oski | 9a784909bd9a8ec2d179087e6dc8635fa4508be4d04afbe4a4c30a4922ee6a7d

Analysis

max time kernel
149s
max time network
150s
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, 13:39

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General

Target
a939544768ca68a7346baa3619bcd80a.ps1
Size 485KB
Sample231222-qydklsdbd2
SHA256 9a784909bd9a8ec2d179087e6dc8635fa4508be4d04afbe4a4c30a4922ee6a7d
MD5 a939544768ca68a7346baa3619bcd80a
SHA1 1b2f6e5eab4277e189ad5af04d83b92ff577af91
SHA512 9ee7baa5950c17e03926e2b792757073f6f4f0e6e093dc83cc52bff77ac033d7ba4849405d5704d52118a25b9dd941346f7a0c9cb6a397fbe5a8135cdd81d07d
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Eigu:q3hu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l3131/

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 2504 set thread context of 4152	2504	powershell.exe	61

Program crash 1 IoCs

pid	pid_target	Process	procid_target
880	4152	WerFault.exe	61

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2504	powershell.exe
2504	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2504	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61
PID 2504 wrote to memory of 4152	2504	powershell.exe	61

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\a939544768ca68a7346baa3619bcd80a.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2504
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4152
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4152 -s 1100
    3⤵
    - Program crash
    PID:880

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4152 -ip 4152
1⤵
PID:560

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_0mqjmpvg.joy.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0mqjmpvg.joy.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2504-14-0x0000028B7B060000-0x0000028B7B072000-memory.dmp

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memory/2504-11-0x0000028B78C00000-0x0000028B78C10000-memory.dmp

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memory/2504-10-0x00007FFD9DE20000-0x00007FFD9E8E1000-memory.dmp

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memory/2504-12-0x0000028B78C00000-0x0000028B78C10000-memory.dmp

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memory/2504-13-0x0000028B78C00000-0x0000028B78C10000-memory.dmp

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memory/2504-9-0x0000028B7ADF0000-0x0000028B7AE12000-memory.dmp

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memory/2504-20-0x00007FFD9DE20000-0x00007FFD9E8E1000-memory.dmp

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memory/4152-15-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4152-18-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4152-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4152-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4152-24-0x0000000000400000-0x0000000000438000-memory.dmp

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