oski | ad3b313a244216f2b1351bae0e8c7e62292c4fe657670a6a604619673236508f

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/03/2024, 03:14

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General

Target
b3a18b4fa0d0ea832e9807e265669977.ps1
Size 421KB
Sample240305-drkdcsdh66
SHA256 ad3b313a244216f2b1351bae0e8c7e62292c4fe657670a6a604619673236508f
MD5 b3a18b4fa0d0ea832e9807e265669977
SHA1 72a2cae6bb16f9ec097fcf09e6ca2691e561cc9e
SHA512 31c5eb719f524cd90be5a0e86adaba0e247ddbfba5b45dd1abeda2e4c79fe27eaf8193c63fd1c5c57fa331a55ca84e772b1f9bb5013a1447ec8b1d3298052083
SSDEEP 12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64sL68:q3n
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l1010/

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 3588 set thread context of 4720	3588	powershell.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3020	4720	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3588	powershell.exe
3588	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3588	powershell.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90
PID 3588 wrote to memory of 4720	3588	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b3a18b4fa0d0ea832e9807e265669977.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3588
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:4720
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4720 -s 1104
    3⤵
    - Program crash
    PID:3020

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 4720 -ip 4720
1⤵
PID:1616

Network

MITRE ATT&CK Matrix

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Downloads

__PSScriptPolicyTest_cktyt043.ami.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_cktyt043.ami.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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memory/3588-5-0x0000023771E80000-0x0000023771EA2000-memory.dmp

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memory/3588-10-0x00007FFD292A0000-0x00007FFD29D61000-memory.dmp

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memory/3588-11-0x0000023771ED0000-0x0000023771EE0000-memory.dmp

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memory/3588-12-0x0000023771EB0000-0x0000023771EBA000-memory.dmp

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memory/3588-17-0x00007FFD292A0000-0x00007FFD29D61000-memory.dmp

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memory/4720-13-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4720-16-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4720-18-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4720-19-0x0000000000400000-0x0000000000438000-memory.dmp

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memory/4720-22-0x0000000000400000-0x0000000000438000-memory.dmp

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