54605d21ce4c018aa3d17738f84df84e3a2889680a3082023ef5748f2d49766b

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05/09/2024, 15:51

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General

Target

2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe
Size

41KB
MD5

a39af6887fe61eecee434985a79941e8
SHA1

168adcfe5f4adeab9b75f8907319f6cad1e70d1d
SHA256

54605d21ce4c018aa3d17738f84df84e3a2889680a3082023ef5748f2d49766b
SHA512

bea1a2ef43311d55e796258cb981537182b92529f00768a42dea57db61aad34862bb16cc576bcdd60df5e6df471156439a8f4ad5eef35da94c098dae53cbe206
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSzn1KkZCb9q8IujdxNX6vXzkm:b/yC4GyNM01GuQMNXw2PSj1Pqq8BOwm

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	2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4292	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	2024-09-05_a39af6887fe61eecee434985a79941e8_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 1048 wrote to memory of 4292	1048	2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe	92
PID 1048 wrote to memory of 4292	1048	2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe	92
PID 1048 wrote to memory of 4292	1048	2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe	92

C:\Users\Admin\AppData\Local\Temp\2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-05_a39af6887fe61eecee434985a79941e8_cryptolocker.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1048
- 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:4292

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=4396,i,7447299413640964517,4240724842020506306,262144 --variations-seed-version --mojo-platform-channel-handle=3944 /prefetch:8
1⤵
PID:384

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
41KB

MD5
8af677a6fb785292a65f9302a491fc16

SHA1
666fb0e616d26abed7c79e2d0e56e9a9b16f3ff4

SHA256
396ae4e00d2b24ceb6304f154884e01d3d1625ff0f6994227ecef2cb0c26cb92

SHA512
54e6dd0ce612169f843a40cb8caecc85c923bff4c9e322394e8fea2a917b7c2ffa4a88ff4abe870569962c001535b66fc8fc2436bb90e8485c066af95887ac6e

Download Submit
memory/1048-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1048-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1048-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4292-25-0x0000000002190000-0x0000000002196000-memory.dmp

Filesize
24KB

Download