Analysis
- max time kernel
150s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
27/01/2024, 00:29
General
- Target setup_installer.exe
- Size 1.5MB
- Sample240127-atdf2saggn
- SHA256 f93e49425c33932d4adda4e5ff0818a0970280a22883824d806e4cf4f511a82f
Malware Config
Extracted
-
nullmixer
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http://marisana.xyz/
Extracted
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smokeloader
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pub6
Extracted
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smokeloader
-
2020
-
http://conceitosseg.com/upload/
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http://integrasidata.com/upload/
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http://ozentekstil.com/upload/
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http://finbelportal.com/upload/
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http://telanganadigital.com/upload/
Signatures
- Modifies Windows Defender Real-time Protection settings 3 TTPs 7 IoCs
- NullMixer
NullMixer is a malware dropper leading to an infection chain of a wide variety of malware families.
- PrivateLoader
PrivateLoader is a downloader sold as a pay-per-install malware distribution service.
- RisePro
RisePro stealer is an infostealer distributed by PrivateLoader.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- ASPack v2.12-2.42 8 IoCs
Detects executables packed with ASPack v2.12-2.42
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 7 IoCs
- Looks up external IP address via web service 2 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Program crash 1 IoCs
- Checks SCSI registry key(s) 3 TTPs 3 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: MapViewOfSection 1 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 15 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\setup_installer.exe"C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7zS8C3349B7\setup_install.exe"C:\Users\Admin\AppData\Local\Temp\7zS8C3349B7\setup_install.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
-
C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c karotima_2.exe3⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7zS8C3349B7\karotima_2.exekarotima_2.exe4⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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-
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c karotima_1.exe3⤵
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\7zS8C3349B7\karotima_1.exekarotima_1.exe4⤵
- Modifies Windows Defender Real-time Protection settings
- Executes dropped EXE
-
-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 1220 -s 5043⤵
- Program crash
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1220 -ip 12201⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
karotima_1.exe
karotima_1.txt
karotima_2.exe
karotima_2.txt
libcurl.dll
libcurl.dll
libcurlpp.dll
libgcc_s_dw2-1.dll
libgcc_s_dw2-1.dll
libstdc++-6.dll
libstdc++-6.dll
libwinpthread-1.dll
setup_install.exe
setup_install.exe
setup_install.exe
CC4F.tmp
vdcasjs
memory/432-75-0x0000000000400000-0x000000000046D000-memory.dmp
memory/432-67-0x0000000002070000-0x0000000002079000-memory.dmp
memory/432-66-0x00000000004B0000-0x00000000005B0000-memory.dmp
memory/432-69-0x0000000000400000-0x000000000046D000-memory.dmp
memory/1220-38-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/1220-44-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-49-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-50-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-53-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-52-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-51-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-47-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/1220-30-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/1220-48-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/1220-46-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-45-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-41-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/1220-54-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-43-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-60-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-61-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/1220-64-0x000000006EB40000-0x000000006EB63000-memory.dmp
memory/1220-65-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-63-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/1220-62-0x0000000064940000-0x0000000064959000-memory.dmp
memory/1220-42-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/1220-40-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/1220-39-0x0000000064940000-0x0000000064959000-memory.dmp
memory/1220-37-0x0000000064940000-0x0000000064959000-memory.dmp
memory/1220-22-0x0000000000400000-0x000000000051E000-memory.dmp
memory/1220-35-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/3592-73-0x0000000002880000-0x0000000002895000-memory.dmp