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Analysis
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max time kernel
148s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
27/03/2024, 05:43
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe
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Size
63KB
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MD5
b19ab53c9eae891c0cf528dae6b86b5e
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SHA1
5a513b2a84f4c19fd53d7089d3df67b03cc5132e
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SHA256
690dbb9adfe55efaaa843807d58b3067f2f8da1ec331de00e2138e5182e6e96b
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SHA512
8d308a9162d048f56788346bc7520cb14751c1778aac8204b0d8dc5e967095106c8a2e32cafd4f98aac2d6f4aaf647d113588554fc578d508bd372a9f9a8565e
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPOYRmNxt5I52kGEKI+:6j+1NMOtEvwDpjr8ox8UDEKF
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000012247-11.dat CryptoLocker_rule2 behavioral1/memory/2068-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2500-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2068-27-0x0000000002480000-0x000000000248F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2500-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000012247-11.dat CryptoLocker_set1 behavioral1/memory/2068-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2500-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2068-27-0x0000000002480000-0x000000000248F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2500-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2068-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x0009000000012247-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2068-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2500-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2500-28-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2500 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2068 2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_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 2068 wrote to memory of 2500 2068 2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe 28 PID 2068 wrote to memory of 2500 2068 2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe 28 PID 2068 wrote to memory of 2500 2068 2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe 28 PID 2068 wrote to memory of 2500 2068 2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-27_b19ab53c9eae891c0cf528dae6b86b5e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2068 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2500
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
63KB
MD501d711d5abed9b842a6dc17eec20a857
SHA15614e51754d480e23152fe98ee13f27d518d285a
SHA2567466d152d83dc06c91b419668dd451eea1ee90405ce96c7cd1045350ce96fca8
SHA512b02117d504fa77254999e60cc5a20bf5563de44179fe7bf3d56a0148d22ff9969d4a3ff051ec9ebe9af76e192b11bc365019c21c464dbad743c0084e6b3e074d