Analysis
-
max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20231222-en -
resource tags
arch:x64arch:x86image:win10v2004-20231222-enlocale:en-usos:windows10-2004-x64system -
submitted
12-02-2024 20:19
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe
Resource
win10v2004-20231222-en
General
-
Target
2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe
-
Size
45KB
-
MD5
c913df8288269952cc622638604b10d0
-
SHA1
e9f27c9481843c1cc9cb171d664630206a52d4b3
-
SHA256
49b4e54e40f03b07f52dfc5a5e75a0172c2492f3c6712c87736e73f6449fccbe
-
SHA512
4c484c871101b4447e35f0942c31dac995c19137b9ac7cf649b095197a6dc36289a510df9f5d5dfc2df4aa6fe2051d3f5d66b86e9b270758504759239ff4a6f4
-
SSDEEP
768:V6LsoEEeegiZPvEhHSG+gDYQtOOtEvwDpj/MLaHaMMm2X3rtLSvd3:V6QFElP6n+gMQMOtEvwDpjyaHaXvOv9
Malware Config
Signatures
-
Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule C:\Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1168293393-3419776239-306423207-1000\Control Panel\International\Geo\Nation 2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2216 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exedescription pid process target process PID 3512 wrote to memory of 2216 3512 2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe asih.exe PID 3512 wrote to memory of 2216 3512 2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe asih.exe PID 3512 wrote to memory of 2216 3512 2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe asih.exe
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-12_c913df8288269952cc622638604b10d0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3512 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2216
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
45KB
MD5fdbd91e809be981015839e819b63ba0c
SHA132460ce5ad8d917af39e429679457765f9286407
SHA2562fdbe14aca4564166754d5b539b59b55989b2bf736a45a768f697e15120bbbea
SHA512987e53d8e04e72cecf493974dede3d3d9f3e1338a2079e5bad5beb213d86c070c12e215532575fbab45dfd5ebd54830aae2408bc2d7766ab889cf59ba59580c7