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Analysis
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max time kernel
158s -
max time network
170s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
24/02/2024, 07:32
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe
Resource
win10v2004-20240221-en
General
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Target
2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe
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Size
40KB
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MD5
71f75002a4873ea7360152acd11d1135
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SHA1
83ebb969b50539ea5668c985944fd1259c20284b
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SHA256
4d012851947c0d127d8b7b43694d3f02c36abcc39ab9d4cc4304161368882dfa
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SHA512
95fbf5ba487b3128244bcbd9ba4adaa00e71d98e2641d00b3efb9ef35523d514a280abe191331811248fb5a5bff66d548612090fa2c4b9726f36378496424913
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh6/lM:6j+1NMOtEvwDpjrRy
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0008000000012249-11.dat CryptoLocker_rule2 behavioral1/memory/2476-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2168-14-0x0000000001EA0000-0x0000000001EAF000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2476-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0008000000012249-11.dat CryptoLocker_set1 behavioral1/memory/2476-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2168-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2476-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2168-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x0008000000012249-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2476-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2168-15-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2476-27-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2476 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2168 2024-02-24_71f75002a4873ea7360152acd11d1135_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 2168 wrote to memory of 2476 2168 2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe 28 PID 2168 wrote to memory of 2476 2168 2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-24_71f75002a4873ea7360152acd11d1135_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2168 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2476
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5f109cf79836e29c4d3c8692f20d4adce
SHA1aeaad3011ccf2c8c8bb8f9bd05b7c407fdb2881d
SHA256398a0fde9be05eb0b999cc76333ecbf70c9cfd096c3c94aff580e715e666b9fb
SHA51243d0b538dbe1dca4e55419990cedb5d227688c5d9e271aca6d84a96fc91092669bca69be858a26874ee1b6833031b19cbda317197d1ea0f9cc6921b6dc973eb3