Analysis
- max time kernel
150s - max time network
128s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system - submitted
28/12/2022, 13:59
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 230KB
- Sample221228-rad2xadf2w
- SHA256 5acaa02a304b39cef1b7725d70f07c5d0c0759bc810bbe423ddd00f39f64702c
- MD5 6defe8e4c2b7693ed39419a575a7d42f
- SHA1 1d4e35b0b97038c011bee7b9d0045a8f06775168
- SHA512 f08b714947f9b3ab5ba7695df1ae7915990cc539c9678b2cf023d509e040e6ae721f0f68549fa7b3fc29d5ce9eaf389a5ba971ca35b2908d3e4ed90b0ee1c587
- SSDEEP 3072:c0bLbvx5U1PPMIj74qZGq/c/BgdxfXz3wD3tdmdhEH:tLj2MIj0Qc/qx/ji3tm
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4448-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/5004-135-0x00000000005F0000-0x00000000005F9000-memory.dmp family_smokeloader behavioral2/memory/4448-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4448-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1140-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1140-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 4992 iuvatss 1140 iuvatss - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 5004 set thread context of 4448 5004 file.exe 81 PID 4992 set thread context of 1140 4992 iuvatss 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 file.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI iuvatss Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI iuvatss Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI iuvatss Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI file.exe - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4448 file.exe 4448 file.exe 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found 512 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 512 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4448 file.exe 1140 iuvatss - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 512 Process not Found Token: SeCreatePagefilePrivilege 512 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 5004 wrote to memory of 4448 5004 file.exe 81 PID 4992 wrote to memory of 1140 4992 iuvatss 90 PID 4992 wrote to memory of 1140 4992 iuvatss 90 PID 4992 wrote to memory of 1140 4992 iuvatss 90 PID 4992 wrote to memory of 1140 4992 iuvatss 90 PID 4992 wrote to memory of 1140 4992 iuvatss 90 PID 4992 wrote to memory of 1140 4992 iuvatss 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:5004 -
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:4448
-
-
C:\Users\Admin\AppData\Roaming\iuvatssC:\Users\Admin\AppData\Roaming\iuvatss1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4992 -
C:\Users\Admin\AppData\Roaming\iuvatssC:\Users\Admin\AppData\Roaming\iuvatss2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:1140
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\iuvatss
- Size 230KB
- SHA256 5acaa02a304b39cef1b7725d70f07c5d0c0759bc810bbe423ddd00f39f64702c
- MD5 6defe8e4c2b7693ed39419a575a7d42f
- SHA1 1d4e35b0b97038c011bee7b9d0045a8f06775168
- SHA512 f08b714947f9b3ab5ba7695df1ae7915990cc539c9678b2cf023d509e040e6ae721f0f68549fa7b3fc29d5ce9eaf389a5ba971ca35b2908d3e4ed90b0ee1c587
- SSDEEP 3072:c0bLbvx5U1PPMIj74qZGq/c/BgdxfXz3wD3tdmdhEH:tLj2MIj0Qc/qx/ji3tm
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\iuvatss
- Size 230KB
- SHA256 5acaa02a304b39cef1b7725d70f07c5d0c0759bc810bbe423ddd00f39f64702c
- MD5 6defe8e4c2b7693ed39419a575a7d42f
- SHA1 1d4e35b0b97038c011bee7b9d0045a8f06775168
- SHA512 f08b714947f9b3ab5ba7695df1ae7915990cc539c9678b2cf023d509e040e6ae721f0f68549fa7b3fc29d5ce9eaf389a5ba971ca35b2908d3e4ed90b0ee1c587
- SSDEEP 3072:c0bLbvx5U1PPMIj74qZGq/c/BgdxfXz3wD3tdmdhEH:tLj2MIj0Qc/qx/ji3tm
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\iuvatss
- Size 230KB
- SHA256 5acaa02a304b39cef1b7725d70f07c5d0c0759bc810bbe423ddd00f39f64702c
- MD5 6defe8e4c2b7693ed39419a575a7d42f
- SHA1 1d4e35b0b97038c011bee7b9d0045a8f06775168
- SHA512 f08b714947f9b3ab5ba7695df1ae7915990cc539c9678b2cf023d509e040e6ae721f0f68549fa7b3fc29d5ce9eaf389a5ba971ca35b2908d3e4ed90b0ee1c587
- SSDEEP 3072:c0bLbvx5U1PPMIj74qZGq/c/BgdxfXz3wD3tdmdhEH:tLj2MIj0Qc/qx/ji3tm
- MD5 SHA1 SHA512 SSDEEP