Analysis
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max time kernel
56s -
max time network
60s -
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 07:30
Static task
static1
Behavioral task
behavioral1
Sample
RustAnticheat.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
RustAnticheat.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
RustAnticheat.exe
Resource
win10v2004-20240910-en
Errors
General
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Target
RustAnticheat.exe
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Size
1.1MB
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MD5
0d0d79a916d356823c4742f3253aa6aa
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SHA1
5e267d313557b5dbf6c216e79190b20fb5ab8177
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SHA256
20868115f180702553380c551df502535b8aa01c3ef630d408edd849896e631a
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SHA512
9bbc72f3b647885dee27a27f5e30e2c845f5eb395bcf545ba7c75d65a0386f9c97dab4348a946fd693a90f4994550fda41a0528072cfeb8106ab603232573365
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SSDEEP
24576:drAsHOi4ltSzmSEPGUSa/D3mIaCmo/NE1a1pvRQrhWgJbavyRAh79c0ih:5Lu1tSzmhR/nCo/K0pZQrE2RAh79Lih
Malware Config
Extracted
xworm
web-amend.gl.at.ply.gg:59501
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Install_directory
%Userprofile%
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install_file
USB.exe
Signatures
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Detect Umbral payload 2 IoCs
resource yara_rule behavioral3/files/0x000a000000023b97-27.dat family_umbral behavioral3/memory/5044-36-0x0000027589B90000-0x0000027589BD0000-memory.dmp family_umbral -
Detect Xworm Payload 2 IoCs
resource yara_rule behavioral3/files/0x000a000000023b96-16.dat family_xworm behavioral3/memory/868-37-0x00000000001F0000-0x000000000020A000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
pid Process 3740 powershell.exe 3176 powershell.exe 3660 powershell.exe 2964 powershell.exe -
Checks computer location settings 2 TTPs 2 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 RuntimeBroker.exe Key value queried \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\Control Panel\International\Geo\Nation RustAnticheat.exe -
Drops startup file 2 IoCs
description ioc Process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk RuntimeBroker.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\RuntimeBroker.lnk RuntimeBroker.exe -
Executes dropped EXE 4 IoCs
pid Process 3760 Loader (1).exe 868 RuntimeBroker.exe 5044 Litvin.exe 4204 RuntimeBroker -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2629364133-3182087385-364449604-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\RuntimeBroker" RuntimeBroker.exe -
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
flow ioc 10 ip-api.com -
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 1 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 Loader (1).exe -
Modifies data under HKEY_USERS 15 IoCs
description ioc Process Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10" LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History LogonUI.exe Key created \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271" LogonUI.exe Set value (data) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00 LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "4" LogonUI.exe Set value (int) \REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1" LogonUI.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 412 schtasks.exe -
Suspicious behavior: EnumeratesProcesses 9 IoCs
pid Process 2964 powershell.exe 2964 powershell.exe 3740 powershell.exe 3740 powershell.exe 3176 powershell.exe 3176 powershell.exe 3660 powershell.exe 3660 powershell.exe 868 RuntimeBroker.exe -
Suspicious use of AdjustPrivilegeToken 52 IoCs
description pid Process Token: SeDebugPrivilege 868 RuntimeBroker.exe Token: SeDebugPrivilege 5044 Litvin.exe Token: SeIncreaseQuotaPrivilege 4868 wmic.exe Token: SeSecurityPrivilege 4868 wmic.exe Token: SeTakeOwnershipPrivilege 4868 wmic.exe Token: SeLoadDriverPrivilege 4868 wmic.exe Token: SeSystemProfilePrivilege 4868 wmic.exe Token: SeSystemtimePrivilege 4868 wmic.exe Token: SeProfSingleProcessPrivilege 4868 wmic.exe Token: SeIncBasePriorityPrivilege 4868 wmic.exe Token: SeCreatePagefilePrivilege 4868 wmic.exe Token: SeBackupPrivilege 4868 wmic.exe Token: SeRestorePrivilege 4868 wmic.exe Token: SeShutdownPrivilege 4868 wmic.exe Token: SeDebugPrivilege 4868 wmic.exe Token: SeSystemEnvironmentPrivilege 4868 wmic.exe Token: SeRemoteShutdownPrivilege 4868 wmic.exe Token: SeUndockPrivilege 4868 wmic.exe Token: SeManageVolumePrivilege 4868 wmic.exe Token: 33 4868 wmic.exe Token: 34 4868 wmic.exe Token: 35 4868 wmic.exe Token: 36 4868 wmic.exe Token: SeIncreaseQuotaPrivilege 4868 wmic.exe Token: SeSecurityPrivilege 4868 wmic.exe Token: SeTakeOwnershipPrivilege 4868 wmic.exe Token: SeLoadDriverPrivilege 4868 wmic.exe Token: SeSystemProfilePrivilege 4868 wmic.exe Token: SeSystemtimePrivilege 4868 wmic.exe Token: SeProfSingleProcessPrivilege 4868 wmic.exe Token: SeIncBasePriorityPrivilege 4868 wmic.exe Token: SeCreatePagefilePrivilege 4868 wmic.exe Token: SeBackupPrivilege 4868 wmic.exe Token: SeRestorePrivilege 4868 wmic.exe Token: SeShutdownPrivilege 4868 wmic.exe Token: SeDebugPrivilege 4868 wmic.exe Token: SeSystemEnvironmentPrivilege 4868 wmic.exe Token: SeRemoteShutdownPrivilege 4868 wmic.exe Token: SeUndockPrivilege 4868 wmic.exe Token: SeManageVolumePrivilege 4868 wmic.exe Token: 33 4868 wmic.exe Token: 34 4868 wmic.exe Token: 35 4868 wmic.exe Token: 36 4868 wmic.exe Token: SeDebugPrivilege 2964 powershell.exe Token: SeDebugPrivilege 3740 powershell.exe Token: SeDebugPrivilege 3176 powershell.exe Token: SeDebugPrivilege 3660 powershell.exe Token: SeDebugPrivilege 868 RuntimeBroker.exe Token: SeDebugPrivilege 4204 RuntimeBroker Token: SeShutdownPrivilege 1752 shutdown.exe Token: SeRemoteShutdownPrivilege 1752 shutdown.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
pid Process 3760 Loader (1).exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 868 RuntimeBroker.exe 2316 LogonUI.exe -
Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1868 wrote to memory of 3760 1868 RustAnticheat.exe 84 PID 1868 wrote to memory of 3760 1868 RustAnticheat.exe 84 PID 1868 wrote to memory of 3760 1868 RustAnticheat.exe 84 PID 1868 wrote to memory of 868 1868 RustAnticheat.exe 85 PID 1868 wrote to memory of 868 1868 RustAnticheat.exe 85 PID 1868 wrote to memory of 5044 1868 RustAnticheat.exe 86 PID 1868 wrote to memory of 5044 1868 RustAnticheat.exe 86 PID 5044 wrote to memory of 4868 5044 Litvin.exe 87 PID 5044 wrote to memory of 4868 5044 Litvin.exe 87 PID 868 wrote to memory of 2964 868 RuntimeBroker.exe 93 PID 868 wrote to memory of 2964 868 RuntimeBroker.exe 93 PID 868 wrote to memory of 3740 868 RuntimeBroker.exe 96 PID 868 wrote to memory of 3740 868 RuntimeBroker.exe 96 PID 868 wrote to memory of 3176 868 RuntimeBroker.exe 98 PID 868 wrote to memory of 3176 868 RuntimeBroker.exe 98 PID 868 wrote to memory of 3660 868 RuntimeBroker.exe 100 PID 868 wrote to memory of 3660 868 RuntimeBroker.exe 100 PID 868 wrote to memory of 412 868 RuntimeBroker.exe 105 PID 868 wrote to memory of 412 868 RuntimeBroker.exe 105 PID 868 wrote to memory of 1752 868 RuntimeBroker.exe 115 PID 868 wrote to memory of 1752 868 RuntimeBroker.exe 115 -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
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C:\Users\Admin\AppData\Local\Temp\RustAnticheat.exe"C:\Users\Admin\AppData\Local\Temp\RustAnticheat.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1868 -
C:\Users\Admin\AppData\Roaming\Loader (1).exe"C:\Users\Admin\AppData\Roaming\Loader (1).exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of FindShellTrayWindow
PID:3760
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"2⤵
- Checks computer location settings
- Drops startup file
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:868 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2964
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker.exe'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3740
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\RuntimeBroker'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3176
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C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RuntimeBroker'3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3660
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "RuntimeBroker" /tr "C:\Users\Admin\RuntimeBroker"3⤵
- Scheduled Task/Job: Scheduled Task
PID:412
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C:\Windows\SYSTEM32\shutdown.exeshutdown.exe /f /s /t 03⤵
- Suspicious use of AdjustPrivilegeToken
PID:1752
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C:\Users\Admin\AppData\Roaming\Litvin.exe"C:\Users\Admin\AppData\Roaming\Litvin.exe"2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5044 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:4868
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C:\Users\Admin\RuntimeBrokerC:\Users\Admin\RuntimeBroker1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4204
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C:\Windows\system32\LogonUI.exe"LogonUI.exe" /flags:0x4 /state0:0xa3971855 /state1:0x41c64e6d1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2316
Network
MITRE ATT&CK Enterprise v15
Execution
Command and Scripting Interpreter
1PowerShell
1Scheduled Task/Job
1Scheduled Task
1Persistence
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Privilege Escalation
Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Scheduled Task/Job
1Scheduled Task
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD577d622bb1a5b250869a3238b9bc1402b
SHA1d47f4003c2554b9dfc4c16f22460b331886b191b
SHA256f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb
SHA512d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9
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Filesize
944B
MD59c740b7699e2363ac4ecdf496520ca35
SHA1aa8691a8c56500d82c5fc8c35209bc6fe50ab1d9
SHA256be96c91b62ba9ba7072ab89e66543328c9e4395150f9dbe8067332d94a3ecc61
SHA5128885683f96353582eb871209e766e7eba1a72a2837ce27ea298b7b5b169621d1fa3fce25346b6bfd258b52642644234da9559d4e765a2023a5a5fc1f544cc7af
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Filesize
944B
MD567668db6b58b27a901b0f39b4ecc4860
SHA153d610904acc243780be1f91773475bfa7cfd6ee
SHA2561c7238f064efd555bf174b09b470b5c4126da5681efc8a8889e139a74f472ed4
SHA5129cdb241e1e66da3cc2fa7d749d888f30d4c88e9e7f705ebb5b346dc6e831eae96503d2269f560099f67a25c91a67d9b2cbf414d6c5d4aeed5fd2506e1f89af41
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
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Filesize
229KB
MD5259101ea3a8a1c36a8ebe30f28deb851
SHA1b5302bb4383bfa6e1f8a074182d1eecd79cd0caf
SHA25691fd2cdc10b62a3aa10837c50c9dd2958f58a7c6feb6a5d29f73c5edca033999
SHA51214c266cd69408d3cca1fa8dfeb0e9abedce87985b93bf6190b6436f74f122e06264c49c713d259eaa9f393180e3bef42462cb851686c2f32882cf03942e6dde3
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Filesize
827KB
MD5eefb801774c5ccb44153268a9357f5f1
SHA1b1906b22e14edd142c52808ab3e5ba9346b85de5
SHA256677aeb1981c58cba41a5d53ccbbf5b471e62dc49dc326570767da940560d840d
SHA5121cf162fe6184d68dca514059d2de1123e80d0faac401765a54224aa5a987c9454bc92263fbec566835aa7b402f1f63ba59bb425ccc139e0a7391e66991f270b7
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Filesize
77KB
MD57c4f97717ce74232ede2fc0b48956636
SHA1d7dd219805af9fb9251214d598badc3d4d1b7bf8
SHA256f84e5ceb6d0c53993bf5139e7e58dcc06c8cc7d6bc1e5e97171445f6fe01109d
SHA512ad1963a20fc98927239eb1aaa6f881913ac5884c28c00b59637e4fd51dbafd376150e1e6a5cf8634f6a5610bd2286dc185b3f14362c06a613dfe40db528cea26