550fc871e32fa7e53e7ce0756a8361556c957b67b683b528f4af1f24a4735527

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
09/03/2024, 00:27

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General

Target

2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe
Size

63KB
MD5

1bb70577c0aed30211beaf3cc5a281f0
SHA1

4f735264be4cb1b27cde11977f73b9df6d0a507a
SHA256

550fc871e32fa7e53e7ce0756a8361556c957b67b683b528f4af1f24a4735527
SHA512

9fe4f67770ed5253d88cabcc054eb2c205a77181512a0f5f60962375da5fb59ba6beba639736062add220b3796b083d069c2db9db273f25b493a1e39a8e168b3
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmh85cU:V6a+pOtEvwDpjvY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e980-12.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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	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 3440 wrote to memory of 2600	3440	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	89
PID 3440 wrote to memory of 2600	3440	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	89
PID 3440 wrote to memory of 2600	3440	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	89

C:\Users\Admin\AppData\Local\Temp\2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2600

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
63KB

MD5
dd41de3a6d2b8dbfc464bbd363f8c74d

SHA1
6ba7e439c0d69642cac496facd8ec58690d5e90f

SHA256
f6a04e762a5871267525be696761715be4da6d163c7642fd379449eb44d91749

SHA512
781dd481edf1cc98f9d036157b6a4c085bc3be6a6e1704617e484882a2d7c0e17578709e73f67e754a01bac48f8239ae63f5d3f1eaa345c5acd1cecde734e3c7

Download Submit
memory/2600-17-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/2600-22-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3440-0-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3440-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3440-2-0x0000000002080000-0x0000000002086000-memory.dmp

Filesize
24KB

Download