9a09f3fe8d26396bcc6f4056bffa667c7cb28a6a81a6904012aeefbc7f0ff452

Analysis

max time kernel
138s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
18-02-2024 20:32

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General

Target

2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe
Size

76KB
MD5

330b4c4a9f2ba6f21e5cf87fa41e8d40
SHA1

898fc4dd2f82ab160bd6dced03842b9b7736a220
SHA256

9a09f3fe8d26396bcc6f4056bffa667c7cb28a6a81a6904012aeefbc7f0ff452
SHA512

18890c91f6f52fdfbb38cda93cb3343d44c003778769c5424cb3e5c727334244bdc0e904f8cbbc1edba945daf9c27658d99171fabaa43536346b9ee48e626ba8
SSDEEP

1536:ZzFbxmLPWQMOtEvwDpj386Sj/WprgJN6tZdOyJ3KEWTeL5cD:ZVxkGOtEvwDpjcaxw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0007000000023131-13.dat	CryptoLocker_rule2

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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation	2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3112	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 2400 wrote to memory of 3112	2400	2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe	83
PID 2400 wrote to memory of 3112	2400	2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe	83
PID 2400 wrote to memory of 3112	2400	2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_330b4c4a9f2ba6f21e5cf87fa41e8d40_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:3112

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
76KB

MD5
8041934cb3bced46fd25fdad646352ed

SHA1
935c25387c746a758df08136d20df420737811e2

SHA256
36f94a52e8dab135c810e7b4103eb769cae6eb52306584a607910454b3a6e8de

SHA512
ed4163c7a2626a38698070d0cc65a3cf8152f8a6fc680f9af9b14ef4d8ef1a79397c6f6ca553cb035224e1bfe6625b48a66699f05c1ef0bb32bf2ac53a611141

Download Submit
memory/2400-0-0x00FFFFFF00FFFFFF-0x00FFFFFF00FFFFFF-memory.dmp

Download
memory/2400-1-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2400-2-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/2400-3-0x00000000021C0000-0x00000000021C6000-memory.dmp

Filesize
24KB

Download
memory/3112-17-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/3112-19-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3112-20-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download