5662f0e6361e0fe939b9425edab2f34c28abc4776d7bb17e3e340c7a4f56b9d3

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
27-01-2024 19:28

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General

Target

2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe
Size

41KB
MD5

3d58d73eebf1bb5d8d7bd5e3b5cb1e21
SHA1

d8c2a50223a863e6b86993356c85c2e5b3d8b1c8
SHA256

5662f0e6361e0fe939b9425edab2f34c28abc4776d7bb17e3e340c7a4f56b9d3
SHA512

d6f59f9a9f0cd4646b74efb105ded3644f2f5bafe070854014ed279c20f5db8d59b97819769573290e1eb6f2c6ea6e321eae31461f3aaf3293188ed48cf2d450
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRq0:bc/y2lkF0+Bj0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e0000000122bb-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2256	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_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
2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe
2256	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2256	2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	28
PID 2380 wrote to memory of 2256	2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	28
PID 2380 wrote to memory of 2256	2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	28
PID 2380 wrote to memory of 2256	2380	2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_3d58d73eebf1bb5d8d7bd5e3b5cb1e21_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2380
- 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:2256

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
41KB

MD5
c2767093d6305606a9ea5629d7b9e8cd

SHA1
0dfc73af91285707cd20da960f65c7616fa3ae23

SHA256
b36ee72c75fbb7465c68e144d6769527bf256a29df2ea3b3d2eaeaa52490cf76

SHA512
5e101630f7f16e49b0960d3470dc7f7ffa6f9d5f5a714faee142f722cfa9b587da11fb687115a4cd977f4c6e96e870a2883d1fccb230d908054c41e0d588bb03

Download Submit
memory/2256-23-0x00000000005D0000-0x00000000005D6000-memory.dmp

Filesize
24KB

Download
memory/2380-0-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2380-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2380-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download