0ddc6411db567f2e5cff46cc6620d0d0ffc0d0ef8753fb471302def94ed95258

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
31/05/2024, 18:14

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General

Target

2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe
Size

33KB
MD5

a9c052649c95a4a9c8f26b8466cbaccd
SHA1

28599688fe2839e1f13ab4b7781b8d2158ffd21e
SHA256

0ddc6411db567f2e5cff46cc6620d0d0ffc0d0ef8753fb471302def94ed95258
SHA512

706a63d6a612376b00b381ee6579c530508acffed34cbba665116665fa2dbf1319b60f49c38387cc84b647d7832a2304124f1e08e3258d87e80414abd9ad3c33
SSDEEP

384:bG74uGLLQRcsdeQ72ngEr4K7YmE8j60nrlwfjDUGTGXuat:bG74zYcgT/Ekd0ryfjw

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1404-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000014af6-11.dat	CryptoLocker_rule2
behavioral1/memory/1404-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1948-16-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1948-26-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1948	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1404	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_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 1404 wrote to memory of 1948	1404	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	28
PID 1404 wrote to memory of 1948	1404	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	28
PID 1404 wrote to memory of 1948	1404	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	28
PID 1404 wrote to memory of 1948	1404	2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-31_a9c052649c95a4a9c8f26b8466cbaccd_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1404
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1948

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
33KB

MD5
25aada3b3aa4c1c396953474966baacc

SHA1
c846f27f75564db69dd2ddbaa675c7a7c0903c51

SHA256
078766a84edef79159c1d088b5511588ec2705c51001fb29a7fdb3551693bde0

SHA512
9a5ab2b3c3d9a90b5a52955c6543c6b6b72296f8975f76005c15640bf8f6a4eb4bf880082eac2a73f8e4715896f5167fb18ebb1f8b2c79a307b204f335fcffab

Download Submit
memory/1404-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1404-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1404-9-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1404-1-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/1404-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1948-16-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1948-25-0x0000000001BC0000-0x0000000001BC6000-memory.dmp

Filesize
24KB

Download
memory/1948-18-0x0000000001BD0000-0x0000000001BD6000-memory.dmp

Filesize
24KB

Download
memory/1948-26-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download