36d633e781a43f8db66eb67fd2761d431df68aede86fc28a44f861760358feca

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
10/04/2024, 11:27

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General

Target

2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe
Size

40KB
MD5

203c8fd1370cebf58850f215cefc4ccc
SHA1

1058349770ff198dd79187abab55605c3acf901b
SHA256

36d633e781a43f8db66eb67fd2761d431df68aede86fc28a44f861760358feca
SHA512

af3f30ff54ffc101c0166aca1408f46b762fbd59a82b1823afcc5cc1a161a7f3427e0ccf324fcaafe84c5587fdea1c72ed1ecf4d94414e7b9b38161a7745ee69
SSDEEP

768:bgX4zYcgTEu6QOaryfjqDDw3sCu5mXW1Rb:bgGYcA/53GADw8C3qd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000e000000023147-12.dat	CryptoLocker_rule2

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1520	hasfj.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 4664 wrote to memory of 1520	4664	2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe	88
PID 4664 wrote to memory of 1520	4664	2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe	88
PID 4664 wrote to memory of 1520	4664	2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe	88

C:\Users\Admin\AppData\Local\Temp\2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-10_203c8fd1370cebf58850f215cefc4ccc_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4664
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1520

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\hasfj.exe

Filesize
40KB

MD5
0365b2560cf1ed2e8416303e59105f45

SHA1
c5a605145ff854dc6ae04fb4d7e4560b618f43a9

SHA256
833bf88eb93ee782752545cdbca7b50899953562a141ddeeeece893ca4ecb816

SHA512
84b4119951b91af15bf1060abff5abf50ae46b2933b2f162a7db0140fa3bb597ea18bf2e9a4854a438d3378c91c838e9e3eb83fa5543902852fbd87715463d91

Download Submit
memory/1520-17-0x0000000002270000-0x0000000002276000-memory.dmp

Filesize
24KB

Download
memory/1520-20-0x0000000002200000-0x0000000002206000-memory.dmp

Filesize
24KB

Download
memory/4664-0-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4664-1-0x0000000000510000-0x0000000000516000-memory.dmp

Filesize
24KB

Download
memory/4664-2-0x0000000002180000-0x0000000002186000-memory.dmp

Filesize
24KB

Download