550fc871e32fa7e53e7ce0756a8361556c957b67b683b528f4af1f24a4735527

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
09/03/2024, 00:27

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General

Target

2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe
Size

63KB
MD5

1bb70577c0aed30211beaf3cc5a281f0
SHA1

4f735264be4cb1b27cde11977f73b9df6d0a507a
SHA256

550fc871e32fa7e53e7ce0756a8361556c957b67b683b528f4af1f24a4735527
SHA512

9fe4f67770ed5253d88cabcc054eb2c205a77181512a0f5f60962375da5fb59ba6beba639736062add220b3796b083d069c2db9db273f25b493a1e39a8e168b3
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjyaLccVCbmh85cU:V6a+pOtEvwDpjvY

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 2 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-13.dat	CryptoLocker_rule2
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/files/0x000b0000000126ab-13.dat	CryptoLocker_set1
behavioral1/files/0x000b0000000126ab-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2820	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_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 2188 wrote to memory of 2820	2188	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	28
PID 2188 wrote to memory of 2820	2188	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	28
PID 2188 wrote to memory of 2820	2188	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	28
PID 2188 wrote to memory of 2820	2188	2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-09_1bb70577c0aed30211beaf3cc5a281f0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2820

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

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
63KB

MD5
dd41de3a6d2b8dbfc464bbd363f8c74d

SHA1
6ba7e439c0d69642cac496facd8ec58690d5e90f

SHA256
f6a04e762a5871267525be696761715be4da6d163c7642fd379449eb44d91749

SHA512
781dd481edf1cc98f9d036157b6a4c085bc3be6a6e1704617e484882a2d7c0e17578709e73f67e754a01bac48f8239ae63f5d3f1eaa345c5acd1cecde734e3c7

Download Submit
\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
31KB

MD5
02f12a74323ceb1cc85fb41f942633e5

SHA1
1045f568ee0cdaa70955ec9ce6ffd64d247d2859

SHA256
53d792bffeed4aad21197d15d4f2b673b99dc9f62d9bd0170dc37bd34b9dfbc1

SHA512
baa83079f1ef7874c14ab324e3486ee8f832d36911af977c5b2e330cd8bd59aa933a83b1a437076f2a999870ff6ab6bafd29027eada176d33a0cc6c1e1fcb61f

Download Submit
memory/2188-1-0x0000000001CA0000-0x0000000001CA6000-memory.dmp

Filesize
24KB

Download
memory/2188-2-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2188-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2820-16-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2820-15-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download