oski | 3f13831e1c53ad73dd5eeab6e5a955a51e8b2a4d75ea29531177b084f8162ea6

General

Target

731fb33c344d0a0d98302ee1f9183851.ps1
Size

656KB
MD5

731fb33c344d0a0d98302ee1f9183851
SHA1

32648326d364cca4bfb28c5f2a8870fd87076f9b
SHA256

3f13831e1c53ad73dd5eeab6e5a955a51e8b2a4d75ea29531177b084f8162ea6
SHA512

6ac52b0f5994b70158a17ba39c9638bb1acab4b6c8b5faa2e5fe0fe0bc2fc893a5b116eb913455b8adea6fe65f358f0913ec7d8c7d998d542fe1e996cec1c54e
SSDEEP

12288:EZjw0RJ9u5ILYDxD3fxYehza/tw64d8TVkc5A+:g3bTmr+

Score

10^/10

oski infostealer

Malware Config

Extracted

Family

oski

C2

/103.114.107.28/l808/

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 2740 set thread context of 4436	2740	powershell.exe	92

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4700	4436	WerFault.exe	92

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2740	powershell.exe
2740	powershell.exe
2740	powershell.exe
2740	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2740	powershell.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 3740	2740	powershell.exe	93
PID 2740 wrote to memory of 3740	2740	powershell.exe	93
PID 2740 wrote to memory of 3740	2740	powershell.exe	93
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92
PID 2740 wrote to memory of 4436	2740	powershell.exe	92

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\731fb33c344d0a0d98302ee1f9183851.ps1
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2740
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  #cmd
  2⤵
  PID:4436
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 4436 -s 1112
    3⤵
    - Program crash
    PID:4700
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  #cmd
  2⤵
  PID:3740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4436 -ip 4436
1⤵
PID:1884

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_os5jme0c.vsd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2740-60-0x00007FF97DBA0000-0x00007FF97E661000-memory.dmp

Filesize
10.8MB

Download
memory/2740-17-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-11-0x000001F47F5F0000-0x000001F47F600000-memory.dmp

Filesize
64KB

Download
memory/2740-12-0x000001F47F5F0000-0x000001F47F600000-memory.dmp

Filesize
64KB

Download
memory/2740-14-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-19-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-21-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-53-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-31-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-49-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-54-0x000001F400A20000-0x000001F400A21000-memory.dmp

Filesize
4KB

Download
memory/2740-56-0x000001F47F5F0000-0x000001F47F600000-memory.dmp

Filesize
64KB

Download
memory/2740-15-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-23-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-25-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-5-0x000001F47F770000-0x000001F47F792000-memory.dmp

Filesize
136KB

Download
memory/2740-13-0x000001F400A00000-0x000001F400A26000-memory.dmp

Filesize
152KB

Download
memory/2740-10-0x00007FF97DBA0000-0x00007FF97E661000-memory.dmp

Filesize
10.8MB

Download
memory/2740-51-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-47-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-45-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-43-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-41-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-39-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-37-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-35-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-33-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-29-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/2740-27-0x000001F400A00000-0x000001F400A20000-memory.dmp

Filesize
128KB

Download
memory/4436-61-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4436-62-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4436-59-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4436-55-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/4436-65-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download

Analysis

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