oski | 84881b1a60042a853baf05ca0dcfdbdb85c72edfc8c6d46493fe6e4f6697b2f6

Analysis

max time kernel
94s
max time network
141s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-11-2024 21:01

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
Size

804KB
MD5

90a2d295d4e5950379bba11c562c6d70
SHA1

088a10386ddfb15aef4c74666719f88b6eb91506
SHA256

84881b1a60042a853baf05ca0dcfdbdb85c72edfc8c6d46493fe6e4f6697b2f6
SHA512

3635140742bb2c27b9d6b922ecbdc9ff547a24019821a47b8094eda005973b8d2130af82830e6aa72fcdb397c994997eece1c9306d68218d61c16cb3375e0f90
SSDEEP

12288:yjYTIwsaZUj43HOZGkocfj/YwIlfZkJOT7y5s+7:yj/wsGcfrQRkc7Mr7

Score

10^/10

oski discovery execution infostealer spyware stealer

Malware Config

Extracted

Family

oski

samsungprod.xyz

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
536	powershell.exe

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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe

Reads user/profile data of web browsers 3 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

Credentials from Web Browsers
T1555.003

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3820 set thread context of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94

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
1964	4020	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2560	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
536	powershell.exe
536	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
Token: SeDebugPrivilege	536	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3820 wrote to memory of 536	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	91
PID 3820 wrote to memory of 536	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	91
PID 3820 wrote to memory of 536	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	91
PID 3820 wrote to memory of 2560	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	93
PID 3820 wrote to memory of 2560	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	93
PID 3820 wrote to memory of 2560	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	93
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94
PID 3820 wrote to memory of 4020	3820	90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe	94

C:\Users\Admin\AppData\Local\Temp\90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3820
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:536
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\HJCiKD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp632A.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2560
- C:\Users\Admin\AppData\Local\Temp\90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\90a2d295d4e5950379bba11c562c6d70_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4020
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1328
    3⤵
    - Program crash
    PID:1964

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4020 -ip 4020
1⤵
PID:2372

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\ProgramData\msvcp140.dll

Filesize
1B

MD5
7215ee9c7d9dc229d2921a40e899ec5f

SHA1
b858cb282617fb0956d960215c8e84d1ccf909c6

SHA256
36a9e7f1c95b82ffb99743e0c5c4ce95d83c9a430aac59f84ef3cbfab6145068

SHA512
f90ddd77e400dfe6a3fcf479b00b1ee29e7015c5bb8cd70f5f15b4886cc339275ff553fc8a053f8ddc7324f45168cffaf81f8c3ac93996f6536eef38e5e40768

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ywkhgk4w.40k.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/536-65-0x0000000006920000-0x000000000693E000-memory.dmp

Filesize
120KB

Download
memory/536-22-0x000000007460E000-0x000000007460F000-memory.dmp

Filesize
4KB

Download
memory/536-78-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/536-30-0x0000000005CE0000-0x0000000005D46000-memory.dmp

Filesize
408KB

Download
memory/536-28-0x00000000055A0000-0x00000000055C2000-memory.dmp

Filesize
136KB

Download
memory/536-74-0x00000000079D0000-0x00000000079EA000-memory.dmp

Filesize
104KB

Download
memory/536-73-0x00000000078D0000-0x00000000078E4000-memory.dmp

Filesize
80KB

Download
memory/536-72-0x00000000078C0000-0x00000000078CE000-memory.dmp

Filesize
56KB

Download
memory/536-71-0x0000000007890000-0x00000000078A1000-memory.dmp

Filesize
68KB

Download
memory/536-70-0x0000000007910000-0x00000000079A6000-memory.dmp

Filesize
600KB

Download
memory/536-69-0x0000000007700000-0x000000000770A000-memory.dmp

Filesize
40KB

Download
memory/536-68-0x0000000007690000-0x00000000076AA000-memory.dmp

Filesize
104KB

Download
memory/536-20-0x0000000002AA0000-0x0000000002AD6000-memory.dmp

Filesize
216KB

Download
memory/536-48-0x0000000006360000-0x000000000637E000-memory.dmp

Filesize
120KB

Download
memory/536-67-0x0000000007CD0000-0x000000000834A000-memory.dmp

Filesize
6.5MB

Download
memory/536-66-0x0000000007360000-0x0000000007403000-memory.dmp

Filesize
652KB

Download
memory/536-24-0x00000000055D0000-0x0000000005BF8000-memory.dmp

Filesize
6.2MB

Download
memory/536-54-0x0000000006940000-0x0000000006972000-memory.dmp

Filesize
200KB

Download
memory/536-55-0x00000000715B0000-0x00000000715FC000-memory.dmp

Filesize
304KB

Download
memory/536-27-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/536-75-0x00000000079B0000-0x00000000079B8000-memory.dmp

Filesize
32KB

Download
memory/536-49-0x00000000063B0000-0x00000000063FC000-memory.dmp

Filesize
304KB

Download
memory/536-25-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/536-29-0x0000000005C70000-0x0000000005CD6000-memory.dmp

Filesize
408KB

Download
memory/536-40-0x0000000005E70000-0x00000000061C4000-memory.dmp

Filesize
3.3MB

Download
memory/3820-0-0x000000007460E000-0x000000007460F000-memory.dmp

Filesize
4KB

Download
memory/3820-9-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/3820-4-0x0000000005380000-0x000000000538A000-memory.dmp

Filesize
40KB

Download
memory/3820-5-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/3820-26-0x0000000074600000-0x0000000074DB0000-memory.dmp

Filesize
7.7MB

Download
memory/3820-1-0x0000000000870000-0x000000000093E000-memory.dmp

Filesize
824KB

Download
memory/3820-3-0x00000000052C0000-0x0000000005352000-memory.dmp

Filesize
584KB

Download
memory/3820-2-0x0000000005950000-0x0000000005EF4000-memory.dmp

Filesize
5.6MB

Download
memory/3820-6-0x0000000006CF0000-0x0000000006D8C000-memory.dmp

Filesize
624KB

Download
memory/3820-7-0x0000000005590000-0x000000000559C000-memory.dmp

Filesize
48KB

Download
memory/3820-8-0x000000007460E000-0x000000007460F000-memory.dmp

Filesize
4KB

Download
memory/3820-11-0x00000000071B0000-0x00000000071EA000-memory.dmp

Filesize
232KB

Download
memory/3820-10-0x0000000007140000-0x00000000071AE000-memory.dmp

Filesize
440KB

Download
memory/4020-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4020-53-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download