Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240419-en -
resource tags
arch:x64arch:x86image:win7-20240419-enlocale:en-usos:windows7-x64system -
submitted
17/05/2024, 03:33
Behavioral task
behavioral1
Sample
2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe
Resource
win7-20240419-en
Behavioral task
behavioral2
Sample
2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe
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Size
80KB
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MD5
8b4389fcd39e6bcb128816fc847bd20f
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SHA1
b895eafe43ea201cc55362762cc1ec8659fca421
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SHA256
d0a7f6b75303f8874947440ca86fb91989165bb7b604f1df068e68b6be9bcba4
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SHA512
87607a1404e799c6ed7f1efbc21e7cc0306734097bbccef27ecec25104a26bdb9592ccd59961df3f811705d6de2a37e719e94592aae00a9b360a0928417c4d5b
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1ky7QM:zCsanOtEvwDpjY
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001228a-11.dat CryptoLocker_rule2 behavioral1/memory/3020-12-0x0000000000610000-0x0000000000620000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1208-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001228a-11.dat CryptoLocker_set1 behavioral1/memory/3020-12-0x0000000000610000-0x0000000000620000-memory.dmp CryptoLocker_set1 behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1208-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c00000001228a-11.dat UPX behavioral1/memory/3020-12-0x0000000000610000-0x0000000000620000-memory.dmp UPX behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1208-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1208 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 3020 2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe -
resource yara_rule behavioral1/memory/3020-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c00000001228a-11.dat upx behavioral1/memory/3020-12-0x0000000000610000-0x0000000000620000-memory.dmp upx behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1208-26-0x0000000000500000-0x0000000000510000-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 3020 wrote to memory of 1208 3020 2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe 28 PID 3020 wrote to memory of 1208 3020 2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe 28 PID 3020 wrote to memory of 1208 3020 2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe 28 PID 3020 wrote to memory of 1208 3020 2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-17_8b4389fcd39e6bcb128816fc847bd20f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3020 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1208
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
81KB
MD55b8f4711fb74bb03769fda9d8eba0d3a
SHA18431761704afe60531a952bd8cb352349722399d
SHA256c966f316715653dcb964d3aec4425a3bddd78d3ba98b6f1d575248f97ea992c3
SHA5128e0cbfc9655fc70aec9ddea733f6058b9998b626eced419e57b3cab12409e437712451f927264f2a5b826d8ba73c72d7550e81aabf724b1a6941b91b7f2ff491