629d7370d0c761234400ce6cd65eef3e1b974df6129e6e3bc7158a1d3ab9a3d0

Analysis

max time kernel
192s
max time network
208s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2023 19:07

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General

Target

36bdda43e73997a8cf45bb551d74a351.exe
Size

113KB
MD5

36bdda43e73997a8cf45bb551d74a351
SHA1

b343cc61e39d7cfd27bd4d081c807f37522a5531
SHA256

629d7370d0c761234400ce6cd65eef3e1b974df6129e6e3bc7158a1d3ab9a3d0
SHA512

b9bb0f8a53e556684c29c3d578276d0384ee15aaf507a6dc76018c8f8da26f778bd265422565519d2a2b0535c0f22993ea774e46674f0f7da42705986e532504
SSDEEP

3072:aCU63Qs3SnhpLYTXPWXWT7QBTG3EUm9y9UFADUZD19:OeOZmiWEUmY9U6Di

Score

8^/10

persistence

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	36bdda43e73997a8cf45bb551d74a351.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WinUpdaterstd = "C:\\Windows\\WinUpdaterstd\\svchost.exe"	36bdda43e73997a8cf45bb551d74a351.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-1-5-21-635608581-3370340891-292606865-1000\Control Panel\International\Geo\Nation	36bdda43e73997a8cf45bb551d74a351.exe

Executes dropped EXE 1 IoCs

pid	Process
2044	svchost.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\WinUpdaterstd\svchost.exe	36bdda43e73997a8cf45bb551d74a351.exe
File opened for modification	C:\Windows\WinUpdaterstd\svchost.exe	36bdda43e73997a8cf45bb551d74a351.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1304 wrote to memory of 2044	1304	36bdda43e73997a8cf45bb551d74a351.exe	90
PID 1304 wrote to memory of 2044	1304	36bdda43e73997a8cf45bb551d74a351.exe	90
PID 1304 wrote to memory of 2044	1304	36bdda43e73997a8cf45bb551d74a351.exe	90

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	36bdda43e73997a8cf45bb551d74a351.exe

C:\Users\Admin\AppData\Local\Temp\36bdda43e73997a8cf45bb551d74a351.exe
"C:\Users\Admin\AppData\Local\Temp\36bdda43e73997a8cf45bb551d74a351.exe"
1⤵
- Adds policy Run key to start application
- Checks computer location settings
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
- System policy modification
PID:1304
- C:\Windows\WinUpdaterstd\svchost.exe
  "C:\Windows\WinUpdaterstd\svchost.exe"
  2⤵
  - Executes dropped EXE
  PID:2044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\WinUpdaterstd\svchost.exe

Filesize
113KB

MD5
36bdda43e73997a8cf45bb551d74a351

SHA1
b343cc61e39d7cfd27bd4d081c807f37522a5531

SHA256
629d7370d0c761234400ce6cd65eef3e1b974df6129e6e3bc7158a1d3ab9a3d0

SHA512
b9bb0f8a53e556684c29c3d578276d0384ee15aaf507a6dc76018c8f8da26f778bd265422565519d2a2b0535c0f22993ea774e46674f0f7da42705986e532504

Download Submit
memory/1304-7-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-9-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-10-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-11-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-12-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-13-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-14-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-15-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-16-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-17-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-18-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download
memory/2044-19-0x0000000000400000-0x0000000000422000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads