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Analysis
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max time kernel
149s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
18/04/2024, 12:36
Behavioral task
behavioral1
Sample
2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe
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Size
51KB
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MD5
59a5eb6ef8a2ce3f4da88feab58e563d
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SHA1
c09a037d7e785a6e1d7d26d8ec1792bbf48f80ed
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SHA256
b378d9cb56f4828ae28ac53603a8541346510e1484dc2f36abef2641f7487678
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SHA512
df8afcec514cb6d134593f2ecb7fa766ba7021eaf258ee1cee7d8f648ba631ff99b7504d2e4395b1eb0e5046b1cbdd14a3bd1299985aef80919119367d705cdd
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOL:z6QFElP6n+gKmddpMOtEvwDpj31iL
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2224-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c0000000122f2-11.dat CryptoLocker_rule2 behavioral1/memory/2224-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1140-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1140-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2224-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c0000000122f2-11.dat CryptoLocker_set1 behavioral1/memory/2224-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1140-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1140-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2224-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c0000000122f2-11.dat UPX behavioral1/memory/2224-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1140-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1140-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1140 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2224 2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe -
resource yara_rule behavioral1/memory/2224-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c0000000122f2-11.dat upx behavioral1/memory/2224-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1140-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1140-26-0x0000000000500000-0x0000000000510000-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
description pid Process procid_target PID 2224 wrote to memory of 1140 2224 2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe 28 PID 2224 wrote to memory of 1140 2224 2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe 28 PID 2224 wrote to memory of 1140 2224 2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe 28 PID 2224 wrote to memory of 1140 2224 2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-18_59a5eb6ef8a2ce3f4da88feab58e563d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2224 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1140
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
51KB
MD53c8884b0826efa8171d4019908df8390
SHA1d83463e04cc71bd6ac5439e5427f63ed9c5f6f3c
SHA256502fc5d69ee7874692a83b71e4cb4992dc21262e36cba2dfeef68dd2d7c8a9ac
SHA51253ae411c9493dbf0d7daf966252f50df8565c86474cd40d0d754e19dfcdc8bf2062e8080bf933959bdc3a7f6210727237c6800cc064c1b8d58178a70e2202796