oski | 2476e53d066a717d8627e08d13e7d2983e6ba9ecd76a8c3968273845f7996bde

Analysis

max time kernel
147s
max time network
167s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
30-12-2023 08:21

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General

Target

134a8e6481ac306a18cf1b20baaf8289.ps1
Size

421KB
MD5

134a8e6481ac306a18cf1b20baaf8289
SHA1

5653dd3516e2d4dec7b3c711ebe0e1ada51dc930
SHA256

2476e53d066a717d8627e08d13e7d2983e6ba9ecd76a8c3968273845f7996bde
SHA512

4ad91e37428da130a6d0766e66f590550088d6757ac7e13266b1c38fbc1e5b1f4ba8e1225db26af98cb119ccdeb56c882291ab628eb6560ebce8f62ed66bc5bf
SSDEEP

12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64BL68:q3W

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l32/

Signatures

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3428 set thread context of 1816	3428	powershell.exe	92

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4464	1816	WerFault.exe	92
2220	1816	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3428	powershell.exe
3428	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3428	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 3428 wrote to memory of 1816	3428	powershell.exe	92
PID 1816 wrote to memory of 4464	1816	MSBuild.exe	99
PID 1816 wrote to memory of 4464	1816	MSBuild.exe	99
PID 1816 wrote to memory of 4464	1816	MSBuild.exe	99

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\134a8e6481ac306a18cf1b20baaf8289.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3428
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1816
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 1112
    3⤵
    - Program crash
    PID:4464
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1816 -s 1112
    3⤵
    - Program crash
    PID:2220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1816 -ip 1816
1⤵
PID:4692

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rqsymcnu.vi2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1816-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1816-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1816-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1816-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1816-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/1816-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/3428-10-0x0000019B60830000-0x0000019B6083A000-memory.dmp

Filesize
40KB

Download
memory/3428-11-0x00007FFB68FB0000-0x00007FFB69A71000-memory.dmp

Filesize
10.8MB

Download
memory/3428-13-0x0000019B608D0000-0x0000019B608E0000-memory.dmp

Filesize
64KB

Download
memory/3428-12-0x0000019B608D0000-0x0000019B608E0000-memory.dmp

Filesize
64KB

Download
memory/3428-17-0x00007FFB68FB0000-0x00007FFB69A71000-memory.dmp

Filesize
10.8MB

Download
memory/3428-9-0x0000019B48260000-0x0000019B48282000-memory.dmp

Filesize
136KB

Download