Analysis
- max time kernel
150s - max time network
127s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
07/02/2023, 00:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20221111-en
windows7-x64
8 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20221111-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 299KB
- Sample230207-bbg7ysgg47
- SHA256 9b538f340f1f13fdd507dde8111d7f7680e356e8a0284b38d794933b087eb419
- MD5 e39bcd53121afd8d6be9a9082ebac2a0
- SHA1 224ea99fc4ad05ad541338854ff33cdbec83d5f8
- SHA512 c495513054c33b2465dc3278db05d15e5a6cda99d55f42ac9418c42252062730172edc0e5f578f9179a3c8c8c511f3ebf18fac601db59a6c6f7af1560b371e51
- SSDEEP 3072:U7b6bwgNLCbSRmQMr39rTIVZ7jQr2VjB86SAUVMauhOrQuQjiMTE5i96Pha5hN:0zgNLCbhhL6VZP3VdXUVsh9uQj9T2aL
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/1084-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2240-135-0x0000000000660000-0x0000000000669000-memory.dmp family_smokeloader behavioral2/memory/1084-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1084-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/344-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/344-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 3832 wchuibt 344 wchuibt - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 2240 set thread context of 1084 2240 file.exe 81 PID 3832 set thread context of 344 3832 wchuibt 90 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wchuibt Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wchuibt Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wchuibt - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1084 file.exe 1084 file.exe 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found 2680 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2680 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1084 file.exe 344 wchuibt - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2680 Process not Found Token: SeCreatePagefilePrivilege 2680 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 2240 wrote to memory of 1084 2240 file.exe 81 PID 3832 wrote to memory of 344 3832 wchuibt 90 PID 3832 wrote to memory of 344 3832 wchuibt 90 PID 3832 wrote to memory of 344 3832 wchuibt 90 PID 3832 wrote to memory of 344 3832 wchuibt 90 PID 3832 wrote to memory of 344 3832 wchuibt 90 PID 3832 wrote to memory of 344 3832 wchuibt 90
Processes
-
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2240 -
C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
PID:1084
-
-
C:\Users\Admin\AppData\Roaming\wchuibtC:\Users\Admin\AppData\Roaming\wchuibt1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3832 -
C:\Users\Admin\AppData\Roaming\wchuibtC:\Users\Admin\AppData\Roaming\wchuibt2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:344
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
- Path C:\Users\Admin\AppData\Roaming\wchuibt
- Size 299KB
- SHA256 9b538f340f1f13fdd507dde8111d7f7680e356e8a0284b38d794933b087eb419
- MD5 e39bcd53121afd8d6be9a9082ebac2a0
- SHA1 224ea99fc4ad05ad541338854ff33cdbec83d5f8
- SHA512 c495513054c33b2465dc3278db05d15e5a6cda99d55f42ac9418c42252062730172edc0e5f578f9179a3c8c8c511f3ebf18fac601db59a6c6f7af1560b371e51
- SSDEEP 3072:U7b6bwgNLCbSRmQMr39rTIVZ7jQr2VjB86SAUVMauhOrQuQjiMTE5i96Pha5hN:0zgNLCbhhL6VZP3VdXUVsh9uQj9T2aL
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wchuibt
- Size 299KB
- SHA256 9b538f340f1f13fdd507dde8111d7f7680e356e8a0284b38d794933b087eb419
- MD5 e39bcd53121afd8d6be9a9082ebac2a0
- SHA1 224ea99fc4ad05ad541338854ff33cdbec83d5f8
- SHA512 c495513054c33b2465dc3278db05d15e5a6cda99d55f42ac9418c42252062730172edc0e5f578f9179a3c8c8c511f3ebf18fac601db59a6c6f7af1560b371e51
- SSDEEP 3072:U7b6bwgNLCbSRmQMr39rTIVZ7jQr2VjB86SAUVMauhOrQuQjiMTE5i96Pha5hN:0zgNLCbhhL6VZP3VdXUVsh9uQj9T2aL
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wchuibt
- Size 299KB
- SHA256 9b538f340f1f13fdd507dde8111d7f7680e356e8a0284b38d794933b087eb419
- MD5 e39bcd53121afd8d6be9a9082ebac2a0
- SHA1 224ea99fc4ad05ad541338854ff33cdbec83d5f8
- SHA512 c495513054c33b2465dc3278db05d15e5a6cda99d55f42ac9418c42252062730172edc0e5f578f9179a3c8c8c511f3ebf18fac601db59a6c6f7af1560b371e51
- SSDEEP 3072:U7b6bwgNLCbSRmQMr39rTIVZ7jQr2VjB86SAUVMauhOrQuQjiMTE5i96Pha5hN:0zgNLCbhhL6VZP3VdXUVsh9uQj9T2aL
- MD5 SHA1 SHA512 SSDEEP