskiStealer
fe95cc4e2a9b6b982ed729023b0cd706ecb5047eb75869e4dcbef57a93757493
OskiStealer
+ 4'097 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski infostealer spyware stealer suricata
Link:
https://tria.ge/reports/220516-yzdwrsaccl/
Behaviour
Creates scheduled task(s)
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
Enumerates physical storage devices
Suspicious use of SetThreadContext
Checks computer location settings
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer HTTP POST Pattern
Malware Config
C2 Extraction:
unitech.co.vu
Unpacked files
SH256 hash:
c206122a7336385be557580c114ac0923192f61bc8f77aa58c898135438399f9
MD5 hash:
6c9e813248a01432890c476813d210b8
SHA1 hash:
fd54aa3af58fc3a88cb3fd6753d773cd6c51b7f8
Link:
https://www.unpac.me/results/b44af795-26d1-4ac9-b228-0bafa6a4baf1/
SH256 hash:
3dab55bd31bfc557c9203d6e400b04564d35533f4b12266cb7c4dd36c824106c
MD5 hash:
e0636d0c0fa1b16da0a4e07a8ae6d91d
SHA1 hash:
92f90dd4d503ce44ca72a05dcae97b6b17f9410c
Link:
https://www.unpac.me/results/b44af795-26d1-4ac9-b228-0bafa6a4baf1/
SH256 hash:
264049c13e7046e857ce0bdb0e7ec128e44ee1359b4c1e8799bd22b1590efb3f
MD5 hash:
ed58959693b3ef469ca332631d590265
SHA1 hash:
3ddac476a7972315137cb4d3afaf916c1aab1515
Link:
https://www.unpac.me/results/b44af795-26d1-4ac9-b228-0bafa6a4baf1/
SH256 hash:
29c14233e9f39489fb1ea7a21c39c916059f2532ea8b1c015f00c84624409576
MD5 hash:
a6071f6bec8bb24bdf9d4275b6587d0e
SHA1 hash:
01c4909c79daa8fe1f47a4a501900354a40c5f90
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/b44af795-26d1-4ac9-b228-0bafa6a4baf1/
Parent samples :
03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9
35f377ad1b6647c04b0967c7825c96360fe035ae7b0fac43380a1cccc8969d85
95e67dec1a50e9a83fbb5b430c1b21b851e1f0aa8da0ee9efbece3085ad4c462
5b934219ee24cde16acffda6640ac940cfd7f6bdcb93aad90919c89e84343727
b990b5f072914cba8f10f88932ce5be9feff9760f7a1a20d562f885915ca9423
cd238eae8acd5aaece92a1c264437fedea2fd7088df8353d81cdfd6af037e69b
SH256 hash:
03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9
MD5 hash:
2d204abdf1430a77271041c926b1ec5b
SHA1 hash:
d2c6ca114d462a259573b4ad23a053b53f2bcdaa
Link:
https://www.unpac.me/results/b44af795-26d1-4ac9-b228-0bafa6a4baf1/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/_mb/03e727533b2c/report/overview.html
Please note that we are no longer able to provide a coverage score for Virus Total.
Threat name:
Malicious File
Score:
1.00
Link:
https://yomi.yoroi.company/submissions/03e727533b2ca8ed0dd10444ce7e95ef19334124fb3014fb090784b2371957b9

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
Create hunting rule
Rule name:Skystars_Malware_Imphash
Create hunting rule
Author:Skystars LightDefender
Description:imphash

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/271291/

Comments