oski | ea0157bc1e7b2178b75854a5fa5f139e4b94da24fdfb6710b69bc0318c25a379

Analysis

max time kernel
149s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
02/02/2024, 23:45

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General

Target
8ad68f5c7dd4d299af03f3a53d3eea8f.ps1
Size 485KB
Sample240202-3rx2wsedfk
SHA256 ea0157bc1e7b2178b75854a5fa5f139e4b94da24fdfb6710b69bc0318c25a379
MD5 8ad68f5c7dd4d299af03f3a53d3eea8f
SHA1 16413b33f91a5ac23b9afdce7b639aa5749b2a06
SHA512 774e43244601d378ae81cb332ab464b4ff19bb4d4441910eab59a5b83dde15fa27712a339ac7e7517e9345fab5948188c5b1071ef46ce2bd91313aee6f9c2297
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Migu:q3Fu
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l11/

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 3376 set thread context of 1704	3376	powershell.exe	86

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4300	1704	WerFault.exe	86

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3376	powershell.exe
3376	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3376	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86
PID 3376 wrote to memory of 1704	3376	powershell.exe	86

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\8ad68f5c7dd4d299af03f3a53d3eea8f.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3376
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:1704
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1704 -s 1228
    3⤵
    - Program crash
    PID:4300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1704 -ip 1704
1⤵
PID:4732

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

__PSScriptPolicyTest_pxrr5ugr.0yc.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pxrr5ugr.0yc.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/1704-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1704-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1704-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1704-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1704-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/1704-24-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/3376-10-0x00007FFFBF2C0000-0x00007FFFBFD81000-memory.dmp

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memory/3376-11-0x0000017602C60000-0x0000017602C70000-memory.dmp

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memory/3376-12-0x0000017602C60000-0x0000017602C70000-memory.dmp

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memory/3376-13-0x0000017602CB0000-0x0000017602CC2000-memory.dmp

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memory/3376-18-0x00007FFFBF2C0000-0x00007FFFBFD81000-memory.dmp

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memory/3376-6-0x0000017602CE0000-0x0000017602D02000-memory.dmp

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