6114a6d8cb5b2d303d27230750b690a899f6743236b54fb7db902e4fae6fd5dc

General

Target

2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe
Size

66KB
MD5

c82053c28368e8cae37101aa37bf0e91
SHA1

a9fe09d5c74b18003a0411cc2bba1236e42ab81f
SHA256

6114a6d8cb5b2d303d27230750b690a899f6743236b54fb7db902e4fae6fd5dc
SHA512

2b252585437936a6993af0735ec4743ebe2d4c22f84f52342091dbd1d41c399c16f772a1eacfd4e6552df3ecc09b6f4db29319c0ef6cee81d1929df45ad56266
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRL:1nK6a+qdOOtEvwDpjC

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d000000012334-11.dat	CryptoLocker_rule2
behavioral1/memory/2076-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2076-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2544-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d000000012334-11.dat	CryptoLocker_set1
behavioral1/memory/2076-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2076-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2544-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2544-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2076-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/files/0x000d000000012334-11.dat	UPX
behavioral1/memory/2076-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	UPX
behavioral1/memory/2076-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2544-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2544-27-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2544	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2076	2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe

UPX packed file 6 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2076-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x000d000000012334-11.dat	upx
behavioral1/memory/2076-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	upx
behavioral1/memory/2076-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2544-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2544-27-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2544	2076	2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe	28
PID 2076 wrote to memory of 2544	2076	2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe	28
PID 2076 wrote to memory of 2544	2076	2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe	28
PID 2076 wrote to memory of 2544	2076	2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_c82053c28368e8cae37101aa37bf0e91_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2076
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2544

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
66KB

MD5
ea8517bce9f2bab999397cdbf74e6204

SHA1
c606877ae497a3c9fcae37aab3d6e24c814523cc

SHA256
368da7e80fdfe4c616cc834761b4e8dae113f08b5301a47d5a94fb508524d5e1

SHA512
d3dc17105860389a6dcdc8cffa403a574c7461ebbefdf042dd57d7b7720465e744f964ec8127880c0bd4bc5d9ddc672f6d4da85cbd9fe5b3750ab2f492e21c0c

Download Submit
memory/2076-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2076-1-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2076-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2076-9-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2076-12-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download
memory/2076-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2544-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2544-19-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2544-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2544-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download

Analysis

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