52c043793c8ff021caaf9dc68c57295808f487774f0e746e6c90d17e8ef0bcb7

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
22-05-2024 20:51

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General

Target

2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe
Size

46KB
MD5

e0762f81eae3b91b3edd204b3dd3fec4
SHA1

b7c60ce7c979f0bedc0f08e8bb446a55d651d64f
SHA256

52c043793c8ff021caaf9dc68c57295808f487774f0e746e6c90d17e8ef0bcb7
SHA512

46e3f891e91df478fb7ffb2080558414ab09fb449abe7e37789a467f8eb4b288113c7ef1d7154249cd0f145c19443e00c1fd654409650a264b6645edd9b1c2da
SSDEEP

768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLam5aFr7YOzzfm0EXsJL:V6QFElP6n+gMQMOtEvwDpjyaYaFAh3S

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\asih.exe	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

Processes:

2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2804150937-2146708401-419095071-1000\Control Panel\International\Geo\Nation	2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

912 asih.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
912	asih.exe

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe

description	pid	process	target process
PID 5092 wrote to memory of 912	5092	2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe	asih.exe
PID 5092 wrote to memory of 912	5092	2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe	asih.exe
PID 5092 wrote to memory of 912	5092	2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e0762f81eae3b91b3edd204b3dd3fec4_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:5092
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:912

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
46KB

MD5
a38ff11b9f69cc305a1f38b9a17547c2

SHA1
6d02e4cf07de8cd910cff295c8fa87ab0ed65e01

SHA256
bb6c4b019072e1cc251c326ae3086b08837461f879b21e6c1064ac3cbf6fe926

SHA512
1a7be70254cc62568102160a246c0b878fbf971df68650cb2d49ae853a54c0ef3ee00063ab942c88d6a041c59ec1583a3fea26ad7340ed610beb47c777855b51

Download Submit
memory/912-17-0x0000000002090000-0x0000000002096000-memory.dmp

Filesize
24KB

Download
memory/912-23-0x0000000002060000-0x0000000002066000-memory.dmp

Filesize
24KB

Download
memory/5092-0-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download
memory/5092-1-0x00000000007D0000-0x00000000007D6000-memory.dmp

Filesize
24KB

Download
memory/5092-8-0x00000000006A0000-0x00000000006A6000-memory.dmp

Filesize
24KB

Download