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Analysis
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max time kernel
148s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
14/02/2024, 14:48
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe
Resource
win10v2004-20231222-en
General
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Target
2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe
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Size
60KB
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MD5
9943330e8a089b103bcaf24a1271a172
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SHA1
6022ff0cb803dc5fb169b07c3d906c97febcde99
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SHA256
437d9ca31a28c5dfa58a5670810994acaf88902fe64a64b6db8687330994217b
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SHA512
ec73d859eef607e730913861928d61bf6b52df0200c5aed6d80c72ccd94b57bd3dd47c5b755c7584b224b7b2c9092ff21a3fe82ae2b5c4a34038ce333e87cf30
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61vSbgtsv:BbdDmjr+OtEvwDpjM8H
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2544-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000001225c-11.dat CryptoLocker_rule2 behavioral1/memory/2716-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2544-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2544-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2716-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2544-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2716-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2544-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2716-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2544-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a00000001225c-11.dat UPX behavioral1/memory/2716-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2544-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2544-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp UPX behavioral1/memory/2716-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2716 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2544 2024-02-14_9943330e8a089b103bcaf24a1271a172_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 2544 wrote to memory of 2716 2544 2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe 28 PID 2544 wrote to memory of 2716 2544 2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe 28 PID 2544 wrote to memory of 2716 2544 2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe 28 PID 2544 wrote to memory of 2716 2544 2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_9943330e8a089b103bcaf24a1271a172_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2544 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2716
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
60KB
MD50fe255c4feef0cf2cd7e642c85cb56bf
SHA1d7d6ae9238b4a0122fbdd285b2edef9ca0a51fba
SHA256a88681a90513fbc722d41e7dde15531b6375bb0275aaa565f2db8234cf276991
SHA5127ec9e339e73a5c65488bc0790efbf1dcc2598fb7976119d447c50066cb74fdf5be3099b60a42e099d173c1b85d64287e1e764899f5ebf66aab494b0c1fb3a97f