Analysis
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max time kernel
150s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
03-04-2024 06:43
Behavioral task
behavioral1
Sample
2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe
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Size
92KB
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MD5
56976a0761450b3eb2aac30a6360d0ab
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SHA1
6b209adb5446810007034bd243a4826cba5fd312
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SHA256
000c6ce0c22aa071a5915c8593174a684ac44f198f6d833a4efe0f29d39bbd95
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SHA512
cb64d14fa3fa40a4d40bc386f50b6cfb6dda896c0a92ee2c479c64b6d64b5b87ddf3599af532aa3e17b4c01d00a99ba5cb31d98a3287f17efebfd0bc2d01367a
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/b:zCsanOtEvwDpjBb
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
Processes:
resource yara_rule behavioral1/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_rule2 behavioral1/memory/2696-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2696-13-0x00000000022B0000-0x00000000022C0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
Processes:
resource yara_rule behavioral1/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 \Users\Admin\AppData\Local\Temp\misid.exe CryptoLocker_set1 behavioral1/memory/2696-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2696-13-0x00000000022B0000-0x00000000022C0000-memory.dmp CryptoLocker_set1 behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
Processes:
resource yara_rule behavioral1/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX \Users\Admin\AppData\Local\Temp\misid.exe UPX behavioral1/memory/2696-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2696-13-0x00000000022B0000-0x00000000022C0000-memory.dmp UPX behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
Processes:
misid.exepid process 2828 misid.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exepid process 2696 2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe -
Processes:
resource yara_rule behavioral1/memory/2696-0-0x0000000000500000-0x0000000000510000-memory.dmp upx \Users\Admin\AppData\Local\Temp\misid.exe upx behavioral1/memory/2696-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2696-13-0x00000000022B0000-0x00000000022C0000-memory.dmp upx behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-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
Processes:
2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exedescription pid process target process PID 2696 wrote to memory of 2828 2696 2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe misid.exe PID 2696 wrote to memory of 2828 2696 2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe misid.exe PID 2696 wrote to memory of 2828 2696 2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe misid.exe PID 2696 wrote to memory of 2828 2696 2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe misid.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-03_56976a0761450b3eb2aac30a6360d0ab_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2696 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2828
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
92KB
MD50c9bfeafc4a4458a02f781e38a810624
SHA18fbcae309dfccb9c6a6f4a0e7c748628c9598aef
SHA256143b8de2ab75fd258a5ef081958ccf217c3c2861e255f4ce21a466516b4ae9ec
SHA512dc73f5503dfdf4d6d9e8b0098ed8c1215e9ae0725157e7d9150b5970e1f3b4353c800aed660118d55cee3e271f02de28401401b73e557a1a353b7c6f801ede61