MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 a870249216a9fd48fa38faf197c7cad48a16b1c1f0d17f98b9b5de4c1a1b7cfb. 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: 12


Intelligence 12 IOCs 7 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: a870249216a9fd48fa38faf197c7cad48a16b1c1f0d17f98b9b5de4c1a1b7cfb
SHA3-384 hash: f684a6fa21db7dc2fbccb0273805b0e7e6f4feafb4a518d7edd9dfcfd12f5397d269666d72cf9b7c2c5e29eaa06f7b28
SHA1 hash: cb109fb7276a89e2a16a8a028b49289909ffab7f
MD5 hash: 0f4bf458102f1699b0628646c335a140
humanhash: indigo-may-colorado-blue
File name:Required PO 001.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:823'296 bytes
First seen:2021-10-01 03:41:15 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'652 x AgentTesla, 19'463 x Formbook, 12'205 x SnakeKeylogger)
ssdeep 12288:yjYTIwsaZUj43HOZGkocfj/YwIlfZkJOT7y5s+:yj/wsGcfrQRkc7Mr
Threatray 3'782 similar samples on MalwareBazaar
TLSH T103051692C6030801FFD4CAFF50EA98773A375D546862AC1D2A987CAF1A7F1BE1017676
File icon (PE):PE icon
dhash icon 4d342169d4d53569 (3 x OskiStealer, 1 x NetWire)
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://samsungprod.xyz/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://samsungprod.xyz/6.jpg https://threatfox.abuse.ch/ioc/229332/
http://samsungprod.xyz/1.jpg https://threatfox.abuse.ch/ioc/229333/
http://samsungprod.xyz/2.jpg https://threatfox.abuse.ch/ioc/229334/
http://samsungprod.xyz/3.jpg https://threatfox.abuse.ch/ioc/229335/
http://samsungprod.xyz/4.jpg https://threatfox.abuse.ch/ioc/229336/
http://samsungprod.xyz/5.jpg https://threatfox.abuse.ch/ioc/229337/
http://samsungprod.xyz/7.jpg https://threatfox.abuse.ch/ioc/229338/

Intelligence

File Origin
# of uploads :
1
# of downloads :
129
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
Required PO 001.exe
Verdict:
Malicious activity
Analysis date:
2021-10-01 03:43:10 UTC
Tags:
trojan stealer vidar loader
Link:
https://app.any.run/tasks/4123e068-8620-449a-b855-2ade82dd432d

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/193823/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.1068-1.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
Launching a process
Creating a file in the %temp% directory
Delayed writing of the file
Malware family:
Oski Stealer
Create hunting rule
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/2f4109dd-efc4-4ac4-b656-ae06e595a7bf
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/862431
Signature
.NET source code contains potential unpacker
Adds a directory exclusion to Windows Defender
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
Performs DNS queries to domains with low reputation
Posts data to a JPG file (protocol mismatch)
Sigma detected: Powershell Defender Exclusion
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: 494859 Sample: Required PO 001.exe Startdate: 01/10/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Yara detected Oski Stealer 2->47 49 Yara detected AntiVM3 2->49 51 10 other signatures 2->51 8 Required PO 001.exe 7 2->8         started        process3 file4 31 C:\Users\user\AppData\Local\...\tmp4256.tmp, XML 8->31 dropped 33 C:\Users\user\AppData\Roaming\HJCiKD.exe, PE32 8->33 dropped 53 Adds a directory exclusion to Windows Defender 8->53 55 Injects a PE file into a foreign processes 8->55 12 Required PO 001.exe 196 8->12         started        17 powershell.exe 25 8->17         started        19 schtasks.exe 1 8->19         started        signatures5 process6 dnsIp7 43 samsungprod.xyz 195.133.18.140, 49753, 80 AS-REGRU Russian Federation 12->43 35 C:\ProgramData\vcruntime140.dll, PE32 12->35 dropped 37 C:\ProgramData\sqlite3.dll, PE32 12->37 dropped 39 C:\ProgramData\softokn3.dll, PE32 12->39 dropped 41 4 other files (none is malicious) 12->41 dropped 57 Tries to harvest and steal browser information (history, passwords, etc) 12->57 59 Tries to steal Crypto Currency Wallets 12->59 21 cmd.exe 1 12->21         started        23 conhost.exe 17->23         started        25 conhost.exe 19->25         started        file8 signatures9 process10 process11 27 taskkill.exe 1 21->27         started        29 conhost.exe 21->29         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/a870249216a9fd48fa38faf197c7cad48a16b1c1f0d17f98b9b5de4c1a1b7cfb/
Threat name:
ByteCode-MSIL.Trojan.Generic
Create hunting rule
Status:
Suspicious
First seen:
2021-10-01 03:42:14 UTC
AV detection:
11 of 45 (24.44%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=vbycjeqwvh6ur6ry7lyzpr6k2sfbnmob6dix7gfzwxpeygq3pt5q._file
Verdict:
malicious
Similar samples:
06c8a1e6544aede327bad32a5732d5bcfff143da73da01d34938efbe917e3289
OskiStealer
42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf
OskiStealer
43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
OskiStealer
44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718
OskiStealer
5953d0e6904dcb824fe1afde62ed8c2e2266f9f074514d395a31b759013e846f
OskiStealer
5ffe71b977866248e55612e20cea0bf3ad51a50896443d791081f58b49cdc5df
OskiStealer
83e8782266edec54f4c451f60e2095864c8a9d817e7296076e128c686a6bfea3
OskiStealer
a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
OskiStealer
d950a4ee53971eb72e947a01bb1093a04676b7587fc0c6ccc26d9c964b1fc916
OskiStealer
+ 3'772 additional samples on MalwareBazaar
Result
Malware family:
oski
Create hunting rule
Score:
  10/10
Tags:
family:oski discovery infostealer spyware stealer
Link:
https://tria.ge/reports/211001-d9fg5aafh9/
Behaviour
Checks processor information in registry
Creates scheduled task(s)
Kills process with taskkill
Suspicious behavior: EnumeratesProcesses
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
Oski
Malware Config
C2 Extraction:
samsungprod.xyz
Unpacked files
SH256 hash:
8284626bb324db0a4b2516f9b5dc1da92a26e6315f7a2fe771079a99021125fe
MD5 hash:
eaddb22aa4c81beb01cd9f45fb47809c
SHA1 hash:
dca3c2c7c76f332ad5cf31ab7be227de4e0aa6c8
Link:
https://www.unpac.me/results/38a7fe6f-f444-444a-bf28-9683d3264b11/
SH256 hash:
ea7ae7d442104a7bc92bbfdf88d54afc7d62e286f2ec8366c6c5e0587989e0e9
MD5 hash:
365d5535fd2d9c6d5567ee1efcf2cc81
SHA1 hash:
8884a246d6208da35ee991fd81c038c3dfd4dca0
Link:
https://www.unpac.me/results/38a7fe6f-f444-444a-bf28-9683d3264b11/
SH256 hash:
5101375e331b44386ffe80db04f2605545c5eac6856746e8193e6a2575eea12d
MD5 hash:
2bb437f2ed0dde2de96af393fa6a9bda
SHA1 hash:
881cdf22ba4dc630ae1a0f7081ad02ce2986e3a3
Link:
https://www.unpac.me/results/38a7fe6f-f444-444a-bf28-9683d3264b11/
SH256 hash:
0bedf8cf83225c3591e8f897ea5fde3e23448d8d07ee479e5d4a14e3ada7793e
MD5 hash:
6da9ba18d7a730f5b55f2fa688108f59
SHA1 hash:
271fc1f4eb19d8935c1cac79992619ef79c12099
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/38a7fe6f-f444-444a-bf28-9683d3264b11/
SH256 hash:
a870249216a9fd48fa38faf197c7cad48a16b1c1f0d17f98b9b5de4c1a1b7cfb
MD5 hash:
0f4bf458102f1699b0628646c335a140
SHA1 hash:
cb109fb7276a89e2a16a8a028b49289909ffab7f
Link:
https://www.unpac.me/results/38a7fe6f-f444-444a-bf28-9683d3264b11/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/a870249216a9/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/a870249216a9fd48fa38faf197c7cad48a16b1c1f0d17f98b9b5de4c1a1b7cfb

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.

Cape
Cape
https://www.capesandbox.com/analysis/193823/

Comments