4ea1fbd6a543ebc97793fc9708e2804cdd7b055bc4f895c3a8fde620e02fcc12

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
20/02/2024, 03:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe
Size

38KB
MD5

3c0c063c33c55d755136fb6144985f7d
SHA1

dc69b139f9af51757bf2ca3bd4b301e21cf01c44
SHA256

4ea1fbd6a543ebc97793fc9708e2804cdd7b055bc4f895c3a8fde620e02fcc12
SHA512

e1bf3fe630b697ac6dd2e247011b626d6b73e84bdafc00fe4e6f040763e2b5ad12f65d62fc79e59afc747734f6aed8fcf716ad69c5dee2ef9bcc4411e6442231
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLNXh:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkL7

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000122dc-11.dat	CryptoLocker_rule2
behavioral1/memory/1992-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2716-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1992-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c0000000122dc-11.dat	CryptoLocker_set1
behavioral1/memory/1992-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2716-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2716	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1992	2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe

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 1992 wrote to memory of 2716	1992	2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe	28
PID 1992 wrote to memory of 2716	1992	2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe	28
PID 1992 wrote to memory of 2716	1992	2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe	28
PID 1992 wrote to memory of 2716	1992	2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-20_3c0c063c33c55d755136fb6144985f7d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1992
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
38KB

MD5
1636bb1d557133447cce59cdaf1133a6

SHA1
6a2189e031ea3c869cdcb251e8197dcef14f7afc

SHA256
57543b5898b6e3240c0e5ec3469c0f945f63dcf9271a2e4232219ec481fa6f0b

SHA512
d259b4ec56e6e88bfb90963549b0931106474d7f6d8920735333c03bc0649f5c65220d4df8ee5709f0a941c09f7414530935e79cb38e1de2bdd5d17578cb29c3

Download Submit
memory/1992-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1992-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1992-2-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/1992-3-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/1992-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2716-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2716-18-0x00000000003B0000-0x00000000003B6000-memory.dmp

Filesize
24KB

Download
memory/2716-25-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download