oski | c74dd60489c92b69bd23792a9a2fc5bd963de6781993a66e9b519d6317c93df2

Analysis

max time kernel
150s
max time network
152s
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, 16:30

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General

Target
f1a8247a688ebcb34d728f27ff8489dd.ps1
Size 421KB
Sample231222-tz97ragddn
SHA256 c74dd60489c92b69bd23792a9a2fc5bd963de6781993a66e9b519d6317c93df2
MD5 f1a8247a688ebcb34d728f27ff8489dd
SHA1 33857481b9c0807642983896744082620efc0de7
SHA512 35aee40dab7f1ec7ef5ba79feb70886518f899c8a5c2662e6e896e9c45099acf2593b9a14595bdac2132eb6d4be840b8a72176a138fe8766a555a1db9266ed0c
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64bL68:q3c
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l38/

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 2780 set thread context of 3840	2780	powershell.exe	94

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3584	3840	WerFault.exe	94

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2780	powershell.exe
2780	powershell.exe
2780	powershell.exe
2780	powershell.exe
2780	powershell.exe
2780	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2780	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2780 wrote to memory of 228	2780	powershell.exe	93
PID 2780 wrote to memory of 228	2780	powershell.exe	93
PID 2780 wrote to memory of 228	2780	powershell.exe	93
PID 2780 wrote to memory of 4388	2780	powershell.exe	95
PID 2780 wrote to memory of 4388	2780	powershell.exe	95
PID 2780 wrote to memory of 4388	2780	powershell.exe	95
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94
PID 2780 wrote to memory of 3840	2780	powershell.exe	94

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f1a8247a688ebcb34d728f27ff8489dd.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2780
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:228
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:3840
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3840 -s 1108
    3⤵
    - Program crash
    PID:3584
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:4388

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3840 -ip 3840
1⤵
PID:2736

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

__PSScriptPolicyTest_5ku0wse2.bqc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5ku0wse2.bqc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2780-5-0x000001FB6D7B0000-0x000001FB6D7D2000-memory.dmp

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memory/2780-10-0x00007FFB39C30000-0x00007FFB3A6F1000-memory.dmp

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memory/2780-11-0x000001FB6D800000-0x000001FB6D810000-memory.dmp

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memory/2780-12-0x000001FB6D800000-0x000001FB6D810000-memory.dmp

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memory/2780-13-0x000001FB6D1D0000-0x000001FB6D1DA000-memory.dmp

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memory/2780-18-0x00007FFB39C30000-0x00007FFB3A6F1000-memory.dmp

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memory/3840-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3840-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3840-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3840-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3840-23-0x0000000000400000-0x0000000000438000-memory.dmp

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