Analysis
-
max time kernel
149s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
02/06/2024, 00:52
Behavioral task
behavioral1
Sample
2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe
Resource
win10v2004-20240426-en
General
-
Target
2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe
-
Size
53KB
-
MD5
cdcd4fd2a1334baaf591246721695dfd
-
SHA1
ae5e840b9e2244a36d1d55ee01a589b9d8079c4a
-
SHA256
b35cf07f9383c1c405d9a9644d15c304284bd5933d028e2b8f47be9db69d79a0
-
SHA512
4572f7630a4138b84279d7a9d0e460db688d0b5bc7f4504134cf301e18ba793378fa8fb63d9b6a28c94957c462e1bb999a6ea7fe776f98ffc428244244aec0af
-
SSDEEP
768:bODOw9UiamWUB2preAr+OfjH/0S16avdrQFiLjJvtOXFVI:bODOw9acifAoc+vD
Malware Config
Signatures
-
Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2696-0-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001565d-11.dat CryptoLocker_rule2 behavioral1/memory/2696-15-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2828-25-0x0000000008000000-0x000000000800F000-memory.dmp CryptoLocker_rule2 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2696-0-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/files/0x000c00000001565d-11.dat UPX behavioral1/memory/2696-15-0x0000000008000000-0x000000000800F000-memory.dmp UPX behavioral1/memory/2828-25-0x0000000008000000-0x000000000800F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2828 lossy.exe -
Loads dropped DLL 1 IoCs
pid Process 2696 2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe -
resource yara_rule behavioral1/memory/2696-0-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/files/0x000c00000001565d-11.dat upx behavioral1/memory/2696-15-0x0000000008000000-0x000000000800F000-memory.dmp upx behavioral1/memory/2828-25-0x0000000008000000-0x000000000800F000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2696 wrote to memory of 2828 2696 2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe 28 PID 2696 wrote to memory of 2828 2696 2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe 28 PID 2696 wrote to memory of 2828 2696 2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe 28 PID 2696 wrote to memory of 2828 2696 2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_cdcd4fd2a1334baaf591246721695dfd_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
PID:2828
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
53KB
MD5650d41a6d4f0f62a71b0787f91721071
SHA180ec2bcea5848e880e615250eb6d072c014171d5
SHA25640de92f1e3a68fec56b2f38694ca1c7543628b8099d7e3878164e7cf75c42d2a
SHA5121980f0f8c25559dafde106d16f44c2729bb930fcd2695f50a2a219e4a7201ef1a75f4b0d2acaa2d79665838a993cda7503123f0ed0971950df5ad3b329e4773f