fe40054ad21851967daa44f1e362602e9594d99e4ae9adb5afe09c45085ab51f

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21-04-2024 04:27

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General

Target

2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe
Size

69KB
MD5

c4a6ffa1c075040836c5191fd504119d
SHA1

ab6e33d9bdc42923f85c6be99d62343de4e6d389
SHA256

fe40054ad21851967daa44f1e362602e9594d99e4ae9adb5afe09c45085ab51f
SHA512

3ecd8b7cb42819ffa6e47388034bfaae54867c95b009cafdb92fd677ea1ae717bd48739f800be238e8df231407a0d1d0727c6106d47fe3e363b80c42e53e2220
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50Y:DW60sllyWOtEvwDpjwF85b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/3048-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001232e-11.dat	CryptoLocker_rule2
behavioral1/memory/3048-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2332-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/3048-1-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000d00000001232e-11.dat	CryptoLocker_set1
behavioral1/memory/3048-14-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2332-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2332	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	2024-04-21_c4a6ffa1c075040836c5191fd504119d_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 3048 wrote to memory of 2332	3048	2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe	28
PID 3048 wrote to memory of 2332	3048	2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe	28
PID 3048 wrote to memory of 2332	3048	2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe	28
PID 3048 wrote to memory of 2332	3048	2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_c4a6ffa1c075040836c5191fd504119d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3048
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2332

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
70KB

MD5
daf51865055fcf14cca245687e36ef76

SHA1
53d32e2fc5bf41ff444e1c6218fe9cd1e7192e95

SHA256
ad7ecb16d060bcf39461fbc2190a83e4f0b7500d5f36330e258ffcca304cf51b

SHA512
99c63fd1ae8f1f3049c0dd656e31a919b18920a3ca37ca5e52285b2f64909ecbe982141a7d887429e62ffcf8deced8886c094e3fe17a088094bad1d26d9966b8

Download Submit
memory/2332-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2332-18-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download
memory/3048-0-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3048-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/3048-1-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/3048-4-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/3048-14-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download