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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
29/01/2024, 11:26
Behavioral task
behavioral1
Sample
2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe
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Size
77KB
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MD5
1d4ebb9e1587421a497d7297b840cd35
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SHA1
556cf245f834403206f5b7b6db0b4a33df98b2be
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SHA256
df52b85187aac34c21e964818ca10d4c27d071e4339922ca325363764229a4d8
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SHA512
8f9666dc19d8899d45bce5d8341e34fa93a013c3df42a092876dd7cac45c3fd59a7a049fda845fbbc273dc623dab31362906216ce64fd39c96063a87a991d966
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOA+YSP75:T6a+rdOOtEvwDpjNb
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a0000000139b6-11.dat CryptoLocker_rule2 behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3028-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a0000000139b6-11.dat CryptoLocker_set1 behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3028-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a0000000139b6-11.dat UPX behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3028-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3028 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1920 2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe -
resource yara_rule behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a0000000139b6-11.dat upx behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3028-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/3028-26-0x0000000000500000-0x0000000000510000-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 1920 wrote to memory of 3028 1920 2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe 28 PID 1920 wrote to memory of 3028 1920 2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe 28 PID 1920 wrote to memory of 3028 1920 2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe 28 PID 1920 wrote to memory of 3028 1920 2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-29_1d4ebb9e1587421a497d7297b840cd35_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1920 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3028
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
77KB
MD52ba6e1106f8ceff8dca4bf8afdeea973
SHA10987073ddea8303b9fdf1538f4603579d489577f
SHA256d73a347b0e45a715f920ce091bb787b7480d62636fede19c964f9e492b69f1a4
SHA5122208794a0f67b3ec89265aa09f1b45cabe3fc0425bdfec2efc3485396d83f3a89a16e9ebee7fc3d94342b7e1444a0232371a5920cf55a010156d9a42f149feaf