Analysis
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max time kernel
150s -
max time network
142s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
07-03-2024 00:31
Behavioral task
behavioral1
Sample
2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe
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Size
116KB
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MD5
2a34b004bed2b0c4c34981e72904124c
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SHA1
bbe554205c7de5012f09eb491296ce514c0ecde2
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SHA256
305accffa7f3c6fd1d086b85be4adfd476a9e4df57ec19825936f367aca24ac1
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SHA512
bee8e1fe55883c7e8e77c77a4f30cae67f90737f4aff46a0126df1db3730ef6957f7b30a6836a442ae1f7cd194e1bb382482035862d473ee2867c08f7558ffbb
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SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjCGYQbN/PKwNgerar/xw:T6a+rdOOtEvwDpjLzP
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000800000001222d-11.dat CryptoLocker_rule2 behavioral1/memory/2164-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000800000001222d-11.dat CryptoLocker_set1 behavioral1/memory/2164-14-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000800000001222d-11.dat UPX behavioral1/memory/2164-14-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2972 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2164 2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe -
resource yara_rule behavioral1/memory/2164-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000800000001222d-11.dat upx behavioral1/memory/2164-14-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2972-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2972-26-0x0000000000500000-0x0000000000510000-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 2164 wrote to memory of 2972 2164 2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe 28 PID 2164 wrote to memory of 2972 2164 2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe 28 PID 2164 wrote to memory of 2972 2164 2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe 28 PID 2164 wrote to memory of 2972 2164 2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-07_2a34b004bed2b0c4c34981e72904124c_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2164 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2972
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
116KB
MD58e433114c394d233054742d1c2577c4d
SHA1a765c9ab437e03dba8380f354a83921f56e67f9b
SHA2568e1743a3f3643f6c558b23f76e1c3c412860206d7047b6fac3217e9fd80b6bd1
SHA512824d0c65ffa5b4b2cf56d246ae866f7339d94ade7360f040bb8b702e66402d8a839c1fd819663611b5fef1fd993c72e76bec14a5a28acf69c346a36b0dae7ddb