a9b09d26d8c4ae40cf48b5f104fe3e58d0bb65f70943d0ba9b44b6dcdcf8b335

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 04:26

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General

Target

2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe
Size

32KB
MD5

1cbd69a6bf2e48eb60f2e217ace4efa7
SHA1

8afe5abb43f9ed2fcc38f8e7a79d01de734b526d
SHA256

a9b09d26d8c4ae40cf48b5f104fe3e58d0bb65f70943d0ba9b44b6dcdcf8b335
SHA512

3bb37c3e56c3d078c613b55d2708db11e627860122937ab79b8d5c8f3b92183e7ef48e33eeafda0d2fa2a6f59a36768876254b40721d3f21daa699ac8921e594
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTG7X:bG74zYcgT/Ekd0ryfju

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/3040-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000014abe-11.dat	CryptoLocker_rule2
behavioral1/memory/2512-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3040-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2512-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2512	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
3040	2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2512	3040	2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe	28
PID 3040 wrote to memory of 2512	3040	2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe	28
PID 3040 wrote to memory of 2512	3040	2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe	28
PID 3040 wrote to memory of 2512	3040	2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_1cbd69a6bf2e48eb60f2e217ace4efa7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2512

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\hasfj.exe

Filesize
32KB

MD5
6637ebc08beab190442d392bfc7f8ea0

SHA1
cbcd038ff983f6aabce8c6049199a7a23a0b8d80

SHA256
17c3f43a2787dd42c8fd75fa5f2eefe644869961f579078efb6fbd4ba1718405

SHA512
ad74a08ddfa0ec6f9b3354ee42969e7079edc8567001ad35cde4c3ea072a2642ba9c8dd10bdeeaf6d2c653b793ed469bc8c88489b5bcf4bf3d443319c5480a1e

Download Submit
memory/2512-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2512-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2512-25-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2512-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3040-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3040-1-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/3040-9-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/3040-2-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/3040-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download