3fb1f3173d00a446df749369af4427bf730bdd8e20cd44953100db4f36645096

Analysis

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

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
04/05/2024, 12:27

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General

Target

2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe
Size

39KB
MD5

2e7b040f1026805ec825f4b74d435df4
SHA1

5207efeac9d3fcf9f9bab90c3755c9f9ab55bb39
SHA256

3fb1f3173d00a446df749369af4427bf730bdd8e20cd44953100db4f36645096
SHA512

5d93342ec31bc4f0fd668fe4ea64890a8fdeb6456392b5c5edae3f2920b09ce70a627ff04b884a1f0b7bb019a27a9e440aedc65227c12ba934a0ce3a0b50ab2f
SSDEEP

768:bA74zYcgT/Ekd0ryfjPIunqpeNswmxT4HmxXR:bA6YcA/X6G0W1BGBR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000015c3d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2388	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
2884	2024-05-04_2e7b040f1026805ec825f4b74d435df4_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 2884 wrote to memory of 2388	2884	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	28
PID 2884 wrote to memory of 2388	2884	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	28
PID 2884 wrote to memory of 2388	2884	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	28
PID 2884 wrote to memory of 2388	2884	2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-04_2e7b040f1026805ec825f4b74d435df4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2884
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2388

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
40KB

MD5
938696cf6c8abfa20ece8105d34239e4

SHA1
72dc7813eea1a8c9de55e8068fb1139ebba782cd

SHA256
3c71a7bdf2cf8e4e8c18bb08b24f4787180740a8d0a3fb094aac795ea6e340fa

SHA512
e4a57d14298b043151c970466b973712dffdf3899a194bc8efaca72cdeb56214e7b7a3854c75affcfd5e08c5245860677501c28e3a49c83ae7dc38aba7d5b19d

Download Submit
memory/2388-15-0x0000000002D00000-0x0000000002D06000-memory.dmp

Filesize
24KB

Download
memory/2388-22-0x0000000002920000-0x0000000002926000-memory.dmp

Filesize
24KB

Download
memory/2884-0-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2884-1-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2884-8-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download