Analysis
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max time kernel
148s -
max time network
158s -
platform
windows10-2004_x64 -
resource
win10v2004-20240910-en -
resource tags
arch:x64arch:x86image:win10v2004-20240910-enlocale:en-usos:windows10-2004-x64system -
submitted
25-09-2024 13:20
Static task
static1
Behavioral task
behavioral1
Sample
18V4860 TS Light Diesel.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
18V4860 TS Light Diesel.exe
Resource
win10v2004-20240910-en
General
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Target
18V4860 TS Light Diesel.exe
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Size
881KB
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MD5
88ad99bd08e94b721914d8368c3a259b
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SHA1
8d6518f2ea260d9835c3ed7190808fc263ed010a
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SHA256
4cce5506593907c3db78282849ed41729ca7cf737e1d38cb82dc10e27d92ff16
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SHA512
9dece9766da615b5b5b72c1d8167f7c3f54a73d3cc95a024e6b541e7c6c278606d9e8fdba37102cb251ed227a16780630033a6e8dcee9acc075fd417bb8c3e54
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SSDEEP
24576:qQ/EymH4hro8jGqj56ulEJ8v+FgFOfY823:3yHGrhGqdFlECv+CX
Malware Config
Extracted
remcos
RemoteHost
www.drechftankholding.com: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
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
dfgh
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mouse_option
false
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mutex
Rmc-8J6PG9
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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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Detected Nirsoft tools 3 IoCs
Free utilities often used by attackers which can steal passwords, product keys, etc.
resource yara_rule behavioral2/memory/4692-71-0x0000000000400000-0x0000000000462000-memory.dmp Nirsoft behavioral2/memory/1260-74-0x0000000000400000-0x0000000000424000-memory.dmp Nirsoft behavioral2/memory/3312-65-0x0000000000400000-0x0000000000478000-memory.dmp Nirsoft -
NirSoft MailPassView 1 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral2/memory/4692-71-0x0000000000400000-0x0000000000462000-memory.dmp MailPassView -
NirSoft WebBrowserPassView 1 IoCs
Password recovery tool for various web browsers
resource yara_rule behavioral2/memory/3312-65-0x0000000000400000-0x0000000000478000-memory.dmp WebBrowserPassView -
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.
pid Process 4372 powershell.exe 3524 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation 18V4860 TS Light Diesel.exe -
Uses the VBS compiler for execution 1 TTPs
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts vbc.exe -
Suspicious use of SetThreadContext 4 IoCs
description pid Process procid_target PID 4364 set thread context of 392 4364 18V4860 TS Light Diesel.exe 102 PID 392 set thread context of 3312 392 vbc.exe 103 PID 392 set thread context of 4692 392 vbc.exe 105 PID 392 set thread context of 1260 392 vbc.exe 106 -
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 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description 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 vbc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language vbc.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 18V4860 TS Light Diesel.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.
pid Process 4196 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 18 IoCs
pid Process 4364 18V4860 TS Light Diesel.exe 4372 powershell.exe 3524 powershell.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 4364 18V4860 TS Light Diesel.exe 3524 powershell.exe 4372 powershell.exe 3312 vbc.exe 3312 vbc.exe 1260 vbc.exe 1260 vbc.exe 3312 vbc.exe 3312 vbc.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
pid Process 392 vbc.exe -
Suspicious behavior: MapViewOfSection 4 IoCs
pid Process 392 vbc.exe 392 vbc.exe 392 vbc.exe 392 vbc.exe -
Suspicious use of AdjustPrivilegeToken 4 IoCs
description pid Process Token: SeDebugPrivilege 4364 18V4860 TS Light Diesel.exe Token: SeDebugPrivilege 4372 powershell.exe Token: SeDebugPrivilege 3524 powershell.exe Token: SeDebugPrivilege 1260 vbc.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 392 vbc.exe -
Suspicious use of WriteProcessMemory 42 IoCs
description pid Process procid_target PID 4364 wrote to memory of 4372 4364 18V4860 TS Light Diesel.exe 94 PID 4364 wrote to memory of 4372 4364 18V4860 TS Light Diesel.exe 94 PID 4364 wrote to memory of 4372 4364 18V4860 TS Light Diesel.exe 94 PID 4364 wrote to memory of 3524 4364 18V4860 TS Light Diesel.exe 96 PID 4364 wrote to memory of 3524 4364 18V4860 TS Light Diesel.exe 96 PID 4364 wrote to memory of 3524 4364 18V4860 TS Light Diesel.exe 96 PID 4364 wrote to memory of 4196 4364 18V4860 TS Light Diesel.exe 98 PID 4364 wrote to memory of 4196 4364 18V4860 TS Light Diesel.exe 98 PID 4364 wrote to memory of 4196 4364 18V4860 TS Light Diesel.exe 98 PID 4364 wrote to memory of 4068 4364 18V4860 TS Light Diesel.exe 100 PID 4364 wrote to memory of 4068 4364 18V4860 TS Light Diesel.exe 100 PID 4364 wrote to memory of 4068 4364 18V4860 TS Light Diesel.exe 100 PID 4364 wrote to memory of 460 4364 18V4860 TS Light Diesel.exe 101 PID 4364 wrote to memory of 460 4364 18V4860 TS Light Diesel.exe 101 PID 4364 wrote to memory of 460 4364 18V4860 TS Light Diesel.exe 101 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 4364 wrote to memory of 392 4364 18V4860 TS Light Diesel.exe 102 PID 392 wrote to memory of 3312 392 vbc.exe 103 PID 392 wrote to memory of 3312 392 vbc.exe 103 PID 392 wrote to memory of 3312 392 vbc.exe 103 PID 392 wrote to memory of 3312 392 vbc.exe 103 PID 392 wrote to memory of 1236 392 vbc.exe 104 PID 392 wrote to memory of 1236 392 vbc.exe 104 PID 392 wrote to memory of 1236 392 vbc.exe 104 PID 392 wrote to memory of 4692 392 vbc.exe 105 PID 392 wrote to memory of 4692 392 vbc.exe 105 PID 392 wrote to memory of 4692 392 vbc.exe 105 PID 392 wrote to memory of 4692 392 vbc.exe 105 PID 392 wrote to memory of 1260 392 vbc.exe 106 PID 392 wrote to memory of 1260 392 vbc.exe 106 PID 392 wrote to memory of 1260 392 vbc.exe 106 PID 392 wrote to memory of 1260 392 vbc.exe 106
Processes
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C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.exe"C:\Users\Admin\AppData\Local\Temp\18V4860 TS Light Diesel.exe"1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4364 -
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\18V4860 TS Light Diesel.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4372
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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\PNLFWPpnxTlxjH.exe"2⤵
- Command and Scripting Interpreter: PowerShell
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3524
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C:\Windows\SysWOW64\schtasks.exe"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\PNLFWPpnxTlxjH" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE59D.tmp"2⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4196
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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⤵PID:4068
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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⤵PID:460
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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⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious behavior: MapViewOfSection
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:392 -
C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\drfiyaplwlciyqpjafbdmbdcokhz"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
PID:3312
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\nmkbqsanstunjxlnjqofxgptxryafdo"3⤵PID:1236
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\nmkbqsanstunjxlnjqofxgptxryafdo"3⤵
- Accesses Microsoft Outlook accounts
- System Location Discovery: System Language Discovery
PID:4692
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C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exeC:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe /stext "C:\Users\Admin\AppData\Local\Temp\xgxt"3⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1260
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
144B
MD53f6f629555c740328668d156bb5d8daa
SHA120259e73381140429d875094e08ab90c3be5dd90
SHA2564b7148e0a7a107f20d77abcd44594b84ff494ae0c6b0e58640e571d54fa0506b
SHA512cc3130712143c37f7fee12efcecb52b25ea9f874ac18d1172ce36db00be3e3af1bc7519ff7e12c30a49a5f79ea18f77e20222fe76d4c11035ff6850092719749
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Filesize
2KB
MD5968cb9309758126772781b83adb8a28f
SHA18da30e71accf186b2ba11da1797cf67f8f78b47c
SHA25692099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a
SHA5124bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3
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Filesize
18KB
MD5ceccf3200b2cec1b7257d70e1b66728c
SHA1f05ee30bc981c2f23d9e637a4333896907ba8b11
SHA256d79e925dc68cc74b3422a373920aae06c02899923f2b63f1d5ea1804ba1e47e9
SHA512968391f4834c5b816e5c0a783970a847e76993fccebec6ddef4766464ec9ef1117409137412cdd5f76221596fbee0b40a9cd214c19efdbe3f86270c46ada325d
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
4KB
MD505d209dc2e52f4877b0210319d699d7c
SHA1f80b9ea3164019831fa0b5cffc864c0d496a002b
SHA256278f3fd9076c23dc3d397375c5f586aa23b15c9e42b22139748e20f70f127160
SHA512701f72884bf941ec3e60f6f8bb98c26743447c276de2d15ca27a406ccc6a39dafeef9a6f83264d52ebb93923af738fa7b16f617fb33dc54e5a7ed93b188aee9a
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Filesize
1KB
MD50f11a0b0912b12cac5d2a6e47bad4f60
SHA1d186ab6c79df1011323f8aadd0c9972e98eca161
SHA256dcefad1183c22a63e150b3d9cfded85795bbf67ddac7bbfc8c383f54174cbda7
SHA512eb6d1550091ab321f90a3911e7fb3428c4081dbd59758de475833de9db7e145263d64de574ba7611342e11ea867b3e02686db12d22480aacbc8ca7dca060a139