d050ac68365164bf4ac8e89fd21b28c53c06669db2c6d21b245627da5b454b2a

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
20/05/2024, 17:32

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe
Size

41KB
MD5

7eadca668e3064f21387f017e745bc31
SHA1

802432e38738e29261b16890670b280e62c73004
SHA256

d050ac68365164bf4ac8e89fd21b28c53c06669db2c6d21b245627da5b454b2a
SHA512

39729b3966c138294c30d97a74c4a68dc4c51d5d2e0bb3b76f17c7552890ea94f6e19da8bfc9eb164b69b3e9a05ad23cfeb6ba64527b9b897e166d550037b7e9
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznHzl6AJvDSuYlxujsFwV:b/yC4GyNM01GuQMNXw2PSjHPbSuYlaJV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00090000000233c1-12.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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4808	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 1312 wrote to memory of 4808	1312	2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe	84
PID 1312 wrote to memory of 4808	1312	2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe	84
PID 1312 wrote to memory of 4808	1312	2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_7eadca668e3064f21387f017e745bc31_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  PID:4808

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

Loading Replay Monitor...

Downloads

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

Filesize
42KB

MD5
387828b364045d0fc1de0ca5025c8341

SHA1
a7e2c70c5f9e6e8d1dfc2f553f81eae159dd0e3a

SHA256
f5181919e86feb59254733bb06e4f4052ff9deb3bf47c464623fb0b143a6b805

SHA512
e65d54468a7b0ab8d93602c863c7a83f6ef863606b3b2af07af5967e0c958456523e40572acb3cd18a6b568691e27467ca41f780684ed6a77ce4acc936b4871f

Download Submit
memory/1312-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/1312-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1312-8-0x0000000002EA0000-0x0000000002EA6000-memory.dmp

Filesize
24KB

Download
memory/4808-25-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download