MalwareBazaar Database

You are currently viewing the MalwareBazaar entry for SHA256 42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf. 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: 42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf
SHA3-384 hash: 340b4e8e7c1fdbd4f5d715e5e5196cf8e1678cd52b2899570a7c581fcc0253ea0194d26d10e43b86b4482fdbfedd50d9
SHA1 hash: 55675cc5594b4731ab268fa2e1ff35df892de7df
MD5 hash: 03972c7f3b0df942d4e0a1e11956e523
humanhash: lemon-rugby-washington-steak
File name:03972C7F3B0DF942D4E0A1E11956E523.exe
Download: download sample
Signature OskiStealer
Create hunting rule
File size:905'728 bytes
First seen:2021-08-13 16:32:43 UTC
Last seen:Never
File type:Executable exe
MIME type:application/x-dosexec
imphash f34d5f2d4577ed6d9ceec516c1f5a744 (48'748 x AgentTesla, 19'642 x Formbook, 12'245 x SnakeKeylogger)
ssdeep 12288:PdjGXt2ghPHK7zt4QKvq7Mlax3UAXynyGPl+U8av4ORx:VGXt2g4R3Kvsl3XOd8LC
Threatray 2'519 similar samples on MalwareBazaar
TLSH T16815D0BDB7C09A04D2B30E76DC9E50149AB9DF025B43DB2FA0E07A2A583775AD43325D
Reporter abuse_ch
Tags:exe OskiStealer


Avatar
abuse_ch
OskiStealer C2:
http://soitaab.co/make//6.jpg

Indicators Of Compromise (IOCs)

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

IOCThreatFox Reference
http://soitaab.co/make//6.jpg https://threatfox.abuse.ch/ioc/185145/
http://soitaab.co/make//1.jpg https://threatfox.abuse.ch/ioc/185146/
http://soitaab.co/make//2.jpg https://threatfox.abuse.ch/ioc/185147/
http://soitaab.co/make//3.jpg https://threatfox.abuse.ch/ioc/185148/
http://soitaab.co/make//4.jpg https://threatfox.abuse.ch/ioc/185149/
http://soitaab.co/make//5.jpg https://threatfox.abuse.ch/ioc/185150/
http://soitaab.co/make//7.jpg https://threatfox.abuse.ch/ioc/185151/

Intelligence

File Origin
# of uploads :
1
# of downloads :
165
Origin country :
n/a
Vendor Threat Intelligence
Malware family:
n/a
ID:
1
File name:
http://celzedonia.co/12bk7XXeOLyLPyV.exe
Verdict:
Malicious activity
Analysis date:
2021-08-11 08:20:52 UTC
Tags:
loader trojan stealer vidar
Link:
https://app.any.run/tasks/82f041ef-90c6-471b-b790-63f6b4ed5813

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/179046/
Detection(s):
SecuriteInfo.com.Trojan.PackedNET.993-1.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:
MALICIOUS
Details
Windows PE Executable
Found a Windows Portable Executable (PE) binary. Depending on context, the presence of a binary is suspicious or malicious.
Verdict:
Malicious
Link:
https://analyze.intezer.com/analyses/9400444c-7563-44ad-b5ea-9dd84307e50f
Result
Threat name:
Oski Vidar
Create hunting rule
Detection:
malicious
Classification:
troj.spyw.evad
Score:
100 / 100
Link:
https://www.joesandbox.com/analysis/832565
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: 464996 Sample: 0tKX4w0nUm.exe Startdate: 13/08/2021 Architecture: WINDOWS Score: 100 45 Found malware configuration 2->45 47 Multi AV Scanner detection for dropped file 2->47 49 Multi AV Scanner detection for submitted file 2->49 51 9 other signatures 2->51 8 0tKX4w0nUm.exe 7 2->8         started        process3 file4 27 C:\Users\user\AppData\Roaming\pxOIUAzyZ.exe, PE32 8->27 dropped 29 C:\Users\...\pxOIUAzyZ.exe:Zone.Identifier, ASCII 8->29 dropped 31 C:\Users\user\AppData\Local\...\tmp9E90.tmp, XML 8->31 dropped 33 C:\Users\user\AppData\...\0tKX4w0nUm.exe.log, ASCII 8->33 dropped 53 Uses schtasks.exe or at.exe to add and modify task schedules 8->53 55 Injects a PE file into a foreign processes 8->55 12 0tKX4w0nUm.exe 193 8->12         started        17 schtasks.exe 1 8->17         started        signatures5 process6 dnsIp7 43 soitaab.co 195.242.110.39, 49721, 80 PROMARKET-ASPL unknown 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 19 cmd.exe 1 12->19         started        21 conhost.exe 17->21         started        file8 signatures9 process10 process11 23 taskkill.exe 1 19->23         started        25 conhost.exe 19->25         started       
Detection:
n/a
Link:
https://mwdb.cert.pl/sample/42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf/
Threat name:
ByteCode-MSIL.Trojan.AgentTesla
Create hunting rule
Status:
Malicious
First seen:
2021-08-11 11:47:49 UTC
AV detection:
16 of 28 (57.14%)
Threat level:
  5/5
Detection(s):
Malicious file
Link:
https://check.spamhaus.org/check/?searchterm=ildifl3zz4nxget6x4adjgumjsv4zx2c2lqu656nuzysd6dq3c7q._file
Verdict:
malicious
Similar samples:
06c8a1e6544aede327bad32a5732d5bcfff143da73da01d34938efbe917e3289
OskiStealer
223dfd54929007ac23d6a20dbcf81a519a14f1c4061d23afcb761b75796042d2
OskiStealer
43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
OskiStealer
44aa270e4c081241057bad8c1d0ea5864087325f8e3209aa10747f108123f718
OskiStealer
60d1297adb502d942493a794945336aea891d2c321476ef3349ac07726fca7c3
OskiStealer
a03b45dabcaf812402454befd876b2eafbdf9e967f3bb01e66f33f3cabbdebd5
OskiStealer
a34e7c63da647c394b8becde55d6e87bc34e2c934c89b7f23484747a3598fb4c
OskiStealer
+ 2'509 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/210813-cj5ths1x6e/
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
Malware Config
C2 Extraction:
soitaab.co/make/
Unpacked files
SH256 hash:
fe762c0472566bddda2c3c11e61380b9de7720b82084d0e5bc38df831d3d3947
MD5 hash:
7b6af9c3209daf2de7a3f169c4fef652
SHA1 hash:
c5fe7d743e5f2be9b1f53566eb13224a9e45b1b7
Detections:
win_oski_g0
Create hunting rule
win_oski_auto
Create hunting rule
Link:
https://www.unpac.me/results/bd1302b9-1e41-488b-9905-e7d14c45f332/
SH256 hash:
422bd60d50d5339d643eb9e8d20ac28750789b8570fe3ea5ff347cdaaa57dfb2
MD5 hash:
a0a9143c20f5d17da1258f0a1a8d55ac
SHA1 hash:
33075cb048192b5ecedf2e22c2c05eb2e4c0dfcf
Link:
https://www.unpac.me/results/bd1302b9-1e41-488b-9905-e7d14c45f332/
SH256 hash:
ed0dd1e2260da7b03c8b80e0b45e8fef44be722c1e8c41e078c1a25ed0d18ecc
MD5 hash:
6057ce35bd926dd6d49dedfa9cc18372
SHA1 hash:
1f4e44e1740ffbd91129ac3a37d22845bc52c158
Link:
https://www.unpac.me/results/bd1302b9-1e41-488b-9905-e7d14c45f332/
SH256 hash:
42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf
MD5 hash:
03972c7f3b0df942d4e0a1e11956e523
SHA1 hash:
55675cc5594b4731ab268fa2e1ff35df892de7df
Link:
https://www.unpac.me/results/bd1302b9-1e41-488b-9905-e7d14c45f332/
Verdict:
Malicious
Link:
https://www.vmray.com/analyses/42c682af79cf/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/42c682af79cf1b73127ebf00349a8c4cabccdf42d2e14f77cda67121f870d8bf

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/179046/

Comments