oski | 492ca440a9dc4c40b2e8384461c122f7e078c3f771a7457c8ec4eb35d0745e59

Analysis

max time kernel
94s
max time network
136s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
10/01/2025, 15:06

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General

Target

JaffaCakes118_e7476f5c2d8d802c0737d9f7d92d0c53.ps1
Size

808KB
MD5

e7476f5c2d8d802c0737d9f7d92d0c53
SHA1

9f3ed412395af9bb3db4872e634acc99fc0ed250
SHA256

492ca440a9dc4c40b2e8384461c122f7e078c3f771a7457c8ec4eb35d0745e59
SHA512

35f6d0c3fcb4806349d657b0a2ce0fd51db2cb2eec968f04756ac3e45fb372aaf820f71a3d04260518b1b29b93df71b6f56b6bc61b2d809d9f21a663bef745dc
SSDEEP

1536:7CZD3zuq5Q5JH5BE3Lj84Ro77bDNW3WsN5K93TdMCNvWjxkIfnvODAU4V0pLyNU1:9

Score

10^/10

oski discovery execution infostealer

Malware Config

Extracted

Family

oski

103.125.190.248/i1/

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3284 set thread context of 2468	3284	powershell.exe	83

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3284	powershell.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4600	2468	WerFault.exe	83

System Location Discovery: System Language Discovery 1 TTPs 1 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	jsc.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3284	powershell.exe
3284	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3284	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83
PID 3284 wrote to memory of 2468	3284	powershell.exe	83

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e7476f5c2d8d802c0737d9f7d92d0c53.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3284
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\jsc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2468 -s 1296
    3⤵
    - Program crash
    PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 2468 -ip 2468
1⤵
PID:1104

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vrkevjgn.2sv.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2468-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2468-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2468-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2468-16-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2468-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2468-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3284-10-0x00000162BB780000-0x00000162BB7A2000-memory.dmp

Filesize
136KB

Download
memory/3284-11-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/3284-12-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download
memory/3284-13-0x00000162BB770000-0x00000162BB786000-memory.dmp

Filesize
88KB

Download
memory/3284-0-0x00007FFFAEA13000-0x00007FFFAEA15000-memory.dmp

Filesize
8KB

Download
memory/3284-20-0x00007FFFAEA10000-0x00007FFFAF4D1000-memory.dmp

Filesize
10.8MB

Download