454ece330cc86117b460bacba94aa486423960fede869170443aa2ac10728449

Analysis

max time kernel
150s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05/04/2024, 03:24

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General

Target

2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe
Size

33KB
MD5

002b8f06e3a17fe2e11c8f4a98b519b9
SHA1

588a0dd8e589db6e4747063b9203f52c82bec6bf
SHA256

454ece330cc86117b460bacba94aa486423960fede869170443aa2ac10728449
SHA512

865ad6e706219888ae1c441bff36d8425d3f4cbf1ebbc19bb5cc97b3a9180b6c3f3d605900ea692867b524b45327ea00afa65d0ba449f8981b30dd4ab7637ff6
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznUsD5h5:b/yC4GyNM01GuQMNXw2PSjZ/5

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00080000000231fa-12.dat	CryptoLocker_rule2

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-1-5-21-513485977-2495024337-1260977654-1000\Control Panel\International\Geo\Nation	2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2868	retln.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 3228 wrote to memory of 2868	3228	2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe	88
PID 3228 wrote to memory of 2868	3228	2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe	88
PID 3228 wrote to memory of 2868	3228	2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_002b8f06e3a17fe2e11c8f4a98b519b9_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3228
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2868

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
33KB

MD5
14e8b6719e2894aebb6d9b79063d4c9c

SHA1
c6100979e848bf0d81825d067362840c6bf41832

SHA256
7a8197fa94e0ecc2af3ef4b2bf80dcef6cfc1b1da333df6608058e730aec8e24

SHA512
7604cbeb0c6afc8170f228d465ee7a72d2eb416c608f2e971bcba3dc035b562c93b09ab99a124bc51c600143ba7e1c9a3fa0e6b22fc3535300ea2e78718c52b7

Download Submit
memory/2868-20-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/3228-0-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3228-1-0x0000000002250000-0x0000000002256000-memory.dmp

Filesize
24KB

Download
memory/3228-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download