Analysis
- max time kernel
150s - max time network
144s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
30/01/2023, 19:48
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220901-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 169KB
- Sample230130-yh4e4aea3t
- SHA256 f01ff021ad52f49c62e47d3e89bb71b46af8e916b449b2c04d94f4394f4ef22e
- MD5 5a0e08279c56666c2d21ea0658a28827
- SHA1 12b5c3d49186fbc82c0b414bdfe5cebee100f3b2
- SHA512 86982152a98e81b899096d7f4c248179d1bb0daf4dfd394fe8de83d45af88dc0fd6b51dae49603d58cb057ae1e8c3b8ab3646577b791aece94bbc7105137f969
- SSDEEP 3072:8pjZh6LTAszX5ocLIJu484M8Ue+qoo5gzse16:Q8L0szT8JVzM8Ue+qo4gzs7
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/1260-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4600-135-0x0000000002DF0000-0x0000000002DF9000-memory.dmp family_smokeloader behavioral2/memory/1260-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1260-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3424-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/3424-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4676 fifbsef 3424 fifbsef - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4600 set thread context of 1260 4600 file.exe 79 PID 4676 set thread context of 3424 4676 fifbsef 88 - Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fifbsef Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fifbsef Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI fifbsef 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 - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1260 file.exe 1260 file.exe 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found 772 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 772 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1260 file.exe 3424 fifbsef - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 772 Process not Found Token: SeCreatePagefilePrivilege 772 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4600 wrote to memory of 1260 4600 file.exe 79 PID 4676 wrote to memory of 3424 4676 fifbsef 88 PID 4676 wrote to memory of 3424 4676 fifbsef 88 PID 4676 wrote to memory of 3424 4676 fifbsef 88 PID 4676 wrote to memory of 3424 4676 fifbsef 88 PID 4676 wrote to memory of 3424 4676 fifbsef 88 PID 4676 wrote to memory of 3424 4676 fifbsef 88
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:4600 -
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:1260
-
-
C:\Users\Admin\AppData\Roaming\fifbsefC:\Users\Admin\AppData\Roaming\fifbsef1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4676 -
C:\Users\Admin\AppData\Roaming\fifbsefC:\Users\Admin\AppData\Roaming\fifbsef2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:3424
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\fifbsef
- Size 169KB
- SHA256 f01ff021ad52f49c62e47d3e89bb71b46af8e916b449b2c04d94f4394f4ef22e
- MD5 5a0e08279c56666c2d21ea0658a28827
- SHA1 12b5c3d49186fbc82c0b414bdfe5cebee100f3b2
- SHA512 86982152a98e81b899096d7f4c248179d1bb0daf4dfd394fe8de83d45af88dc0fd6b51dae49603d58cb057ae1e8c3b8ab3646577b791aece94bbc7105137f969
- SSDEEP 3072:8pjZh6LTAszX5ocLIJu484M8Ue+qoo5gzse16:Q8L0szT8JVzM8Ue+qo4gzs7
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fifbsef
- Size 169KB
- SHA256 f01ff021ad52f49c62e47d3e89bb71b46af8e916b449b2c04d94f4394f4ef22e
- MD5 5a0e08279c56666c2d21ea0658a28827
- SHA1 12b5c3d49186fbc82c0b414bdfe5cebee100f3b2
- SHA512 86982152a98e81b899096d7f4c248179d1bb0daf4dfd394fe8de83d45af88dc0fd6b51dae49603d58cb057ae1e8c3b8ab3646577b791aece94bbc7105137f969
- SSDEEP 3072:8pjZh6LTAszX5ocLIJu484M8Ue+qoo5gzse16:Q8L0szT8JVzM8Ue+qo4gzs7
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\fifbsef
- Size 169KB
- SHA256 f01ff021ad52f49c62e47d3e89bb71b46af8e916b449b2c04d94f4394f4ef22e
- MD5 5a0e08279c56666c2d21ea0658a28827
- SHA1 12b5c3d49186fbc82c0b414bdfe5cebee100f3b2
- SHA512 86982152a98e81b899096d7f4c248179d1bb0daf4dfd394fe8de83d45af88dc0fd6b51dae49603d58cb057ae1e8c3b8ab3646577b791aece94bbc7105137f969
- SSDEEP 3072:8pjZh6LTAszX5ocLIJu484M8Ue+qoo5gzse16:Q8L0szT8JVzM8Ue+qo4gzs7
- MD5 SHA1 SHA512 SSDEEP