Analysis
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max time kernel
157s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
18/02/2024, 12:35
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe
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Size
39KB
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MD5
7e23282f4b4b2c2a320fcc115ac5dc6b
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SHA1
4f949fec39145bd58f6b5ade73e6d19aa7fd964b
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SHA256
cb4353f57d6aa4f51aff900a090e86e0d0c18f51df2d797fc1b4c8692d562b02
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SHA512
7cdccc47c783d47303ecbc59fa5ed30cdd68556f5092f99eb4fb9b446ea1e8bd926d233a5c91f71483e6a9a48c1aed64c17b8c31b6cc4558cfd8c08cc756dda2
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqh67/E:6j+1NMOtEvwDpjrRbE
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x000a000000023154-13.dat CryptoLocker_rule2 behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x000a000000023154-13.dat CryptoLocker_set1 behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x000a000000023154-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/2300-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2052-26-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
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-1-5-21-2398549320-3657759451-817663969-1000\Control Panel\International\Geo\Nation 2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2052 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 2300 wrote to memory of 2052 2300 2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe 86 PID 2300 wrote to memory of 2052 2300 2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe 86 PID 2300 wrote to memory of 2052 2300 2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-18_7e23282f4b4b2c2a320fcc115ac5dc6b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
39KB
MD55b53dbf4bcb7eaa2f356478e9c85e7cd
SHA14157b9c33241cf0b8782dca49345b5346648d5a7
SHA25667a57bb5f77ded38c9287489cd4e2279abb906bd1221c37f3d3a97aff2737c1c
SHA512becc319eb0a8d64a34cae4044ff275520b65de29bbb3fdd436777e2ab49f20bad26f9438b31dafa8507817ecf9466d80771444861ca645058613343d4b3193da