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Analysis
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max time kernel
149s -
max time network
155s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
16/04/2024, 00:34
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe
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Size
38KB
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MD5
8c7d5fa3aaa256b18bdc4a872bdd16df
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SHA1
742e29c429aefde6d61d05a967837edf9c17051f
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SHA256
e8705c2bbea7e5b35259da2b9211edc5199ad9d9bbb5d37aea92e7d27ff39fba
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SHA512
0c17b58510f16948d420665134e5d750dbfb2cca149bbe5e9331f35267590ed3e745701f86338c44514a7002639100b8c0e5c5634bb3bba431d2b25b562cfbd4
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SSDEEP
768:vQz7yVEhs9+js1SQtOOtEvwDpjz9+4/UkRYzMAZ+mX:vj+jsMQMOtEvwDpj5HcSYP5
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023281-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023281-12.dat 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-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation 2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2940 misid.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 3740 wrote to memory of 2940 3740 2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe 85 PID 3740 wrote to memory of 2940 3740 2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe 85 PID 3740 wrote to memory of 2940 3740 2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-16_8c7d5fa3aaa256b18bdc4a872bdd16df_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3740 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2940
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD5edc43340da6a5c56e45ed1e9c014c086
SHA10b721657812be1d5b8635e8800dda598052df384
SHA25618b5ccd58000a6a11be3bce7366534a5916e56eb7ec58f1e0aa2e2e0e91b0362
SHA512b8b885167aa028d1160d45e9aa9bd2d000f9c8e79623db4a29bf3a8b526cf16faa73a1e2325a5bdd315d7792bab31db6d9fd06d416d7bb2a9dc91c6406e72cad