Analysis
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max time kernel
148s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
23-05-2024 19:42
Behavioral task
behavioral1
Sample
2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe
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Size
85KB
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MD5
f158118e8047c8dcbe0592d0804db400
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SHA1
e00c29644b1ef0c013c61476cb03ff42bbe8327d
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SHA256
c934a16da796aa8043d62684f58f4201b377fd9d548c5ec7a9bd949838d7394d
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SHA512
7c007e4bf10819cc382daa83e447803907e7c3946b86a592a485c10a1bb4bf91fac82e926d1e33d9d76038c7b122f5de68aa7b057c1ba4a014be51fc3f8bc8ce
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJ0tq1kyJS19:zCsanOtEvwDpjX
Malware Config
Signatures
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Detection of CryptoLocker Variants 4 IoCs
resource yara_rule behavioral1/memory/2732-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000014284-11.dat CryptoLocker_rule2 behavioral1/memory/2732-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 4 IoCs
resource yara_rule behavioral1/memory/2732-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000014284-11.dat CryptoLocker_set1 behavioral1/memory/2732-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 4 IoCs
resource yara_rule behavioral1/memory/2732-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000014284-11.dat UPX behavioral1/memory/2732-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2664 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2732 2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe -
resource yara_rule behavioral1/memory/2732-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000014284-11.dat upx behavioral1/memory/2732-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2664-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
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 2732 wrote to memory of 2664 2732 2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe 28 PID 2732 wrote to memory of 2664 2732 2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe 28 PID 2732 wrote to memory of 2664 2732 2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe 28 PID 2732 wrote to memory of 2664 2732 2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-23_f158118e8047c8dcbe0592d0804db400_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2732 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2664
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
85KB
MD53a812af115192d19384cf36209b9f555
SHA1fbb13268756545297779109b30bf495a28b0f056
SHA25626146d577c02e4adaea0f49af2d320bcf01ffc029569f4df7c6f7a0057bb9139
SHA512601f56864c984c18932ea38b0201820c45c556b0980af7a0efbb9d38ec3de123ea7b6337e60aa4dbaded747b03641e77cb2fb228b35b87b5edff054dae3d343a