Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
27/01/2024, 00:29
General
- Target 78cc2004a61a5f5bd968bc7449a6e41d.exe
- Size 1.5MB
- Sample240127-atdf2saggn
- SHA256 c82a55fdd3caeb95db17754e3ba270ec93a7eb3c9997f9f9c6f02de0e17bacec
Malware Config
Extracted
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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
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2020
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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 7 IoCs
Detects executables packed with ASPack v2.12-2.42
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 4 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 2 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 AdjustPrivilegeToken 2 IoCs
- Suspicious use of UnmapMainImage 1 IoCs
- Suspicious use of WriteProcessMemory 18 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
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C:\Users\Admin\AppData\Local\Temp\78cc2004a61a5f5bd968bc7449a6e41d.exe"C:\Users\Admin\AppData\Local\Temp\78cc2004a61a5f5bd968bc7449a6e41d.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"C:\Users\Admin\AppData\Local\Temp\setup_installer.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7zS432ED767\setup_install.exe"C:\Users\Admin\AppData\Local\Temp\7zS432ED767\setup_install.exe"3⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c karotima_1.exe4⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\7zS432ED767\karotima_1.exekarotima_1.exe5⤵
- Modifies Windows Defender Real-time Protection settings
- Executes dropped EXE
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-
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 4764⤵
- Program crash
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C:\Windows\SysWOW64\cmd.exeC:\Windows\system32\cmd.exe /c karotima_2.exe4⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 220 -ip 2201⤵
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C:\Users\Admin\AppData\Local\Temp\7zS432ED767\karotima_2.exekarotima_2.exe1⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 2156 -s 3962⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 2156 -ip 21561⤵
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
libcurlpp.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
setup_installer.exe
setup_installer.exe
setup_installer.exe
adctutu
memory/220-76-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-65-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-61-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-71-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-73-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/220-74-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/220-63-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-75-0x000000006EB40000-0x000000006EB63000-memory.dmp
memory/220-72-0x0000000064940000-0x0000000064959000-memory.dmp
memory/220-57-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-56-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-54-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-55-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-53-0x0000000064940000-0x0000000064959000-memory.dmp
memory/220-64-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-34-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-48-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/220-52-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/220-51-0x000000006FE40000-0x000000006FFC6000-memory.dmp
memory/220-50-0x00000000007A0000-0x000000000082F000-memory.dmp
memory/220-49-0x000000006B440000-0x000000006B4CF000-memory.dmp
memory/220-47-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/220-62-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-60-0x0000000000400000-0x000000000051E000-memory.dmp
memory/220-59-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/220-58-0x000000006B280000-0x000000006B2A6000-memory.dmp
memory/2156-77-0x00000000006C0000-0x00000000007C0000-memory.dmp
memory/2156-79-0x00000000004B0000-0x00000000004B9000-memory.dmp
memory/2156-87-0x0000000000400000-0x000000000046D000-memory.dmp
memory/2156-83-0x0000000000400000-0x000000000046D000-memory.dmp
memory/3548-84-0x0000000001F00000-0x0000000001F15000-memory.dmp