Analysis
- max time kernel
150s - max time network
146s - 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, 02:39
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 283KB
- Sample230206-c5aweafb8x
- SHA256 69ddf2411c1926ee15b164c1d02ce6de16a1735a15d927f12e5e050a2e2a5a8a
- MD5 a7131fd0aaec3f0b0b9d0ae6d14fc15d
- SHA1 f2fa59f955ae245d48441da6e61101b5cd0eb851
- SHA512 362c3aefbc816eb00c3e9f0731831edf906e93690e5d0ad9439e394bda33cc69855b821e821af82e5cca9b1f65cc95691dc800cd55bb459e95deb708b05a2917
- SSDEEP 3072:aWaKO3hu/jYt2QXXAowLTckFWY23+b5aWmuKahfAA/YDbVbQDBmBOlwuKKo+5Jiq:raKmKQncLTfFRW/atAAIbQDgol5KEJb
- MD5 SHA1 SHA512 SSDEEP
Score
10/10
Malware Config
Signatures
- Detects Smokeloader packer 6 IoCs
resource yara_rule behavioral2/memory/4828-133-0x0000000002200000-0x0000000002209000-memory.dmp family_smokeloader behavioral2/memory/1172-135-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1172-137-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/1172-138-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4268-145-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader behavioral2/memory/4268-146-0x0000000000400000-0x0000000000409000-memory.dmp family_smokeloader - SmokeLoader
Modular backdoor trojan in use since 2014.
- Executes dropped EXE 2 IoCs
pid Process 3788 wurbgvd 4268 wurbgvd - Suspicious use of SetThreadContext 2 IoCs
description pid Process procid_target PID 4828 set thread context of 1172 4828 file.exe 81 PID 3788 set thread context of 4268 3788 wurbgvd 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 wurbgvd Key queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wurbgvd Key enumerated \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI wurbgvd 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 1172 file.exe 1172 file.exe 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found 2976 Process not Found - Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 2976 Process not Found - Suspicious behavior: MapViewOfSection 2 IoCs
pid Process 1172 file.exe 4268 wurbgvd - Suspicious use of AdjustPrivilegeToken 2 IoCs
description pid Process Token: SeShutdownPrivilege 2976 Process not Found Token: SeCreatePagefilePrivilege 2976 Process not Found - Suspicious use of WriteProcessMemory 12 IoCs
description pid Process procid_target PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 4828 wrote to memory of 1172 4828 file.exe 81 PID 3788 wrote to memory of 4268 3788 wurbgvd 90 PID 3788 wrote to memory of 4268 3788 wurbgvd 90 PID 3788 wrote to memory of 4268 3788 wurbgvd 90 PID 3788 wrote to memory of 4268 3788 wurbgvd 90 PID 3788 wrote to memory of 4268 3788 wurbgvd 90 PID 3788 wrote to memory of 4268 3788 wurbgvd 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:4828 -
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:1172
-
-
C:\Users\Admin\AppData\Roaming\wurbgvdC:\Users\Admin\AppData\Roaming\wurbgvd1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3788 -
C:\Users\Admin\AppData\Roaming\wurbgvdC:\Users\Admin\AppData\Roaming\wurbgvd2⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
PID:4268
-
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
- Path C:\Users\Admin\AppData\Roaming\wurbgvd
- Size 283KB
- SHA256 69ddf2411c1926ee15b164c1d02ce6de16a1735a15d927f12e5e050a2e2a5a8a
- MD5 a7131fd0aaec3f0b0b9d0ae6d14fc15d
- SHA1 f2fa59f955ae245d48441da6e61101b5cd0eb851
- SHA512 362c3aefbc816eb00c3e9f0731831edf906e93690e5d0ad9439e394bda33cc69855b821e821af82e5cca9b1f65cc95691dc800cd55bb459e95deb708b05a2917
- SSDEEP 3072:aWaKO3hu/jYt2QXXAowLTckFWY23+b5aWmuKahfAA/YDbVbQDBmBOlwuKKo+5Jiq:raKmKQncLTfFRW/atAAIbQDgol5KEJb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wurbgvd
- Size 283KB
- SHA256 69ddf2411c1926ee15b164c1d02ce6de16a1735a15d927f12e5e050a2e2a5a8a
- MD5 a7131fd0aaec3f0b0b9d0ae6d14fc15d
- SHA1 f2fa59f955ae245d48441da6e61101b5cd0eb851
- SHA512 362c3aefbc816eb00c3e9f0731831edf906e93690e5d0ad9439e394bda33cc69855b821e821af82e5cca9b1f65cc95691dc800cd55bb459e95deb708b05a2917
- SSDEEP 3072:aWaKO3hu/jYt2QXXAowLTckFWY23+b5aWmuKahfAA/YDbVbQDBmBOlwuKKo+5Jiq:raKmKQncLTfFRW/atAAIbQDgol5KEJb
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\wurbgvd
- Size 283KB
- SHA256 69ddf2411c1926ee15b164c1d02ce6de16a1735a15d927f12e5e050a2e2a5a8a
- MD5 a7131fd0aaec3f0b0b9d0ae6d14fc15d
- SHA1 f2fa59f955ae245d48441da6e61101b5cd0eb851
- SHA512 362c3aefbc816eb00c3e9f0731831edf906e93690e5d0ad9439e394bda33cc69855b821e821af82e5cca9b1f65cc95691dc800cd55bb459e95deb708b05a2917
- SSDEEP 3072:aWaKO3hu/jYt2QXXAowLTckFWY23+b5aWmuKahfAA/YDbVbQDBmBOlwuKKo+5Jiq:raKmKQncLTfFRW/atAAIbQDgol5KEJb
- MD5 SHA1 SHA512 SSDEEP