65356744be7a228041784cfa1e0b1bea160dcc5081abbe5a1b861e8acd240709

Analysis

max time kernel
144s
max time network
149s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 14:24

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target

2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe
Size

43KB
MD5

0a4855acc99c5a5afb36d961e1d0c815
SHA1

6acc7c2264bdd78d73ce539c0de7b48e53557525
SHA256

65356744be7a228041784cfa1e0b1bea160dcc5081abbe5a1b861e8acd240709
SHA512

da60cdd4a7bce2523bad0ca008d304403f6916cb2e7ebda5e76b3f745fa7268b988d19b240363519115d825e6415967c103196ddad0db8186a0f9f4cd3f642cc
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphqj:bc/y2lkF0+Beqj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000122ee-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1572	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe

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

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe
1572	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2888 wrote to memory of 1572	2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe	28
PID 2888 wrote to memory of 1572	2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe	28
PID 2888 wrote to memory of 1572	2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe	28
PID 2888 wrote to memory of 1572	2888	2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_0a4855acc99c5a5afb36d961e1d0c815_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2888
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1572

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\rewok.exe

Filesize
43KB

MD5
79f49ea281e8fcd57ce79c9408ed60ad

SHA1
c8d44021363e13c5b324d75230fe05fac465d187

SHA256
f1a060506fad7d296375534fda2182d112e1fb10fdfcccc42a5df9c66add24e8

SHA512
f7a3dbcfe0d56508d3fc331c167c4607a02fc221dbf8ef349c1170ec39b49788f5d9b134b926b52899e375566812aaedbb3c08913013521d3c82eba4e401f010

Download Submit
memory/1572-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2888-0-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/2888-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2888-1-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download