Analysis
-
max time kernel
150s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
19/02/2024, 16:41
Behavioral task
behavioral1
Sample
2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe
Resource
win10v2004-20231222-en
General
-
Target
2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe
-
Size
80KB
-
MD5
89aa2bba10fab9a0ec5268f9581ad259
-
SHA1
4b5ed772687d67a1a07c28001aa50631f5a2e9c5
-
SHA256
aee0d92a4bf5e02905ab80aa811d95227a8eab289ceb7951fcdf7844c8986a23
-
SHA512
aca8d43439a2d8550e1d04e7bf47539fc5a069fc38e1a3cd57ac45452c8e3d10aa9dbf0fe54aac19f6c7c25fde4b04f2f6a1bc87e7f0c9cf29245d41378bf5a1
-
SSDEEP
1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBd08:T6a+rdOOtEvwDpjNtD
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000012185-11.dat CryptoLocker_rule2 behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2832-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2832-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000012185-11.dat CryptoLocker_set1 behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2832-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2832-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000012185-11.dat UPX behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2832-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2832-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2832 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2312 2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe -
resource yara_rule behavioral1/memory/2312-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000012185-11.dat upx behavioral1/memory/2312-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2832-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2832-26-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2312 wrote to memory of 2832 2312 2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe 28 PID 2312 wrote to memory of 2832 2312 2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe 28 PID 2312 wrote to memory of 2832 2312 2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe 28 PID 2312 wrote to memory of 2832 2312 2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-19_89aa2bba10fab9a0ec5268f9581ad259_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2312 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2832
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
80KB
MD57cb7ffb555a6dfc01997c209a1576ffc
SHA16e73253ca0e8f4935f6f529a2591c85ad69dc974
SHA2560f2980e3347914aaf261e3665784844ba44ba41460e79b7d428c39a97b3369f2
SHA5123cef5e52f407b9ca7bff69c81d93ffadac2149f9d1a96742ea7dde8b45b87045ed26092672c166af0f2c4d57609c151a4270da55cd7ba00157e95f773001dfff