a74b0bcb4af736f46b287de7e9b0d7531bee10e6e055dac1baca578506387195

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
20-05-2024 18:58

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General

Target

2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe
Size

47KB
MD5

e52b76a19f5b9be5fd9b4321658b6d8e
SHA1

3977a8ab708c8974f40148ba4bafbab464672b57
SHA256

a74b0bcb4af736f46b287de7e9b0d7531bee10e6e055dac1baca578506387195
SHA512

83f23e08119d04e7cb7c1f4eb226796e2a45e9a1d449ff36554f9db8568c3d575ecbab8e7494019f34008e9742283bad3aea286aaff77540ae15fa09ceea3ede
SSDEEP

384:e/4wODQkzonAYsju5N/surDQtOOtEvwDpjqIGROqS/WccJVJwi2B5oCCM8CLW2V4:79inqyNR/QtOOtEvwDpjBKccJVODvy3p

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 3 IoCs

resource	yara_rule
behavioral1/memory/2684-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000e000000015a98-11.dat	CryptoLocker_rule2
behavioral1/memory/2684-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2684-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000e000000015a98-11.dat	CryptoLocker_set1
behavioral1/memory/2684-14-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2812	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2684	2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_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 2684 wrote to memory of 2812	2684	2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe	28
PID 2684 wrote to memory of 2812	2684	2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe	28
PID 2684 wrote to memory of 2812	2684	2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe	28
PID 2684 wrote to memory of 2812	2684	2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_e52b76a19f5b9be5fd9b4321658b6d8e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2684
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2812

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\asih.exe

Filesize
47KB

MD5
eb0bb1f30b8e6776917ebe4ca039d032

SHA1
f0526537770bcecdb32593d31dfeeb226956d418

SHA256
31fd9089d648d2151e7a517d5dbcf33278c4cfdf18e29de747f8acfb3c5366e7

SHA512
7fea0c5d3b22f4379fb69a6877d63430b6c4fd81dc656420ca89ec764fa77709ed5d2e2270fa0e384bbbd6f4bf84b859b6913dcd8b2d3983a26ef700c0facd63

Download Submit
memory/2684-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2684-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2684-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2684-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2684-14-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2812-17-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2812-24-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download