Analysis
-
max time kernel
16s -
max time network
119s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
29/04/2024, 13:31
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe
Resource
win10v2004-20240419-en
General
-
Target
2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe
-
Size
32KB
-
MD5
6b188f5813927070e5af5e9d694988ec
-
SHA1
5e8e1f12c003169f50b64f751b6105aa361eff28
-
SHA256
c5186a2af6da9a77837b63c90133184aa927f1268045333c3f69d5ae9a56e2f1
-
SHA512
eb94f295bbfabaf0a013fbbfb67d0e440b3b20ecab46eb25ce24fee17dfe72cb2257c5e51134cb98c892de1721241b1b95e11b59a3a4235472768d49d5d1508b
-
SSDEEP
384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgRi:b/yC4GyNM01GuQMNXw2PSjSKkcJRi
Malware Config
Signatures
-
Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral1/files/0x000a000000015f7a-10.dat CryptoLocker_rule2 -
Executes dropped EXE 1 IoCs
pid Process 2852 retln.exe -
Loads dropped DLL 1 IoCs
pid Process 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_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 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe 2852 retln.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3060 wrote to memory of 2852 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe 28 PID 3060 wrote to memory of 2852 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe 28 PID 3060 wrote to memory of 2852 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe 28 PID 3060 wrote to memory of 2852 3060 2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-29_6b188f5813927070e5af5e9d694988ec_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3060 -
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:2852
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
33KB
MD59d197a39ffcb6fdf4331213f87965bbc
SHA1b64b366582c3f123334f3a09815f5eadffeda9c7
SHA25676859ead6ee0944ffcf2b223e7b662d014b3b7ad67f2670be1ee092a0023a0b9
SHA51299ebd8f1a8fa35933e74775181963034cc1410ae2b33ff5cbfaef0702c1640b1e09b7fca40ce369445ed68ba04ee4183824912fa1a0962fb8b744387109724c5