a2c7bb78b7210bef61e3af859d650054ccb7e32a322ebcbe62db303a0c48d239

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
23/02/2024, 16:56

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General

Target

2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
Size

41KB
MD5

fb3d07fd5f7ba731c198a6253fa338be
SHA1

e3ca3c09b430b18df8ef24f0f640dea2fd553d95
SHA256

a2c7bb78b7210bef61e3af859d650054ccb7e32a322ebcbe62db303a0c48d239
SHA512

b850b2bb3fe58955aa5d714d40a30a350481b710c17d56ab4b5a35bfa41a7ac1f79b391a422b95b31e3b8def7b7148d0569da72101dd5a29700f4a1fb1ac1512
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMpheY:bc/y2lkF0+BeF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012253-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2508	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_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
1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
2508	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1656 wrote to memory of 2508	1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe	28
PID 1656 wrote to memory of 2508	1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe	28
PID 1656 wrote to memory of 2508	1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe	28
PID 1656 wrote to memory of 2508	1656	2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-23_fb3d07fd5f7ba731c198a6253fa338be_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1656
- 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:2508

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
a084a5ba6c751cb7c1a927370cb4a77e

SHA1
5833281843876ee7b0aaea17534701d3be137d98

SHA256
7bfd08fc9cf8f727d637da96230c4c5281a1e00cf5c40ae019f03d705af39aac

SHA512
00189224a2d9f13a788dd2fe9b0b1021b3df1803f726ae807d41cf5ec40a8f67d90ded87b2a7e7cbbda074b0609148b33cae818e221fc99f577edd4260882f59

Download Submit
memory/1656-0-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1656-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1656-8-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/2508-17-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download