Analysis
- max time kernel
150s - max time network
143s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
25/12/2022, 01:42
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
win10v2004-20220812-en
windows10-2004-x64
13 signatures
150 seconds
General
- Target file.exe
- Size 222KB
- Sample221225-b4nv7seb3x
- SHA256 cd200ef3e978d8a64016d8066bd09bedd729e2b927269a757fe6b3b66de82fbd
- MD5 1ad8265cf1a7a55c3792e39cf67e482c
- SHA1 3a9ee204c23150375acd951bfefb64f02ba4c91c
- SHA512 22182a3ef6269da66a2ca72f37c57762c22611301fc93ce489095d5e718f82449c023952f7d883fe9e3b851c161859592f3506f0f2b9fea6e45f80bfd371cc36
- SSDEEP 3072:zDuR1LrE5+iixcd/oljy3T3Apu8GiSR7LXauDgCfEQEf/ln:01Lrvii+dQljmApu8GZ77aM1ED
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 4 IoCs
resource yara_rule behavioral2/memory/1880-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1152-135-0x00000000004F0000-0x00000000004F9000-memory.dmp family_smokeloader behavioral2/memory/1880-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1880-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Drops file in System32 directory 2 IoCs
description ioc Process File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{6483BE78-492F-4408-B959-7A3E3F8CAE95}.catalogItem svchost.exe File created C:\Windows\system32\config\systemprofile\AppData\Local\Microsoft\InstallService\{CCDA5E66-2455-48B6-B60E-C34CB6896970}.catalogItem svchost.exe - Suspicious use of SetThreadContext 1 IoCs
description pid Process procid_target PID 1152 set thread context of 1880 1152 file.exe 75 - Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
description ioc Process 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 - Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString svchost.exe - Enumerates system info in registry 2 TTPs 2 IoCs
description ioc Process Key opened \REGISTRY\MACHINE\Hardware\Description\System\BIOS svchost.exe Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU svchost.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 1880 file.exe 1880 file.exe 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 3004 Process not Found - Suspicious behavior: MapViewOfSection 1 IoCs
pid Process 1880 file.exe - Suspicious use of FindShellTrayWindow 3 IoCs
pid Process 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious use of SendNotifyMessage 3 IoCs
pid Process 3004 Process not Found 3004 Process not Found 3004 Process not Found - Suspicious use of WriteProcessMemory 6 IoCs
description pid Process procid_target PID 1152 wrote to memory of 1880 1152 file.exe 75 PID 1152 wrote to memory of 1880 1152 file.exe 75 PID 1152 wrote to memory of 1880 1152 file.exe 75 PID 1152 wrote to memory of 1880 1152 file.exe 75 PID 1152 wrote to memory of 1880 1152 file.exe 75 PID 1152 wrote to memory of 1880 1152 file.exe 75
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:1152 -
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:1880
-
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k netsvcs -p1⤵
- Drops file in System32 directory
- Checks processor information in registry
- Enumerates system info in registry
PID:4708