oski | ad86961a4df9ed275fa5cbf709b6d394f992a531cf0762ff1de73ab832f91c5a

Analysis

max time kernel
136s
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, 13:11

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General

Target
9b2f171a482bb7a217bc5831a7dcbf1c.ps1
Size 485KB
Sample231222-qfcklaefen
SHA256 ad86961a4df9ed275fa5cbf709b6d394f992a531cf0762ff1de73ab832f91c5a
MD5 9b2f171a482bb7a217bc5831a7dcbf1c
SHA1 1ee718a4449be57fd88455a2de6150d6506057df
SHA512 6427bd1d42780b24a8b49f487d94e986cb84dfe4abd7361876520bf6d779f2aff3e667edfb577f4315d2804f23d44569c368f18b5ccb06a62beb71cc8061d6c1
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64figu:q3wu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l25/

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 2948 set thread context of 3820	2948	powershell.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4620	3820	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2948	powershell.exe
2948	powershell.exe
2948	powershell.exe
2948	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2948	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2948 wrote to memory of 2500	2948	powershell.exe	89
PID 2948 wrote to memory of 2500	2948	powershell.exe	89
PID 2948 wrote to memory of 2500	2948	powershell.exe	89
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90
PID 2948 wrote to memory of 3820	2948	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\9b2f171a482bb7a217bc5831a7dcbf1c.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2948
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:2500
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:3820
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 3820 -s 1100
    3⤵
    - Program crash
    PID:4620

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3820 -ip 3820
1⤵
PID:4004

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_rkp4alyv.vpj.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rkp4alyv.vpj.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/2948-14-0x0000022CEF380000-0x0000022CEF392000-memory.dmp

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memory/2948-10-0x00007FFAD4F20000-0x00007FFAD59E1000-memory.dmp

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memory/2948-12-0x0000022CEF370000-0x0000022CEF380000-memory.dmp

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memory/2948-11-0x0000022CEF370000-0x0000022CEF380000-memory.dmp

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memory/2948-13-0x0000022CEF370000-0x0000022CEF380000-memory.dmp

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memory/2948-5-0x0000022CF19A0000-0x0000022CF19C2000-memory.dmp

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memory/2948-20-0x00007FFAD4F20000-0x00007FFAD59E1000-memory.dmp

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memory/3820-15-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3820-18-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3820-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3820-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3820-24-0x0000000000400000-0x0000000000438000-memory.dmp

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