11da47733f8322ca55535ef489007d8be1cc51cbffa9572d4b51493595d7ccee

Analysis

max time kernel
150s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17-04-2024 03:41

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General

Target

2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe
Size

75KB
MD5

526a67c417e9d42022059175319b6376
SHA1

d6522631a7836c8764e32c40555052327b146b19
SHA256

11da47733f8322ca55535ef489007d8be1cc51cbffa9572d4b51493595d7ccee
SHA512

8c9351d0fd6d8ea7389069d777799e1ba2706d1261be46bf5d10290a2c890273e645acacca07eff2379f2e5006f9c3e80ed0ae82806a2051111f5ce7d5b2d24b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1siMOV:X6a+SOtEvwDpjBZYvQd2b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000233da-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x00070000000233da-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-1-5-21-1826666146-2574340311-1877551059-1000\Control Panel\International\Geo\Nation	2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4084	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 3912 wrote to memory of 4084	3912	2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe	86
PID 3912 wrote to memory of 4084	3912	2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe	86
PID 3912 wrote to memory of 4084	3912	2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe	86

C:\Users\Admin\AppData\Local\Temp\2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-17_526a67c417e9d42022059175319b6376_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3912
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4084

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
75KB

MD5
b470200e94e12736697693cacf820354

SHA1
6e979a80843f57123445e1275ff157923bff0f67

SHA256
74d58153f3ed943a7115236769b014d92088473b30233f30b9011645db111633

SHA512
cc159287ac08ce602e9a2287eb9eb0d5a266c16f05d05a472f83eebe6b04400b72188871d5d6a15a711ce2aeb26e3fdb9d670c606acdb8bfa08742a1d5d49e85

Download Submit
memory/3912-0-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3912-1-0x0000000002210000-0x0000000002216000-memory.dmp

Filesize
24KB

Download
memory/3912-2-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/4084-17-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4084-23-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download