Analysis
-
max time kernel
10s -
max time network
121s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23/02/2024, 12:50
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe
Resource
win10v2004-20240221-en
General
-
Target
2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe
-
Size
28KB
-
MD5
92aa3dfa8691f919541fd84daea2717a
-
SHA1
6fc306fbb727b0dca9690704586dd4e332fa2f94
-
SHA256
4fc821f8e0fab3f4f3c9698a75cd2e92a098c1a8552e52297d7e4a5d32d6a8a4
-
SHA512
2de4cc3f8f448fec138f84e5d9b23fded8a44c28bfed0d01b76155ca5cff4eae2f6f0482f82c57fb4ae9777bc82744b050f7143ba3c55650cd436bc2c2fb1658
-
SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zznum+UUA3:b/yC4GyNM01GuQMNXum+3A3
Malware Config
Signatures
-
Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000b00000001224c-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2124 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe -
Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
-
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe 2124 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2120 wrote to memory of 2124 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe 24 PID 2120 wrote to memory of 2124 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe 24 PID 2120 wrote to memory of 2124 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe 24 PID 2120 wrote to memory of 2124 2120 2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe 24
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_92aa3dfa8691f919541fd84daea2717a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2120 -
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
PID:2124
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
28KB
MD5485c41fa1d2f63d1421170405104642b
SHA1c521545aa3b4aaffe42d499dbffc3b21760e966c
SHA256d982d00f1d89802c5bfe978550ccae63afff54faea5d4222ccd53d9171f6e8e9
SHA512a2caede05142b57b86cdf9ee54e6f660401b592729efaccba76085b090905035be8d9dd8bd33bdc795b7033d014f4199c0534844931ca185f63e0976d5cc25ba