oski | 295af57bf8cf7f6064c050254187ad87ea601143eac3a773e07fc2cbcb59be48

Analysis

max time kernel
142s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 07:29

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
64d23d2c0284efd48e19cc4f73d5066c.exe
Size 629KB
Sample240118-jbd5asfafp
SHA256 295af57bf8cf7f6064c050254187ad87ea601143eac3a773e07fc2cbcb59be48
MD5 64d23d2c0284efd48e19cc4f73d5066c
SHA1 1cd4826af2402de45ca42ec4b131bb54f5dcc96a
SHA512 2d9a7bac4393107380ca398f8c3b0f75d9e9124c7dfd74327d2fcbb4028d66ffb23b37ee872a7aedbeb8bddc2144038c2e78805bf4c385d8c944c4267e0c6322
SSDEEP 12288:ed4qnJQ+KBoezbjt5+1ogu/kJXCFW8ljotN0UPrmTMEvWfKDXTT:dBT/+1ogu/koI8aiKrmTMKhT
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer spyware stealer

Malware Config

Extracted

Family

oski

hikark.xyz

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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	64d23d2c0284efd48e19cc4f73d5066c.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 2528 set thread context of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100

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
4944	4768	WerFault.exe	100

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
1900	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2528	64d23d2c0284efd48e19cc4f73d5066c.exe
2528	64d23d2c0284efd48e19cc4f73d5066c.exe
2528	64d23d2c0284efd48e19cc4f73d5066c.exe
2528	64d23d2c0284efd48e19cc4f73d5066c.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2528	64d23d2c0284efd48e19cc4f73d5066c.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 1900	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	96
PID 2528 wrote to memory of 1900	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	96
PID 2528 wrote to memory of 1900	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	96
PID 2528 wrote to memory of 4584	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	98
PID 2528 wrote to memory of 4584	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	98
PID 2528 wrote to memory of 4584	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	98
PID 2528 wrote to memory of 4964	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	99
PID 2528 wrote to memory of 4964	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	99
PID 2528 wrote to memory of 4964	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	99
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100
PID 2528 wrote to memory of 4768	2528	64d23d2c0284efd48e19cc4f73d5066c.exe	100

C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
"C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\JgQxbKQq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp25F2.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:1900
- C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
  "C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"
  2⤵
  PID:4584
- C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
  "C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"
  2⤵
  PID:4964
- C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe
  "C:\Users\Admin\AppData\Local\Temp\64d23d2c0284efd48e19cc4f73d5066c.exe"
  2⤵
  PID:4768
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4768 -s 1276
    3⤵
    - Program crash
    PID:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4768 -ip 4768
1⤵
PID:4784

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Scheduled Task/Job

T1053

Privilege Escalation

Scheduled Task/Job

T1053

Defense Evasion

Credential Access

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/2528-8-0x00000000051F0000-0x0000000005200000-memory.dmp

Download

memory/2528-9-0x00000000060D0000-0x000000000613C000-memory.dmp

Download

memory/2528-2-0x00000000051F0000-0x0000000005200000-memory.dmp

Download

memory/2528-3-0x00000000052A0000-0x0000000005332000-memory.dmp

Download

memory/2528-4-0x00000000058F0000-0x0000000005E94000-memory.dmp

Download

memory/2528-5-0x0000000005270000-0x000000000528C000-memory.dmp

Download

memory/2528-6-0x00000000053E0000-0x000000000547C000-memory.dmp

Download

memory/2528-7-0x0000000074E70000-0x0000000075620000-memory.dmp

Download

memory/2528-1-0x0000000074E70000-0x0000000075620000-memory.dmp

Download

memory/2528-10-0x0000000008600000-0x000000000863C000-memory.dmp

Download

memory/2528-0-0x0000000000680000-0x0000000000722000-memory.dmp

Download

memory/2528-21-0x0000000074E70000-0x0000000075620000-memory.dmp

Download

memory/4768-17-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/4768-18-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/4768-20-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/4768-16-0x0000000000400000-0x0000000000438000-memory.dmp

Download

memory/4768-24-0x0000000000400000-0x0000000000438000-memory.dmp

Download