16d66d178013617c419fc5eaef7151540b26604d211763780221efc24b2c4c18

Analysis

max time kernel
149s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240220-en
resource tags

arch:x64arch:x86image:win10v2004-20240220-enlocale:en-usos:windows10-2004-x64system
submitted
21-02-2024 13:53

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General

Target

2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe
Size

44KB
MD5

90ae8a14ca3e7f58331add80ae5e5e63
SHA1

51d068fac2e31b34719107bbb6a65a2740eb6361
SHA256

16d66d178013617c419fc5eaef7151540b26604d211763780221efc24b2c4c18
SHA512

89c6e1a499d099658e6675cdf7fcceded83081c2dc4d239c4617d448693a71e4607f6d9899ea06c6be88faa2f009561dc212a234847b38664abda4e39d044fd4
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6j4AYsqSh+DETkedmhXSJJO:YGzl5wjRQBBOsP1QMOtEvwDpjl39+D+0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/4868-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0006000000022512-13.dat	CryptoLocker_rule2
behavioral2/memory/4868-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/4868-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0006000000022512-13.dat	CryptoLocker_set1
behavioral2/memory/4868-17-0x0000000000500000-0x000000000050B000-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-1-5-21-4123566616-543693798-272350410-1000\Control Panel\International\Geo\Nation	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
3396	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 4868 wrote to memory of 3396	4868	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	88
PID 4868 wrote to memory of 3396	4868	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	88
PID 4868 wrote to memory of 3396	4868	2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-21_90ae8a14ca3e7f58331add80ae5e5e63_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4868
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3396

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
45KB

MD5
494408f4da79cdee5e383b094e7dc127

SHA1
324c3abd734ad30a3a110a6062ccad8715828850

SHA256
9ab571c490b872a9d27b523e32fdfa57bc097b5c8f72bbb0dfa27f1fd3e4ede7

SHA512
48c4105b660c0fb634060a48eebb5becbdedc463063d8d8d9f09bb2003af9706d644ef4fcc772211ddaff898fb6dc1b9d4aff693dc04ec7476a9ba57f3fb5d11

Download Submit
memory/3396-19-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/3396-22-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/4868-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/4868-1-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4868-2-0x00000000007B0000-0x00000000007B6000-memory.dmp

Filesize
24KB

Download
memory/4868-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4868-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download