f1aaf7f62a1c972c8191287678d719b13fa5bdb5d6340f098c0805833b26fa06

Analysis

max time kernel
148s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
03/06/2024, 07:47

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General

Target

2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe
Size

76KB
MD5

d1a156712c705331878c575aaa8a467e
SHA1

d76920a769b32f455b5c65b1219b255897e711c1
SHA256

f1aaf7f62a1c972c8191287678d719b13fa5bdb5d6340f098c0805833b26fa06
SHA512

b22740c4a8b48eba9c9cd70d697265bd806f10d36eb9319d625dcf51981ba42d5dda10dff091449be592b4cf339c3075f87b4f936a9ef0d63cee26252132009b
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1rHsom:X6a+SOtEvwDpjBZYvQd2I

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023410-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0008000000023410-12.dat	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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4180	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 2564 wrote to memory of 4180	2564	2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe	83
PID 2564 wrote to memory of 4180	2564	2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe	83
PID 2564 wrote to memory of 4180	2564	2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d1a156712c705331878c575aaa8a467e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2564
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4180

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
76KB

MD5
0f79a25e40c46436244c92dc13b61e8d

SHA1
301a32e3896829277b438cd6f07667a5d10e64ef

SHA256
dbd258de008ad5405e4677d7e688d23823218a1352493a55b2f11630f5db5da8

SHA512
1a05f7978db03b368b29ed9d4b09109837814983f06cf95cc11d91fbf0f72cede369ca5b101b1928b53c6573219ebf609fdb18d1065b45232f744c44af1a9d5c

Download Submit
memory/2564-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/2564-2-0x0000000000860000-0x0000000000866000-memory.dmp

Filesize
24KB

Download
memory/2564-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/4180-17-0x0000000002110000-0x0000000002116000-memory.dmp

Filesize
24KB

Download
memory/4180-23-0x00000000006C0000-0x00000000006C6000-memory.dmp

Filesize
24KB

Download