Analysis
- max time kernel
150s - max time network
140s - platform
windows10-2004_x64 - resource
win10v2004-20221111-en - resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system - submitted
20/12/2022, 10:19
Static task
static1
Behavioral task
behavioral1
Sample
file.exe
Resource
win7-20220812-en
windows7-x64
7 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 218KB
- Sample221220-mch2escd51
- SHA256 a33c3618f8d60691a4e53503b3e8f50c2232d793bc8d3bf99cd635b56adab70c
- MD5 5ad49eaba52503675fb38b2c536da989
- SHA1 0685620879dc35540d9bf40cc1725ad1897787f7
- SHA512 96ddaf996819a6e7b01213961d8e4baa5bb0630ad953eeb8f20706bcc42347ef441b18bd6fcee6f3c0ab24c129c537a7996b3fd6697522deed1c6ad8c23f3cce
- SSDEEP 3072:kzJz2keELagU9RjfTAEISN8rdOlDnIZ7F2MB7b/iY8uW5F9rvYNHCDml:kRdlLB2MbS+mTIZ7FJZH8zf9LSCa
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4280-133-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1952-135-0x00000000004D0000-0x00000000004D9000-memory.dmp family_smokeloader behavioral2/memory/4280-136-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4280-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4116-144-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4116-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 1840 vjbdcuu 4116 vjbdcuu - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 1952 set thread context of 4280 1952 file.exe 81 PID 1840 set thread context of 4116 1840 vjbdcuu 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 vjbdcuu 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 vjbdcuu Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI vjbdcuu - Suspicious behavior: EnumeratesProcesses 64 IoCs
pid Process 4280 file.exe 4280 file.exe 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found 2532 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2532 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 4280 file.exe 4116 vjbdcuu - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2532 Process not Found Token: SeCreatePagefilePrivilege 2532 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1952 wrote to memory of 4280 1952 file.exe 81 PID 1840 wrote to memory of 4116 1840 vjbdcuu 90 PID 1840 wrote to memory of 4116 1840 vjbdcuu 90 PID 1840 wrote to memory of 4116 1840 vjbdcuu 90 PID 1840 wrote to memory of 4116 1840 vjbdcuu 90 PID 1840 wrote to memory of 4116 1840 vjbdcuu 90 PID 1840 wrote to memory of 4116 1840 vjbdcuu 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:1952 -
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:4280
-
-
C:\Users\Admin\AppData\Roaming\vjbdcuuC:\Users\Admin\AppData\Roaming\vjbdcuu1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1840 -
C:\Users\Admin\AppData\Roaming\vjbdcuuC:\Users\Admin\AppData\Roaming\vjbdcuu2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4116
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\vjbdcuu
- Size 218KB
- SHA256 a33c3618f8d60691a4e53503b3e8f50c2232d793bc8d3bf99cd635b56adab70c
- MD5 5ad49eaba52503675fb38b2c536da989
- SHA1 0685620879dc35540d9bf40cc1725ad1897787f7
- SHA512 96ddaf996819a6e7b01213961d8e4baa5bb0630ad953eeb8f20706bcc42347ef441b18bd6fcee6f3c0ab24c129c537a7996b3fd6697522deed1c6ad8c23f3cce
- SSDEEP 3072:kzJz2keELagU9RjfTAEISN8rdOlDnIZ7F2MB7b/iY8uW5F9rvYNHCDml:kRdlLB2MbS+mTIZ7FJZH8zf9LSCa
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\vjbdcuu
- Size 218KB
- SHA256 a33c3618f8d60691a4e53503b3e8f50c2232d793bc8d3bf99cd635b56adab70c
- MD5 5ad49eaba52503675fb38b2c536da989
- SHA1 0685620879dc35540d9bf40cc1725ad1897787f7
- SHA512 96ddaf996819a6e7b01213961d8e4baa5bb0630ad953eeb8f20706bcc42347ef441b18bd6fcee6f3c0ab24c129c537a7996b3fd6697522deed1c6ad8c23f3cce
- SSDEEP 3072:kzJz2keELagU9RjfTAEISN8rdOlDnIZ7F2MB7b/iY8uW5F9rvYNHCDml:kRdlLB2MbS+mTIZ7FJZH8zf9LSCa
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\vjbdcuu
- Size 218KB
- SHA256 a33c3618f8d60691a4e53503b3e8f50c2232d793bc8d3bf99cd635b56adab70c
- MD5 5ad49eaba52503675fb38b2c536da989
- SHA1 0685620879dc35540d9bf40cc1725ad1897787f7
- SHA512 96ddaf996819a6e7b01213961d8e4baa5bb0630ad953eeb8f20706bcc42347ef441b18bd6fcee6f3c0ab24c129c537a7996b3fd6697522deed1c6ad8c23f3cce
- SSDEEP 3072:kzJz2keELagU9RjfTAEISN8rdOlDnIZ7F2MB7b/iY8uW5F9rvYNHCDml:kRdlLB2MbS+mTIZ7FJZH8zf9LSCa
- MD5 SHA1 SHA512 SSDEEP