64b7324887c8787676218a0773386ed91b41395a36d6add87f960d714757ad73

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
23/04/2024, 04:40

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General

Target

2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe
Size

57KB
MD5

636118771fb84eaaa3538c8016c5abf6
SHA1

e3480e232028807d4dd0822f2124b5644f0dc05c
SHA256

64b7324887c8787676218a0773386ed91b41395a36d6add87f960d714757ad73
SHA512

5ad02ec14bffa42871dd5b6e76b48487f141bad1f05cee15d2dcdda601534391577310b50c3a7f5d596078410973f3947ddd647ccf27f17a466d5e252e2680e2
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0VoR:X6a+BOtEvwDpjBOxR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e9b1-12.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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
756	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 3984 wrote to memory of 756	3984	2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe	85
PID 3984 wrote to memory of 756	3984	2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe	85
PID 3984 wrote to memory of 756	3984	2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe	85

C:\Users\Admin\AppData\Local\Temp\2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-23_636118771fb84eaaa3538c8016c5abf6_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3984
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:756

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
57KB

MD5
a4eb69cb6e09a95e23bb1db97167f508

SHA1
9aead9afabdf51b572dfdcd3591b6199b0df468e

SHA256
cd22dbdc686d03b7cd54d09eefc7954dbf1f29694679423d0012be34cc658d2b

SHA512
d2d32a5ed66cf8de574fa95789d89105359ec9b033ddf5d9cea851613ce21a6e7f7fb93477236af0819be8244c9862c0e7432b71eb26721b7b370dea910a3a5d

Download Submit
memory/756-17-0x00000000005E0000-0x00000000005E6000-memory.dmp

Filesize
24KB

Download
memory/756-19-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/3984-0-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3984-1-0x0000000000660000-0x0000000000666000-memory.dmp

Filesize
24KB

Download
memory/3984-2-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download