Analysis Overview
SHA256
c8ea017dcccf11517e1f3c2f010b01080e3f55455df7e63f2bba31ebe03d7a94
Threat Level: Known bad
The file atlx.zip was found to be: Known bad.
Malicious Activity Summary
DcRat
DCRat payload
Dcrat family
DCRat payload
Disables Task Manager via registry modification
Loads dropped DLL
Checks computer location settings
Executes dropped EXE
Unsigned PE
Enumerates physical storage devices
Modifies registry class
Suspicious use of AdjustPrivilegeToken
Modifies registry key
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-06-20 21:46
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
2024-06-20 21:46
Reported
2024-06-20 21:48
Platform
win7-20240419-en
Max time kernel
43s
Max time network
20s
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 |
Disables Task Manager via registry modification
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\cmd.exe | N/A |
Enumerates physical storage devices
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe
"C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\PortcrtNet\qxDH4No15f3EsjB09ngd.vbe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Roaming\PortcrtNet\0zsSFhiVuyt57TfUIw.bat" "
C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe
"C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe"
C:\Windows\SysWOW64\reg.exe
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
Network
Files
C:\Users\Admin\AppData\Roaming\PortcrtNet\qxDH4No15f3EsjB09ngd.vbe
| MD5 | 92dd38b0aa7eb75f379921f0ce168d84 |
| SHA1 | 244553e896f3cf11b2afd05875b7b568ea670c1e |
| SHA256 | 9c88e1d45269af8c0e1dc3ed3c6314a74c539071534627413100b86e6b46780e |
| SHA512 | 5451dc7cf1d2ee45624aed72c62669b539c41e17c21a34205c8ef9bf629d38753fa2e1299e8b4c76da2bf4a47430b358a2a69e7aa04faa5a369883c5bdbb9b72 |
C:\Users\Admin\AppData\Roaming\PortcrtNet\0zsSFhiVuyt57TfUIw.bat
| MD5 | 3e5d70a529a6b9f3b21d4bb37da2f3a8 |
| SHA1 | 8f5a085af2469fec75a8cc6477cb9dbbeb499362 |
| SHA256 | 7ffb1337193c9f62799624f1662714eff09af1713febf3f4fdd573c4ed1f8098 |
| SHA512 | 6b100689cf9114cb071a791c488a84446f89eceea9faaf1e0a14fa7692310ca89c5662a30e3b80535217e21c6edd282a4ea4f4a2e8a19689c3968830ff669671 |
\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe
| MD5 | 84bd967d8484329937559675eae06444 |
| SHA1 | 0d631cdd75d15000278dcf2edcd5befd20d114f2 |
| SHA256 | 22c28d34d8b911554af1f1c0b8801f4212012f732ce306be489ebc439e490607 |
| SHA512 | 6a3746ed177ae55162d3706fb105c3da8712d34253524d62135fb7dc2dd8f29599190d31cb0ca0b1221ddeeb21ca6cf8b5d4ee9b5e34a6d26d0ccb2629ea962d |
memory/2692-13-0x0000000000DA0000-0x00000000010BE000-memory.dmp
memory/2692-14-0x00000000003D0000-0x00000000003DE000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-06-20 21:46
Reported
2024-06-20 21:47
Platform
win10v2004-20240611-en
Max time kernel
45s
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 |
Disables Task Manager via registry modification
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe | N/A |
| Key value queried | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000\Control Panel\International\Geo\Nation | C:\Windows\SysWOW64\WScript.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe | N/A |
Enumerates physical storage devices
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-200405930-3877336739-3533750831-1000_Classes\Local Settings | C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe | N/A |
Modifies registry key
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe
"C:\Users\Admin\AppData\Local\Temp\atlx\Avtronu.exe"
C:\Windows\SysWOW64\WScript.exe
"C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Roaming\PortcrtNet\qxDH4No15f3EsjB09ngd.vbe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\PortcrtNet\0zsSFhiVuyt57TfUIw.bat" "
C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe
"C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe"
C:\Windows\SysWOW64\reg.exe
reg add HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System /v DisableTaskMgr /t REG_DWORD /d 1 /f
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 | 95.221.229.192.in-addr.arpa | udp |
| NL | 23.62.61.97:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 10.28.171.150.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 20.42.73.26:443 | tcp | |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 92.12.20.2.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 203.197.79.204.in-addr.arpa | udp |
Files
C:\Users\Admin\AppData\Roaming\PortcrtNet\qxDH4No15f3EsjB09ngd.vbe
| MD5 | 92dd38b0aa7eb75f379921f0ce168d84 |
| SHA1 | 244553e896f3cf11b2afd05875b7b568ea670c1e |
| SHA256 | 9c88e1d45269af8c0e1dc3ed3c6314a74c539071534627413100b86e6b46780e |
| SHA512 | 5451dc7cf1d2ee45624aed72c62669b539c41e17c21a34205c8ef9bf629d38753fa2e1299e8b4c76da2bf4a47430b358a2a69e7aa04faa5a369883c5bdbb9b72 |
C:\Users\Admin\AppData\Roaming\PortcrtNet\0zsSFhiVuyt57TfUIw.bat
| MD5 | 3e5d70a529a6b9f3b21d4bb37da2f3a8 |
| SHA1 | 8f5a085af2469fec75a8cc6477cb9dbbeb499362 |
| SHA256 | 7ffb1337193c9f62799624f1662714eff09af1713febf3f4fdd573c4ed1f8098 |
| SHA512 | 6b100689cf9114cb071a791c488a84446f89eceea9faaf1e0a14fa7692310ca89c5662a30e3b80535217e21c6edd282a4ea4f4a2e8a19689c3968830ff669671 |
C:\Users\Admin\AppData\Roaming\PortcrtNet\Crtdll.exe
| MD5 | 84bd967d8484329937559675eae06444 |
| SHA1 | 0d631cdd75d15000278dcf2edcd5befd20d114f2 |
| SHA256 | 22c28d34d8b911554af1f1c0b8801f4212012f732ce306be489ebc439e490607 |
| SHA512 | 6a3746ed177ae55162d3706fb105c3da8712d34253524d62135fb7dc2dd8f29599190d31cb0ca0b1221ddeeb21ca6cf8b5d4ee9b5e34a6d26d0ccb2629ea962d |
memory/2680-12-0x00007FFE589B3000-0x00007FFE589B5000-memory.dmp
memory/2680-13-0x00000000002D0000-0x00000000005EE000-memory.dmp
memory/2680-14-0x000000001B0E0000-0x000000001B0EE000-memory.dmp