4d0b4b80dc9744f54e552a2aba873b2857d96e6eb7d59bb113c28638b5507670

Analysis

max time kernel
148s
max time network
150s
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, 14:42

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General

Target

2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe
Size

86KB
MD5

5039e02e74a26c2e4a3a3367455f4da2
SHA1

e9389eefeff66ae3f272141d2a63e88a8a5efba9
SHA256

4d0b4b80dc9744f54e552a2aba873b2857d96e6eb7d59bb113c28638b5507670
SHA512

3d0e457bbc4d424cd45296dbdd7b49c243a00b84867652fd3c17602098474da4c2cc84ee6d3863bea5cbf9c1626e45bbc4f58f2b877ddab33eab2e4413490f33
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVNl6a5:V6a+pOtEvwDpjvpN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233be-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000c0000000233be-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation	2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
984	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 3484 wrote to memory of 984	3484	2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe	82
PID 3484 wrote to memory of 984	3484	2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe	82
PID 3484 wrote to memory of 984	3484	2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_5039e02e74a26c2e4a3a3367455f4da2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3484
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:984

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
86KB

MD5
961dcae4fe33dc1ccf6b5ccabcd9d453

SHA1
a8625e23b497fb1248bac414930a86b7d1d61a02

SHA256
55c84bc833b7a870f434704cfec50e54cf79c855b7cc45f8ae8a9bf4c02cc120

SHA512
599c8fb1fe0ce9f8b1c06388ac6cfbe9af3d5e42abab59e7d699e601f6a4f43d4491b7a581f2ed46798205b791c042c2f5732a11d43ea0c3f5964e70760754dd

Download Submit
memory/984-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/984-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/3484-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3484-1-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/3484-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download