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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
26/01/2024, 19:31
Behavioral task
behavioral1
Sample
2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
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Size
79KB
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MD5
6b6c9134af429a39a209cea1135cbd5d
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SHA1
7c7299a622d898e7cf760a7a1e6d65c34796b32a
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SHA256
7ff492cdfec5f0f9d945e5da32cc1a670b3d8ffcc19c8ab0c20c5e426b0911f0
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SHA512
b184b9fceb52b32f7046f5adb58cfc6cece56eae2041497310813d02b69feb0a0dd72343bef25a629bd58ffa99723cc68706dd95a198b4c92f7865e8ea34d11b
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdC:T6a+rdOOtEvwDpjNtA
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c0000000122c4-11.dat CryptoLocker_rule2 behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c0000000122c4-11.dat CryptoLocker_set1 behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000c0000000122c4-11.dat UPX behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3020 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2964 2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe -
resource yara_rule behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000c0000000122c4-11.dat upx behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-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 2964 wrote to memory of 3020 2964 2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe 28 PID 2964 wrote to memory of 3020 2964 2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe 28 PID 2964 wrote to memory of 3020 2964 2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe 28 PID 2964 wrote to memory of 3020 2964 2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2964 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3020
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
79KB
MD50f09231d0868a1102443e91fe3e8e86f
SHA153989f906415e00fc615ebe2a94085727f32f103
SHA256c431e9b0c75fc6781d406397def32ee703f685562c725b94f315dfb90823dbd3
SHA512da36a0aca0685041948d5e9085c290cd0270e537452b83166d6c0207cdd1055c12bbb131206ee236fe41e14caeb61cbbdfa625b62f1d3d57480587ceff4fe997