Analysis Overview
SHA256
1c30611e8e3a99301ffe1102d4f70c44fd2d7593878dcdf4178002777fe6e920
Threat Level: Known bad
The file GreenField.docx was found to be: Known bad.
Malicious Activity Summary
Asyncrat family
AsyncRat
Command and Scripting Interpreter: PowerShell
Executes dropped EXE
Checks computer location settings
Legitimate hosting services abused for malware hosting/C2
Adds Run key to start application
Suspicious use of SetThreadContext
Drops file in Windows directory
Enumerates physical storage devices
System Location Discovery: System Language Discovery
Unsigned PE
Office loads VBA resources, possible macro or embedded object present
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: AddClipboardFormatListener
Suspicious use of SetWindowsHookEx
Opens file in notepad (likely ransom note)
Scheduled Task/Job: Scheduled Task
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-07 22:38
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-07 22:38
Reported
2024-11-07 22:41
Platform
win10v2004-20241007-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
AsyncRat
Asyncrat family
Command and Scripting Interpreter: PowerShell
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\PhotoBox.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\PhotoBox.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-940901362-3608833189-1915618603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MyProgram = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GreenField.exe" | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2736 set thread context of 4432 | N/A | C:\Users\Admin\AppData\Local\PhotoBox.exe | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe |
Enumerates physical storage devices
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\PhotoBox.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\schtasks.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | N/A |
Scheduled Task/Job: Scheduled Task
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\schtasks.exe | N/A |
Suspicious behavior: EnumeratesProcesses
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\PhotoBox.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\GreenField.exe
"C:\Users\Admin\AppData\Local\Temp\GreenField.exe"
C:\Users\Admin\AppData\Local\PhotoBox.exe
"C:\Users\Admin\AppData\Local\PhotoBox.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\PhotoBox.exe"
C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\YeANKIEIC.exe"
C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\YeANKIEIC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpCE28.tmp"
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | raw.githubusercontent.com | udp |
| US | 185.199.111.133:443 | raw.githubusercontent.com | tcp |
| US | 185.199.111.133:443 | raw.githubusercontent.com | tcp |
| US | 8.8.8.8:53 | github.com | udp |
| US | 185.199.111.133:443 | raw.githubusercontent.com | tcp |
| GB | 20.26.156.215:443 | github.com | tcp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.111.199.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 215.156.26.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 140.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 53.210.109.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 241.42.69.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| FR | 163.5.160.86:7707 | Nightmare15.strangled.net | tcp |
| US | 8.8.8.8:53 | 86.160.5.163.in-addr.arpa | udp |
| FR | 163.5.160.86:7707 | Nightmare15.strangled.net | tcp |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | udp |
Files
memory/4928-0-0x000000007506E000-0x000000007506F000-memory.dmp
memory/4928-1-0x0000000000790000-0x000000000079A000-memory.dmp
memory/4928-2-0x0000000075060000-0x0000000075810000-memory.dmp
C:\Users\Admin\AppData\Local\PhotoBox.exe
| MD5 | 8d8718cc95ecf6af196cc0c0eaac9ae2 |
| SHA1 | 0c822251da19e4f9f5a0b555d85fcf8813034b32 |
| SHA256 | 89d813e660f2438c15b502fe9cba3a61dd069a4f4fafded91feac3039731bdb4 |
| SHA512 | 98a74f1db9a7334f05327d871e7aa4e3b264d2cc36709df6e625edb79dde1e49a355b439fa7b72e6a5714a9c2e5b8807aa94aa137fee36c78388bbeeb9445114 |
memory/2736-15-0x00000000008D0000-0x0000000000956000-memory.dmp
memory/2736-16-0x0000000075060000-0x0000000075810000-memory.dmp
memory/2736-18-0x00000000051F0000-0x0000000005282000-memory.dmp
memory/2736-17-0x0000000005850000-0x0000000005DF4000-memory.dmp
memory/2736-19-0x0000000075060000-0x0000000075810000-memory.dmp
memory/2736-20-0x00000000052B0000-0x00000000052BA000-memory.dmp
memory/2736-21-0x00000000055C0000-0x00000000055D0000-memory.dmp
memory/2736-22-0x0000000006A70000-0x0000000006DC4000-memory.dmp
memory/4928-23-0x000000007506E000-0x000000007506F000-memory.dmp
memory/4928-24-0x0000000075060000-0x0000000075810000-memory.dmp
memory/2736-25-0x0000000075060000-0x0000000075810000-memory.dmp
memory/2736-26-0x0000000006DD0000-0x0000000006E28000-memory.dmp
memory/2736-27-0x0000000009480000-0x000000000951C000-memory.dmp
memory/4304-32-0x0000000004E70000-0x0000000004EA6000-memory.dmp
memory/4304-33-0x00000000054E0000-0x0000000005B08000-memory.dmp
memory/4304-34-0x0000000005460000-0x0000000005482000-memory.dmp
memory/4304-36-0x0000000005DB0000-0x0000000005E16000-memory.dmp
memory/4304-35-0x0000000005D40000-0x0000000005DA6000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\tmpCE28.tmp
| MD5 | aee3d98e03debec35fc772f0320bdc79 |
| SHA1 | 997b693af803291c2fc8fc5a91a9b4e077bb9672 |
| SHA256 | 8d0f3cf1e77dc6bdc7dd4391a2b5b52f051527d70ceed8c2c0e0dd9147914b6b |
| SHA512 | b8b5988b385559384acbf8e7c4406ac5aa77bbdb39ed7562dc6cfd04022ab08ac77862b68ebe0c24619166cb5358cd78fdea52bfd55dddcffbec1eaef13adf60 |
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tkdlcjvs.nvi.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/4432-57-0x0000000000400000-0x0000000000416000-memory.dmp
memory/2736-59-0x0000000075060000-0x0000000075810000-memory.dmp
memory/3872-60-0x0000000005C60000-0x0000000005C7E000-memory.dmp
memory/3872-61-0x0000000005CE0000-0x0000000005D2C000-memory.dmp
memory/3872-63-0x00000000706A0000-0x00000000706EC000-memory.dmp
memory/3872-62-0x0000000006E20000-0x0000000006E52000-memory.dmp
memory/3872-82-0x0000000006E00000-0x0000000006E1E000-memory.dmp
memory/4304-73-0x00000000706A0000-0x00000000706EC000-memory.dmp
memory/3872-84-0x0000000006E60000-0x0000000006F03000-memory.dmp
memory/3872-85-0x00000000075D0000-0x0000000007C4A000-memory.dmp
memory/4304-86-0x0000000007740000-0x000000000775A000-memory.dmp
memory/3872-87-0x0000000007000000-0x000000000700A000-memory.dmp
memory/3872-88-0x0000000007210000-0x00000000072A6000-memory.dmp
memory/4304-89-0x0000000007940000-0x0000000007951000-memory.dmp
memory/3872-90-0x00000000071C0000-0x00000000071CE000-memory.dmp
memory/3872-91-0x00000000071D0000-0x00000000071E4000-memory.dmp
memory/3872-92-0x00000000072D0000-0x00000000072EA000-memory.dmp
memory/3872-93-0x00000000072B0000-0x00000000072B8000-memory.dmp
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
| MD5 | 4d74b206fa181752dad4ffb4db26076c |
| SHA1 | 3c263c5e7de1c29e079eecd9bf72652f2bc1565c |
| SHA256 | ba77b0875465aa56eed758fb3a5a7ee6b0d3fa7ca34130cf1d3def7a1c1c1156 |
| SHA512 | c5326132c0f9a07e57d5113d4dce2facf2675ec148640e741505542da67d713fae4885315a4b919be54fac510ff3a106e3712b5ff3ec12517a6516620f0f9b4f |
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
| MD5 | 3d086a433708053f9bf9523e1d87a4e8 |
| SHA1 | b3ab5d4f282a4c8fe8c3005b8a557ed5a0e37f28 |
| SHA256 | 6f8fd1b8d9788ad54eaeee329232187e24b7b43393a01aeba2d6e9675231fb69 |
| SHA512 | 931ae42b4c68a4507ff2342332b08eb407050d47cf4176137ea022d0f6e513c689e998445a04c6d18d4877391705c586bfce0234632b898d41aaed0957996dfd |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-07 22:38
Reported
2024-11-07 22:41
Platform
win7-20240903-en
Max time kernel
119s
Max time network
120s
Command Line
Signatures
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyProgram = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GreenField.exe" | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\MyProgram = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GreenField.exe" | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
Legitimate hosting services abused for malware hosting/C2
| Description | Indicator | Process | Target |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
| N/A | raw.githubusercontent.com | N/A | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\Debug\WIA\wiatrace.log | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Office loads VBA resources, possible macro or embedded object present
Opens file in notepad (likely ransom note)
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\NOTEPAD.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Local\Temp\GreenField.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE | N/A |
Processes
C:\Users\Admin\AppData\Local\Temp\GreenField.exe
"C:\Users\Admin\AppData\Local\Temp\GreenField.exe"
C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
C:\Users\Admin\AppData\Local\Temp\GreenField.exe
"C:\Users\Admin\AppData\Local\Temp\GreenField.exe"
C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\GreenField.docx"
C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\WINWORD.EXE" /vu "C:\Users\Admin\AppData\Local\Temp\GreenField.docx"
C:\Windows\system32\NOTEPAD.EXE
"C:\Windows\system32\NOTEPAD.EXE" C:\Users\Admin\AppData\Local\Temp\GreenField.txt
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | raw.githubusercontent.com | udp |
| US | 185.199.111.133:443 | raw.githubusercontent.com | tcp |
| US | 8.8.8.8:53 | api.telegram.org | udp |
| NL | 149.154.167.220:443 | api.telegram.org | tcp |
| US | 185.199.111.133:443 | raw.githubusercontent.com | tcp |
| NL | 149.154.167.220:443 | api.telegram.org | tcp |
Files
memory/2660-0-0x000000007490E000-0x000000007490F000-memory.dmp
memory/2660-1-0x0000000000EC0000-0x0000000000ECA000-memory.dmp
memory/2660-2-0x0000000074900000-0x0000000074FEE000-memory.dmp
memory/2660-3-0x0000000074900000-0x0000000074FEE000-memory.dmp
memory/2924-4-0x00000000012E0000-0x00000000012EA000-memory.dmp
memory/2924-5-0x0000000074880000-0x0000000074F6E000-memory.dmp
memory/2924-6-0x0000000074880000-0x0000000074F6E000-memory.dmp
memory/1344-7-0x000000005FFF0000-0x0000000060000000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Templates\Normal.dotm
| MD5 | 01ec3a2e65e9398eb0727b7072da8e47 |
| SHA1 | 2d477148f7a7d46e80dc59b60f2096008a460d3c |
| SHA256 | 99fd266df4cc97db8373ad42c1ad9dbcf7d8b3bd34dc30ecfd91699ae2191a4d |
| SHA512 | fa7d55a81230c8dc32ecaa86e8dca5e5ab13e7791068c5ea759c06f65a6c07fc9eca43fee8283d41c4cdd9068bb4808d3352b68f467aede09d1fbc716cb65c9c |
memory/1344-26-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/1228-27-0x000000005FFF0000-0x0000000060000000-memory.dmp