oski | f20d954062ff2bc2f6d8fb07d6b8393f50ad49510811b386cef7419c295c2a84

Analysis

max time kernel
1s
max time network
104s
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, 15:36

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General

Target
daf543db36758a68acc7aa0dfe15bed3.ps1
Size 421KB
Sample231222-s17btahffl
SHA256 f20d954062ff2bc2f6d8fb07d6b8393f50ad49510811b386cef7419c295c2a84
MD5 daf543db36758a68acc7aa0dfe15bed3
SHA1 acc96c5db5f0eba481ff05c94744e0c4043ce46a
SHA512 ec93789b5d2693a286b22bc1bd58f6f5c25843bd56723deee9d54a8877902c404a84b33b065f1dc4fa3dbf17b8001a843ca80c87d4af0eba4cd333547905cd56
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64aL68:q3t
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l17/

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 4252 set thread context of 5012	4252	powershell.exe	31

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3472	5012	WerFault.exe	31

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
4252	powershell.exe
4252	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4252	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31
PID 4252 wrote to memory of 5012	4252	powershell.exe	31

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\daf543db36758a68acc7aa0dfe15bed3.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4252
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:5012
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 5012 -s 652
    3⤵
    - Program crash
    PID:3472

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 5012 -ip 5012
1⤵
PID:4640

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_4vxtcikq.151.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_4vxtcikq.151.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/4252-0-0x00000195F8960000-0x00000195F8982000-memory.dmp

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memory/4252-12-0x00000195F68E0000-0x00000195F68F0000-memory.dmp

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memory/4252-11-0x00000195F68E0000-0x00000195F68F0000-memory.dmp

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memory/4252-10-0x00007FFE3AF90000-0x00007FFE3BA51000-memory.dmp

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memory/4252-19-0x00007FFE3AF90000-0x00007FFE3BA51000-memory.dmp

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memory/4252-13-0x00000195F68C0000-0x00000195F68CA000-memory.dmp

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memory/5012-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/5012-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/5012-18-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/5012-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/5012-21-0x0000000000400000-0x0000000000438000-memory.dmp

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