030f48a76491c0b53aedf055847ba7fe86689dc6f165cd45d5c878c6015e8ae3

Analysis

max time kernel
149s
max time network
151s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
29/05/2024, 15:45

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General

Target

2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe
Size

45KB
MD5

bf5f551746b6e5b285300a39b4ad5c30
SHA1

e619ff231b269af7624441a3c7852df8f981dceb
SHA256

030f48a76491c0b53aedf055847ba7fe86689dc6f165cd45d5c878c6015e8ae3
SHA512

d6d8d23fea7af31079867d5a65e8e64a06039f89858dc41017b6dd61c9bba30406a1e3f6569d28e820279294c9a1b248b189d4926279f807c61b457efcc8d6f9
SSDEEP

384:bm74uGLLQRcsdeQ72ngEr4K7YmE8jo0nrlwfjDUIDd:bm74zYcgT/Ekn0ryfjvd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2280-0-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000a000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/2280-12-0x0000000001EB0000-0x0000000001EBD000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2280-16-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1636-26-0x0000000008000000-0x000000000800D000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1636	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2280	2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_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 2280 wrote to memory of 1636	2280	2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe	28
PID 2280 wrote to memory of 1636	2280	2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe	28
PID 2280 wrote to memory of 1636	2280	2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe	28
PID 2280 wrote to memory of 1636	2280	2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-29_bf5f551746b6e5b285300a39b4ad5c30_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2280
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:1636

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
45KB

MD5
40b548eb2d28aa7abd2028ddbb72acf6

SHA1
5536111126e8dac9c72f0d7abbb04db3468e2ce5

SHA256
f0a4d8bd818b61c9ebc102d323543d1252fa7fb85a2f358d4271b23f371ec2f4

SHA512
c7ebdce3b287e7731db2a0b15ee2bce485c99b461decafe2435d04021073bd2222e8cef570d1209037fac1adb2d7bc45c5f901cbb4c432176581a86140148e51

Download Submit
memory/1636-18-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/1636-25-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1636-26-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2280-0-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download
memory/2280-1-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2280-9-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2280-2-0x0000000000580000-0x0000000000586000-memory.dmp

Filesize
24KB

Download
memory/2280-12-0x0000000001EB0000-0x0000000001EBD000-memory.dmp

Filesize
52KB

Download
memory/2280-16-0x0000000008000000-0x000000000800D000-memory.dmp

Filesize
52KB

Download