a805dea7aae4c0085464333c65857eb48d888bc023d48d7d0f50c9cce235c9b0

Analysis

max time kernel
149s
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
10-03-2024 06:27

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General

Target

2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe
Size

162KB
MD5

33c9c6c751b57d0f516505dcbb832c5d
SHA1

9b31770128fc24b502011ed473f204dabb4916f9
SHA256

a805dea7aae4c0085464333c65857eb48d888bc023d48d7d0f50c9cce235c9b0
SHA512

40f174c6f01b63f1e7db80a5117bb7ea904339927ec2b65489a952b3eacb13de0d894f878fc5373d5a07cb61fe9bc898e9b0ad717d82ced8acc7133416e7fbd1
SSDEEP

1536:u6QFElP6n+gWMOtEvwDpjJGYQbN/PKwNgp699GNtL1eIE7:u6a++OtEvwDpj6zF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000700000001e59e-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-1-5-21-399997616-3400990511-967324271-1000\Control Panel\International\Geo\Nation	2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3832	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 1396 wrote to memory of 3832	1396	2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe	88
PID 1396 wrote to memory of 3832	1396	2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe	88
PID 1396 wrote to memory of 3832	1396	2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-10_33c9c6c751b57d0f516505dcbb832c5d_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1396
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3832

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
162KB

MD5
c5d9eab2cdf6bb03e1ffd1ce3fe2ee32

SHA1
3e151d9589eb1346a33da58f6ae8b7ebee122276

SHA256
f3ac382ec787134f4e8636c5f11d9247743c044252324db80819ff4496afccde

SHA512
f81651e1a00a71c344d7c3a607819ccd8367aba24dc6f233d14bef6d0fc9df4b124e686d8db6034ea97eaa89e4dc578af67deb2bd6501030077c19899504d014

Download Submit
memory/1396-0-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1396-1-0x00000000021E0000-0x00000000021E6000-memory.dmp

Filesize
24KB

Download
memory/1396-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3832-17-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/3832-19-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download