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Analysis
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max time kernel
148s -
max time network
151s -
platform
windows10-2004_x64 -
resource
win10v2004-20240412-en -
resource tags
arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system -
submitted
15/04/2024, 06:39
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe
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Size
48KB
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MD5
e246c6417fa44b04a03c78b3c443bcda
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SHA1
bcdb07b73931e189ca3e815e48944487f18c3de2
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SHA256
c144d332c354ad8bdd1b535689d039ecb78f9e997f8254e93ba7d303876c8838
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SHA512
ac188ca1fd530b66e65de8fed469b0d6bc0f5012413915f130f7c2f60a6bbeb67b55b7fab8a5dbab51f0969cddf17f13ebc4fdebacbc437266f26f3077b6322e
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SSDEEP
768:xQz7yVEhs9+4uR1bytOOtEvwDpjWE6BLbjG9RzhwaN4PYG:xj+VGMOtEvwDpjy+TN4t
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0005000000022f61-13.dat CryptoLocker_rule2 behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0005000000022f61-13.dat CryptoLocker_set1 behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral2/memory/3728-0-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x0005000000022f61-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/3100-18-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3728-17-0x0000000000500000-0x0000000000510000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/3100-27-0x0000000000500000-0x0000000000510000-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-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation 2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3100 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 3728 wrote to memory of 3100 3728 2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe 85 PID 3728 wrote to memory of 3100 3728 2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe 85 PID 3728 wrote to memory of 3100 3728 2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-15_e246c6417fa44b04a03c78b3c443bcda_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3728 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:3100
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
48KB
MD509f54ea9f2d3003869089fafacd537c4
SHA1114bc5399391cc2aa16edced60022ac3f1d24d0d
SHA256e63f994135092887248f31d06ebee596a96aefd3cf12cd5067aefdae3d631c99
SHA51257fdbe9c39f0f8f1e180354c12a0f2057b5c2255f0976b709e0e2ee7dc5d4f825477438db9636553b58ae870f1d00fe526a9869ad54ea0ec8f2b185a91d03f33