Analysis
- max time kernel
151s - max time network
155s - platform
windows10-2004_x64 - resource
win10v2004-20230831-en - resource tags
- submitted
13/09/2023, 23:41
General
- Target f34f66fe4a437f08e62ea15c1e3b64a2.exe
- Size 300KB
- Sample230913-3pegrsff6s
- SHA256 b20e910bf0d9ee01fb367d6804425b1c8ef31173229efbd013e97469f9354b30
Malware Config
Extracted
-
smokeloader
-
pub1
Extracted
-
smokeloader
-
2020
-
http://host-file-host6.com/
-
http://host-host-file8.com/
Signatures
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Suspicious use of SetThreadContext 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Modifies registry class 3 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of AdjustPrivilegeToken 3 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
- Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\f34f66fe4a437f08e62ea15c1e3b64a2.exe"C:\Users\Admin\AppData\Local\Temp\f34f66fe4a437f08e62ea15c1e3b64a2.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\f34f66fe4a437f08e62ea15c1e3b64a2.exe"C:\Users\Admin\AppData\Local\Temp\f34f66fe4a437f08e62ea15c1e3b64a2.exe"2⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
-
-
C:\Windows\system32\rundll32.exe"C:\Windows\system32\rundll32.exe" "C:\Windows\SYSTEM32\EDGEHTML.dll",#141 Microsoft.VCLibs.140.00_8wekyb3d8bbwe1⤵
-
C:\Windows\System32\svchost.exeC:\Windows\System32\svchost.exe -k UnistackSvcGroup1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
store.jfm
memory/232-1-0x0000000002460000-0x0000000002560000-memory.dmp
memory/232-2-0x0000000002410000-0x0000000002419000-memory.dmp
memory/2104-51-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-53-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-81-0x0000026C12400000-0x0000026C12401000-memory.dmp
memory/2104-13-0x0000026C09E70000-0x0000026C09E80000-memory.dmp
memory/2104-29-0x0000026C09F70000-0x0000026C09F80000-memory.dmp
memory/2104-45-0x0000026C12560000-0x0000026C12561000-memory.dmp
memory/2104-46-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-47-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-48-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-49-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-50-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-80-0x0000026C122F0000-0x0000026C122F1000-memory.dmp
memory/2104-52-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-79-0x0000026C122F0000-0x0000026C122F1000-memory.dmp
memory/2104-54-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-55-0x0000026C12590000-0x0000026C12591000-memory.dmp
memory/2104-56-0x0000026C121B0000-0x0000026C121B1000-memory.dmp
memory/2104-57-0x0000026C121A0000-0x0000026C121A1000-memory.dmp
memory/2104-59-0x0000026C121B0000-0x0000026C121B1000-memory.dmp
memory/2104-62-0x0000026C121A0000-0x0000026C121A1000-memory.dmp
memory/2104-65-0x0000026C120E0000-0x0000026C120E1000-memory.dmp
memory/2104-77-0x0000026C122E0000-0x0000026C122E1000-memory.dmp
memory/3088-3-0x0000000000400000-0x0000000000409000-memory.dmp
memory/3088-4-0x0000000000400000-0x0000000000409000-memory.dmp
memory/3088-6-0x0000000000400000-0x0000000000409000-memory.dmp
memory/3244-5-0x0000000002890000-0x00000000028A6000-memory.dmp