Analysis
- max time kernel
133s - max time network
138s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
arch:x64arch:x86image:win10-20240404-enlocale:en-usos:windows10-1703-x64system - submitted
25/09/2024, 07:25
Static task
static1
Behavioral task
behavioral1
Sample
RustAnticheat.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
RustAnticheat.exe
Resource
win10-20240404-en
Behavioral task
behavioral3
Sample
RustAnticheat.exe
Resource
win7-20240708-en
Behavioral task
behavioral4
Sample
RustAnticheat.exe
Resource
win10v2004-20240802-en
General
- Target RustAnticheat.exe
- Size 1.1MB
- Sample240925-h9fv4ssflp
- SHA256 20868115f180702553380c551df502535b8aa01c3ef630d408edd849896e631a
- MD5 0d0d79a916d356823c4742f3253aa6aa
- SHA1 5e267d313557b5dbf6c216e79190b20fb5ab8177
- SHA512 9bbc72f3b647885dee27a27f5e30e2c845f5eb395bcf545ba7c75d65a0386f9c97dab4348a946fd693a90f4994550fda41a0528072cfeb8106ab603232573365
- SSDEEP 24576:drAsHOi4ltSzmSEPGUSa/D3mIaCmo/NE1a1pvRQrhWgJbavyRAh79c0ih:5Lu1tSzmhR/nCo/K0pZQrE2RAh79Lih
- MD5 SHA1 SHA512 SSDEEP
Malware Config
Extracted
-
xworm
-
web-amend.gl.at.ply.gg:59501
-
Install_directory
%Userprofile%
-
install_file
USB.exe
Extracted
-
umbral
-
https://discord.com/api/webhooks/1288399761308782603/dBc32ufL91AjkI32Qso8IT_vaA0Frj3MP9_ivfjpfIEs4tXDc5SB89aA7LHc09xTZHZv
Signatures
- Detect Umbral payload 2 IoCs
resource yara_rule behavioral2/files/0x000800000001ac0e-17.dat family_umbral behavioral2/memory/3560-18-0x0000014B88B40000-0x0000014B88B80000-memory.dmp family_umbral - Detect Xworm Payload 2 IoCs
resource yara_rule behavioral2/files/0x000800000001ac0b-11.dat family_xworm behavioral2/memory/1280-19-0x00000000008C0000-0x00000000008DA000-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 1396 powershell.exe 1768 powershell.exe 316 powershell.exe 2300 powershell.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 5 IoCs
pid Process 2472 Loader (1).exe 1280 RuntimeBroker.exe 3560 Litvin.exe 3376 RuntimeBroker 4960 RuntimeBroker - Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-4106386276-4127174233-3637007343-1000\Software\Microsoft\Windows\CurrentVersion\Run\RuntimeBroker = "C:\\Users\\Admin\\RuntimeBroker" RuntimeBroker.exe - Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- 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 - Delays execution with timeout.exe 1 IoCs
pid Process 2580 timeout.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 1720 schtasks.exe - Suspicious behavior: EnumeratesProcesses 13 IoCs
pid Process 1396 powershell.exe 1396 powershell.exe 1396 powershell.exe 1768 powershell.exe 1768 powershell.exe 1768 powershell.exe 316 powershell.exe 316 powershell.exe 316 powershell.exe 2300 powershell.exe 2300 powershell.exe 2300 powershell.exe 1280 RuntimeBroker.exe - Suspicious use of AdjustPrivilegeToken 64 IoCs
description pid Process Token: SeDebugPrivilege 1280 RuntimeBroker.exe Token: SeDebugPrivilege 3560 Litvin.exe Token: SeIncreaseQuotaPrivilege 5012 wmic.exe Token: SeSecurityPrivilege 5012 wmic.exe Token: SeTakeOwnershipPrivilege 5012 wmic.exe Token: SeLoadDriverPrivilege 5012 wmic.exe Token: SeSystemProfilePrivilege 5012 wmic.exe Token: SeSystemtimePrivilege 5012 wmic.exe Token: SeProfSingleProcessPrivilege 5012 wmic.exe Token: SeIncBasePriorityPrivilege 5012 wmic.exe Token: SeCreatePagefilePrivilege 5012 wmic.exe Token: SeBackupPrivilege 5012 wmic.exe Token: SeRestorePrivilege 5012 wmic.exe Token: SeShutdownPrivilege 5012 wmic.exe Token: SeDebugPrivilege 5012 wmic.exe Token: SeSystemEnvironmentPrivilege 5012 wmic.exe Token: SeRemoteShutdownPrivilege 5012 wmic.exe Token: SeUndockPrivilege 5012 wmic.exe Token: SeManageVolumePrivilege 5012 wmic.exe Token: 33 5012 wmic.exe Token: 34 5012 wmic.exe Token: 35 5012 wmic.exe Token: 36 5012 wmic.exe Token: SeIncreaseQuotaPrivilege 5012 wmic.exe Token: SeSecurityPrivilege 5012 wmic.exe Token: SeTakeOwnershipPrivilege 5012 wmic.exe Token: SeLoadDriverPrivilege 5012 wmic.exe Token: SeSystemProfilePrivilege 5012 wmic.exe Token: SeSystemtimePrivilege 5012 wmic.exe Token: SeProfSingleProcessPrivilege 5012 wmic.exe Token: SeIncBasePriorityPrivilege 5012 wmic.exe Token: SeCreatePagefilePrivilege 5012 wmic.exe Token: SeBackupPrivilege 5012 wmic.exe Token: SeRestorePrivilege 5012 wmic.exe Token: SeShutdownPrivilege 5012 wmic.exe Token: SeDebugPrivilege 5012 wmic.exe Token: SeSystemEnvironmentPrivilege 5012 wmic.exe Token: SeRemoteShutdownPrivilege 5012 wmic.exe Token: SeUndockPrivilege 5012 wmic.exe Token: SeManageVolumePrivilege 5012 wmic.exe Token: 33 5012 wmic.exe Token: 34 5012 wmic.exe Token: 35 5012 wmic.exe Token: 36 5012 wmic.exe Token: SeDebugPrivilege 1396 powershell.exe Token: SeIncreaseQuotaPrivilege 1396 powershell.exe Token: SeSecurityPrivilege 1396 powershell.exe Token: SeTakeOwnershipPrivilege 1396 powershell.exe Token: SeLoadDriverPrivilege 1396 powershell.exe Token: SeSystemProfilePrivilege 1396 powershell.exe Token: SeSystemtimePrivilege 1396 powershell.exe Token: SeProfSingleProcessPrivilege 1396 powershell.exe Token: SeIncBasePriorityPrivilege 1396 powershell.exe Token: SeCreatePagefilePrivilege 1396 powershell.exe Token: SeBackupPrivilege 1396 powershell.exe Token: SeRestorePrivilege 1396 powershell.exe Token: SeShutdownPrivilege 1396 powershell.exe Token: SeDebugPrivilege 1396 powershell.exe Token: SeSystemEnvironmentPrivilege 1396 powershell.exe Token: SeRemoteShutdownPrivilege 1396 powershell.exe Token: SeUndockPrivilege 1396 powershell.exe Token: SeManageVolumePrivilege 1396 powershell.exe Token: 33 1396 powershell.exe Token: 34 1396 powershell.exe - Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 1280 RuntimeBroker.exe - Suspicious use of WriteProcessMemory 25 IoCs
description pid Process procid_target PID 1888 wrote to memory of 2472 1888 RustAnticheat.exe 73 PID 1888 wrote to memory of 2472 1888 RustAnticheat.exe 73 PID 1888 wrote to memory of 2472 1888 RustAnticheat.exe 73 PID 1888 wrote to memory of 1280 1888 RustAnticheat.exe 74 PID 1888 wrote to memory of 1280 1888 RustAnticheat.exe 74 PID 1888 wrote to memory of 3560 1888 RustAnticheat.exe 75 PID 1888 wrote to memory of 3560 1888 RustAnticheat.exe 75 PID 3560 wrote to memory of 5012 3560 Litvin.exe 76 PID 3560 wrote to memory of 5012 3560 Litvin.exe 76 PID 1280 wrote to memory of 1396 1280 RuntimeBroker.exe 80 PID 1280 wrote to memory of 1396 1280 RuntimeBroker.exe 80 PID 1280 wrote to memory of 1768 1280 RuntimeBroker.exe 83 PID 1280 wrote to memory of 1768 1280 RuntimeBroker.exe 83 PID 1280 wrote to memory of 316 1280 RuntimeBroker.exe 85 PID 1280 wrote to memory of 316 1280 RuntimeBroker.exe 85 PID 1280 wrote to memory of 2300 1280 RuntimeBroker.exe 87 PID 1280 wrote to memory of 2300 1280 RuntimeBroker.exe 87 PID 1280 wrote to memory of 1720 1280 RuntimeBroker.exe 89 PID 1280 wrote to memory of 1720 1280 RuntimeBroker.exe 89 PID 1280 wrote to memory of 820 1280 RuntimeBroker.exe 93 PID 1280 wrote to memory of 820 1280 RuntimeBroker.exe 93 PID 1280 wrote to memory of 4188 1280 RuntimeBroker.exe 95 PID 1280 wrote to memory of 4188 1280 RuntimeBroker.exe 95 PID 4188 wrote to memory of 2580 4188 cmd.exe 97 PID 4188 wrote to memory of 2580 4188 cmd.exe 97 - 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⤵
- Suspicious use of WriteProcessMemory
PID:1888 -
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
PID:2472
-
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C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"2⤵
- 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:1280 -
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:1396
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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
PID:1768
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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
PID:316
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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
PID:2300
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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:1720
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C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /delete /f /tn "RuntimeBroker"3⤵PID:820
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp3D9C.tmp.bat""3⤵
- Suspicious use of WriteProcessMemory
PID:4188 -
C:\Windows\system32\timeout.exetimeout 34⤵
- Delays execution with timeout.exe
PID:2580
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-
-
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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:3560 -
C:\Windows\System32\Wbem\wmic.exe"wmic.exe" csproduct get uuid3⤵
- Suspicious use of AdjustPrivilegeToken
PID:5012
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-
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C:\Users\Admin\RuntimeBrokerC:\Users\Admin\RuntimeBroker1⤵
- Executes dropped EXE
PID:3376
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C:\Users\Admin\RuntimeBrokerC:\Users\Admin\RuntimeBroker1⤵
- Executes dropped EXE
PID:4960
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
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\RuntimeBroker.log
- Size 654B
- SHA256 87ba77c13905298acbac72be90949c4fe0755b6eff9777615aa37f252515f151
- MD5 16c5fce5f7230eea11598ec11ed42862
- SHA1 75392d4824706090f5e8907eee1059349c927600
- SHA512 153edd6da59beea6cc411ed7383c32916425d6ebb65f04c65aab7c1d6b25443d143aa8449aa92149de0ad8a975f6ecaa60f9f7574536eec6b38fe5fd3a6c6adc
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
- Size 3KB
- SHA256 fdd7d9def6f9f0c0f2e60dbc8a2d1999071cd7d3095e9e087bb1cda7a614ac3c
- MD5 8592ba100a78835a6b94d5949e13dfc1
- SHA1 63e901200ab9a57c7dd4c078d7f75dcd3b357020
- SHA512 87f98e6cb61b2a2a7d65710c4d33881d89715eb7a06e00d492259f35c3902498baabffc5886be0ec5a14312ad4c262e3fc40cd3a5cb91701af0fb229726b88c3
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 32b6311d19186ef7ddce70d92c35ae8e036982ae4d3f2e5fd84c706ee758136f
- MD5 262153ae161575e0fc1d589fec4c5115
- SHA1 99f2b019198a237754214a05b20d7bb89b106e72
- SHA512 ae5f261431e7d812623064033f3669f32a8f6d96322e0876f1d184f8c121867a89206c553d99aaa5c7abf09df6723022d1ad32f3477dd4b810c1e74862c11989
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 61937d8bd9442a70272441b33a475a7f5b1f2a3dd92558588f93b5990443e5a1
- MD5 43aa5f04dc397dbb2c0d997d8ba42183
- SHA1 faf20c14c5ab9996d07d3fc128b5af35ab095f12
- SHA512 f38e02d32bdfbf98925c5d10c743d80e9b2c4dc9934adbdc5bf715dc5866a0444ef70f7964bafb965857908b2fa278934bb514159f509594041b20619ddecfb2
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
- Size 1KB
- SHA256 197dbbfaab543651c8b914b63ed906cb2eacd9dcdb7eb96b58fbf0252d4a9dcd
- MD5 7c70ae2e2cecb468f4b5e517cf46290a
- SHA1 b54d76f6b3465e1e48496649328eae1f83086d56
- SHA512 d66f213d041b7fb2dcdb66eb3eaf15b617032155fb7faaf2adaec5532c60ff3adb429772cbb1f253f84cd52d3f3065843c6496133d5656fb50d65872eb0cb3a8
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qsgvk3eu.vl4.ps1
- Size 1B
- SHA256 6b86b273ff34fce19d6b804eff5a3f5747ada4eaa22f1d49c01e52ddb7875b4b
- MD5 c4ca4238a0b923820dcc509a6f75849b
- SHA1 356a192b7913b04c54574d18c28d46e6395428ab
- SHA512 4dff4ea340f0a823f15d3f4f01ab62eae0e5da579ccb851f8db9dfe84c58b2b37b89903a740e1ee172da793a6e79d560e5f7f9bd058a12a280433ed6fa46510a
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Local\Temp\tmp3D9C.tmp.bat
- Size 162B
- SHA256 a17a28e8995f9ba3da368a8a7e26604477bf411659de91faebc64cd90a789c19
- MD5 7d410c278c9bff01ce0a715ce68830c9
- SHA1 676acd04d39bbda93edc38df632d5bf8328b7f07
- SHA512 25dbf01844d30de70e6fcb73b0538aaf2257e4b11d2859fbadd3814c3b760a4cee3a51c9e153f80222a446b8b5e56b6eb24acc3855fdde6815593a53a4a84349
- MD5 SHA1 SHA512
- Path C:\Users\Admin\AppData\Roaming\Litvin.exe
- Size 229KB
- SHA256 91fd2cdc10b62a3aa10837c50c9dd2958f58a7c6feb6a5d29f73c5edca033999
- MD5 259101ea3a8a1c36a8ebe30f28deb851
- SHA1 b5302bb4383bfa6e1f8a074182d1eecd79cd0caf
- SHA512 14c266cd69408d3cca1fa8dfeb0e9abedce87985b93bf6190b6436f74f122e06264c49c713d259eaa9f393180e3bef42462cb851686c2f32882cf03942e6dde3
- SSDEEP 6144:9loZM+rIkd8g+EtXHkv/iD44GAYSQPL48BECDjaekTb8e1mumi:foZtL+EP84GAYSQPL48BECDjaeGn
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\Loader (1).exe
- Size 827KB
- SHA256 677aeb1981c58cba41a5d53ccbbf5b471e62dc49dc326570767da940560d840d
- MD5 eefb801774c5ccb44153268a9357f5f1
- SHA1 b1906b22e14edd142c52808ab3e5ba9346b85de5
- SHA512 1cf162fe6184d68dca514059d2de1123e80d0faac401765a54224aa5a987c9454bc92263fbec566835aa7b402f1f63ba59bb425ccc139e0a7391e66991f270b7
- SSDEEP 12288:O7niCIn2NBgBPpyVFPF/ixQzE9PnGRFpH8etr5wu3Uasnu9G1eI++e6Hi1RJm6U:GvXPPF/il9MFd8ar5easQGQRRRJm
- MD5 SHA1 SHA512 SSDEEP
- Path C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
- Size 77KB
- SHA256 f84e5ceb6d0c53993bf5139e7e58dcc06c8cc7d6bc1e5e97171445f6fe01109d
- MD5 7c4f97717ce74232ede2fc0b48956636
- SHA1 d7dd219805af9fb9251214d598badc3d4d1b7bf8
- SHA512 ad1963a20fc98927239eb1aaa6f881913ac5884c28c00b59637e4fd51dbafd376150e1e6a5cf8634f6a5610bd2286dc185b3f14362c06a613dfe40db528cea26
- SSDEEP 1536:mZOJzQQTaCXEn+bli8qXa8iG4Rk6IV4Zp8OZiTSWUV:mZCTaui+bliVKcdOZi3e
- MD5 SHA1 SHA512 SSDEEP