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Analysis
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max time kernel
161s -
max time network
173s -
platform
windows10-2004_x64 -
resource
win10v2004-20240226-en -
resource tags
arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system -
submitted
13/03/2024, 20:34
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe
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Size
87KB
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MD5
73563319660481bd66bca2cd855ce9d1
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SHA1
ccc6978dcab79b2072b94d8d09b5e723e8cf1a80
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SHA256
0b75ab57a9dc0e397ff2cce783cb8628ff68a9a241978598d4a85098b3bda5e2
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SHA512
a8eddc33f957bcec37a438feddac51028601b7f5f321796809e7eb1460ca61de292d32c3904346ba510762d6f5baf9a3c4a3cad7151fa9e75b58de3dd4c6001c
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SSDEEP
768:XS5nQJ24LR1bytOOtEvwDpjNbZ7uyA36S7MpxRXrZSUfFKazNclMjNUvxgn3:i5nkFGMOtEvwDpjNbwQEI8UtzNcO8y3
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/1512-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0004000000022747-13.dat CryptoLocker_rule2 behavioral2/memory/1512-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 2 IoCs
resource yara_rule behavioral2/memory/1512-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/1512-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0004000000022747-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/1512-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/1056-26-0x0000000000500000-0x000000000050F000-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-1-5-21-2727153400-192325109-1870347593-1000\Control Panel\International\Geo\Nation 2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1056 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 1512 wrote to memory of 1056 1512 2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe 92 PID 1512 wrote to memory of 1056 1512 2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe 92 PID 1512 wrote to memory of 1056 1512 2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe 92
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-13_73563319660481bd66bca2cd855ce9d1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1512 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:1056
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
87KB
MD5f80079a811c7735e8a02afad74bfb95d
SHA13da1afa90d08a48a58a1b68b37f8416a7d91c190
SHA256e73492efc471787e19f16db8d2e31251564278293820685396faed49b57f14a5
SHA512fcc3f7c7eefbd989745dac15b5b019ea60cf38c5ef7ef920f508cb4568e0507c274887895138696fbf24f03ee81f17be3be08d521b0884d311f79266da3133e3