MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017. 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: 13


Intelligence 13 IOCs 7 YARA 3 File information Comments
Download sample Add tag Delete this sample Report a False Positive

SHA256 hash: 9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017
SHA3-384 hash: b844abddb0b775077f2785de12143e07e7732127b10520a9b78b244b85d0c60c8e723740e1057dcd6fcba759eee6707e
SHA1 hash: 3dc6a5d31143af94ec21b891d1723527a04ba9bc
MD5 hash: b92a57975d4cee3e7a64ffd8c0b8eba1
humanhash: happy-papa-chicken-uncle
File name:ORDEN DE COMPRA (2).exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:569'856 bytes
First seen:2021-11-30 09:47:45 UTC
Last seen:2021-11-30 11:35:47 UTC
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'742 x AgentTesla, 19'607 x Formbook, 12'242 x SnakeKeylogger)
ssdeep 12288:e7gLZlHVmCpqoff0XHYhrRXz4Yn0chCQr8sqxqH:ZLZlHVLF3rz4e0cEBsEq
Threatray 4'076 similar samples on MalwareBazaar
TLSH T156C4122A62741605C67E4BBEB4B440105B7DB216948BE35E775E18DA1FE33C3CA1239F
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://vsiperu.com/6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://vsiperu.com/6.jpg https://threatfox.abuse.ch/ioc/256413/
http://vsiperu.com/1.jpg https://threatfox.abuse.ch/ioc/256414/
http://vsiperu.com/2.jpg https://threatfox.abuse.ch/ioc/256415/
http://vsiperu.com/3.jpg https://threatfox.abuse.ch/ioc/256416/
http://vsiperu.com/4.jpg https://threatfox.abuse.ch/ioc/256417/
http://vsiperu.com/5.jpg https://threatfox.abuse.ch/ioc/256418/
http://vsiperu.com/7.jpg https://threatfox.abuse.ch/ioc/256419/

Intelligence

File Origin
# of uploads :
2
# of downloads :
158
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
ORDEN DE COMPRA (2).exe
Verdict:
Malicious activity
Analysis date:
2021-11-30 09:48:54 UTC
Tags:
trojan stealer vidar
Link:
https://app.any.run/tasks/fc3f7e61-fa6f-4d68-861d-c2dada255a4f

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/209870/
Detection(s):
SecuriteInfo.com.MSIL.Packed.19.2907.11672.UNOFFICIAL
Create hunting rule

Result
Verdict:
Malware
Maliciousness:

Behaviour
Creating a window
DNS request
Sending a custom TCP request
Сreating synchronization primitives
Launching a process
Creating a process with a hidden window
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
Creating a process from a recently created file
Unauthorized injection to a recently created process
Enabling autorun by creating a file
Verdict:
Suspicious
Threat level:
  5/10
Confidence:
100%
Tags:
obfuscated packed
Link:
https://www.filescan.io/uploads/61a5f355bbfd2af97cbc3c0b/reports/90cb377a-8f76-4b4f-9906-4f67cfc517ee/overview
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/1995e172-dfb1-4fd3-8fe9-2317417068ce
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/898579
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)
Posts data to a JPG file (protocol mismatch)
Sigma detected: Powershell Defender Exclusion
Sigma detected: Suspicius Add Task From User AppData Temp
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: 531057 Sample: ORDEN DE COMPRA (2).exe Startdate: 30/11/2021 Architecture: WINDOWS Score: 100 49 Found malware configuration 2->49 51 Yara detected Oski Stealer 2->51 53 Yara detected AntiVM3 2->53 55 11 other signatures 2->55 8 ORDEN DE COMPRA (2).exe 5 2->8         started        process3 file4 35 C:\Users\user\AppData\...\vJDOyzKfgYgvV.exe, PE32 8->35 dropped 37 C:\Users\user\AppData\Local\Temp\tmp888.tmp, XML 8->37 dropped 57 Adds a directory exclusion to Windows Defender 8->57 12 ORDEN DE COMPRA (2).exe 196 8->12         started        17 powershell.exe 24 8->17         started        19 powershell.exe 24 8->19         started        21 schtasks.exe 1 8->21         started        signatures5 process6 dnsIp7 47 vsiperu.com 107.180.88.78, 49744, 80 AS-26496-GO-DADDY-COM-LLCUS United States 12->47 39 C:\ProgramData\vcruntime140.dll, PE32 12->39 dropped 41 C:\ProgramData\sqlite3.dll, PE32 12->41 dropped 43 C:\ProgramData\softokn3.dll, PE32 12->43 dropped 45 4 other files (none is malicious) 12->45 dropped 59 Tries to harvest and steal browser information (history, passwords, etc) 12->59 61 Tries to steal Crypto Currency Wallets 12->61 23 cmd.exe 12->23         started        25 conhost.exe 17->25         started        27 conhost.exe 19->27         started        29 conhost.exe 21->29         started        file8 signatures9 process10 process11 31 conhost.exe 23->31         started        33 taskkill.exe 23->33         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017/
Threat name:
ByteCode-MSIL.Trojan.Oskistealer
Create hunting rule
Status:
Malicious
First seen:
2021-11-30 09:48:14 UTC
File Type:
PE (.Net Exe)
Extracted files:
19
AV detection:
19 of 28 (67.86%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=to2rpkfc4ubi2byuxs5f3egew46fxiuidmis6tvcnegsnhopialq._file
Verdict:
malicious
Similar samples:
192f884438809d6fb01ae0c89c4ccd1fdae62d429e78bdbcc4ff4d28a54049af
OskiStealer
38e25fba4b5448546fa9672ea70ac050a9524d624b84d92fa39f9a8bbe7efa6b
OskiStealer
66a1b49f893976a60ca25813345ea54a5582acf7a5a0821c03cc45bcfc89b5c5
OskiStealer
b70f4075c4ce52960faacb101aac17a9cd734cbec86b6a9d63944e900420bde1
OskiStealer
c17243e46ff224631e589c55642c3666e5c560715841e8b8ebdd511cb70da8dd
OskiStealer
+ 4'066 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/211130-lssecshgd6/
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:
vsiperu.com
Unpacked files
SH256 hash:
aa4bf11090c55211ea6f147ead43993146a4dd70aeb6e3b4ef09e5c95d6e7396
MD5 hash:
345e654f70896090279e43934cae7f00
SHA1 hash:
ab2cc07ddfb355f2128e9599d833f51bbfd1dad2
Link:
https://www.unpac.me/results/bb585c9e-4ba6-4462-8178-7bda45cae335/
SH256 hash:
b19104b568ca3ddccc2a8d3d10ecddb1ea240171e798dc3a486292cfa14b6365
MD5 hash:
7b0900da932f4ed9630d65b04422736d
SHA1 hash:
6fa340436e3a8e73ae2b3e911f861483183c68ef
Link:
https://www.unpac.me/results/bb585c9e-4ba6-4462-8178-7bda45cae335/
SH256 hash:
56c93ed5c6ee08f9f21d39a51d292e0bb30ab124416226eb3b2742b56c9032ca
MD5 hash:
df49d3809283a1adb88ce66da8e55063
SHA1 hash:
00655a8d7bb443aa209d6f97c3b099b394b50d3e
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/bb585c9e-4ba6-4462-8178-7bda45cae335/
Parent samples :
9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017
d43a3e7224191e2e6c7639033a7adada48053f4040fcbe5f8892e40cbdb9a86e
SH256 hash:
9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017
MD5 hash:
b92a57975d4cee3e7a64ffd8c0b8eba1
SHA1 hash:
3dc6a5d31143af94ec21b891d1723527a04ba9bc
Link:
https://www.unpac.me/results/bb585c9e-4ba6-4462-8178-7bda45cae335/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/9bb517a8a2e5/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/9bb517a8a2e5028d0714bcba5d90c4b73c5ba2881b112f4ea2690d269dcf4017

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/209870/

Comments