Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
27-04-2024 22:29
Behavioral task
behavioral1
Sample
2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe
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Size
57KB
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MD5
489c396165e46053501f050f6de3ed83
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SHA1
56857850431a0d8fd581f45d4ab53fd31bbc2c91
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SHA256
a078e85bc1ffd483ff9bb7355355d348ac78db0731f1235f4095dfa0fbe5b6af
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SHA512
54a98305315e5964dd0d82416e1800745605dc5b43dc2b9cb47339094a25737a8170dff03d4e0d6029833d1258d3209aee5c3a366e3d58ddd54cd9f35e8e2311
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SSDEEP
768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPB2:H6QFElP6n+gou9cvMOtEvwDpjCpVXY2
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
Processes:
resource yara_rule behavioral1/memory/384-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 behavioral1/memory/384-14-0x0000000001DA0000-0x0000000001DB0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
Processes:
resource yara_rule behavioral1/memory/384-8-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 behavioral1/memory/384-14-0x0000000001DA0000-0x0000000001DB0000-memory.dmp CryptoLocker_set1 behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
Processes:
resource yara_rule behavioral1/memory/384-8-0x0000000000500000-0x0000000000510000-memory.dmp UPX \Users\Admin\AppData\Local\Temp\asih.exe UPX behavioral1/memory/384-14-0x0000000001DA0000-0x0000000001DB0000-memory.dmp UPX behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2004 asih.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exepid process 384 2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe -
Processes:
resource yara_rule behavioral1/memory/384-8-0x0000000000500000-0x0000000000510000-memory.dmp upx \Users\Admin\AppData\Local\Temp\asih.exe upx behavioral1/memory/384-14-0x0000000001DA0000-0x0000000001DB0000-memory.dmp upx behavioral1/memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
Processes:
2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exedescription pid process target process PID 384 wrote to memory of 2004 384 2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe asih.exe PID 384 wrote to memory of 2004 384 2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe asih.exe PID 384 wrote to memory of 2004 384 2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe asih.exe PID 384 wrote to memory of 2004 384 2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-27_489c396165e46053501f050f6de3ed83_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:384 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2004
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\asih.exeFilesize
58KB
MD55b12db17b98b5bda2aa1d4fea2b6ebb3
SHA1cea43c521e7059361c04260e12a4b9eca44f9748
SHA2561e7380ff6b7c33c850249bd92a3fbe47cb10cd8d8f506b812845212b32262846
SHA5127b1dac3d6f7e5392f84264c810cd7d7ebe479885966dbee75bd2df04780dd58e4e61c2fcdd03f61f7ab332303fc77f88752c69723dd33320f6fe219af94dd148
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memory/384-0-0x0000000000240000-0x0000000000246000-memory.dmpFilesize
24KB
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memory/384-9-0x0000000000240000-0x0000000000246000-memory.dmpFilesize
24KB
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memory/384-8-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/384-1-0x0000000000280000-0x0000000000286000-memory.dmpFilesize
24KB
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memory/384-14-0x0000000001DA0000-0x0000000001DB0000-memory.dmpFilesize
64KB
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memory/2004-16-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB
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memory/2004-18-0x00000000004F0000-0x00000000004F6000-memory.dmpFilesize
24KB
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memory/2004-25-0x00000000001D0000-0x00000000001D6000-memory.dmpFilesize
24KB
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memory/2004-26-0x0000000000500000-0x0000000000510000-memory.dmpFilesize
64KB