d59748d0704012743d639589ed01683376b2e38c834e4f7b3e35a0cc10d8e7ae

Analysis

max time kernel
150s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
29/05/2024, 15:37

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General

Target

2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe
Size

31KB
MD5

8c818a7f271261438a5fecc5efe7b910
SHA1

6bdb9d103d196b9de6e7928eed31a8b8e8acacdb
SHA256

d59748d0704012743d639589ed01683376b2e38c834e4f7b3e35a0cc10d8e7ae
SHA512

d6114c95d94aa83fe76b757e63648f9df426aa8e22817292bcdd7eb189c85d2768ae415d752dedfd742af558d494d3b023d56e2437c0121011a7a5f22ac5b1cf
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+U8Ss87vhD0:b/yC4GyNM01GuQMNXum+NSnD0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023297-12.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-1-5-21-4018855536-2201274732-320770143-1000\Control Panel\International\Geo\Nation	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2268	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 4948 wrote to memory of 2268	4948	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	81
PID 4948 wrote to memory of 2268	4948	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	81
PID 4948 wrote to memory of 2268	4948	2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_8c818a7f271261438a5fecc5efe7b910_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:2268

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
31KB

MD5
2cc419d188f3bd80bc3f169b4d3c9f20

SHA1
cfd310e724c65c9e0061d450af9643cd98ce2e94

SHA256
cc930a5c4e23edbc89a7a9f64f2236bd06cc2a102a2e8476da0579bbe377bd3d

SHA512
867c6ed018ba63e2fb1942e0081eaa6d07ebe4e7484da295f23bbe49c13cca507f3f8f17cf80e6be4c2645573ebb8447bd737def1369f51c1546e4f25b5e673f

Download Submit
memory/2268-25-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4948-0-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download
memory/4948-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/4948-8-0x0000000002D60000-0x0000000002D66000-memory.dmp

Filesize
24KB

Download