oski | 3020a2995a18515860d4530d32cdecf88c04d14bd0d548b9d61302a572f8efc1

Analysis

max time kernel
148s
max time network
130s
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, 16:42

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General

Target
f732f398ed8470ab3d7026e8efcea306.ps1
Size 485KB
Sample231222-t7x76aaadr
SHA256 3020a2995a18515860d4530d32cdecf88c04d14bd0d548b9d61302a572f8efc1
MD5 f732f398ed8470ab3d7026e8efcea306
SHA1 464cea61f64d583e42065f54b6242d361ffdd2b0
SHA512 b8b9c1bde2a70acbd9c7188d7162ba5fb6c808e676ccc370a9babb450449602f383d2d47c8280bb33f0067279175d36e27d0416d34b1210229370024c06683a2
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Migu:q3pu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l3030/

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 2252 set thread context of 3748	2252	powershell.exe	55

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3464	3748	WerFault.exe	55

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2252	powershell.exe
2252	powershell.exe
2252	powershell.exe
2252	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2252 wrote to memory of 3168	2252	powershell.exe	56
PID 2252 wrote to memory of 3168	2252	powershell.exe	56
PID 2252 wrote to memory of 3168	2252	powershell.exe	56
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55
PID 2252 wrote to memory of 3748	2252	powershell.exe	55

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f732f398ed8470ab3d7026e8efcea306.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2252
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:3748
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 932
    3⤵
    - Program crash
    PID:3464
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:3168

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 3748 -ip 3748
1⤵
PID:4248

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_0gd2ttxz.mvq.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0gd2ttxz.mvq.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2252-9-0x000001813F4C0000-0x000001813F4E2000-memory.dmp

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memory/2252-10-0x00007FFE27BA0000-0x00007FFE28661000-memory.dmp

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memory/2252-11-0x000001813EAA0000-0x000001813EAB0000-memory.dmp

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memory/2252-12-0x000001813EAA0000-0x000001813EAB0000-memory.dmp

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memory/2252-13-0x000001813EBD0000-0x000001813EBE2000-memory.dmp

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memory/2252-18-0x00007FFE27BA0000-0x00007FFE28661000-memory.dmp

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memory/3748-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3748-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3748-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3748-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3748-23-0x0000000000400000-0x0000000000438000-memory.dmp

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