Analysis
-
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
13-02-2024 00:37
Behavioral task
behavioral1
Sample
2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe
Resource
win10v2004-20231215-en
General
-
Target
2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe
-
Size
116KB
-
MD5
97c565f5b0b952f8ee18b025c22b033f
-
SHA1
87dba8147ceff7dbfc761c245f01fabf0b4d0bad
-
SHA256
4ef5d8b2a3cbbca0371784f6597302d60953941ff454c96d2b2f569234e014d0
-
SHA512
fecb69c1a7e3a2f0d0a677c36fbe4afe44f019e7456049b13dc5d5ef116d12f0ce709e362ab16490e7ab77600a7a58cf037a19841faf2f840f678de50fa61c7a
-
SSDEEP
1536:z6QFElP6n+gKmddpMOtEvwDpj3GYQbN/PKwNgp01pr:z6a+CdOOtEvwDpjczX
Malware Config
Signatures
-
Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000d0000000122a8-11.dat CryptoLocker_rule2 behavioral1/memory/944-12-0x00000000008B0000-0x00000000008C0000-memory.dmp CryptoLocker_rule2 behavioral1/memory/944-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1836-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000d0000000122a8-11.dat CryptoLocker_set1 behavioral1/memory/944-12-0x00000000008B0000-0x00000000008C0000-memory.dmp CryptoLocker_set1 behavioral1/memory/944-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1836-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000d0000000122a8-11.dat UPX behavioral1/memory/944-12-0x00000000008B0000-0x00000000008C0000-memory.dmp UPX behavioral1/memory/944-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1836-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 1836 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 944 2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe -
resource yara_rule behavioral1/memory/944-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000d0000000122a8-11.dat upx behavioral1/memory/944-12-0x00000000008B0000-0x00000000008C0000-memory.dmp upx behavioral1/memory/944-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1836-18-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1836-26-0x0000000000500000-0x0000000000510000-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 944 wrote to memory of 1836 944 2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe 28 PID 944 wrote to memory of 1836 944 2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe 28 PID 944 wrote to memory of 1836 944 2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe 28 PID 944 wrote to memory of 1836 944 2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-13_97c565f5b0b952f8ee18b025c22b033f_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:944 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:1836
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
116KB
MD5ec44ad785bfd4952dd824ec1f9a5f9c1
SHA1bbd3369531728b1734fec863692ac07841323a5a
SHA2563a8c84e3dcf6dcaeaeeca538f00cdcf8b8bc36ea06f1d2b783c4323eddd2677d
SHA51238b80c771bd1944a9216f70e7f837f4aabaf96ed1557d5ceaa6a72fd9d030616f1cdf2a006cb0e152d04510e4fa15278c0831ed3868d8b5c4f432fe630fe44fa