4903af6f93e8071209af7b5ba37337d22c72676fc3ccc9b2e1313b0a384f1995

Analysis

max time kernel
101s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20231023-en
resource tags

arch:x64arch:x86image:win10v2004-20231023-enlocale:en-usos:windows10-2004-x64system
submitted
16/11/2023, 22:20

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General

Target

wininitoverwriter.exe
Size

1.1MB
MD5

6b10b1ccb93e68986628cc285ea034df
SHA1

b2da46a7d5542110691a44bca53005aa94bfc795
SHA256

4903af6f93e8071209af7b5ba37337d22c72676fc3ccc9b2e1313b0a384f1995
SHA512

e8b7d3ab9d1e56532661911e97f1345743a2e47afb3e47db070d9b5b29aaf3e550f86bfb50a5c54f624446f07350e99e822fb1a5d305741b9086d6b21e7b8da2
SSDEEP

24576:ldz8yaFhsKrh0hg6TKnHYxERyMHdRE3LgLAOh7bCLsgi8fBi6dS:kkPKyqyuE3tOlmsh8f

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3972	takeown.exe
2180	icacls.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2231940048-779848787-2990559741-1000\Control Panel\International\Geo\Nation	wininitoverwriter.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3972	takeown.exe
2180	icacls.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeTakeOwnershipPrivilege	3972	takeown.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 1716 wrote to memory of 3316	1716	wininitoverwriter.exe	84
PID 1716 wrote to memory of 3316	1716	wininitoverwriter.exe	84
PID 3316 wrote to memory of 3972	3316	cmd.exe	86
PID 3316 wrote to memory of 3972	3316	cmd.exe	86
PID 3316 wrote to memory of 2180	3316	cmd.exe	87
PID 3316 wrote to memory of 2180	3316	cmd.exe	87

C:\Users\Admin\AppData\Local\Temp\wininitoverwriter.exe
"C:\Users\Admin\AppData\Local\Temp\wininitoverwriter.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1716
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /k takeown /f C:\Windows\System32 && icacls C:\Windows\System32 /grant "%username%:F"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3316
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:3972
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32 /grant "Admin:F"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:2180

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File and Directory Permissions Modification

T1222

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1716-0-0x000001AC6D0B0000-0x000001AC6D1D8000-memory.dmp

Filesize
1.2MB

Download
memory/1716-1-0x00007FFE6FF40000-0x00007FFE70A01000-memory.dmp

Filesize
10.8MB

Download
memory/1716-2-0x000001AC6D5E0000-0x000001AC6D5F0000-memory.dmp

Filesize
64KB

Download
memory/1716-3-0x00007FFE6FF40000-0x00007FFE70A01000-memory.dmp

Filesize
10.8MB

Download
memory/1716-4-0x000001AC6D5E0000-0x000001AC6D5F0000-memory.dmp

Filesize
64KB

Download