Analysis Overview
SHA256
1f596e6501e1d95c29f80c9bbb4303746be62877626b558044b1f1421c1abf25
Threat Level: Known bad
The file 11042024_2103_11042024_099920918271827.zip was found to be: Known bad.
Malicious Activity Summary
Remcos
ModiLoader, DBatLoader
ModiLoader Second Stage
Executes dropped EXE
Adds Run key to start application
Drops file in System32 directory
Program crash
Unsigned PE
Suspicious use of FindShellTrayWindow
Suspicious use of SendNotifyMessage
Modifies registry class
Suspicious use of WriteProcessMemory
Script User-Agent
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-11 13:04
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-11 13:04
Reported
2024-04-11 13:06
Platform
win7-20240221-en
Max time kernel
130s
Max time network
133s
Command Line
Signatures
ModiLoader, DBatLoader
ModiLoader Second Stage
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Program crash
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\WerFault.exe | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 1612 wrote to memory of 2696 | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1612 wrote to memory of 2696 | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1612 wrote to memory of 2696 | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | C:\Windows\SysWOW64\WerFault.exe |
| PID 1612 wrote to memory of 2696 | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | C:\Windows\SysWOW64\WerFault.exe |
Processes
C:\Users\Admin\AppData\Local\Temp\099920918271827.exe
"C:\Users\Admin\AppData\Local\Temp\099920918271827.exe"
C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1612 -s 720
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | onedrive.live.com | udp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
Files
memory/1612-0-0x0000000000220000-0x0000000000221000-memory.dmp
memory/1612-1-0x0000000002DD0000-0x0000000003DD0000-memory.dmp
memory/1612-2-0x0000000002DD0000-0x0000000003DD0000-memory.dmp
memory/1612-4-0x0000000000220000-0x0000000000221000-memory.dmp
memory/1612-5-0x0000000000400000-0x00000000004F3000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-11 13:04
Reported
2024-04-11 13:06
Platform
win10v2004-20240226-en
Max time kernel
92s
Max time network
119s
Command Line
Signatures
ModiLoader, DBatLoader
Remcos
ModiLoader Second Stage
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\skype\sjype.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Otmdfowz = "C:\\Users\\Public\\Otmdfowz.url" | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-399997616-3400990511-967324271-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rmc-H3YHZ8 = "\"C:\\Windows\\SysWOW64\\skype\\sjype.exe\"" | C:\Windows\SysWOW64\SndVol.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Rmc-H3YHZ8 = "\"C:\\Windows\\SysWOW64\\skype\\sjype.exe\"" | C:\Windows\SysWOW64\SndVol.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\skype\sjype.exe | C:\Windows\SysWOW64\SndVol.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\skype | C:\Windows\SysWOW64\SndVol.exe | N/A |
| File created | C:\Windows\SysWOW64\skype\sjype.exe | C:\Windows\SysWOW64\SndVol.exe | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\ | C:\Windows\SysWOW64\SndVol.exe | N/A |
Script User-Agent
| Description | Indicator | Process | Target |
| HTTP User-Agent header | Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) | N/A | N/A |
| HTTP User-Agent header | Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) | N/A | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\099920918271827.exe | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\SndVol.exe | N/A |
Suspicious use of SendNotifyMessage
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\SndVol.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\SndVol.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\099920918271827.exe
"C:\Users\Admin\AppData\Local\Temp\099920918271827.exe"
C:\Windows\SysWOW64\extrac32.exe
C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\099920918271827.exe C:\\Users\\Public\\Libraries\\Otmdfowz.PIF
C:\Windows\SysWOW64\SndVol.exe
C:\Windows\System32\SndVol.exe
C:\Windows\SysWOW64\skype\sjype.exe
"C:\Windows\SysWOW64\skype\sjype.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 249.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | onedrive.live.com | udp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
| US | 8.8.8.8:53 | a4yt7w.bn.files.1drv.com | udp |
| US | 13.107.42.12:443 | a4yt7w.bn.files.1drv.com | tcp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 12.42.107.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.137.107.13.in-addr.arpa | udp |
| US | 13.107.137.11:443 | onedrive.live.com | tcp |
| US | 8.8.8.8:53 | 26.165.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.139.73.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 14.227.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
Files
memory/2400-0-0x00000000009D0000-0x00000000009D1000-memory.dmp
memory/2400-1-0x00000000028C0000-0x00000000038C0000-memory.dmp
memory/2400-2-0x00000000028C0000-0x00000000038C0000-memory.dmp
memory/2400-4-0x0000000000400000-0x00000000004F3000-memory.dmp
memory/5048-10-0x0000000002F20000-0x0000000003F20000-memory.dmp
memory/5048-11-0x0000000000400000-0x0000000000482000-memory.dmp
C:\Windows\SysWOW64\skype\sjype.exe
| MD5 | 5ac83d3d18f9b6e1c5b78bd712661524 |
| SHA1 | 9ee22c8038e47a4935aeac113d3f2ee6f03a22c4 |
| SHA256 | d68ddc4be84705357288ba972939aa9aa5f95537ebc059c3ff3ccaae11638fca |
| SHA512 | 2fc37b27836a4f0a4c61a5cd976e7452120585b86a615cce25108737337a9a02b73cc68c92b26fbb89a5cadbf3033ad0b6355cc5b7094f18318e3dbea1b84082 |
memory/5048-72-0x0000000002F20000-0x0000000003F20000-memory.dmp
memory/5048-73-0x0000000000400000-0x0000000000482000-memory.dmp