oski | 985016101e5efecfa67dd1e2c73776d1a99c7967251b3a3c7e9008b7e31279f3

Analysis

max time kernel
130s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
21-12-2023 22:39

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General

Target

177f321e3e3780aeff7954abf45caf77.ps1
Size

421KB
MD5

177f321e3e3780aeff7954abf45caf77
SHA1

4d26ed973a1a3dc7d8cb938b9d73a2da065a8862
SHA256

985016101e5efecfa67dd1e2c73776d1a99c7967251b3a3c7e9008b7e31279f3
SHA512

fe387cba2b27b403082c09e0e8ee5f9c126ca37a583eaa93fe10e66ea6fd2c78a978f6893488e47bdfb5fc51a43d7f285f15e32be90ff004263aa5855f2aef58
SSDEEP

12288:+Zjw0RJ9u5ILYDxD3fxYehza/tw64UL68:q3v

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

/103.114.107.28/l37/

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 4332 set thread context of 2244	4332	powershell.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2232	2244	WerFault.exe	90

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4332	powershell.exe
4332	powershell.exe
4332	powershell.exe
4332	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4332	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4332 wrote to memory of 4768	4332	powershell.exe	88
PID 4332 wrote to memory of 4768	4332	powershell.exe	88
PID 4332 wrote to memory of 4768	4332	powershell.exe	88
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90
PID 4332 wrote to memory of 2244	4332	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\177f321e3e3780aeff7954abf45caf77.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4332
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:4768
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
  "{path}"
  2⤵
  PID:2244
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2244 -s 1100
    3⤵
    - Program crash
    PID:2232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2244 -ip 2244
1⤵
PID:4820

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zg43dpja.xfo.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2244-15-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2244-24-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2244-20-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2244-19-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2244-18-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4332-12-0x00000242B70C0000-0x00000242B70D0000-memory.dmp

Filesize
64KB

Download
memory/4332-14-0x000002429EC70000-0x000002429EC7A000-memory.dmp

Filesize
40KB

Download
memory/4332-13-0x00000242B70C0000-0x00000242B70D0000-memory.dmp

Filesize
64KB

Download
memory/4332-11-0x00000242B70C0000-0x00000242B70D0000-memory.dmp

Filesize
64KB

Download
memory/4332-21-0x00007FFC37930000-0x00007FFC383F1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-10-0x00007FFC37930000-0x00007FFC383F1000-memory.dmp

Filesize
10.8MB

Download
memory/4332-5-0x00000242B7240000-0x00000242B7262000-memory.dmp

Filesize
136KB

Download