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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
27/04/2024, 05:15
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe
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Size
88KB
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MD5
d60b33922728cba1291b558fb3a47027
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SHA1
b834fd3fe03055a01eb9f4e5bae4ba3aa200c172
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SHA256
76aee393cf82dbf01bc2da343348cec201ad658987c50e9110857cb81c58e52c
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SHA512
55b6c525c3d4c10ef06c0ec2cf66e609a5c19d54aa851bbe38d7cd6860f017388a76816d016a17e7e9e59f7cc7cdfafa5bb74638ac01167c3e16a2df50828865
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SSDEEP
768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvAcD:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8AcD
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3916-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0010000000023b7b-13.dat CryptoLocker_rule2 behavioral2/memory/3916-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3856-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3856-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3916-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3916-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3856-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/3856-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/3916-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0010000000023b7b-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/3916-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3856-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3856-27-0x0000000000500000-0x000000000050F000-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-1-5-21-2860750803-256193626-1801997576-1000\Control Panel\International\Geo\Nation 2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3856 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 3916 wrote to memory of 3856 3916 2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe 84 PID 3916 wrote to memory of 3856 3916 2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe 84 PID 3916 wrote to memory of 3856 3916 2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-27_d60b33922728cba1291b558fb3a47027_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3916 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3856
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
88KB
MD587c735a2325615e974136583dbc85ddd
SHA1935ebb96315a68e72fc8afa3ad0241203c9ead06
SHA256f92aaab97dea2d061c98bfaff13209929741aec61ed7d4bd3a3bd16cd798f862
SHA5121b75dcd5b6b81bc28016764c1b762168ed00acbb3cbc9e0b76c891d114fa5ce470941e2eac4a5095a48a124f081499ddb3ff3b4ab23b86a08a0abdfd553e4680