b237d394239901d8c724faeca0c4163d61ef365f680dc491814929076dfe38aa

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
28/01/2024, 03:33

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe
Size

41KB
MD5

940bbbe16537cd9530880f6ddb301944
SHA1

6a0716162dc968a3acbf820b15a20177093f059a
SHA256

b237d394239901d8c724faeca0c4163d61ef365f680dc491814929076dfe38aa
SHA512

efd321772c1099457005da59d9d307719090078b5b8dc32f2cfc14f7927de9fde6048f33b861af0c2cca3ed6851abfda9bc8ad5d9903fe7d0244199edf9279fd
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqB:bc/y2lkF0+BjB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
868	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_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
2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe
868	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 868	2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe	28
PID 2240 wrote to memory of 868	2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe	28
PID 2240 wrote to memory of 868	2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe	28
PID 2240 wrote to memory of 868	2240	2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-28_940bbbe16537cd9530880f6ddb301944_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2240
- 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:868

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
41KB

MD5
e98ed5977a1db40fc32501a6cc5f9a70

SHA1
a975a0ea134f396382f3692737b93ee733557607

SHA256
5acc50f2f6a341971862a787160924a9f7cf2c60eb3e50854b3156f6c4604cd1

SHA512
8661bb6221c07e568b018ad2edc086c5fcde41d3e186e65e0511251fd49c407acc930500d48035498e430ed08eac18fdcde5f0a2eb65da3dea6efac3a992beee

Download Submit
memory/2240-0-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2240-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download