Analysis
- max time kernel
135s - max time network
143s - 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, 17:31
Static task
static1
4 signatures
Behavioral task
behavioral1
Sample
2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe
Resource
win7-20231215-en
8 signatures
150 seconds
General
- Target 2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe
- Size 93KB
- Sample240125-v358msbga9
- SHA256 c79bca8f939801dddc5fb7167e03c455199cc0b03119f2992f2445489346cc90
- MD5 832269203e7cf07dff5a24f86f61d7ba
- SHA1 97d1eeb8473c4759d6e2854ae25e16fe83b7f106
- SHA512 011bb4e49766887ef925a23c4316fb6a2c6752f7666f3e8895a51fab3535589c6f52b5a77899c17888c8bdcf3c6f20c198ae2bb65f922945da9450e1e9b8e35e
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJ9:xj+VGMOtEvwDpjubwQEIiVmkp
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0009000000022480-13.dat CryptoLocker_rule2 behavioral2/memory/4820-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2168-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/4820-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0009000000022480-13.dat CryptoLocker_set1 behavioral2/memory/4820-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/2168-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/4820-55-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 - Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/2168-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0009000000022480-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/4820-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2168-18-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/4820-55-0x0000000000500000-0x0000000000510000-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-1-5-21-3073191680-435865314-2862784915-1000\Control Panel\International\Geo\Nation 2024-01-25_832269203e7cf07dff5a24f86f61d7ba_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 4820 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 2168 wrote to memory of 4820 2168 2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe 86 PID 2168 wrote to memory of 4820 2168 2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe 86 PID 2168 wrote to memory of 4820 2168 2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe 86
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_832269203e7cf07dff5a24f86f61d7ba_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2168 -
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:4820
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 93KB
- SHA256 0a0812bc57cb6bc49e5f2f8bfab9b1fd984cdaba79071141208c806428422b62
- MD5 3827a11d1843d1caa0ca36bf418cf76e
- SHA1 5d79a2492b7001c7c02e1afe7f0ed581f49d5aac
- SHA512 b5dc2fb5621a90c39bf8b538f8078fbc9a425bf80853943b8c4ea2fa72ed589451e972d430710c77a5b9481dc5140c669eccd465fbe5624c03585bb33f51aa32
- SSDEEP 768:xQz7yVEhs9+4uR1bytOOtEvwDpjWfbZ7uyA36S7MpxRiWNa9mktJ2:xj+VGMOtEvwDpjubwQEIiVmk6
- MD5 SHA1 SHA512 SSDEEP