cda27fe4501ea7cd945e9ad630ae36b3e6c878a21da73fac75936956fdf83afd

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
11-05-2024 18:37

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General

Target

2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe
Size

44KB
MD5

74a38fbfc415c852b600ae35b02789b1
SHA1

d135e0f4e198d4bc39b7f9915b11947151ba0e64
SHA256

cda27fe4501ea7cd945e9ad630ae36b3e6c878a21da73fac75936956fdf83afd
SHA512

af9884541105a891278dc8533c5e64be95e7a98ebb262ab187459e2f9e4cde12bcbb52c65b25c83fbfdcbd1f0a125977c31e689d5bf2d46ab3f4fafc976d8b4e
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIIF:bm74zYcgT/Ekn0ryfjUF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2528-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000013420-11.dat	CryptoLocker_rule2
behavioral1/memory/2528-15-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1120-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1120-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1120	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	2024-05-11_74a38fbfc415c852b600ae35b02789b1_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 2528 wrote to memory of 1120	2528	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	28
PID 2528 wrote to memory of 1120	2528	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	28
PID 2528 wrote to memory of 1120	2528	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	28
PID 2528 wrote to memory of 1120	2528	2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-11_74a38fbfc415c852b600ae35b02789b1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2528
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1120

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
44KB

MD5
6c102d363a0257b57a0dce8f7779606d

SHA1
0b59a114d6840eb1e3f3577d0c50e92b56b233b7

SHA256
7f20135c7a465a6abc1d7c4b24213107ed8ebc61b17b42554d04193031623c8c

SHA512
80ae3b2ede7701729e1e236a999cf84333dba7ff854194e6838bc453dc4bb4110638c39d7ef233815dac9e7d64f416e04d8190d737552a4959272c73674e0381

Download Submit
memory/1120-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/1120-18-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/1120-25-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1120-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2528-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2528-1-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000001BD0000-0x0000000001BD6000-memory.dmp

Filesize
24KB

Download
memory/2528-9-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/2528-15-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download