472ce7b28e3ffdc67f07b84b3b9b227f05fa813f9363bb976bb8a0ae2f16ba80

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
29/03/2024, 03:00

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General

Target

2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe
Size

73KB
MD5

6bb0b68534d4d640aa3d03e66841e20d
SHA1

6734b7cb14c8aedaf5662abf87356ebab41afa9d
SHA256

472ce7b28e3ffdc67f07b84b3b9b227f05fa813f9363bb976bb8a0ae2f16ba80
SHA512

e004bf776192385702e2097accbfb45c61e1b9b575cdc9b19bd505f988023b607f164f44f624f3ca31887ffdda502b50b97d7cac17ad879b533a0c1643fa55f6
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHMk:X6a+SOtEvwDpjBZYvQd2L

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022708-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0009000000022708-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2512	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 4400 wrote to memory of 2512	4400	2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe	87
PID 4400 wrote to memory of 2512	4400	2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe	87
PID 4400 wrote to memory of 2512	4400	2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_6bb0b68534d4d640aa3d03e66841e20d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4400
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2512

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
73KB

MD5
bc5efc22b612dcd03092f33ef867e10a

SHA1
25d759770c074f776886fcc63984a1f33d69f430

SHA256
4b0b0deecceca70c87abf6f3e402c3221429ed64a62e91dd66c153633672cf96

SHA512
e22303ee18b2be6b69e25094576225f609f27cc62338b8386b08818143bad1f3d9a3f9cc7ad825284f1bba67a6e236e8acd0b5a60b573c1e526b2079d65ed000

Download Submit
memory/2512-17-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download
memory/2512-21-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4400-0-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4400-1-0x00000000005F0000-0x00000000005F6000-memory.dmp

Filesize
24KB

Download
memory/4400-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download