f59031b2d4470b0dd6460294f89fd663af249e7875074dcb319ab18f8cfd1a3c

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
16/04/2024, 04:35

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General

Target

2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe
Size

30KB
MD5

2894f120eb1de14f6df4583d9f8b0bcd
SHA1

b5f0b13cf4c915f1cfec67d45239bf1b15e7ccd9
SHA256

f59031b2d4470b0dd6460294f89fd663af249e7875074dcb319ab18f8cfd1a3c
SHA512

08d85af5c37de7f59d46fd1a8d9004bdc0b996a00cbc6b93529b7c589c368f1731fd9c77728d16b7ce6959a3662b20c1348eb6676e1bed6ae36ef1366cc912e4
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTG1:bG74zYcgT/Ekd0ryfj0

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1724-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b0000000139e0-11.dat	CryptoLocker_rule2
behavioral1/memory/1724-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1888-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1888-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1888	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1724	2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_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 1724 wrote to memory of 1888	1724	2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe	28
PID 1724 wrote to memory of 1888	1724	2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe	28
PID 1724 wrote to memory of 1888	1724	2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe	28
PID 1724 wrote to memory of 1888	1724	2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-16_2894f120eb1de14f6df4583d9f8b0bcd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1724
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1888

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
31KB

MD5
6521b36a3d68a915fe2ec94f29562e76

SHA1
28f9c601753798c983e550205802e434d2800e1e

SHA256
372fbda4f032b022b241b4ea5d3c538f0e3c1082130c11d04f5e2d541b3c215f

SHA512
d76a4c7d5a28d3664e09c977a811e4ea73e9f8060fbdabb0667947fe911210250403c03125f350f38e224401fe5f514a3c1e286e8ed3882b4d88eb677e06e425

Download Submit
memory/1724-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1724-1-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1724-2-0x00000000003D0000-0x00000000003D6000-memory.dmp

Filesize
24KB

Download
memory/1724-7-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/1724-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1888-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1888-18-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/1888-25-0x0000000000570000-0x0000000000576000-memory.dmp

Filesize
24KB

Download
memory/1888-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download