Analysis Overview
SHA256
6c25b3a1603cb5d0225cde1d8c854e160442c9603dd34e9b506e164f465277e0
Threat Level: Known bad
The file DCRatBuild.exe was found to be: Known bad.
Malicious Activity Summary
DcRat
DCRat payload
Dcrat family
DCRat payload
Checks computer location settings
Executes dropped EXE
Drops file in Windows directory
Enumerates physical storage devices
Unsigned PE
Suspicious use of AdjustPrivilegeToken
Suspicious behavior: EnumeratesProcesses
Modifies registry class
Suspicious use of FindShellTrayWindow
Checks SCSI registry key(s)
Suspicious use of WriteProcessMemory
Suspicious use of SendNotifyMessage
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-18 20:19
Signatures
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Dcrat family
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-06-18 20:19
Reported
2024-06-18 20:22
Platform
win10-20240404-en
Max time kernel
134s
Max time network
135s
Command Line
Signatures
DcRat
DCRat payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\WinRAR\UnZiper.exe | N/A |
Drops file in Windows directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\rescache\_merged\4183903823\2290032291.pri | C:\Windows\system32\taskmgr.exe | N/A |
| File created | C:\Windows\rescache\_merged\1601268389\715946058.pri | C:\Windows\system32\taskmgr.exe | N/A |
Enumerates physical storage devices
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_QEMU&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-160447019-1232603106-4168707212-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\WinRAR\UnZiper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 4880 wrote to memory of 4644 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 4880 wrote to memory of 4644 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 4880 wrote to memory of 4644 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 4644 wrote to memory of 3884 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4644 wrote to memory of 3884 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 4644 wrote to memory of 3884 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 3884 wrote to memory of 604 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\WinRAR\UnZiper.exe |
| PID 3884 wrote to memory of 604 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\WinRAR\UnZiper.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\WinRAR\YkeJnObjHU0HW.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\WinRAR\EuV3EgG3NUbxxVyQ5LebkwF.bat" "
C:\WinRAR\UnZiper.exe
"C:\WinRAR\UnZiper.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
Network
| Country | Destination | Domain | Proto |
| US | 52.111.229.48:443 | tcp | |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 79.239.69.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
Files
C:\WinRAR\YkeJnObjHU0HW.vbe
| MD5 | 17adb25ce5d01e14572fd62850edf87c |
| SHA1 | f84c29ecb7fa20277ad972d4eedfd64b2b4af4f0 |
| SHA256 | 0dddccc3fa9217e5ccb8b90ee48355f6fda21e30ba6328200094bdc08946d721 |
| SHA512 | 4f56f93e9e67f5cbb252bf3eb2bf4be20bcad61a8c169559fd5b23cc5c011cbe698967e2bc31822589c162f3cf57b84df88af3106a0854e5497068b77f760788 |
C:\WinRAR\EuV3EgG3NUbxxVyQ5LebkwF.bat
| MD5 | cbad1e030a37190ced948f45d7582691 |
| SHA1 | b1590dc4a67cd1b56b6b0ff42d48325de7bb8ea5 |
| SHA256 | 8d910a7da0bc8d3baf495648cc0fef5391e8d7486cfc027827d3828a488f7571 |
| SHA512 | ce98091245080506c15afd1eba8847e410b43c689ef38b4c971881a0888588cbac39234d73f783ad4f4f113c7fe07d066d4f5e1a2181854b70a032f4308fca92 |
C:\WinRAR\UnZiper.exe
| MD5 | e905ff8081ad6f509f87ed641f5a562c |
| SHA1 | af469385f6d20bc0d3203cff45fca5e7b0f06f35 |
| SHA256 | d980da73db67be61910358462d836bf998fda13855d41b6651792c293f0147a4 |
| SHA512 | 9ff7b1024865e159ee14a9e43150c422c820c5290aaa710ef04c26e3a514dda41b62afe8a3c8a2bdf1130ce1faf0063f4184b2981b2fcc3853fb948f5e88da55 |
memory/604-14-0x0000000000DB0000-0x0000000000F82000-memory.dmp
memory/604-15-0x000000001BA60000-0x000000001BA6E000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-18 20:19
Reported
2024-06-18 20:22
Platform
win10v2004-20240508-en
Max time kernel
63s
Max time network
51s
Command Line
Signatures
DcRat
DCRat payload
| 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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\WinRAR\UnZiper.exe | N/A |
Enumerates physical storage devices
Checks SCSI registry key(s)
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000 | C:\Windows\system32\taskmgr.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A | C:\Windows\system32\taskmgr.exe | N/A |
| Key value queried | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_DADY&Prod_HARDDISK\4&215468a5&0&000000\FriendlyName | C:\Windows\system32\taskmgr.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| N/A | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\WinRAR\UnZiper.exe | N/A |
| Token: SeDebugPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeSystemProfilePrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeCreateGlobalPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: 33 | N/A | C:\Windows\system32\taskmgr.exe | N/A |
| Token: SeIncBasePriorityPrivilege | N/A | C:\Windows\system32\taskmgr.exe | N/A |
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2372 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 2372 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 2372 wrote to memory of 2200 | N/A | C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe | C:\Windows\SysWOW64\WScript.exe |
| PID 2200 wrote to memory of 2720 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2200 wrote to memory of 2720 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2200 wrote to memory of 2720 | N/A | C:\Windows\SysWOW64\WScript.exe | C:\Windows\SysWOW64\cmd.exe |
| PID 2720 wrote to memory of 2012 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\WinRAR\UnZiper.exe |
| PID 2720 wrote to memory of 2012 | N/A | C:\Windows\SysWOW64\cmd.exe | C:\WinRAR\UnZiper.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe
"C:\Users\Admin\AppData\Local\Temp\DCRatBuild.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\WinRAR\YkeJnObjHU0HW.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\WinRAR\EuV3EgG3NUbxxVyQ5LebkwF.bat" "
C:\WinRAR\UnZiper.exe
"C:\WinRAR\UnZiper.exe"
C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
Files
C:\WinRAR\YkeJnObjHU0HW.vbe
| MD5 | 17adb25ce5d01e14572fd62850edf87c |
| SHA1 | f84c29ecb7fa20277ad972d4eedfd64b2b4af4f0 |
| SHA256 | 0dddccc3fa9217e5ccb8b90ee48355f6fda21e30ba6328200094bdc08946d721 |
| SHA512 | 4f56f93e9e67f5cbb252bf3eb2bf4be20bcad61a8c169559fd5b23cc5c011cbe698967e2bc31822589c162f3cf57b84df88af3106a0854e5497068b77f760788 |
C:\WinRAR\EuV3EgG3NUbxxVyQ5LebkwF.bat
| MD5 | cbad1e030a37190ced948f45d7582691 |
| SHA1 | b1590dc4a67cd1b56b6b0ff42d48325de7bb8ea5 |
| SHA256 | 8d910a7da0bc8d3baf495648cc0fef5391e8d7486cfc027827d3828a488f7571 |
| SHA512 | ce98091245080506c15afd1eba8847e410b43c689ef38b4c971881a0888588cbac39234d73f783ad4f4f113c7fe07d066d4f5e1a2181854b70a032f4308fca92 |
C:\WinRAR\UnZiper.exe
| MD5 | e905ff8081ad6f509f87ed641f5a562c |
| SHA1 | af469385f6d20bc0d3203cff45fca5e7b0f06f35 |
| SHA256 | d980da73db67be61910358462d836bf998fda13855d41b6651792c293f0147a4 |
| SHA512 | 9ff7b1024865e159ee14a9e43150c422c820c5290aaa710ef04c26e3a514dda41b62afe8a3c8a2bdf1130ce1faf0063f4184b2981b2fcc3853fb948f5e88da55 |
memory/2012-12-0x00007FF8E3793000-0x00007FF8E3795000-memory.dmp
memory/2012-13-0x0000000000D60000-0x0000000000F32000-memory.dmp
memory/2012-14-0x0000000003000000-0x000000000300E000-memory.dmp
memory/3492-16-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-17-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-18-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-28-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-27-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-26-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-25-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-24-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-23-0x0000019A4C390000-0x0000019A4C391000-memory.dmp
memory/3492-22-0x0000019A4C390000-0x0000019A4C391000-memory.dmp