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Analysis
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max time kernel
164s -
max time network
195s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
28/01/2024, 12:38
Behavioral task
behavioral1
Sample
2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe
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Size
80KB
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MD5
76324d9a531f0692e61d805efb265085
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SHA1
2143f1017b99d63a2ed332e2e648707a06466905
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SHA256
c83729f157c88f74c52c2cb93a4d665be1300f565b0f6d1f9459997d599e706c
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SHA512
251be0d0b6d6cce2d7195aeeaac61ee68ae2e09589a130f09e840d4a9b883ad737177a1d8b8dded6245d1a2fe25b181fd7fdae0a0fa26c2a288d1e09b140e0ec
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdWa:T6a+rdOOtEvwDpjNt9
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2564-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2564-13-0x0000000002480000-0x0000000002490000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0034000000015c8d-11.dat CryptoLocker_rule2 behavioral1/memory/2564-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2952-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2564-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2564-13-0x0000000002480000-0x0000000002490000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0034000000015c8d-11.dat CryptoLocker_set1 behavioral1/memory/2564-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2952-28-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2564-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2564-13-0x0000000002480000-0x0000000002490000-memory.dmp UPX behavioral1/files/0x0034000000015c8d-11.dat UPX behavioral1/memory/2564-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2952-28-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2952 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2564 2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe -
resource yara_rule behavioral1/memory/2564-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2564-13-0x0000000002480000-0x0000000002490000-memory.dmp upx behavioral1/files/0x0034000000015c8d-11.dat upx behavioral1/memory/2564-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2952-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2952-28-0x0000000000500000-0x0000000000510000-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 2564 wrote to memory of 2952 2564 2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe 29 PID 2564 wrote to memory of 2952 2564 2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe 29 PID 2564 wrote to memory of 2952 2564 2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe 29 PID 2564 wrote to memory of 2952 2564 2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-28_76324d9a531f0692e61d805efb265085_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2564 -
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
80KB
MD5510a08cd34ed958d1a810c5fb0b2094e
SHA119b44e4ddaddee07adcd8da0b83ecbad7b5498c0
SHA25625959f242a4ae72572e7d9d6618389df3f742875ec088c8d5da42633d8a4fa68
SHA5124fb53b0be3d30a076b82dc811ee23e090235601a0a984ea81a874eb2e5bfa409e3a0bf408c308cbf6080c645619009c1187d42b1144ed2d26f664bad64c281ac