cb85982e646d9704db46e6dc47f1dda06c5de77038479ae0d85e45de608e9dc2

Analysis

max time kernel
148s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
30/04/2024, 12:46

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General

Target

2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe
Size

73KB
MD5

8e40ef5f9e0ceb254556c0ebbe4060c0
SHA1

323df8685098decaa40370fe495a819cebd566c7
SHA256

cb85982e646d9704db46e6dc47f1dda06c5de77038479ae0d85e45de608e9dc2
SHA512

3b1dcd8c354f898ecd1857ade4f416f84875fb85c3551a3915571442e2fabd5e93953feed7094ba765aa062db69e0be81c3d7935da083aa18682bd70d3e16914
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1svr9:X6a+SOtEvwDpjBZYvQd28h

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x0006000000023288-12.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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation	2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
4468	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 3232 wrote to memory of 4468	3232	2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe	82
PID 3232 wrote to memory of 4468	3232	2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe	82
PID 3232 wrote to memory of 4468	3232	2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe	82

C:\Users\Admin\AppData\Local\Temp\2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-30_8e40ef5f9e0ceb254556c0ebbe4060c0_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3232
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:4468

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
73KB

MD5
02bdcb394b071223a9fbf576fcd7c9da

SHA1
f5e97a4da0cf2362e5b1fd0bdef412e184759d5d

SHA256
7e65ded9ccd83e2afd5895ad50a28fe4aa09db4caab22863bbe53aaa3874c75f

SHA512
3001ee82876c32dc33163b2d312f3a756e290221401389038701491c876f1021c580b347c2a7d0272129d5ad0504d07c01471f08922efdb1d6f4a88db07707eb

Download Submit
memory/3232-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/3232-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/3232-8-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/4468-17-0x0000000001F80000-0x0000000001F86000-memory.dmp

Filesize
24KB

Download
memory/4468-23-0x0000000000680000-0x0000000000686000-memory.dmp

Filesize
24KB

Download