3c85242bd827177e09087a51f24d1a1e8d6ab68f078530dd8e2ceec1dc3715ed

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
10/05/2024, 01:29

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General

Target

2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe
Size

44KB
MD5

4bec9391a8a2c85c46228051e2ec4b97
SHA1

bd2ebafc0c22e810fdf7c0f9da81520ba6173adf
SHA256

3c85242bd827177e09087a51f24d1a1e8d6ab68f078530dd8e2ceec1dc3715ed
SHA512

48e5b45c5815873b065854028976089f726fb12d2e022efde182894fedc40eafe2d3ffd664a06579dd35fb792957b54157654769e24f8f16c0f8319a1701ca12
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphq4:bc/y2lkF0+Beq4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000015cb1-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2536	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_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
2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe
2536	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2536	2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe	28
PID 2172 wrote to memory of 2536	2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe	28
PID 2172 wrote to memory of 2536	2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe	28
PID 2172 wrote to memory of 2536	2172	2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-10_4bec9391a8a2c85c46228051e2ec4b97_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2172
- 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:2536

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

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Downloads

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

Filesize
44KB

MD5
1293a709ded3acf15f318f0383a348d4

SHA1
aa9fb15aa1ed0fbb05afd0b8cf5753d285c784b0

SHA256
c6c91426f2e6ec3c74b2523eb0541b067bed783508c3461d59135a6d9fd30c67

SHA512
7cc8370ebffab000c99a250c602a9d81a357fada82c193a57291f55241679a58ca59b5bb75960cda0e92d444f156207a550441a7aaf4a4526fedb88765c4de8a

Download Submit
memory/2172-8-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2172-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2172-0-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2536-16-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download