MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7. 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 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
SHA3-384 hash: 06016d1e47560a9d1c5dc3aba07558e590848c15918aa5d3b4011f0f6dd4c8a7f2057ce7e759a4b030da8f9a22f3849d
SHA1 hash: 6bbf42e0b05b025e8162404435eb1b25cc07d5f8
MD5 hash: 5f0969cdd00801051ff7f2afd2343ff3
humanhash: september-music-double-steak
File name:5f0969cdd00801051ff7f2afd2343ff3.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:807'936 bytes
First seen:2021-08-10 08:25:55 UTC
Last seen:2021-08-10 10:41:03 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'650 x AgentTesla, 19'462 x Formbook, 12'203 x SnakeKeylogger)
ssdeep 24576:seV+CQ38aT1m7NKsDTxe1/6hTMLevYWhzDcUjMFA:DV+CQ33T1m70sDTkhYM
Threatray 2'434 similar samples on MalwareBazaar
TLSH T11005E1657780BB8FC13F4EB5C8515910DBE1E2776307E3CB2DE285DC1A8D6928B23266
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://tunqyuindia.com/mar3//6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://tunqyuindia.com/mar3//6.jpg https://threatfox.abuse.ch/ioc/167106/
http://tunqyuindia.com/mar3//1.jpg https://threatfox.abuse.ch/ioc/167107/
http://tunqyuindia.com/mar3//2.jpg https://threatfox.abuse.ch/ioc/167108/
http://tunqyuindia.com/mar3//3.jpg https://threatfox.abuse.ch/ioc/167109/
http://tunqyuindia.com/mar3//4.jpg https://threatfox.abuse.ch/ioc/167110/
http://tunqyuindia.com/mar3//5.jpg https://threatfox.abuse.ch/ioc/167111/
http://tunqyuindia.com/mar3//7.jpg https://threatfox.abuse.ch/ioc/167112/

Intelligence

File Origin
# of uploads :
3
# of downloads :
126
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Rfq Proforma Invoice #865678.ppam
Verdict:
Malicious activity
Analysis date:
2021-08-10 07:17:13 UTC
Tags:
macros macros-on-open loader
Link:
https://app.any.run/tasks/a311d875-0885-4fb3-bfe8-2b114b6d8d34

Note:
ANY.RUN is an interactive sandbox that analyzes all user actions rather than an uploaded sample
Detection:
n/a
Link:
https://www.capesandbox.com/analysis/177853/
Detection(s):
SecuriteInfo.com.Artemis5F0969CDD008.6674.8117.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Sending a UDP request
Creating a file in the %AppData% directory
Enabling the 'hidden' option for recently created files
Adding an access-denied ACE
Creating a file in the %temp% directory
Launching a process
Creating a process with a hidden window
Deleting a recently created file
Unauthorized injection to a recently created process
Creating a file
DNS request
Connection attempt
Replacing files
Running batch commands
Launching a tool to kill processes
Enabling autorun by creating a file
Result
Verdict:
UNKNOWN
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/35bc7d8b-3263-436b-b6e6-9a4907fb9223
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/830007
Signature
Downloads files with wrong headers with respect to MIME Content-Type
Found malware configuration
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
Multi AV Scanner detection for dropped file
Multi AV Scanner detection for submitted file
Posts data to a JPG file (protocol mismatch)
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 Oski Stealer
Yara detected Vidar stealer
Behaviour
Behavior Graph:
Download SVG
behaviorgraph top1 signatures2 2 Behavior Graph ID: 462435 Sample: 0pRFc6sQAd.exe Startdate: 10/08/2021 Architecture: WINDOWS Score: 100 47 Found malware configuration 2->47 49 Multi AV Scanner detection for dropped file 2->49 51 Multi AV Scanner detection for submitted file 2->51 53 9 other signatures 2->53 8 0pRFc6sQAd.exe 7 2->8         started        process3 file4 29 C:\Users\user\AppData\Roaming\vTKyEeK.exe, PE32 8->29 dropped 31 C:\Users\user\...\vTKyEeK.exe:Zone.Identifier, ASCII 8->31 dropped 33 C:\Users\user\AppData\Local\...\tmpB76B.tmp, XML 8->33 dropped 35 C:\Users\user\AppData\...\0pRFc6sQAd.exe.log, ASCII 8->35 dropped 55 Uses schtasks.exe or at.exe to add and modify task schedules 8->55 57 Injects a PE file into a foreign processes 8->57 12 0pRFc6sQAd.exe 193 8->12         started        17 schtasks.exe 1 8->17         started        19 0pRFc6sQAd.exe 8->19         started        signatures5 process6 dnsIp7 45 tunqyuindia.com 185.212.128.145, 49721, 80 INTERNET-ITNL Germany 12->45 37 C:\ProgramData\vcruntime140.dll, PE32 12->37 dropped 39 C:\ProgramData\sqlite3.dll, PE32 12->39 dropped 41 C:\ProgramData\softokn3.dll, PE32 12->41 dropped 43 4 other files (none is malicious) 12->43 dropped 59 Tries to harvest and steal browser information (history, passwords, etc) 12->59 61 Tries to steal Crypto Currency Wallets 12->61 21 cmd.exe 1 12->21         started        23 conhost.exe 17->23         started        file8 signatures9 process10 process11 25 taskkill.exe 1 21->25         started        27 conhost.exe 21->27         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-08-10 08:08:46 UTC
AV detection:
11 of 45 (24.44%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=indaufzewjjb3vpjprumc3w7z2ok6iwusrjo7wkwuzg3sg2zgwtq._file
Verdict:
malicious
Similar samples:
223dfd54929007ac23d6a20dbcf81a519a14f1c4061d23afcb761b75796042d2
OskiStealer
436651743894169dc9cd4c7ef01734420a5ce2d6dcaf57825197e0c756feeee9
OskiStealer
44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718
OskiStealer
60d1297adb502d942493a794945336aea891d2c321476ef3349ac07726fca7c3
OskiStealer
69f41c2c444cd2147188d547c5edd6a4a8e2f238df52e1709dc7bb1066232ecc
OskiStealer
e5cfbeb6e53527b724d1a710c44dd7f86a0befadb35db2c81ee1ec9aafd12b40
OskiStealer
+ 2'424 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer suricata
Link:
https://tria.ge/reports/210810-8bd2y7m5he/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Kills process with taskkill
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
Deletes itself
Loads dropped DLL
Reads user/profile data of web browsers
Downloads MZ/PE file
Oski
suricata: ET MALWARE Suspicious Zipped Filename in Outbound POST Request (Passwords.txt)
suricata: ET MALWARE Vidar/Arkei/Megumin/Oski Stealer Data Exfil
Malware Config
C2 Extraction:
tunqyuindia.com/mar3/
Unpacked files
SH256 hash:
4d822f20accb7947f803234a490c5a4472c57444d975b06470af048660a9f5bd
MD5 hash:
1d593dbf57389d010ecd38abfab24f20
SHA1 hash:
14776a33ba6f34a7b00062c0d6e74800aeb1ef55
Link:
https://www.unpac.me/results/a721e288-33c5-443a-b3eb-7f5646b8e6ba/
SH256 hash:
ed0dd1e2260da7b03c8b80e0b45e8fef44be722c1e8c41e078c1a25ed0d18ecc
MD5 hash:
6057ce35bd926dd6d49dedfa9cc18372
SHA1 hash:
1f4e44e1740ffbd91129ac3a37d22845bc52c158
Link:
https://www.unpac.me/results/a721e288-33c5-443a-b3eb-7f5646b8e6ba/
SH256 hash:
e4b4789cbdcdfdaae905ae57c3905977a4d4dac4a7310cad9d0ac9aa762ebc30
MD5 hash:
b70e33083d807e95ce34e16cb6d94e0c
SHA1 hash:
6d053e1524fa27f7bd14c0a98d15b1a6b16efcc7
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/a721e288-33c5-443a-b3eb-7f5646b8e6ba/
SH256 hash:
43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
MD5 hash:
5f0969cdd00801051ff7f2afd2343ff3
SHA1 hash:
6bbf42e0b05b025e8162404435eb1b25cc07d5f8
Link:
https://www.unpac.me/results/a721e288-33c5-443a-b3eb-7f5646b8e6ba/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/43460a1724b2/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/43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7

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: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.

Web download

OskiStealer

Executable exe 43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7

(this sample)

  
URLhaus
https://urlhaus.abuse.ch/url/1521319/
  
Delivery method
Distributed via web download
Cape
Cape
https://www.capesandbox.com/analysis/177853/

Comments