27eecaf9a57fd4e4d3063a697d4acc683193e4fbd552392d340ddcf6eb276925

Analysis

max time kernel
148s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
11/06/2024, 19:33

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General

Target

2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe
Size

77KB
MD5

7000c1819555ff71dbbe71beb136993a
SHA1

8fcd6de20d3a63641d507a91817a5be10996d132
SHA256

27eecaf9a57fd4e4d3063a697d4acc683193e4fbd552392d340ddcf6eb276925
SHA512

00f4d508142027d226dbd81454a3616dc77d0ce20a518e85017e694bcd4abc0ce26a2709078fce0b97b958945bb2d8318f397af6acff9ebf295201e1dc1f5e48
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1si8:X6a+SOtEvwDpjBZYvQd2y

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002342a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000800000002342a-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	2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4864	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 1208 wrote to memory of 4864	1208	2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe	81
PID 1208 wrote to memory of 4864	1208	2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe	81
PID 1208 wrote to memory of 4864	1208	2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe	81

C:\Users\Admin\AppData\Local\Temp\2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-11_7000c1819555ff71dbbe71beb136993a_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1208
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4864

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
77KB

MD5
74661b48bf6f2e9cea9706ed1560fd59

SHA1
6caf7e453a35cc52637465d2ab949aafb98f32ff

SHA256
70a21441ab6c56e67436d136654343f7095788b346a1770b248cb43a75b6c461

SHA512
52577883b953226d11d4eb1b9e3ddea1ef915bb8c6d71e82bd7fcb69c0655316835f95bdca1864c35176b3b97cf32b3a96ef3a6bc5d23ee6f9910016708c5b05

Download Submit
memory/1208-0-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/1208-2-0x0000000000750000-0x0000000000756000-memory.dmp

Filesize
24KB

Download
memory/1208-1-0x0000000000620000-0x0000000000626000-memory.dmp

Filesize
24KB

Download
memory/4864-18-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/4864-17-0x00000000021D0000-0x00000000021D6000-memory.dmp

Filesize
24KB

Download