Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
12-03-2024 01:56
Static task
static1
Behavioral task
behavioral1
Sample
2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe
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Size
30KB
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MD5
bee6a316be130c0aa5e275fd2e3dd81e
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SHA1
fbb961bbc6772c029157d65c5d3d2a98f0bc5231
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SHA256
f19c0d878ef868ee19cf3bf9c3879c2568d4821e2429b99686059a8f1528d0c7
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SHA512
f0e988d7559cdcce12ee1435a5dacee8526b6e94378edd8a6c08bbd6597d0eaacd156641f9ed9cd4fe21c8262b5cdc31d1685cf50c1497f0c4bf1e5a008f9b69
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SSDEEP
768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIO/xuhx:q0zizzOSxMOtEvwDpj/arQH
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2276-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000900000001221f-11.dat CryptoLocker_rule2 behavioral1/memory/2276-13-0x0000000001E70000-0x0000000001E80000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2276-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2276-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2276-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2276-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000900000001221f-11.dat UPX behavioral1/memory/2276-13-0x0000000001E70000-0x0000000001E80000-memory.dmp UPX behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2276-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2952-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2952 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2276 2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2276 wrote to memory of 2952 2276 2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe 28 PID 2276 wrote to memory of 2952 2276 2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe 28 PID 2276 wrote to memory of 2952 2276 2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe 28 PID 2276 wrote to memory of 2952 2276 2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-12_bee6a316be130c0aa5e275fd2e3dd81e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2276 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2952
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
30KB
MD557c1d1e8bec615d5f872352b595e10bd
SHA152f44ef1eb134d0aaac82852046bee0d13f0ea5d
SHA2568f5661c9a46f46f3fee802344738ac4da1edd2e513f4cc5771c7695fe4cff900
SHA51228e6d0e1602bfa4b4b995577670dd50d5cae47454e5900c34acfd4a4481ebd45469dca21a9c6a24ffd1bdd7e7cc6dc2a98b628495ca6beca955bc2c76b919a2e