50779de236ed193b90d5ae419ebad078d806eed5264958ba8956e05b828b6462

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
06/04/2024, 10:59

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe
Size

131KB
MD5

cdd6f44c7dd3a1131108ba7e58a3d675
SHA1

c693421d2d0644d102b48412f8d33921c58ce21a
SHA256

50779de236ed193b90d5ae419ebad078d806eed5264958ba8956e05b828b6462
SHA512

68ff50c26d5c94029bbc0725168077b2d68ae3bce863c78ecab5e6734a3f41e2b80d806654b449a790ce1fe5211ad8a6aa59646c6f6b75094f80a41b4bf9ba31
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgp699GNtL1eaa6:V6a+pOtEvwDpjtzU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023177-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023177-12.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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3920	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 1812 wrote to memory of 3920	1812	2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe	84
PID 1812 wrote to memory of 3920	1812	2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe	84
PID 1812 wrote to memory of 3920	1812	2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-06_cdd6f44c7dd3a1131108ba7e58a3d675_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1812
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3920

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\asih.exe

Filesize
132KB

MD5
250dfb35b429fdb438f198174c904b3c

SHA1
ef79be13cfe6a897366d2b1279749cdaac9941bc

SHA256
e577d0b6ace90f6ea307abe11675b21002ad63d4afb80729b88dbdf54116ee4b

SHA512
465cf63eea3e62a27f8accd2732cc0c4a8e56d23d02308a4f19587046e7248ac52c15d26cbac29b7ba68058b30d7589741207acaad6f51081a7825100572f22a

Download Submit
memory/1812-2-0x0000000000520000-0x0000000000526000-memory.dmp

Filesize
24KB

Download
memory/1812-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1812-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3920-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3920-17-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download