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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows10-2004_x64 -
resource
win10v2004-20231215-en -
resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system -
submitted
19/02/2024, 01:45
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe
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Size
42KB
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MD5
b0c03ab1c18adfd1cf71d32f60a36ca0
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SHA1
a11a70cffb945fa6be8fdf4619878ea910a37328
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SHA256
139707aba0063471568b1f944d3034e18120fc44ddd6dc24fbfdfbfd316c8cdf
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SHA512
fcb7fbaa116ac6726789f68d930a9837eee4ec557f81b68a084a4cd10b679f6993d06528f74743514c8ce40e75cc3d6797a717242ffc470d8cb78f0b1269496d
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SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhbCi44Cg:6j+1NMOtEvwDpjr8dx4E
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x00070000000231e2-13.dat CryptoLocker_rule2 behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/files/0x00070000000231e2-13.dat CryptoLocker_set1 behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 4 IoCs
resource yara_rule behavioral2/memory/3864-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/files/0x00070000000231e2-13.dat INDICATOR_EXE_Packed_MPress behavioral2/memory/3864-17-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral2/memory/2600-26-0x0000000000500000-0x000000000050F000-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-1-5-21-768304381-2824894965-3840216961-1000\Control Panel\International\Geo\Nation 2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2600 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 3864 wrote to memory of 2600 3864 2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe 84 PID 3864 wrote to memory of 2600 3864 2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe 84 PID 3864 wrote to memory of 2600 3864 2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe 84
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_b0c03ab1c18adfd1cf71d32f60a36ca0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3864 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2600
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
42KB
MD500d5fb2592a8351580862f48923d26d6
SHA19598eeff5aeca72dc0e4530a92d54c9ec4b97b34
SHA256d7db110953f8db26fba72cdd5d884ee5168a5970355989f0d62b41eaccec2e79
SHA512c46f70c29b7a0a50f7fac03d967ec93068c249b4b1d1db98f94eb090c5611fba66796414727cdcce6ee2c812fc2189749a558aaace161eed498d33f2dc9fb39a