Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
13-08-2024 12:04
Static task
static1
Behavioral task
behavioral1
Sample
Facturas_pdf.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
Facturas_pdf.exe
Resource
win10v2004-20240802-en
General
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Target
Facturas_pdf.exe
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Size
910KB
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MD5
129ab29e55efb205471261bc48380372
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SHA1
75670ebbf86906138538caad68b5a75f17097be3
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SHA256
322c8e0ba72b41a9ee9ebdeeb1b1d71cefd9ed9674e285efed105c0918834b24
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SHA512
8020ed1d32fce5d9931da0e52b501c985de294c323a3d70a1f3873642f1a323f79479d555ddb5c2991d68c4300cbb95607e7582f42213080798a8d9de78a70e9
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SSDEEP
24576:qzKGObd+rcjuV/B1mV4uhB4tqyJy70oRXr85ABIxWD:qzKGOorcc8Q5k70o5g58Ixc
Malware Config
Extracted
remcos
RemoteHost
192.3.243.155:7643
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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
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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-C9YEJ8
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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
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take_screenshot_time
5
Signatures
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Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepid Process 3436 powershell.exe 4184 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
Facturas_pdf.exedescription ioc Process Key value queried \REGISTRY\USER\S-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation Facturas_pdf.exe -
Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 1 IoCs
Processes:
Facturas_pdf.exedescription pid Process procid_target PID 2340 set thread context of 212 2340 Facturas_pdf.exe 101 -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 5 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
schtasks.exevbc.exeFacturas_pdf.exepowershell.exepowershell.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language schtasks.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language Facturas_pdf.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language powershell.exe -
Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 4 IoCs
Processes:
powershell.exepowershell.exepid Process 4184 powershell.exe 3436 powershell.exe 4184 powershell.exe 3436 powershell.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
powershell.exepowershell.exedescription pid Process Token: SeDebugPrivilege 4184 powershell.exe Token: SeDebugPrivilege 3436 powershell.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
vbc.exepid Process 212 vbc.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
Facturas_pdf.exedescription pid Process procid_target PID 2340 wrote to memory of 3436 2340 Facturas_pdf.exe 95 PID 2340 wrote to memory of 3436 2340 Facturas_pdf.exe 95 PID 2340 wrote to memory of 3436 2340 Facturas_pdf.exe 95 PID 2340 wrote to memory of 4184 2340 Facturas_pdf.exe 97 PID 2340 wrote to memory of 4184 2340 Facturas_pdf.exe 97 PID 2340 wrote to memory of 4184 2340 Facturas_pdf.exe 97 PID 2340 wrote to memory of 1076 2340 Facturas_pdf.exe 99 PID 2340 wrote to memory of 1076 2340 Facturas_pdf.exe 99 PID 2340 wrote to memory of 1076 2340 Facturas_pdf.exe 99 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101 PID 2340 wrote to memory of 212 2340 Facturas_pdf.exe 101
Processes
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C:\Users\Admin\AppData\Local\Temp\Facturas_pdf.exe"C:\Users\Admin\AppData\Local\Temp\Facturas_pdf.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2340 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\Facturas_pdf.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3436
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\kkUfsLDbd.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4184
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\kkUfsLDbd" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB49A.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:1076
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
PID:212
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
144B
MD52e4fa6e8883484ec864af0f02bf698bf
SHA18fca08e1a778f3063b6456c89e73ab903f49ab47
SHA2566701e49fe7e687db4e9fabb6ec1603908872e27f9107d94743ac226e5a2ef6d0
SHA512cc5174f7d27baaff45d02610298f48f1f8a5f6e174476e28c9387ffa3cecc56d47ced11190814fe00c7a762641ca684c6da82eaa5288e56778cdb6fdfea8e44b
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
1KB
MD52a9c0b15b25ea666bc995d14a2d0d8f6
SHA1f44a7c92f75edc17a38432a716ff455b35491895
SHA256ba4d317467ec8967ed2479fa04ce8755923690705467b1441f0997f82739becd
SHA512fb7f3bb03973b7679a25f8a2719ec0935a9d14332dee6fee143a4c78d88640855d6e35a5777a720afc76545507443983acfa5c04bcc80d941ca8e761def1ae09