a82611e4d147fe4b229d8aa6957ecfe439f534c8d3caba5fd7c6822259760f48

Analysis

max time kernel
150s
max time network
154s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-04-2024 05:34

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General

Target

2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe
Size

42KB
MD5

713642a05dd79cd1afac4b4d100a990d
SHA1

1fe542c19cf30858f4d66008dbabe6c6e560d987
SHA256

a82611e4d147fe4b229d8aa6957ecfe439f534c8d3caba5fd7c6822259760f48
SHA512

5a42aee9e77362d5beb10215fc3ad1ce974c37f01307dabba9da6ccfc0569cf0292f2b6573b25ac021855a02fa7193d3f15b8817d244f3a7350e18683ff4f099
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRYts4:bc/y2lkF0+BlZ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012267-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2660	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_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
1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe
2660	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1116 wrote to memory of 2660	1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe	28
PID 1116 wrote to memory of 2660	1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe	28
PID 1116 wrote to memory of 2660	1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe	28
PID 1116 wrote to memory of 2660	1116	2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-11_713642a05dd79cd1afac4b4d100a990d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1116
- 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:2660

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
42KB

MD5
653482acca7b856d785fc3493a43e879

SHA1
3683c2ea957a9e17aff5be6e0ace0c78bf2e8157

SHA256
c76fcba5fa7e539cdf06e8c52e523285b80b2ecef46c77f7dc319490be5b4580

SHA512
a8c8f7f8aec3ff2c2228dd83588e05a53110a9f0dfa143b69c114c211713b8b42f21426a1731c2ef077f54d8357d9d51952db194b8dfb3678f347d9f909bac97

Download Submit
memory/1116-0-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1116-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1116-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2660-23-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download