50ddca7195a551ba532e3467f7ac9bfa45d12cd017dd2018b9b237c76d91b5f5

Analysis

max time kernel
147s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15-03-2024 15:51

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General

Target

2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe
Size

61KB
MD5

4c727c7fc4ff68d8bc1d85b051908c7b
SHA1

3c3ac7861456dcec1d7ec4c7b7aeb87dcc558f63
SHA256

50ddca7195a551ba532e3467f7ac9bfa45d12cd017dd2018b9b237c76d91b5f5
SHA512

c5c9c55ac3ff91d2a9ebb4ee74ce7d8ce1294337bf7a61954cf8f29d96f00ff68e70eb7ef5dafb15d75730f28b8b9c9c0bc3857d678a43999db34a4fdfead3ee
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/xblzoj:X6a+SOtEvwDpjBrOm

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00050000000224ff-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00050000000224ff-12.dat	CryptoLocker_set1

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-1-5-21-609813121-2907144057-1731107329-1000\Control Panel\International\Geo\Nation	2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
240	asih.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 1820 wrote to memory of 240	1820	2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe	91
PID 1820 wrote to memory of 240	1820	2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe	91
PID 1820 wrote to memory of 240	1820	2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe	91

C:\Users\Admin\AppData\Local\Temp\2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_4c727c7fc4ff68d8bc1d85b051908c7b_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1820
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:240

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\asih.exe

Filesize
62KB

MD5
104f684ca9955e9a05521b3fbcb7d64a

SHA1
8528672c531d2b585c5d791d70087b8937cf88dc

SHA256
30e3039b7f205e64b1f2631ec7156f62739d07ced88589041d86399268f4262e

SHA512
75c6615d236877708cff8a882e1a8b2f98f1e2c204b24ab484b027733799203707c288ddd5a5de9d7ebbd11a0eac544ae6b7363bdc733e382cebbda001a2ce6a

Download Submit
memory/240-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/240-18-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/1820-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1820-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/1820-2-0x0000000000850000-0x0000000000856000-memory.dmp

Filesize
24KB

Download