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Analysis
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max time kernel
150s -
max time network
161s -
platform
windows7_x64 -
resource
win7-20240508-en -
resource tags
arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system -
submitted
09/05/2024, 14:54
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe
Resource
win7-20240508-en
Behavioral task
behavioral2
Sample
2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe
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Size
47KB
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MD5
a8bd32eb638321e2f9df23f350f8fc05
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SHA1
679141d317d917b2338c4d2f01508a7aacadb681
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SHA256
1e279ab7ad6d6b9c760399dc41dacbc849934cca615c23b92bf0ef180251382d
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SHA512
37cbac7e9ddacec4b95fc0bc5eccc01a22cea0e669032f00700a138c9314d2d381ef65be2deda65362059f32c097f58d04cea10cc2ec415edea9a0a188dd9892
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaRh+EP:xj+VGMOtEvwDpjy+TRh+EP
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d00000001226b-11.dat CryptoLocker_rule2 behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d00000001226b-11.dat CryptoLocker_set1 behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2060-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000d00000001226b-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/1724-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2060-16-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/1724-27-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 1724 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2060 2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_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 2060 wrote to memory of 1724 2060 2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe 28 PID 2060 wrote to memory of 1724 2060 2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe 28 PID 2060 wrote to memory of 1724 2060 2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe 28 PID 2060 wrote to memory of 1724 2060 2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_a8bd32eb638321e2f9df23f350f8fc05_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2060 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1724
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
47KB
MD598d33bdfb8359aa0da0fcd88c0143f08
SHA15455a9a6fc28b34c72f2535d4954e091c34b039b
SHA25601c528caf214d426e79c6a0ab577725c0e0743e220e70e73a5dd1691236c0dc3
SHA51228963fe2d171ce2b2fa2fe7507a5e834ed3961dcd3d8c0b5f71bae750f8ae54e58d5446858fcb48f6f6ff63219adaf5754a6cf6ae5a115c6f96ff5d985131b43