5c2d7259e20247979316cdb436917cef1088645e93d6a3062556f53d6a269ae8

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
14/02/2024, 04:16

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General

Target

2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe
Size

42KB
MD5

c1a96bf44fbaea0c848f8f35bc7174e4
SHA1

0a36d6008fec11da3e7a85bc3ff2ef1f159ed4c0
SHA256

5c2d7259e20247979316cdb436917cef1088645e93d6a3062556f53d6a269ae8
SHA512

ec5c94afa33ab88b2fb3b1e3291faf44114c7d53afed121e62da47e6550f74e56596c44143b177f353ec36a08eb4b3e2bfaea9eee7c3f5667589dec9834cab3f
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B59Dgy:79inqyNR/QtOOtEvwDpjBKccJVODv9Dz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral2/memory/3336-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023225-13.dat	CryptoLocker_rule2
behavioral2/memory/3336-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral2/memory/3336-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023225-13.dat	CryptoLocker_set1
behavioral2/memory/3336-17-0x0000000000500000-0x000000000050F000-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-1-5-21-3803511929-1339359695-2191195476-1000\Control Panel\International\Geo\Nation	2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4328	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 3336 wrote to memory of 4328	3336	2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe	84
PID 3336 wrote to memory of 4328	3336	2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe	84
PID 3336 wrote to memory of 4328	3336	2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe	84

C:\Users\Admin\AppData\Local\Temp\2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_c1a96bf44fbaea0c848f8f35bc7174e4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3336
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4328

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
42KB

MD5
5900bc332eba7303a35623450ca89561

SHA1
68b0d57fca32649661bf2457aea32c81ccf9e63f

SHA256
68c85b6718cc4732bcbc3b4f36acb4c3a46ae8b047879f86b6311424f8bded3f

SHA512
b6725bf4eea34ff7e4cde29ab63fbcc2291b00214923d7f5b97c37fd1dd1e8dceefbf26f77c840ca2278492300c76138dfb3edb913e5f7b392d3b7bfd0bef630

Download Submit
memory/3336-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3336-1-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3336-2-0x0000000002050000-0x0000000002056000-memory.dmp

Filesize
24KB

Download
memory/3336-3-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/3336-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/4328-19-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4328-21-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download