8a7e9edc1d59d5ed4deb49c3d546bb6e71cffa33ecd485c739ef953df0f21e38

Analysis

max time kernel
3s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 22:59

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General

Target

2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe
Size

44KB
MD5

82b00318d8e28a0f8ec32f6cd04bd558
SHA1

d263c41ffd7eb2b8d84966b006db67f5212ae3f2
SHA256

8a7e9edc1d59d5ed4deb49c3d546bb6e71cffa33ecd485c739ef953df0f21e38
SHA512

fbacf2cc04108f2bf2911ca4bc4419d7559a1f87126f369a677f7cd5d43e84a695b72042f2e867ec0ca574ae98c3b0d3136a4a55c238a1e7a389dad221c81db3
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSF:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+T

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/5096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000023221-13.dat	CryptoLocker_rule2
behavioral2/memory/5096-25-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/5096-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000023221-13.dat	CryptoLocker_set1
behavioral2/memory/5096-25-0x0000000000500000-0x000000000050B000-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-1-5-21-1815711207-1844170477-3539718864-1000\Control Panel\International\Geo\Nation	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
2052	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 5096 wrote to memory of 2052	5096	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	88
PID 5096 wrote to memory of 2052	5096	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	88
PID 5096 wrote to memory of 2052	5096	2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_82b00318d8e28a0f8ec32f6cd04bd558_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5096
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2052

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
44KB

MD5
2e2a89fffb902d9e3a09072852c510ee

SHA1
4ac1228485dd9539c20cc01b614fde7d3597dac9

SHA256
46cdc4d4a0ec3623126e69f2cdd69df60ad97d88164ec54bbb92ded771371b67

SHA512
83d5144e551c3db3b2aab55145b08dd0b6dff76a4c0881a2aeb72c761da02003ea0aa722af2e931351faf0e76bf6329b4622bd05411fa6769b9f4419939d0bb4

Download Submit
memory/2052-18-0x0000000002100000-0x0000000002106000-memory.dmp

Filesize
24KB

Download
memory/2052-24-0x0000000000830000-0x0000000000836000-memory.dmp

Filesize
24KB

Download
memory/5096-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/5096-2-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5096-3-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/5096-1-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download
memory/5096-25-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download