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Analysis
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max time kernel
142s -
max time network
157s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
06/03/2024, 15:44
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe
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Size
47KB
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MD5
a2a99b5d7bb819460524ebc45344ae4e
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SHA1
1cdc53a7a133b4b30c91f83f1b4073653d12ec19
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SHA256
27e8c821e6360597fb400dc2513d1f7a98eb26a3fe58ee4f2bcf0cbc2a636da9
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SHA512
d73c00ccd0744680e1e5a202d429ad81735796fae464fd96d477e38b1c5375928d07797952aef9730f01896cf1da237a3d659e01e6fbdb727f78453cfa011734
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SSDEEP
768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo22u:qmbhXDmjr5MOtEvwDpj5cDtKkQZQJ1Y
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000900000001227d-11.dat CryptoLocker_rule2 behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/3044-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000900000001227d-11.dat UPX behavioral1/memory/2624-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3044-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3044-13-0x0000000001EE0000-0x0000000001EF0000-memory.dmp UPX behavioral1/memory/2624-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2624 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3044 2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe -
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 3044 wrote to memory of 2624 3044 2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe 28 PID 3044 wrote to memory of 2624 3044 2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe 28 PID 3044 wrote to memory of 2624 3044 2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe 28 PID 3044 wrote to memory of 2624 3044 2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-06_a2a99b5d7bb819460524ebc45344ae4e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2624
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD55275ad029ebb9ec3dcbee0ee6da2af56
SHA1376b99fef4d6c817b870cd43ea9df135a4960604
SHA256e62de68ff8d93930557ebeb9c1bc780db41486b36f1e4eebfc9747881cc7e150
SHA51249cfdbe59838bac65d21a2dbe5f293e2e1fcd0926e0065c18c062056f598ac890609ad44a5d84e27a8176bbdc1edfc0b8c28b07917b5415d5af1ee57f48b9f99