Analysis
- max time kernel
151s - max time network
105s - platform
windows10-2004_x64 - resource
win10v2004-20230220-en - resource tags
arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system - submitted
25/03/2023, 22:58
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20230220-en
windows7-x64
7 signatures
150 seconds
Behavioral task
behavioral2
Sample
file.exe
Resource
win10v2004-20230220-en
windows10-2004-x64
10 signatures
150 seconds
General
- Target file.exe
- Size 274KB
- Sample230325-2xte8aef59
- SHA256 6b7bb7ed7e486cdc4e3a1d67a598aeee5a74e3c58f94e48e5fa626d6562f8688
- MD5 1206d408c9c22639d99d6ce5c920999c
- SHA1 e7aa3be99e1d1787d4bcd58a97c912b362e33c43
- SHA512 aad73c5bd46a69768c1281f2d03a4d03484cb79a6e07f3d7f26edabc5c7fcef594d4b67fb11ed28f8859827b5ec9785126bf56c2dca8e4915c3f5e1c35cac33f
- SSDEEP 6144:ITG53HXaagTpCNXzDGPD6jls1vsOMTfz:ITGtXfgTUN3YwuKz
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Extracted
Family
-
smokeloader
Botnet
-
lab
Extracted
Family
-
smokeloader
Version
-
2020
C2
-
http://host-file-host6.com/
-
http://host-host-file8.com/
rc4.i32
rc4.i32
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 3712 rtwbiah 2164 rtwbiah - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 3376 set thread context of 2036 3376 file.exe 84 PID 3712 set thread context of 2164 3712 rtwbiah 93 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process 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 rtwbiah Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtwbiah Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI rtwbiah Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 2036 file.exe 2036 file.exe 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found 2616 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2616 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 2036 file.exe 2164 rtwbiah - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2616 Process not Found Token: SeCreatePagefilePrivilege 2616 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3376 wrote to memory of 2036 3376 file.exe 84 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 PID 3712 wrote to memory of 2164 3712 rtwbiah 93 - Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
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:3376 -
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:2036
-
-
C:\Users\Admin\AppData\Roaming\rtwbiahC:\Users\Admin\AppData\Roaming\rtwbiah1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3712 -
C:\Users\Admin\AppData\Roaming\rtwbiahC:\Users\Admin\AppData\Roaming\rtwbiah2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2164
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\rtwbiah
- Size 274KB
- SHA256 6b7bb7ed7e486cdc4e3a1d67a598aeee5a74e3c58f94e48e5fa626d6562f8688
- MD5 1206d408c9c22639d99d6ce5c920999c
- SHA1 e7aa3be99e1d1787d4bcd58a97c912b362e33c43
- SHA512 aad73c5bd46a69768c1281f2d03a4d03484cb79a6e07f3d7f26edabc5c7fcef594d4b67fb11ed28f8859827b5ec9785126bf56c2dca8e4915c3f5e1c35cac33f
- SSDEEP 6144:ITG53HXaagTpCNXzDGPD6jls1vsOMTfz:ITGtXfgTUN3YwuKz
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\rtwbiah
- Size 274KB
- SHA256 6b7bb7ed7e486cdc4e3a1d67a598aeee5a74e3c58f94e48e5fa626d6562f8688
- MD5 1206d408c9c22639d99d6ce5c920999c
- SHA1 e7aa3be99e1d1787d4bcd58a97c912b362e33c43
- SHA512 aad73c5bd46a69768c1281f2d03a4d03484cb79a6e07f3d7f26edabc5c7fcef594d4b67fb11ed28f8859827b5ec9785126bf56c2dca8e4915c3f5e1c35cac33f
- SSDEEP 6144:ITG53HXaagTpCNXzDGPD6jls1vsOMTfz:ITGtXfgTUN3YwuKz
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\rtwbiah
- Size 274KB
- SHA256 6b7bb7ed7e486cdc4e3a1d67a598aeee5a74e3c58f94e48e5fa626d6562f8688
- MD5 1206d408c9c22639d99d6ce5c920999c
- SHA1 e7aa3be99e1d1787d4bcd58a97c912b362e33c43
- SHA512 aad73c5bd46a69768c1281f2d03a4d03484cb79a6e07f3d7f26edabc5c7fcef594d4b67fb11ed28f8859827b5ec9785126bf56c2dca8e4915c3f5e1c35cac33f
- SSDEEP 6144:ITG53HXaagTpCNXzDGPD6jls1vsOMTfz:ITGtXfgTUN3YwuKz
- MD5 SHA1 SHA512 SSDEEP