Analysis
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max time kernel
150s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240419-en -
resource tags
arch:x64arch:x86image:win10v2004-20240419-enlocale:en-usos:windows10-2004-x64system -
submitted
30/04/2024, 05:03
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe
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Size
46KB
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MD5
79fd5d29068aded2cac5d074908b689e
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SHA1
3c0f17244550db3505502f1f841de664a32d85cc
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SHA256
3bcb78be2ce626c1d2eea795e3a89e742ee62f0a63a0c498d9029246254bba7d
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SHA512
db5ed065675734484bbe9d8917397587ae540b3433f8004bb276a4cfbd40d7a5f1438e4434e607955eecea77e7b9f4f81132834dfbd94931e9dfd0526a3374f9
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SSDEEP
768:79inqyNR/QtOOtEvwDpjBKccJVODvy3SpJ:79mqyNhQMOtEvwDpjBzckqSX
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000c000000023b5e-13.dat CryptoLocker_rule2 behavioral2/memory/3044-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1880-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3044-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000c000000023b5e-13.dat CryptoLocker_set1 behavioral2/memory/3044-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/1880-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation 2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1880 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3044 wrote to memory of 1880 3044 2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe 84 PID 3044 wrote to memory of 1880 3044 2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe 84 PID 3044 wrote to memory of 1880 3044 2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-30_79fd5d29068aded2cac5d074908b689e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3044 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1880
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5c8074876480817526d805309501b197a
SHA197bca7e916f5f3bc8c6c8c3b5facf80fcd0473fa
SHA256717a142ed9f8e1e7c2baf4811e8f25d5ab53e54686daf6ca434c4640a376ce51
SHA51241e367c42281dcdd04bc6489bd92d25e9d872ac18fe476e382828dc2a74610c18b340948549989c1ddc890c64ebacf90cfb502b1fb3ad84e312a6b98c709f9d1