Analysis Overview
SHA256
2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db
Threat Level: Known bad
The file 2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db was found to be: Known bad.
Malicious Activity Summary
Umbral
Detect Umbral payload
Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
Detects executables Discord URL observed in first stage droppers
Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
Detects executables containing possible sandbox analysis VM usernames
Detects executables containing possible sandbox system UUIDs
Detects executables containing possible sandbox analysis VM names
Detects executables attemping to enumerate video devices using WMI
Checks computer location settings
Deletes itself
Executes dropped EXE
Writes to the Master Boot Record (MBR)
Adds Run key to start application
Unsigned PE
Enumerates physical storage devices
Delays execution with timeout.exe
Suspicious use of AdjustPrivilegeToken
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-22 19:21
Signatures
Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-22 19:21
Reported
2024-06-22 19:24
Platform
win7-20240508-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Detect Umbral payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Umbral
Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Detects executables Discord URL observed in first stage droppers
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables attemping to enumerate video devices using WMI
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox analysis VM names
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox analysis VM usernames
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox system UUIDs
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Deletes itself
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\cmd.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\MBR.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\MasonMBR.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\MBR = "C:\\Users\\Admin\\AppData\\Roaming\\MBR.exe" | C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2737914667-933161113-3798636211-1000\Software\Microsoft\Windows\CurrentVersion\Run\MasonMBR = "C:\\Users\\Admin\\AppData\\Roaming\\MasonMBR.exe" | C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Roaming\MasonMBR.exe | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\MBR.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe
"C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe"
C:\Users\Admin\AppData\Roaming\MBR.exe
"C:\Users\Admin\AppData\Roaming\MBR.exe"
C:\Users\Admin\AppData\Roaming\MasonMBR.exe
"C:\Users\Admin\AppData\Roaming\MasonMBR.exe"
C:\Windows\system32\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2FF6.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | gstatic.com | udp |
| US | 8.8.8.8:53 | gstatic.com | udp |
Files
memory/2400-0-0x000007FEF60B3000-0x000007FEF60B4000-memory.dmp
memory/2400-1-0x0000000000C70000-0x0000000000C90000-memory.dmp
C:\Users\Admin\AppData\Roaming\MBR.exe
| MD5 | 9a1f6daccf2852fa1f2ec50491ab56d4 |
| SHA1 | 6ed12627343e7c617eee33b47b233065b89bd3a3 |
| SHA256 | 5adb0dfcd3a329385f1c631c443b6438d33a5679bf7384a4252895c04ccc9c70 |
| SHA512 | 9de85657f9a62bcb6768477da7cba74007e3366611f3b384710f68e8be2a69e8c0862e48412aa7d3e5c3ecab2e79faea14993fee42b771f10629b6625c90b87c |
C:\Users\Admin\AppData\Roaming\MasonMBR.exe
| MD5 | c2349cd4a8504c81b8b586a1180300d7 |
| SHA1 | d8e79516e0624dfc57440927fb6ddb0db8d2f1d6 |
| SHA256 | d1d1cf219e5da72d91b2371df9d5952106a67dd4d7dddbf5f6da254aa7e7070e |
| SHA512 | 5ec457bf5709ce42b87742d0305b72a887ce1abda2fed10378c3312d8b2a5a6c1b87e433faafe94f561da1d47a036ffa35d3e416f0a09ccba25129b7f954992e |
memory/2524-15-0x00000000003B0000-0x00000000003F0000-memory.dmp
memory/2572-14-0x0000000001020000-0x0000000001028000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp2FF6.tmp.bat
| MD5 | 4203f0c20f30efad1f63b60f9dd76552 |
| SHA1 | e880a462d62796c2252363a90e1f78a43878168d |
| SHA256 | 951dbdf1a3579368fd4ed5e670d17b6311f3ea1e0d052687435e3a6dc11331e4 |
| SHA512 | 9e0d038762e498278f4dd2634f1d5b41dc5f43a4fa14f64e7ef3e00d28d4cae9dd05b12a3a4411f080b6e4ebef1ca85b3a54ce1ba080e767ea7858c1f8bd6ea7 |
memory/2400-24-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp
memory/2400-25-0x000007FEF60B0000-0x000007FEF6A9C000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-22 19:21
Reported
2024-06-22 19:24
Platform
win10v2004-20240508-en
Max time kernel
147s
Max time network
150s
Command Line
Signatures
Detect Umbral payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Umbral
Detects Windows exceutables bypassing UAC using CMSTP utility, command line and INF
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Detects executables Discord URL observed in first stage droppers
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables attemping to enumerate video devices using WMI
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox analysis VM names
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox analysis VM usernames
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Detects executables containing possible sandbox system UUIDs
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\MBR.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\MasonMBR.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MBR = "C:\\Users\\Admin\\AppData\\Roaming\\MBR.exe" | C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MasonMBR = "C:\\Users\\Admin\\AppData\\Roaming\\MasonMBR.exe" | C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe | N/A |
Writes to the Master Boot Record (MBR)
| Description | Indicator | Process | Target |
| File opened for modification | \??\PhysicalDrive0 | C:\Users\Admin\AppData\Roaming\MasonMBR.exe | N/A |
Enumerates physical storage devices
Delays execution with timeout.exe
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\timeout.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\MBR.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe
"C:\Users\Admin\AppData\Local\Temp\2083f10b11097d67563cd88af575bd6aeb4d07fb0b016666058fd6c2072297db.exe"
C:\Users\Admin\AppData\Roaming\MBR.exe
"C:\Users\Admin\AppData\Roaming\MBR.exe"
C:\Users\Admin\AppData\Roaming\MasonMBR.exe
"C:\Users\Admin\AppData\Roaming\MasonMBR.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp52F2.tmp.bat""
C:\Windows\system32\timeout.exe
timeout 3
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | gstatic.com | udp |
| US | 8.8.8.8:53 | gstatic.com | udp |
| US | 8.8.8.8:53 | gstatic.com | udp |
Files
memory/4228-0-0x00007FFFEFE53000-0x00007FFFEFE55000-memory.dmp
memory/4228-1-0x0000000000520000-0x0000000000540000-memory.dmp
memory/4228-4-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp
C:\Users\Admin\AppData\Roaming\MBR.exe
| MD5 | 9a1f6daccf2852fa1f2ec50491ab56d4 |
| SHA1 | 6ed12627343e7c617eee33b47b233065b89bd3a3 |
| SHA256 | 5adb0dfcd3a329385f1c631c443b6438d33a5679bf7384a4252895c04ccc9c70 |
| SHA512 | 9de85657f9a62bcb6768477da7cba74007e3366611f3b384710f68e8be2a69e8c0862e48412aa7d3e5c3ecab2e79faea14993fee42b771f10629b6625c90b87c |
C:\Users\Admin\AppData\Roaming\MasonMBR.exe
| MD5 | c2349cd4a8504c81b8b586a1180300d7 |
| SHA1 | d8e79516e0624dfc57440927fb6ddb0db8d2f1d6 |
| SHA256 | d1d1cf219e5da72d91b2371df9d5952106a67dd4d7dddbf5f6da254aa7e7070e |
| SHA512 | 5ec457bf5709ce42b87742d0305b72a887ce1abda2fed10378c3312d8b2a5a6c1b87e433faafe94f561da1d47a036ffa35d3e416f0a09ccba25129b7f954992e |
memory/5040-24-0x000001E20C200000-0x000001E20C240000-memory.dmp
memory/2860-32-0x0000013F4BC40000-0x0000013F4BC48000-memory.dmp
memory/5040-31-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp
memory/4228-34-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp
memory/2860-35-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmp52F2.tmp.bat
| MD5 | 4cc283c0b194388d6494a3a8483aca63 |
| SHA1 | d8711491be0708fe076e517ad6b92f6f01912938 |
| SHA256 | 4c3757ad641d9d4ff1c74ec2550e3560172b7b83f3058e6eb070de2a3a58101e |
| SHA512 | dc95c055d9ee3bfcfd4b2aa858124752ada5611368b0a88991085fc76b5f1117900aa332e066c081e5eb94f9047dcc339f4bbb0b95ae07d70eb6fcfb2a0ec35d |
memory/5040-37-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp
memory/2860-38-0x00007FFFEFE50000-0x00007FFFF0911000-memory.dmp