Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
23-05-2024 09:01
Static task
static1
Behavioral task
behavioral1
Sample
#Inv_PI_{number_12}_pdf.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
#Inv_PI_{number_12}_pdf.exe
Resource
win10v2004-20240508-en
General
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Target
#Inv_PI_{number_12}_pdf.exe
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Size
1.1MB
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MD5
96a62642b79fcb88da4f854b2c46c64c
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SHA1
1778d5bad1acb999458092745af2a6ac3fce39a3
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SHA256
472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
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SHA512
4643ede4706e904a6b6efd4c59d29c5a58c3aa3614de1d4d17e02d8ad33c4ecfd2bfe61de335e726c8ec085717afef77e9146eab4f71fd8a25758a2f3612d457
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SSDEEP
24576:+8lmSlcXrLArMThOTAiVOpoUJ3jEDFXF9bo:9mSubfQrVS1xjcFDo
Malware Config
Extracted
remcos
RemoteHost
45.95.169.137:2404
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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
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hide_file
false
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hide_keylog_file
false
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install_flag
true
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install_path
%AppData%
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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-NG20QI
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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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NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
Processes:
resource yara_rule behavioral1/memory/536-92-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
Processes:
resource yara_rule behavioral1/memory/2068-90-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView -
Nirsoft 3 IoCs
Processes:
resource yara_rule behavioral1/memory/684-93-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral1/memory/536-92-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral1/memory/2068-90-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft -
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 2616 powershell.exe 1944 powershell.exe -
Executes dropped EXE 5 IoCs
Processes:
remcos.exeremcos.exeremcos.exeremcos.exeremcos.exepid process 2484 remcos.exe 1564 remcos.exe 2068 remcos.exe 684 remcos.exe 536 remcos.exe -
Loads dropped DLL 1 IoCs
Processes:
#Inv_PI_{number_12}_pdf.exepid process 2892 #Inv_PI_{number_12}_pdf.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
Processes:
remcos.exedescription ioc process Key opened \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts remcos.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
remcos.exe#Inv_PI_{number_12}_pdf.exedescription ioc process Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NG20QI = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" remcos.exe Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NG20QI = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" #Inv_PI_{number_12}_pdf.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-NG20QI = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" #Inv_PI_{number_12}_pdf.exe Set value (str) \REGISTRY\USER\S-1-5-21-3627615824-4061627003-3019543961-1000\Software\Microsoft\Windows\CurrentVersion\Run\Rmc-NG20QI = "\"C:\\Users\\Admin\\AppData\\Roaming\\Remcos\\remcos.exe\"" remcos.exe -
Suspicious use of SetThreadContext 5 IoCs
Processes:
#Inv_PI_{number_12}_pdf.exeremcos.exeremcos.exedescription pid process target process PID 2220 set thread context of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2484 set thread context of 1564 2484 remcos.exe remcos.exe PID 1564 set thread context of 2068 1564 remcos.exe remcos.exe PID 1564 set thread context of 536 1564 remcos.exe remcos.exe PID 1564 set thread context of 684 1564 remcos.exe remcos.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
Processes:
schtasks.exeschtasks.exepid process 2684 schtasks.exe 808 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 8 IoCs
Processes:
#Inv_PI_{number_12}_pdf.exepowershell.exeremcos.exepowershell.exeremcos.exepid process 2220 #Inv_PI_{number_12}_pdf.exe 2220 #Inv_PI_{number_12}_pdf.exe 2616 powershell.exe 2484 remcos.exe 1944 powershell.exe 2484 remcos.exe 2068 remcos.exe 2068 remcos.exe -
Suspicious behavior: MapViewOfSection 3 IoCs
Processes:
remcos.exepid process 1564 remcos.exe 1564 remcos.exe 1564 remcos.exe -
Suspicious use of AdjustPrivilegeToken 5 IoCs
Processes:
#Inv_PI_{number_12}_pdf.exepowershell.exeremcos.exepowershell.exeremcos.exedescription pid process Token: SeDebugPrivilege 2220 #Inv_PI_{number_12}_pdf.exe Token: SeDebugPrivilege 2616 powershell.exe Token: SeDebugPrivilege 2484 remcos.exe Token: SeDebugPrivilege 1944 powershell.exe Token: SeDebugPrivilege 684 remcos.exe -
Suspicious use of WriteProcessMemory 61 IoCs
Processes:
#Inv_PI_{number_12}_pdf.exe#Inv_PI_{number_12}_pdf.exeremcos.exeremcos.exedescription pid process target process PID 2220 wrote to memory of 2616 2220 #Inv_PI_{number_12}_pdf.exe powershell.exe PID 2220 wrote to memory of 2616 2220 #Inv_PI_{number_12}_pdf.exe powershell.exe PID 2220 wrote to memory of 2616 2220 #Inv_PI_{number_12}_pdf.exe powershell.exe PID 2220 wrote to memory of 2616 2220 #Inv_PI_{number_12}_pdf.exe powershell.exe PID 2220 wrote to memory of 2684 2220 #Inv_PI_{number_12}_pdf.exe schtasks.exe PID 2220 wrote to memory of 2684 2220 #Inv_PI_{number_12}_pdf.exe schtasks.exe PID 2220 wrote to memory of 2684 2220 #Inv_PI_{number_12}_pdf.exe schtasks.exe PID 2220 wrote to memory of 2684 2220 #Inv_PI_{number_12}_pdf.exe schtasks.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2220 wrote to memory of 2892 2220 #Inv_PI_{number_12}_pdf.exe #Inv_PI_{number_12}_pdf.exe PID 2892 wrote to memory of 2484 2892 #Inv_PI_{number_12}_pdf.exe remcos.exe PID 2892 wrote to memory of 2484 2892 #Inv_PI_{number_12}_pdf.exe remcos.exe PID 2892 wrote to memory of 2484 2892 #Inv_PI_{number_12}_pdf.exe remcos.exe PID 2892 wrote to memory of 2484 2892 #Inv_PI_{number_12}_pdf.exe remcos.exe PID 2484 wrote to memory of 1944 2484 remcos.exe powershell.exe PID 2484 wrote to memory of 1944 2484 remcos.exe powershell.exe PID 2484 wrote to memory of 1944 2484 remcos.exe powershell.exe PID 2484 wrote to memory of 1944 2484 remcos.exe powershell.exe PID 2484 wrote to memory of 808 2484 remcos.exe schtasks.exe PID 2484 wrote to memory of 808 2484 remcos.exe schtasks.exe PID 2484 wrote to memory of 808 2484 remcos.exe schtasks.exe PID 2484 wrote to memory of 808 2484 remcos.exe schtasks.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 2484 wrote to memory of 1564 2484 remcos.exe remcos.exe PID 1564 wrote to memory of 2068 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 2068 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 2068 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 2068 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 2068 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 536 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 536 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 536 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 536 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 536 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 684 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 684 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 684 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 684 1564 remcos.exe remcos.exe PID 1564 wrote to memory of 684 1564 remcos.exe remcos.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\#Inv_PI_{number_12}_pdf.exe"C:\Users\Admin\AppData\Local\Temp\#Inv_PI_{number_12}_pdf.exe"1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2220 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GxGUIRTmI.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2616
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GxGUIRTmI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp36F8.tmp"2⤵
- Creates scheduled task(s)
PID:2684
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C:\Users\Admin\AppData\Local\Temp\#Inv_PI_{number_12}_pdf.exe"C:\Users\Admin\AppData\Local\Temp\#Inv_PI_{number_12}_pdf.exe"2⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:2892 -
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2484 -
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\GxGUIRTmI.exe"4⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1944
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GxGUIRTmI" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6078.tmp"4⤵
- Creates scheduled task(s)
PID:808
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C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"4⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1564 -
C:\Users\Admin\AppData\Roaming\Remcos\remcos.exeC:\Users\Admin\AppData\Roaming\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\gpbapkurith"5⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
PID:2068
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C:\Users\Admin\AppData\Roaming\Remcos\remcos.exeC:\Users\Admin\AppData\Roaming\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\rjhspcfswbzerfu"5⤵
- Executes dropped EXE
- Accesses Microsoft Outlook accounts
PID:536
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C:\Users\Admin\AppData\Roaming\Remcos\remcos.exeC:\Users\Admin\AppData\Roaming\Remcos\remcos.exe /stext "C:\Users\Admin\AppData\Local\Temp\blmlivqmkjrjbtqurx"5⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:684
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2B
MD5f3b25701fe362ec84616a93a45ce9998
SHA1d62636d8caec13f04e28442a0a6fa1afeb024bbb
SHA256b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209
SHA51298c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84
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Filesize
1KB
MD55a8d04da6debef7b7c2e20fb4e21b004
SHA1ca7ebaef07178192989daff8c05d4b0d08795ea4
SHA256ab9aabb0426f3411bda3a887a67d590aba725d40178c55983dff8d15bd4cf192
SHA5121943fffe667c3698fa677fe7e73cb043764d02cb4db2c08e329dd7b386c08d1d93fdb714a0d6f52158ab6facb10adedc5b024b4b0f02a84bd66440b32870f17e
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms
Filesize7KB
MD5d6201b12503e9e6132157e977836ee23
SHA1c8ddf12a42e037678953637ea3f6cabfb31c0e4e
SHA2566a04e46864ad5a9b7e5091e82ace530516a52663a8d2a2bdf3ad525f09a21260
SHA512ad96a5b9f2dfb92f738967b2f937bcc09870cd6bc600b8ba394ed4a163a9421271f0c009446bcd80dbfe67c16a912acb96c2755a6b158adf967164329cf7f7eb
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e
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Filesize
1.1MB
MD596a62642b79fcb88da4f854b2c46c64c
SHA11778d5bad1acb999458092745af2a6ac3fce39a3
SHA256472a8fbff35cdda49a870d372fa6da50defd8480348438e245f11aad954642d1
SHA5124643ede4706e904a6b6efd4c59d29c5a58c3aa3614de1d4d17e02d8ad33c4ecfd2bfe61de335e726c8ec085717afef77e9146eab4f71fd8a25758a2f3612d457