Analysis
- max time kernel
134s - max time network
148s - 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, 15:45
Static task
static1
4 signatures
Behavioral task
behavioral1
Sample
2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe
Resource
win7-20231215-en
8 signatures
150 seconds
General
- Target 2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe
- Size 44KB
- Sample240125-s644msahcp
- SHA256 3f27c17d7854bd48e89c59d1e5fc0e812ca2f6ef4578c7eaeaf525571d291fd9
- MD5 9b695d799002f04cc385da5de40e7ebd
- SHA1 bba1bc18b5f9a11bd11ebcf842699d69dc5bd919
- SHA512 820ec2aff5477a1ca32ebed69c09e97b2a1729d0bf1e5eb9128824327779d673907e572b201a523d2608580ae00e553d826bb5235c2dadf21a904a5a80499c52
- SSDEEP 768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhbCi44vC7:6j+1NMOtEvwDpjr8dx4x
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2132-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000022480-13.dat CryptoLocker_rule2 behavioral2/memory/2132-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2352-53-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2132-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0009000000022480-13.dat CryptoLocker_set1 behavioral2/memory/2132-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/2352-53-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 - Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/2132-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0009000000022480-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/2132-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2352-53-0x0000000000500000-0x000000000050F000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_9b695d799002f04cc385da5de40e7ebd_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 2352 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 2132 wrote to memory of 2352 2132 2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe 88 PID 2132 wrote to memory of 2352 2132 2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe 88 PID 2132 wrote to memory of 2352 2132 2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_9b695d799002f04cc385da5de40e7ebd_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2132 -
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:2352
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 44KB
- SHA256 439300ae7db31efe63c19b2f1472539df2444309e72d09cee6ad8d713b0a8f93
- MD5 2bd41ce96eeadf71e910ea265be8c268
- SHA1 bb456e5d81994ae6114990e7d1dc39885c07c350
- SHA512 f2be6f8207efaa395fec113a6e1f165420d20e28493d72a6c3ed71b94d29586442034de86ad026ff993c3927f5d0202be3102f6c9e99ec2daa24e9a66eb8c0b6
- SSDEEP 768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhbCi44vCy:6j+1NMOtEvwDpjr8dx4c
- MD5 SHA1 SHA512 SSDEEP