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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
19/02/2024, 01:42
Behavioral task
behavioral1
Sample
2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe
Resource
win10v2004-20231215-en
General
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Target
2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe
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Size
62KB
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MD5
99cf265bfcdc606e7eec424693ba3738
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SHA1
83a50c9089b4fc1ccf8daa0a0de034e436be1f78
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SHA256
c58a25a4d00c0dba3232c97c9813d3dc6f1eb0666cf556aae59c83f876029b0e
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SHA512
d72900ef01d5df6358adea8a351967221c09e36b4403a4c37eb6db2837d1697bfd4f09be3f30af914dc369d803cdcb26177695361ac1463317910f52de064a8f
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8M:1nK6a+qdOOtEvwDpjk
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1752-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a00000001650c-11.dat CryptoLocker_rule2 behavioral1/memory/3036-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1752-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/1752-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/3036-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1752-0-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a00000001650c-11.dat CryptoLocker_set1 behavioral1/memory/3036-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1752-15-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/1752-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp CryptoLocker_set1 behavioral1/memory/3036-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1752-0-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000a00000001650c-11.dat UPX behavioral1/memory/3036-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1752-15-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/1752-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp UPX behavioral1/memory/3036-27-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 3036 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1752 2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe -
resource yara_rule behavioral1/memory/1752-0-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000a00000001650c-11.dat upx behavioral1/memory/3036-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1752-15-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/1752-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp upx behavioral1/memory/3036-27-0x0000000000500000-0x000000000050F311-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 1752 wrote to memory of 3036 1752 2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe 28 PID 1752 wrote to memory of 3036 1752 2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe 28 PID 1752 wrote to memory of 3036 1752 2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe 28 PID 1752 wrote to memory of 3036 1752 2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_99cf265bfcdc606e7eec424693ba3738_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1752 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3036
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
62KB
MD57340135fc85db5a113a994734ec46460
SHA16d35ee8176f93315e5d1649d2662edd4e7295d17
SHA256bbbb06dd888cb5826cc77d3213723c1b67701ce6ec85b2ef8159685afbd81ba3
SHA512d8da0a08f23f8f9ba1f00769df278e6d8b6e3e7ca41acf5850cd5e5a9f8f65cc178a347f3b3938e4b2dc407e23c3a0f664c9285dc31a5340ab64db65b9b28499