oski | ee9eea9bc98b4cd4997db4775dd231172062bf3ebc4a2f8e41c287f6d414ebd3

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, 16:23

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General

Target
edb14699d2e6bd02ef56e3fbd740f278.ps1
Size 485KB
Sample231222-tv77lafccn
SHA256 ee9eea9bc98b4cd4997db4775dd231172062bf3ebc4a2f8e41c287f6d414ebd3
MD5 edb14699d2e6bd02ef56e3fbd740f278
SHA1 75eef64f372e80a4bf4c68790ac6a4a8cf780096
SHA512 1724cc7ddafe30d6ee74db356abb75d5a1ea14d226366a6bf650a2ae1cf5d9c023235b88e00fec4e5506c091cf2ca40978b2465de329a78624b76cff81ffff72
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64Figu:q32u
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

103.114.107.28/l18/

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 3988 set thread context of 4492	3988	powershell.exe	37

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4040	4492	WerFault.exe	37

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3988	powershell.exe
3988	powershell.exe
3988	powershell.exe
3988	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3988	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3988 wrote to memory of 3968	3988	powershell.exe	38
PID 3988 wrote to memory of 3968	3988	powershell.exe	38
PID 3988 wrote to memory of 3968	3988	powershell.exe	38
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37
PID 3988 wrote to memory of 4492	3988	powershell.exe	37

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\edb14699d2e6bd02ef56e3fbd740f278.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3988
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:4492
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4492 -s 688
    3⤵
    - Program crash
    PID:4040
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  #cmd
  2⤵
  PID:3968

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4492 -ip 4492
1⤵
PID:1256

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

__PSScriptPolicyTest_nagbj1ad.g0y.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nagbj1ad.g0y.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3988-18-0x00007FF95CDC0000-0x00007FF95D881000-memory.dmp

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memory/3988-10-0x00007FF95CDC0000-0x00007FF95D881000-memory.dmp

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memory/3988-12-0x0000021BF19A0000-0x0000021BF19B0000-memory.dmp

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memory/3988-11-0x0000021BF19A0000-0x0000021BF19B0000-memory.dmp

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memory/3988-13-0x0000021BD94A0000-0x0000021BD94B2000-memory.dmp

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memory/3988-5-0x0000021BF3B50000-0x0000021BF3B72000-memory.dmp

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memory/4492-14-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4492-20-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4492-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4492-17-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4492-21-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4492-24-0x0000000000400000-0x0000000000438000-memory.dmp

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