42e81b518558a61270452941ef5dc2815e0bde76111125137a306399a8352172

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
23-05-2024 22:29

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General

Target

2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe
Size

44KB
MD5

71f5e9d05c9638b868d40b17f4398572
SHA1

2d469ada739f322742994f27cd809a87b2598047
SHA256

42e81b518558a61270452941ef5dc2815e0bde76111125137a306399a8352172
SHA512

e8d01967e7e6757737c933d233f0286f1f9f67714b6cd1b1ae5f3fccd727df465f0e1dfac0faf42ab438349f640bbe7adf4edee7e618a905ac50f4b7ec330f9f
SSDEEP

768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4REL+cc66TcN:vj+jsMQMOtEvwDpj5HW5scN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002342a-12.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral2/files/0x000900000002342a-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-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
1020	misid.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 1392 wrote to memory of 1020	1392	2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe	83
PID 1392 wrote to memory of 1020	1392	2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe	83
PID 1392 wrote to memory of 1020	1392	2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe	83

C:\Users\Admin\AppData\Local\Temp\2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_71f5e9d05c9638b868d40b17f4398572_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:1020

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\misid.exe

Filesize
44KB

MD5
349c8f239628f4c8d6df2f52dbeacd3a

SHA1
1e02044710dab6792bd9d0dcf82d0cdbba5475c5

SHA256
32cf55f0a2235dd5f3e43685459c57bc4d5efa6b04438cc2eb29d7f978a33b5c

SHA512
84407a7129ec4b10a065a2b2f212958b433befe026fe949f5d730ab0b8068746b1771c8c1ae828b2f40747f68cd9521243e3eab68f74ad9dff36c2b2b63bcfbf

Download Submit
memory/1020-17-0x00000000020F0000-0x00000000020F6000-memory.dmp

Filesize
24KB

Download
memory/1020-23-0x0000000000630000-0x0000000000636000-memory.dmp

Filesize
24KB

Download
memory/1392-0-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/1392-2-0x0000000002070000-0x0000000002076000-memory.dmp

Filesize
24KB

Download
memory/1392-8-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download