959fae83cbbd480bef4fe7d9ca57be6bb7dd7ccecaabd8c4968b140e8f92ac0d

Analysis

max time kernel
148s
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
15/03/2024, 03:29

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General

Target

2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe
Size

86KB
MD5

6894f3250316d1147a6d6af9f47392e3
SHA1

0173de6a239e5bdaedaa9abbbdab67e15decbd0f
SHA256

959fae83cbbd480bef4fe7d9ca57be6bb7dd7ccecaabd8c4968b140e8f92ac0d
SHA512

7adcfac1a28ad095d82e99a9686726d0091bd3c35f34cbaa500e0a1aa0bea7da4e36a49f2fb69bf478d6a83e27022b7dc53602effebe9c7aa3e9f9fab8104c52
SSDEEP

768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvx5/HbK:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8bK

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/5264-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x000c000000023151-13.dat	CryptoLocker_rule2
behavioral2/memory/5264-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5144-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral2/memory/5264-16-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5144-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/5264-0-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000c000000023151-13.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5264-16-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/5144-26-0x0000000000500000-0x000000000050F000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-1497073144-2389943819-3385106915-1000\Control Panel\International\Geo\Nation	2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5144	misid.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 5264 wrote to memory of 5144	5264	2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe	84
PID 5264 wrote to memory of 5144	5264	2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe	84
PID 5264 wrote to memory of 5144	5264	2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_6894f3250316d1147a6d6af9f47392e3_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5264
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:5144

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\misid.exe

Filesize
86KB

MD5
9763c8bd9616dea2ffa4b5d7538ece04

SHA1
3699c8e1109d34a7266690e129c31868629fc1a9

SHA256
8dffd084ac6823d7d5d57b96d3153e25d582b5e5d901185d13b20f47e66a3bbf

SHA512
b4ac0840eda37cadbce0e96758e47b50d168b2bc3f17b852f6694d069e81cc9fd46bd410699d739ca920bcd1722a7b880501a3370a0b03ab8684831642066d64

Download Submit
memory/5144-19-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/5144-21-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/5144-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5264-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5264-1-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/5264-2-0x0000000000770000-0x0000000000776000-memory.dmp

Filesize
24KB

Download
memory/5264-3-0x0000000002230000-0x0000000002236000-memory.dmp

Filesize
24KB

Download
memory/5264-16-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download