Analysis
-
max time kernel
148s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
14-02-2024 15:31
Behavioral task
behavioral1
Sample
2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe
Resource
win10v2004-20231215-en
General
-
Target
2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe
-
Size
85KB
-
MD5
c403314e60ff1c2d76dffcd6feed72db
-
SHA1
997174c2b795217d4ba2667eaddbbe763b2f51ab
-
SHA256
d5e93a60ff3e1dffbd6d0a05b5cac1c6f46a4b906b0c18d1f57d0fd097d05b22
-
SHA512
bf2119048dd9bab0adfc4df8c64120e992a514ba231cfa46f237a49bb905683cd719a33959c8b3000301a21fe866b52a75f276176fcb84e594746e2c007acd30
-
SSDEEP
768:qkmnjFom/kLyMro2GtOOtEvwDpjeY10Y/YMsvlMdwPK80GQuchoIgtISET:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgC
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/files/0x000b000000012185-24.dat CryptoLocker_rule2 behavioral1/memory/2832-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2312-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2312-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2832-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/files/0x000b000000012185-24.dat CryptoLocker_set1 behavioral1/memory/2832-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2312-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2312-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2832-26-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/files/0x000b000000012185-24.dat UPX behavioral1/memory/2832-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2312-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2312-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2832-26-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2832 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2312 2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe -
resource yara_rule behavioral1/files/0x000b000000012185-24.dat upx behavioral1/memory/2832-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2312-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2312-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2832-26-0x0000000000500000-0x000000000050F000-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 2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe 1 PID 2312 wrote to memory of 2832 2312 2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe 1 PID 2312 wrote to memory of 2832 2312 2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe 1 PID 2312 wrote to memory of 2832 2312 2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe 1
Processes
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"1⤵
- Executes dropped EXE
PID:2832
-
C:\Users\Admin\AppData\Local\Temp\2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_c403314e60ff1c2d76dffcd6feed72db_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2312
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
86KB
MD5a3753a7abdbefea837970d886312aefd
SHA1642ef7e08eab3fee379ebc0f11db3ba0f3b04924
SHA2567aba2e5e9c849fc5855999bec9b58050db46a31ff9e21511ea880a612d5b9f45
SHA512c6ddc3f9f46f79a7bbb254103974f7d53f9177367d87c9be78109cc826fe5ea27b75708c44519836ecb21c8397ceddfa4452842e4b9e855bb567a7571937da99