1f24eeecf818064d3d869a9b811ab78704e0192d7c8e81609eb08f3ae1a09557

Analysis

max time kernel
148s
max time network
155s
platform
windows10-2004_x64
resource
win10v2004-20231222-en
resource tags

arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system
submitted
18/01/2024, 23:03

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General

Target

2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe
Size

46KB
MD5

8b903e8f39081095afaaf9f403cc7a1e
SHA1

14ef52d9bcbf6db2a6a95a71dfef2dafb58f4e05
SHA256

1f24eeecf818064d3d869a9b811ab78704e0192d7c8e81609eb08f3ae1a09557
SHA512

b8f999224ef58d3f93debac1b17905c2405b78d855410e79cae4c2ca7c9432e2958b724dccdf3c1abb4ff44ed5c30d6cf5493d21a13a33566f08ef98e464edee
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpjeJQ7suIlsw92KFXckdp7:V6QFElP6n+gMQMOtEvwDpjeJQ7pojakX

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e630-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000400000001e630-12.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-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation	2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1796	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 4408 wrote to memory of 1796	4408	2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe	28
PID 4408 wrote to memory of 1796	4408	2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe	28
PID 4408 wrote to memory of 1796	4408	2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-18_8b903e8f39081095afaaf9f403cc7a1e_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4408
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1796

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
46KB

MD5
45b1cc4bb02b241b339da16d026e23f8

SHA1
d8f1f47674dcdfc50609fccca4eac849f961f986

SHA256
8b780e62c81bce0b14e83722a6cc54c578c2f5cf704f3e4ffae564f8880cdb5c

SHA512
863495c2ef2162d414e47509ec5341ce04b670071d13767d68defda7bd49ce73769c120c422f810eb086e58e048e718885357cfd4469382dc6503684f19d110e

Download Submit
memory/1796-23-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1796-17-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/4408-0-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download
memory/4408-2-0x0000000000760000-0x0000000000766000-memory.dmp

Filesize
24KB

Download
memory/4408-1-0x0000000000740000-0x0000000000746000-memory.dmp

Filesize
24KB

Download