e1559e56dd28f6dd29eae755fd8d845691637c9b6bcf506ce3f3d2b1df56c503

Analysis

max time kernel
148s
max time network
153s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
28-03-2024 22:23

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General

Target

2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe
Size

54KB
MD5

0e5f2c5437422343c675dcb4247050e2
SHA1

f1b74fa909487edc3fd1a49b3abef44066583e42
SHA256

e1559e56dd28f6dd29eae755fd8d845691637c9b6bcf506ce3f3d2b1df56c503
SHA512

c8499f18de21ccfce830fb1f50e81fe78e0dfb25156027c56e175cf1a633e7f91db24bf606340857548f7a03d7ea9d928263be9bf16b70e2ea8b9b87eef872eb
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakl8eN:V6a+pOtEvwDpj0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023038-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000a000000023038-12.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-1-5-21-275798769-4264537674-1142822080-1000\Control Panel\International\Geo\Nation	2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1216	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 4524 wrote to memory of 1216	4524	2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe	87
PID 4524 wrote to memory of 1216	4524	2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe	87
PID 4524 wrote to memory of 1216	4524	2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-28_0e5f2c5437422343c675dcb4247050e2_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4524
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1216

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
54KB

MD5
19232fa8eb6f690a4a0dc888507c3ac7

SHA1
d96f9ff19911d88e1ae8ec98f0f920734b45956b

SHA256
3ca0b86e8127a2b30daf9542dfa41cabc412d9ce0af6a75706686416d5489375

SHA512
087ad9f16de61414c56ad8e8ec200660444d78fb0134c58b7275f99ae88a799ca6aec7f4eef6503b842903d9a60e98cb06e568cad802fbda169e4c0c700e306f

Download Submit
memory/1216-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/1216-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4524-0-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4524-1-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/4524-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download