Analysis
- max time kernel
150s - max time network
131s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
06/02/2023, 08:29
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
10 signatures
150 seconds
General
- Target file.exe
- Size 305KB
- Sample230206-kdkkjacg69
- SHA256 6206cdaaacfd8a67b3311a6b4f69e6ee2e423bcab32b517647f4a594df569d3b
- MD5 5d82d6c7b40ed7c19260ea7ade303f20
- SHA1 de0edd14c7771ccb6be82994ea66e4fb6f617f65
- SHA512 d2c3858c86b57eec643aeca7ca2edbb740e4afb77710b28399eb8efde86fd1ade586fea44a23c9ea1cb7177f93654e83ba43d69d15ef1642d92ee825c13bd40c
- SSDEEP 3072:BNFbtJPL0+gF/RqcMRQq04Rg0oDpxG+UYOvwcQTUNP9sxA76ov3uo/MRUT:XBPLr68c8oPDjRMwcQT2Puk6om
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4856-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4944-135-0x0000000000600000-0x0000000000609000-memory.dmp family_smokeloader behavioral2/memory/4856-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4856-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2944-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/2944-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1836 shcrbsd 2944 shcrbsd - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4944 set thread context of 4856 4944 file.exe 82 PID 1836 set thread context of 2944 1836 shcrbsd 91 - 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 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 shcrbsd Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI shcrbsd Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI shcrbsd - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4856 file.exe 4856 file.exe 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found 1084 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 1084 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4856 file.exe 2944 shcrbsd - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 1084 Process not Found Token: SeCreatePagefilePrivilege 1084 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 4944 wrote to memory of 4856 4944 file.exe 82 PID 1836 wrote to memory of 2944 1836 shcrbsd 91 PID 1836 wrote to memory of 2944 1836 shcrbsd 91 PID 1836 wrote to memory of 2944 1836 shcrbsd 91 PID 1836 wrote to memory of 2944 1836 shcrbsd 91 PID 1836 wrote to memory of 2944 1836 shcrbsd 91 PID 1836 wrote to memory of 2944 1836 shcrbsd 91
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:4944 -
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:4856
-
-
C:\Users\Admin\AppData\Roaming\shcrbsdC:\Users\Admin\AppData\Roaming\shcrbsd1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1836 -
C:\Users\Admin\AppData\Roaming\shcrbsdC:\Users\Admin\AppData\Roaming\shcrbsd2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:2944
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\shcrbsd
- Size 305KB
- SHA256 6206cdaaacfd8a67b3311a6b4f69e6ee2e423bcab32b517647f4a594df569d3b
- MD5 5d82d6c7b40ed7c19260ea7ade303f20
- SHA1 de0edd14c7771ccb6be82994ea66e4fb6f617f65
- SHA512 d2c3858c86b57eec643aeca7ca2edbb740e4afb77710b28399eb8efde86fd1ade586fea44a23c9ea1cb7177f93654e83ba43d69d15ef1642d92ee825c13bd40c
- SSDEEP 3072:BNFbtJPL0+gF/RqcMRQq04Rg0oDpxG+UYOvwcQTUNP9sxA76ov3uo/MRUT:XBPLr68c8oPDjRMwcQT2Puk6om
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\shcrbsd
- Size 305KB
- SHA256 6206cdaaacfd8a67b3311a6b4f69e6ee2e423bcab32b517647f4a594df569d3b
- MD5 5d82d6c7b40ed7c19260ea7ade303f20
- SHA1 de0edd14c7771ccb6be82994ea66e4fb6f617f65
- SHA512 d2c3858c86b57eec643aeca7ca2edbb740e4afb77710b28399eb8efde86fd1ade586fea44a23c9ea1cb7177f93654e83ba43d69d15ef1642d92ee825c13bd40c
- SSDEEP 3072:BNFbtJPL0+gF/RqcMRQq04Rg0oDpxG+UYOvwcQTUNP9sxA76ov3uo/MRUT:XBPLr68c8oPDjRMwcQT2Puk6om
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\shcrbsd
- Size 305KB
- SHA256 6206cdaaacfd8a67b3311a6b4f69e6ee2e423bcab32b517647f4a594df569d3b
- MD5 5d82d6c7b40ed7c19260ea7ade303f20
- SHA1 de0edd14c7771ccb6be82994ea66e4fb6f617f65
- SHA512 d2c3858c86b57eec643aeca7ca2edbb740e4afb77710b28399eb8efde86fd1ade586fea44a23c9ea1cb7177f93654e83ba43d69d15ef1642d92ee825c13bd40c
- SSDEEP 3072:BNFbtJPL0+gF/RqcMRQq04Rg0oDpxG+UYOvwcQTUNP9sxA76ov3uo/MRUT:XBPLr68c8oPDjRMwcQT2Puk6om
- MD5 SHA1 SHA512 SSDEEP