Analysis
- max time kernel
148s - max time network
154s - 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, 17:26
Static task
static1
4 signatures
Behavioral task
behavioral1
Sample
2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe
Resource
win7-20231215-en
8 signatures
150 seconds
General
- Target 2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe
- Size 47KB
- Sample240125-vz8vcsbfc2
- SHA256 06dc692486aa72583cedea5dd433ca6f99f6efd4972e43bfa36e350a93ca13b2
- MD5 421327f0efe660165dfaa4685c9a4c06
- SHA1 3c90a2617b3bf468de1ed48245e3fa1141de45af
- SHA512 6b29b520f0d77e0f321251047d0a5ba74fd21ed7fbea1ecc053f4aca2133f9aac3c543178b8fa8c0591f91d98ff8a955296249e6e52b2a8cc8bdb23f81779dad
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaAs:xj+VGMOtEvwDpjy+Tr
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2748-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0006000000023218-13.dat CryptoLocker_rule2 behavioral2/memory/2748-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4020-54-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2748-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0006000000023218-13.dat CryptoLocker_set1 behavioral2/memory/2748-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/4020-54-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 - Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/2748-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0006000000023218-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/2748-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4020-54-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress - 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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation 2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 4020 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 2748 wrote to memory of 4020 2748 2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe 88 PID 2748 wrote to memory of 4020 2748 2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe 88 PID 2748 wrote to memory of 4020 2748 2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_421327f0efe660165dfaa4685c9a4c06_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2748 -
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:4020
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 47KB
- SHA256 06c5fd8ffbfc1c18c0f6dfb00c8809bdbb439c70d031dc7090f095cb7af5c2d0
- MD5 f2618a06e5af96fcc236b587dca40272
- SHA1 4940ebcc3e844f459b9f3df87f16caf5eae30109
- SHA512 d4951b67a7a7aff200edee4d00b7f2d2efb156bd31b98603f5df314d73bd9851e7b6ccac236b8ff557a5984f3996101fe6dda13b86346cae8a879b33bfeeb3df
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaAl:xj+VGMOtEvwDpjy+Te
- MD5 SHA1 SHA512 SSDEEP