a7ebf10020dc22c8dffd4f60b8a03b81cde63dde1d68edbe12851036a8872873

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
13/05/2024, 19:51

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General

Target

2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe
Size

35KB
MD5

e4fc79559e2a4066df0a2f75acef94a2
SHA1

fdb4ba6e53f58be33e9a2dbe570325f13fb4e4b4
SHA256

a7ebf10020dc22c8dffd4f60b8a03b81cde63dde1d68edbe12851036a8872873
SHA512

f37b0d0b219a6148cbdfe04175472dc1d103c902376ad96e530e08be81a4bc15666f10b0e0ef72081bd146094afbad780ed9638c3d5b6defe8c07f989e33a664
SSDEEP

384:bA74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUgIunIVpeNs23mAA6lxZ/:bA74zYcgT/Ekd0ryfjPIunqpeNswm6B

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012324-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2536	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2236	2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_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 2236 wrote to memory of 2536	2236	2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe	28
PID 2236 wrote to memory of 2536	2236	2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe	28
PID 2236 wrote to memory of 2536	2236	2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe	28
PID 2236 wrote to memory of 2536	2236	2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-13_e4fc79559e2a4066df0a2f75acef94a2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2236
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2536

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
35KB

MD5
f7d8289a2601223b9dcbbff84e47ee28

SHA1
453bd165e09b24f46c5fc207701e3352dec060ea

SHA256
2f353e47b83cded7f00e0d740bf5269f1359170eacbc5d5a4b6dc72aa3ba2aa0

SHA512
5ccfe3807acbce7ff8a31ebd211aa681a3050a212d52b628827f5ed0ada6bd6ba887dd7b2ead6d96cd16fcc4055b668c5b7145213a127d86fcc39feb67706ca8

Download Submit
memory/2236-0-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2236-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2236-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/2536-15-0x0000000001CF0000-0x0000000001CF6000-memory.dmp

Filesize
24KB

Download
memory/2536-22-0x0000000001CE0000-0x0000000001CE6000-memory.dmp

Filesize
24KB

Download