9feb69cd7d8e5fb25a3d0c7edeede5f1acfd60f099df24e7fd0005d3e73b2663

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
18/04/2024, 12:58

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General

Target

2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe
Size

69KB
MD5

db1b052fb2acd9803daed818b2697a8e
SHA1

42034ffafcec8e5c30d024496ad627be3186169a
SHA256

9feb69cd7d8e5fb25a3d0c7edeede5f1acfd60f099df24e7fd0005d3e73b2663
SHA512

440890496e70937b713431b126d752b1f3b9a075319715f8301565e445c8b9064c9a6d81da7e0b40c00a6adfce243ea1e85230d1b8491100f52b1ab27600ba53
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50l:DW60sllyWOtEvwDpjwF85y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4876-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_rule2
behavioral2/memory/4876-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4876-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x000300000001e97c-13.dat	CryptoLocker_set1
behavioral2/memory/4876-17-0x0000000000500000-0x000000000050B000-memory.dmp	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-1-5-21-355664440-2199602304-1223909400-1000\Control Panel\International\Geo\Nation	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
228	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 4876 wrote to memory of 228	4876	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	90
PID 4876 wrote to memory of 228	4876	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	90
PID 4876 wrote to memory of 228	4876	2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe	90

C:\Users\Admin\AppData\Local\Temp\2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-18_db1b052fb2acd9803daed818b2697a8e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:228

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
69KB

MD5
3e22c99e9057cf9b69a11b254eb71bcd

SHA1
e62c2466b3fec0d9204c9ba3705b49b374c48d08

SHA256
6fb18353ca5cffc8b97db1e48680cd0923ca3d85b37820b50a47259868896e3f

SHA512
0f20173e265ee2b8ad424b095b2580e42e301c31f7dd752f5b4b42b864f7632737df9f242c77079ead9e94d8ae55372967ca59b46256a305172795d1c92127d5

Download Submit
memory/228-19-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/228-20-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4876-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4876-1-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4876-2-0x00000000020D0000-0x00000000020D6000-memory.dmp

Filesize
24KB

Download
memory/4876-3-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/4876-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download