cea31237d250935fb3e68ca5c859141b178f739244c78f24139f34a2709626d9

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
08/09/2024, 03:28

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General

Target

2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe
Size

44KB
MD5

40c4fec016956aca56011f8cc207b6b9
SHA1

cfc14f37cfd4981a1aeca53970be398c4149ba92
SHA256

cea31237d250935fb3e68ca5c859141b178f739244c78f24139f34a2709626d9
SHA512

db99dd067bb2ca4dd7d136ce640ede428388a75691782b203801fd9cf1cab62d068a8904bb08898a4e5b464b243341fad8aa182b2ad785931d9bbecb1fcfa465
SSDEEP

768:bQyC4GyNM01GuQMNXwXOQ69zbjlAAX5e9zG:bQpYayGiAizbR9XwzG

Score

7^/10

discovery

Malware Config

Signatures

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-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5112	retln.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retln.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 5112	1868	2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe	92
PID 1868 wrote to memory of 5112	1868	2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe	92
PID 1868 wrote to memory of 5112	1868	2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-08_40c4fec016956aca56011f8cc207b6b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:5112

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=1304,i,2727319350781907497,7925939240893079607,262144 --variations-seed-version --mojo-platform-channel-handle=4352 /prefetch:8
1⤵
PID:4128

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
44KB

MD5
91e74b27fc402155525ac43066c29299

SHA1
0bfc265248edcb40373740a68c8f966f998df578

SHA256
94c3231f04995c8435d4360b6571897c71b34955fa8ff390c18deace334f194f

SHA512
e42f8288c0800a47be6ee8ecb2b78e1ca89b6e00b6dd176f4e085c8aeb76a60df4b8df70a41ecfecd3da90a81cc76ff6f4c9e825c93f3d6cc1bebf51788b718a

Download Submit
memory/1868-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1868-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1868-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/5112-25-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download