Analysis
- max time kernel
148s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system - submitted
25/01/2024, 17:27
Static task
static1
3 signatures
Behavioral task
behavioral1
Sample
2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe
Resource
win7-20231215-en
7 signatures
150 seconds
General
- Target 2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe
- Size 59KB
- Sample240125-v1trtsbfd4
- SHA256 de414d068eba12269971ea9fe9901f6ae1862764382878ae7a58794f5cf5c4a6
- MD5 4a2016ad3dfdab9815285b97dd6536be
- SHA1 796a4d1f953b926854151312661faa568f4d3b48
- SHA512 4704a31e4fefb20087f57bd0ef565749377c446497c6b0b084a3d287bf3aa9739585fce97d0a59497cc14acc7fca1152c1ff8b6dffdccb40bf1c1ed92f917d95
- SSDEEP 1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTx:TCjsIOtEvwDpj5HE/OUHnSMO
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral2/memory/3444-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/files/0x0006000000023202-13.dat CryptoLocker_rule2 behavioral2/memory/2724-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/3444-19-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 behavioral2/memory/2724-55-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_rule2 - Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral2/memory/3444-0-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/files/0x0006000000023202-13.dat CryptoLocker_set1 behavioral2/memory/2724-17-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/3444-19-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 behavioral2/memory/2724-55-0x0000000000500000-0x000000000050E000-memory.dmp CryptoLocker_set1 - Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation 2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-996941297-2279405024-2328152752-1000\Control Panel\International\Geo\Nation misid.exe - Executes dropped EXE 1 IoCs
pid Process 2724 misid.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3444 wrote to memory of 2724 3444 2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe 88 PID 3444 wrote to memory of 2724 3444 2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe 88 PID 3444 wrote to memory of 2724 3444 2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe 88
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_4a2016ad3dfdab9815285b97dd6536be_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3444 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:2724
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Local\Temp\misid.exe
- Size 59KB
- SHA256 cc6a525be376ecbaf5b72b0c96193228d95f6dec99e76df7bac569d5f84c2d81
- MD5 d01f43bfe8fdc98f45821b87ee1014bd
- SHA1 b8941c6b56bbc232e421c9e1dad6afa555e9e4eb
- SHA512 adce48c59b69a1c7735517bc3f16a98266b5cb1be33890132386f7d70fba89164fb7473aa458c89dfb8339c74bcb0769d6d3d6beb9d59568a9c33e480e6eedf5
- SSDEEP 1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTg:TCjsIOtEvwDpj5HE/OUHnSMz
- MD5 SHA1 SHA512 SSDEEP