647fe820d5315d3eeb7feed32f083c038e743cb8a4c32281269499126621c8f6

Analysis

max time kernel
142s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231020-en
resource tags

arch:x64arch:x86image:win10v2004-20231020-enlocale:en-usos:windows10-2004-x64system
submitted
16/11/2023, 22:20

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General

Target

shutdownwin10.exe
Size

241KB
MD5

89e95190fc60f8f5b624b701a0f63068
SHA1

a36ec9dfed535e4b7715725e59d451648f6b644c
SHA256

647fe820d5315d3eeb7feed32f083c038e743cb8a4c32281269499126621c8f6
SHA512

0f44f96aef70dd86ff31fc6252137bbdcb270c885e84d133e016f86a39eb0bd86daf8d4b82246189aacf7559ecc31a4f8ac78ce3ba2294696d86f8f0a524ad3a
SSDEEP

6144:ebRdyCIzMEZ4DQ0SsG4kZ6dyCIzMEZ4DQ0SsG4iq:xlzMKwAZ1lzMKw/

Score

8^/10

discovery exploit

Malware Config

Signatures

Possible privilege escalation attempt 2 IoCs

exploit

pid	Process
3224	takeown.exe
5080	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-1-5-21-1873812795-1433807462-1429862679-1000\Control Panel\International\Geo\Nation	shutdownwin10.exe

Modifies file permissions 1 TTPs 2 IoCs

discovery

File and Directory Permissions Modification

T1222

pid	Process
3224	takeown.exe
5080	icacls.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\shutdown.exe	shutdownwin10.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	3224	takeown.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 5036 wrote to memory of 928	5036	shutdownwin10.exe	86
PID 5036 wrote to memory of 928	5036	shutdownwin10.exe	86
PID 928 wrote to memory of 3224	928	cmd.exe	88
PID 928 wrote to memory of 3224	928	cmd.exe	88
PID 928 wrote to memory of 5080	928	cmd.exe	89
PID 928 wrote to memory of 5080	928	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\shutdownwin10.exe
"C:\Users\Admin\AppData\Local\Temp\shutdownwin10.exe"
1⤵
- Checks computer location settings
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
PID:5036
- 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:928
- - C:\Windows\system32\takeown.exe
    takeown /f C:\Windows\System32
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    - Suspicious use of AdjustPrivilegeToken
    PID:3224
- - C:\Windows\system32\icacls.exe
    icacls C:\Windows\System32 /grant "Admin:F"
    3⤵
    - Possible privilege escalation attempt
    - Modifies file permissions
    PID:5080

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/5036-0-0x00000145DAD30000-0x00000145DAD72000-memory.dmp

Filesize
264KB

Download
memory/5036-1-0x00007FFB48950000-0x00007FFB49411000-memory.dmp

Filesize
10.8MB

Download
memory/5036-2-0x00000145DB180000-0x00000145DB190000-memory.dmp

Filesize
64KB

Download
memory/5036-5-0x00007FFB48950000-0x00007FFB49411000-memory.dmp

Filesize
10.8MB

Download