681d15aa01e067817652eea5de0fecce1ab7871cf13af632f88dd702e89aee0f

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240419-en
resource tags

arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 03:35

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General

Target

2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe
Size

31KB
MD5

670ccd3847578f3a40fe4ee7b5905559
SHA1

552083134f0726f999d67b09339a0fc0aae75593
SHA256

681d15aa01e067817652eea5de0fecce1ab7871cf13af632f88dd702e89aee0f
SHA512

a5dca447bb63066912c394abf30fbd53bfdcde2e98772eecece0d0fc372fbec35e8b43627e7d73d3f66f1b7223da358f79224f6f275c596e2cfa042d202d519d
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGO/:bG74zYcgT/Ekd0ryfjF

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2484-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001228a-11.dat	CryptoLocker_rule2
behavioral1/memory/2484-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3028-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3028-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3028	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2484	2024-05-02_670ccd3847578f3a40fe4ee7b5905559_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 2484 wrote to memory of 3028	2484	2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe	28
PID 2484 wrote to memory of 3028	2484	2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe	28
PID 2484 wrote to memory of 3028	2484	2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe	28
PID 2484 wrote to memory of 3028	2484	2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-02_670ccd3847578f3a40fe4ee7b5905559_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2484
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:3028

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
14b2e68b470568117809310fd0f9aeb0

SHA1
750b3d35c7a4f5e26f864530857da6f709059698

SHA256
831902f0ae2f04c0e2821079ad90302f77d4bdc76898fd945fb92779f2454272

SHA512
a08ad2567463628846de10ece1ddff39a51aa29b6cbf56b72e968e5a75026ab709809a4834136a9c026e3d2997fcf39e36557fec9f275183298b84208aaca8a8

Download Submit
memory/2484-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/2484-2-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/2484-9-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2484-1-0x00000000005B0000-0x00000000005B6000-memory.dmp

Filesize
24KB

Download
memory/2484-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3028-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/3028-18-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/3028-25-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/3028-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download