oski | 43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7

General

Target

5f0969cdd00801051ff7f2afd2343ff3.exe
Size

789KB
MD5

5f0969cdd00801051ff7f2afd2343ff3
SHA1

6bbf42e0b05b025e8162404435eb1b25cc07d5f8
SHA256

43460a1724b2521dd5e97c68c16edfce9caf22d49452efd956a64db91b5935a7
SHA512

0b89a31ae863641dd0b87a7cedb566241e0df84a685f7df73e04c14580b16f80d3042eeaae65a2a09f2772187ff73d0d833f2cfad0663ba4b4a1e8a66c23a9dd
SSDEEP

24576:seV+CQ38aT1m7NKsDTxe1/6hTMLevYWhzDcUjMFA:DV+CQ33T1m70sDTkhYM

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

C2

tunqyuindia.com/mar3/

Signatures

Oski
Oski is an infostealer targeting browser data, crypto wallets.
infostealer oski

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	5f0969cdd00801051ff7f2afd2343ff3.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1708 set thread context of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1156	232	WerFault.exe	103

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2204	schtasks.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1708 wrote to memory of 2204	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	101
PID 1708 wrote to memory of 2204	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	101
PID 1708 wrote to memory of 2204	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	101
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103
PID 1708 wrote to memory of 232	1708	5f0969cdd00801051ff7f2afd2343ff3.exe	103

C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3.exe
"C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1708
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vTKyEeK" /XML "C:\Users\Admin\AppData\Local\Temp\tmp270B.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:2204
- C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3.exe
  "C:\Users\Admin\AppData\Local\Temp\5f0969cdd00801051ff7f2afd2343ff3.exe"
  2⤵
  PID:232
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 232 -s 1300
    3⤵
    - Program crash
    PID:1156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 232 -ip 232
1⤵
PID:1236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Scheduled Task/Job

1

T1053

Privilege Escalation

Scheduled Task/Job

1

T1053

Defense Evasion

Credential Access

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp270B.tmp

Filesize
1KB

MD5
508cf3d7b010c06348cdad05f3c77034

SHA1
c32c9d7209ca4413623ddf7ee46e29c01927aef8

SHA256
27462574074d4b63c57e7cd300b7f8403ba1166d9ef4037153cb1f4eca142624

SHA512
5cbb9eddb7e51f65e4874377ba8cd87cabcc86884a8ba0a82b46bd6cbfa7237d7abae96f729abb934cbef73d9cf8640d1923d2445e8530e6c6325c326e7ecb43

Download Submit
memory/232-27-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/232-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/232-22-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/232-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/232-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1708-5-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/1708-13-0x00000000069D0000-0x0000000006A08000-memory.dmp

Filesize
224KB

Download
memory/1708-7-0x0000000005960000-0x000000000596A000-memory.dmp

Filesize
40KB

Download
memory/1708-9-0x0000000007050000-0x0000000007066000-memory.dmp

Filesize
88KB

Download
memory/1708-10-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1708-11-0x0000000005980000-0x0000000005990000-memory.dmp

Filesize
64KB

Download
memory/1708-12-0x0000000007070000-0x000000000710C000-memory.dmp

Filesize
624KB

Download
memory/1708-8-0x0000000005BC0000-0x0000000005C16000-memory.dmp

Filesize
344KB

Download
memory/1708-6-0x0000000005980000-0x0000000005990000-memory.dmp

Filesize
64KB

Download
memory/1708-1-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1708-4-0x000000000A360000-0x000000000A904000-memory.dmp

Filesize
5.6MB

Download
memory/1708-23-0x0000000074A50000-0x0000000075200000-memory.dmp

Filesize
7.7MB

Download
memory/1708-2-0x00000000058C0000-0x0000000005950000-memory.dmp

Filesize
576KB

Download
memory/1708-3-0x0000000009D10000-0x0000000009DAC000-memory.dmp

Filesize
624KB

Download
memory/1708-0-0x0000000000D60000-0x0000000000E2A000-memory.dmp

Filesize
808KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads