af3e90f04d4545b802beede87283962e13d9103af3ed1ff2c82d534eaddeef29

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
24-04-2024 17:27

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General

Target

2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe
Size

42KB
MD5

1e8cbdd2660744013bbb32a1d8219afe
SHA1

8c1ddbcee5636671c3893d2e3850ac7acc72eb83
SHA256

af3e90f04d4545b802beede87283962e13d9103af3ed1ff2c82d534eaddeef29
SHA512

fdf1d82fa9d5f6ff8a221aee182fb557733f682aec1ba31e865fb04d093c2157636922072eb445453db06d9b58f828c4a2e2575b478e619e079952b92cdd9b38
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDU8p:bm74zYcgT/Ekn0ryfjr

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2868-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012252-11.dat	CryptoLocker_rule2
behavioral1/memory/2868-15-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2568-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2568-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2568	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_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 2868 wrote to memory of 2568	2868	2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe	28
PID 2868 wrote to memory of 2568	2868	2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_1e8cbdd2660744013bbb32a1d8219afe_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2568

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
43KB

MD5
27dccc41c7a29ff8cd65d8549ccbada9

SHA1
8b1b3d1b18d265190a3c06253c9d8f6667607ae3

SHA256
33a530901f1a6e0f271f7d9ef3bca1122e0297feb18d714f2bedaaf6cd16a8fb

SHA512
e7d73fc226199c40d368e8c296fdf8cb8d74d522b9c23a11fa2a8671335d0483a7f7a8545bb783590e6e3be8d4f8917896faa7aaed574fc22deaa4c19a5ac90d

Download Submit
memory/2568-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2568-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2568-25-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2568-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2868-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2868-1-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2868-2-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2868-4-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2868-15-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download