oski | 2dc9af3230375f72ebcd07c13ec2c1a6ed4786bdc1beebb0cec324ee0ddc7587

Analysis

max time kernel
149s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
22-12-2023 12:57

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General

Target

936e261d17eb17f3d72d1b95460f6956.ps1
Size

485KB
MD5

936e261d17eb17f3d72d1b95460f6956
SHA1

26f6e4b3c1cfc7b9cc502ee7a0f5faaa9261a6b2
SHA256

2dc9af3230375f72ebcd07c13ec2c1a6ed4786bdc1beebb0cec324ee0ddc7587
SHA512

e401d49013edb278b8b34f480b7f5d08029fd541b34442bed34501f694555ec6808e37620a4083c9662b18ea3dfc6317f7eec300d79bc28364d6b69733eaec51
SSDEEP

12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Sigu:q3Hu

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l20/

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 4076 set thread context of 4784	4076	powershell.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4320	4784	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4076	powershell.exe
4076	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4076	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90
PID 4076 wrote to memory of 4784	4076	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\936e261d17eb17f3d72d1b95460f6956.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4076
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4784
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4784 -s 1200
    3⤵
    - Program crash
    PID:4320

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 4784 -ip 4784
1⤵
PID:2636

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vfkz401d.snb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4076-18-0x00007FFA828F0000-0x00007FFA833B1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-10-0x00007FFA828F0000-0x00007FFA833B1000-memory.dmp

Filesize
10.8MB

Download
memory/4076-11-0x000001CFE2440000-0x000001CFE2450000-memory.dmp

Filesize
64KB

Download
memory/4076-12-0x000001CFE2440000-0x000001CFE2450000-memory.dmp

Filesize
64KB

Download
memory/4076-13-0x000001CFC9E10000-0x000001CFC9E22000-memory.dmp

Filesize
72KB

Download
memory/4076-0-0x000001CFC9DE0000-0x000001CFC9E02000-memory.dmp

Filesize
136KB

Download
memory/4784-14-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4784-17-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4784-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4784-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4784-21-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4784-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download