Analysis
- max time kernel
140s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
25/01/2024, 15:48
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe
Resource
win7-20231215-en
7 signatures
150 seconds
General
- Target 2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe
- Size 60KB
- Sample240125-s8vmzsaac9
- SHA256 07e565a99ce6b79c029f0d58c19c2c200508aedc320dc1ea79b467008a0a55be
- MD5 bc5699063b4aa91e5ad6c6aafc867718
- SHA1 d1714b53b783571cf273ee19c02a2fddd4c65f4e
- SHA512 ed293064e9c1c5e17b8ceefb5e5e2a10fe9763ede87e3b1b06b7fbb3717010976d5ce51f1941ca7a2eb80e9c58fdedec451e7b7357b105baa05236a886c56da5
- SSDEEP 768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB1p:vj+jsMQMOtEvwDpj5Hy7B3gG8xzUw
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0009000000022480-12.dat CryptoLocker_rule2 - Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0009000000022480-12.dat CryptoLocker_set1 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 1132 misid.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4480 wrote to memory of 1132 4480 2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe 88 PID 4480 wrote to memory of 1132 4480 2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe 88 PID 4480 wrote to memory of 1132 4480 2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_bc5699063b4aa91e5ad6c6aafc867718_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4480 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:1132
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 60KB
- SHA256 47364300a085cc9a65348fa8ac06ebf69c86cd542c6e60f2afc5eb8a2505b7e0
- MD5 e9d54963df98fb6aed850de2111e0303
- SHA1 2a696f2d6d61048f640d1af519bb5e27725d3930
- SHA512 fe6f43b494d3c6f62d1ce2edbc7bca831bdef2453f2a2c81e31f3e79ee7d14ee5573893060cc603084ab148fccbfc9a1753884944ab65bea1e3aa6e4b8d77708
- SSDEEP 768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4hdCY8EQMjpi/Wpi3B3URiLnuoUwUsfqB1D:vj+jsMQMOtEvwDpj5Hy7B3gG8xzU2
- MD5 SHA1 SHA512 SSDEEP