Analysis
-
max time kernel
149s -
max time network
156s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
20/04/2024, 11:28
Static task
static1
Behavioral task
behavioral1
Sample
2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe
Resource
win10v2004-20240412-en
General
-
Target
2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe
-
Size
50KB
-
MD5
a267cbb625d8cfed9e13a2d59598b962
-
SHA1
d2cef5b38751e57a707599172e58d36503b86c47
-
SHA256
ccfcd250a04869415c79dc55c821484fc96820312d5a607364e0e900b5b70df2
-
SHA512
2bd49c369bddbdd46df32d91f9affaf1630500ae0d5e59996df7c1769003d28aeb86c81e3c68589c48addbcbc95e1361abbe812bd26bb85bedf0b6a13c32ee97
-
SSDEEP
768:6Qz7yVEhs9+4OR7tOOtEvwDpjLHqPhqlcnvhx5/xFRHnzc:6j+1NMOtEvwDpjr8hhX9o
Malware Config
Signatures
-
Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2784-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001224c-11.dat CryptoLocker_rule2 behavioral1/memory/2784-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2892-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2892-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2784-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001224c-11.dat CryptoLocker_set1 behavioral1/memory/2784-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2892-18-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2892-28-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
Detects executables built or packed with MPress PE compressor 5 IoCs
resource yara_rule behavioral1/memory/2784-0-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/files/0x000b00000001224c-11.dat INDICATOR_EXE_Packed_MPress behavioral1/memory/2784-16-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2892-18-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress behavioral1/memory/2892-28-0x0000000000500000-0x000000000050F000-memory.dmp INDICATOR_EXE_Packed_MPress -
Executes dropped EXE 1 IoCs
pid Process 2892 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 2784 2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe -
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 2784 wrote to memory of 2892 2784 2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe 28 PID 2784 wrote to memory of 2892 2784 2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe 28 PID 2784 wrote to memory of 2892 2784 2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe 28 PID 2784 wrote to memory of 2892 2784 2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe 28
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-20_a267cbb625d8cfed9e13a2d59598b962_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2784 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2892
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
50KB
MD50b7a1ac5b87268a74b8888144c522b9f
SHA19169696ea2b547f2544bcf69300c57ddb6659838
SHA256e3d980870897cf5de2278641038ff7fbda41c704a49b14db319ac1a65511395d
SHA5128b079f95322babf33bb018a492b612647dd7f28a26d07f2fdde1e6072e172f6755b2ec58884e34cc29b0b15c1b7ac0cfcb61f7a2c624e02bf1a126cfe6bf5bfb