ef17be5d6bab4c84fb89458df2d0ffc2fe1727da6c6e0e57e9d806a68d9377c2

Analysis

max time kernel
149s
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
09/05/2024, 22:32

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General

Target

2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe
Size

53KB
MD5

896d31d803ea072c3ca9cb873a9d7485
SHA1

1e7f55a144e7b3cc3ad8151c632dd75945588887
SHA256

ef17be5d6bab4c84fb89458df2d0ffc2fe1727da6c6e0e57e9d806a68d9377c2
SHA512

d3198bdc7a1ff60d8ab678298b3ca0215ec74f5bb58dcce25364234c337e5a91a58e517b2e4712723b922db6f4cadab11fcf767c3bf66daa558b4ba45621e08b
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklPs5:V6a+pOtEvwDpj9

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000023276-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0005000000023276-12.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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3948	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 3032 wrote to memory of 3948	3032	2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe	83
PID 3032 wrote to memory of 3948	3032	2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe	83
PID 3032 wrote to memory of 3948	3032	2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3948

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
53KB

MD5
d584b38ee3a6c599e5bea6c346e91482

SHA1
379b3f554e513a0630e6edb5abd4805f7dabef04

SHA256
32e190dfd70f04eaaa0afaea97380499f6da8e65e8539a3bb7dfdd4c77f2331b

SHA512
a0c044a8f598e4cf97fdf54c27d5f30d15fc4db3c629bbbc3fc02c6ef301e31b5a1fe5f660691527e98ffd36e8737c2614cff49d64325588dcb15ac646f58be1

Download Submit
memory/3032-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3032-1-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/3032-8-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3948-17-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download
memory/3948-23-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download