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Analysis
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max time kernel
149s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
13/02/2024, 13:08
Static task
static1
Behavioral task
behavioral1
Sample
2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe
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Size
57KB
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MD5
c2549664ca1bfc8f92b6b4b7e2108a7a
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SHA1
d0448728fc3f3110326c7a4bccdec476811d671b
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SHA256
43a22394a89719a34435fecb84c20d51652a8cc13994bd31f720e73342528e7d
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SHA512
52d7650a077d16d358edcaf5bc34a5a4f39d828811d4da7ad21610e9245657bc92309fb8ae91b8cdf769e19fa184505dfd5f3948a09968db363fe2895310975d
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SSDEEP
1536:qmbhXDmjr5MOtEvwDpj5cDtKkQZQRKb61PTG:BbdDmjr+OtEvwDpjMY
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000012252-11.dat CryptoLocker_rule2 behavioral1/memory/3032-13-0x00000000020A0000-0x00000000020B0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 3 IoCs
resource yara_rule behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/3032-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000012252-11.dat UPX behavioral1/memory/3032-13-0x00000000020A0000-0x00000000020B0000-memory.dmp UPX behavioral1/memory/2128-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/3032-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2128-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2128 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 3032 2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_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 3032 wrote to memory of 2128 3032 2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe 28 PID 3032 wrote to memory of 2128 3032 2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe 28 PID 3032 wrote to memory of 2128 3032 2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe 28 PID 3032 wrote to memory of 2128 3032 2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-13_c2549664ca1bfc8f92b6b4b7e2108a7a_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2128
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
57KB
MD598a6d9bf4d66249fef3607221661488c
SHA1db9eab97e87122c95795d96f70f52114e5ed886e
SHA2569910a04703769eb0f58aee7246fdbcd2ce23d4f205a0f9686aac5afb1951ddb8
SHA5126e17e0925467a96cccc2b8e7c75648b2819976f749fc26370ae1fdd1bf3ddc03111b1bc80ec34bb18d8e56f8fe5ec2dfbeb38af235d163a5b0c522c2ea326b08