3b5d96c1f6eda8e49ec8b09956382374037d336ad351cd4f2eb3e6d7568b3c59

Analysis

max time kernel
149s
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
08/03/2024, 03:36

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General

Target

2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe
Size

51KB
MD5

56cf5f764871a372bb83ac1441171a58
SHA1

984c67a2c4b231697cd1e327e2e82c5eeae369b7
SHA256

3b5d96c1f6eda8e49ec8b09956382374037d336ad351cd4f2eb3e6d7568b3c59
SHA512

e0516515a20e9cb34c6314c3ea0c671d58f50faad7f1987b98913c304972a9f9642dac2ef2c7ecb7c915992a57339ef0e699bbc5940948f2638787763e241580
SSDEEP

768:X6LsoEEeegiZPvEhHSG+gp/BtOOtEvwDpjBVaD3E09vbEdoJ:X6QFElP6n+gJBMOtEvwDpjBtEB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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	2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2392	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 2272 wrote to memory of 2392	2272	2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe	89
PID 2272 wrote to memory of 2392	2272	2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe	89
PID 2272 wrote to memory of 2392	2272	2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-08_56cf5f764871a372bb83ac1441171a58_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2272
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2392

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
51KB

MD5
a4c4b3b7741948af7c49b67440a63d82

SHA1
05d7e7c429edbc1d21d27bbb9e7d0f746492bdfa

SHA256
1cc8971b9f8602e30246d350d72e7a02c8a474e3c6b3c8f85aaf44694f2f5f0d

SHA512
9a1a5d79faab7186d77ef337ed3d016def066a4631659beaae570600b9206b6b45ebd355f76036edc46ddcbd74375f002854e53a971059af188d7f1b10240e06

Download Submit
memory/2272-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2272-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/2272-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/2392-17-0x0000000001FF0000-0x0000000001FF6000-memory.dmp

Filesize
24KB

Download
memory/2392-18-0x0000000001FD0000-0x0000000001FD6000-memory.dmp

Filesize
24KB

Download