Analysis
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max time kernel
149s -
max time network
154s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
25-01-2024 15:33
Static task
static1
Behavioral task
behavioral1
Sample
2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe
Resource
win7-20231215-en
General
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Target
2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe
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Size
73KB
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MD5
5a8cbdca041d93444b838adff9073349
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SHA1
e1dc0efe2da0250211e8772082445d16f374a48a
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SHA256
e037ecfeed98a9c21d08fca695fd9dc199d684f6ee343c25b42c0db21f2c9054
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SHA512
6b82168329c33cfe06373769e499af4d5e911e1f4745bb99bec09deb41bdac72aee17661d6d6b1a7cbe3f9d925198bfaaca22fe09aed5529bcbf415f02432c88
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SSDEEP
1536:X6QFElP6n+gJQMOtEvwDpjBZYTjipvF2bx1sdI:X6a+SOtEvwDpjBZYvQd2R
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
Processes:
resource yara_rule \Users\Admin\AppData\Local\Temp\asih.exe CryptoLocker_set1 -
Executes dropped EXE 1 IoCs
Processes:
asih.exepid process 2460 asih.exe -
Loads dropped DLL 1 IoCs
Processes:
2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exepid process 3040 2024-01-25_5a8cbdca041d93444b838adff9073349_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
Processes:
2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exedescription pid process target process PID 3040 wrote to memory of 2460 3040 2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe asih.exe PID 3040 wrote to memory of 2460 3040 2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe asih.exe PID 3040 wrote to memory of 2460 3040 2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe asih.exe PID 3040 wrote to memory of 2460 3040 2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe asih.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_5a8cbdca041d93444b838adff9073349_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3040 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2460
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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\Users\Admin\AppData\Local\Temp\asih.exeFilesize
73KB
MD57844c8a293ddf5955e2ac864a665ed00
SHA1283f3cfb9c6a85e7c3bd735fa22e509ae06356f3
SHA256847209f298d65e641441dfff77dda9d8fb77163c058ea55433b4614deba09228
SHA512e8add8fadf786359cf3f0b940ca8edc74fa513497dfd195596fe061341b96a907fac5dd5e2e922d848a5d5d7194d9fe2d6b8e9b1b1e1bf4e6369f8016cf11734
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memory/2460-15-0x0000000000490000-0x0000000000496000-memory.dmpFilesize
24KB
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memory/2460-21-0x0000000000240000-0x0000000000246000-memory.dmpFilesize
24KB
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memory/3040-0-0x00000000001D0000-0x00000000001D6000-memory.dmpFilesize
24KB
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memory/3040-2-0x0000000000290000-0x0000000000296000-memory.dmpFilesize
24KB
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memory/3040-1-0x00000000001D0000-0x00000000001D6000-memory.dmpFilesize
24KB