Analysis Overview
SHA256
9bcbc863c3859f0014142f9b338f8cfd80a835e50206ab52c1fcb8c8c25563dc
Threat Level: Known bad
The file 488f8d9de535475e4a901c033199ea0c.bin was found to be: Known bad.
Malicious Activity Summary
ModiLoader, DBatLoader
Remcos
ModiLoader Second Stage
Loads dropped DLL
Executes dropped EXE
Adds Run key to start application
Enumerates physical storage devices
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Script User-Agent
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-04-05 01:14
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-04-05 01:14
Reported
2024-04-05 01:17
Platform
win7-20240221-en
Max time kernel
162s
Max time network
182s
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 \System32\4095750.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\Uajcyryw = "C:\\Users\\Public\\Uajcyryw.url" | C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe | N/A |
Enumerates physical storage devices
Script User-Agent
| Description | Indicator | Process | Target |
| HTTP User-Agent header | Mozilla/4.0 (compatible; Win32; WinHttp.WinHttpRequest.5) | N/A | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe
"C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows "
C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows \System32"
C:\Windows\SysWOW64\cmd.exe
cmd /c "C:\Windows \System32\4095750.exe"
C:\Windows \System32\4095750.exe
"C:\Windows \System32\4095750.exe"
C:\Windows\SysWOW64\extrac32.exe
C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe C:\\Users\\Public\\Libraries\\Uajcyryw.PIF
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2017.filemail.com | udp |
| GB | 50.7.154.234:443 | 2017.filemail.com | tcp |
| GB | 50.7.154.234:443 | 2017.filemail.com | tcp |
| US | 8.8.8.8:53 | officerem.duckdns.org | udp |
| N/A | 127.0.0.1:47212 | tcp | |
| US | 23.95.235.29:47212 | officerem.duckdns.org | tcp |
| US | 8.8.8.8:53 | geoplugin.net | udp |
| NL | 178.237.33.50:80 | geoplugin.net | tcp |
Files
memory/1964-0-0x0000000000220000-0x0000000000221000-memory.dmp
memory/1964-1-0x0000000002D80000-0x0000000003D80000-memory.dmp
memory/1964-2-0x0000000002D80000-0x0000000003D80000-memory.dmp
memory/1964-4-0x0000000000220000-0x0000000000221000-memory.dmp
memory/1964-5-0x0000000000400000-0x00000000005AF000-memory.dmp
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015
| MD5 | 29f65ba8e88c063813cc50a4ea544e93 |
| SHA1 | 05a7040d5c127e68c25d81cc51271ffb8bef3568 |
| SHA256 | 1ed81fa8dfb6999a9fedc6e779138ffd99568992e22d300acd181a6d2c8de184 |
| SHA512 | e29b2e92c496245bed3372578074407e8ef8882906ce10c35b3c8deebfefe01b5fd7f3030acaa693e175f4b7aca6cd7d8d10ae1c731b09c5fa19035e005de3aa |
C:\Users\Admin\AppData\Local\Temp\TarFA2E.tmp
| MD5 | 435a9ac180383f9fa094131b173a2f7b |
| SHA1 | 76944ea657a9db94f9a4bef38f88c46ed4166983 |
| SHA256 | 67dc37ed50b8e63272b49a254a6039ee225974f1d767bb83eb1fd80e759a7c34 |
| SHA512 | 1a6b277611959720a9c71114957620517ad94541302f164eb872bd322292a952409bafb8bc2ac793b16ad5f25d83f8594ccff2b7834e3c2b2b941e6fc84c009a |
C:\Windows \System32\4095750.exe
| MD5 | 231ce1e1d7d98b44371ffff407d68b59 |
| SHA1 | 25510d0f6353dbf0c9f72fc880de7585e34b28ff |
| SHA256 | 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96 |
| SHA512 | 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612 |
memory/948-63-0x0000000001F90000-0x0000000001F91000-memory.dmp
memory/1964-65-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/948-69-0x0000000001F90000-0x0000000001F91000-memory.dmp
memory/1964-71-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-78-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-79-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-86-0x0000000015A90000-0x0000000016A90000-memory.dmp
C:\ProgramData\remcos\logs.dat
| MD5 | ee93ac8b164928823526b28b0adc8c8e |
| SHA1 | 45b9a99b2547177fd4f2b81072085fd299809d60 |
| SHA256 | 1665e110a6f5164f584a68a62016705a8de160d04e1d19e05f900df6eaf48d90 |
| SHA512 | c6b8d4026ea8b13ce3a8fc709b57499dfb1c3049da1a13bd060421b5ccc1a0c5014a2d74485814a56f3403cc84d20cbdcf10f34f357142cec4967877e1da66fd |
memory/1964-89-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-90-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-96-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-98-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-97-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-108-0x0000000015A90000-0x0000000016A90000-memory.dmp
memory/1964-109-0x0000000015A90000-0x0000000016A90000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-04-05 01:14
Reported
2024-04-05 01:17
Platform
win10v2004-20240226-en
Max time kernel
171s
Max time network
179s
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 \System32\7390817.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows \System32\7390817.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-609813121-2907144057-1731107329-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Uajcyryw = "C:\\Users\\Public\\Uajcyryw.url" | C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.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 |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
| N/A | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe
"C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows "
C:\Windows\SysWOW64\cmd.exe
cmd /c mkdir "\\?\C:\Windows \System32"
C:\Windows\SysWOW64\cmd.exe
cmd /c "C:\Windows \System32\7390817.exe"
C:\Windows \System32\7390817.exe
"C:\Windows \System32\7390817.exe"
C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\windows \system32\KDECO.bat""
C:\Windows\system32\cmd.exe
cmd /c powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
C:\Windows\SysWOW64\extrac32.exe
C:\\Windows\\System32\\extrac32.exe /C /Y C:\Users\Admin\AppData\Local\Temp\67f61357cf2d027bb18929c72aae2e8427ed0ddb7c16e4265855b8d827d95518.exe C:\\Users\\Public\\Libraries\\Uajcyryw.PIF
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 24.66.18.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 2017.filemail.com | udp |
| GB | 50.7.154.234:443 | 2017.filemail.com | tcp |
| GB | 50.7.154.234:443 | 2017.filemail.com | tcp |
| US | 8.8.8.8:53 | 234.154.7.50.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 217.106.137.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 97.17.167.52.in-addr.arpa | udp |
| N/A | 127.0.0.1:47212 | tcp | |
| US | 8.8.8.8:53 | officerem.duckdns.org | udp |
| US | 23.95.235.29:47212 | officerem.duckdns.org | tcp |
| US | 8.8.8.8:53 | 29.235.95.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | geoplugin.net | udp |
| NL | 178.237.33.50:80 | geoplugin.net | tcp |
| US | 8.8.8.8:53 | 50.33.237.178.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 218.110.86.104.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.193.132.51.in-addr.arpa | udp |
Files
memory/3220-0-0x0000000000C70000-0x0000000000C71000-memory.dmp
memory/3220-1-0x0000000002A50000-0x0000000003A50000-memory.dmp
memory/3220-2-0x0000000002A50000-0x0000000003A50000-memory.dmp
memory/3220-4-0x0000000000400000-0x00000000005AF000-memory.dmp
C:\Windows \System32\7390817.exe
| MD5 | 231ce1e1d7d98b44371ffff407d68b59 |
| SHA1 | 25510d0f6353dbf0c9f72fc880de7585e34b28ff |
| SHA256 | 30951db8bfc21640645aa9144cfeaa294bb7c6980ef236d28552b6f4f3f92a96 |
| SHA512 | 520887b01bda96b7c4f91b9330a5c03a12f7c7f266d4359432e7bacc76b0eef377c05a4361f8fa80ad0b94b5865699d747a5d94a2d3dcdb85dabf5887bb6c612 |
C:\Windows \System32\netutils.dll
| MD5 | 8541304aadba4ae8620bb2699f6e0437 |
| SHA1 | e0b28a6ecd32d3789433217364c1006de9892df8 |
| SHA256 | 50573c81e5773c13a5411e8446d7fb17956865675782239818f7affd40a2fecb |
| SHA512 | c18b1233c138229705242e1cdc00970e45e414d8da9c643b1196ec9de261ae18076e22bed6fcc48c07d1f0e851469db9147f083f3c3c76a26b75994419392455 |
memory/2752-16-0x00000000613C0000-0x00000000613E3000-memory.dmp
C:\windows \system32\KDECO.bat
| MD5 | c545650595b479c81ad6b9d8882aae39 |
| SHA1 | 7a98aa2e6eee23b3c1bba876955d525bc618b3f0 |
| SHA256 | a3a80983cb33159f0455fa0135789402558baa1460db94d0071318512b8cb5f9 |
| SHA512 | 85ac596a7da9072a28c4178e4fdedc98f1b49c8e3fe5612cfe464833297b13f65d2dc59b52d7fc9970cff8f98d954111229aec0ed9dded454e03b0cf4ebb6ff3 |
memory/1636-18-0x000001CD07A20000-0x000001CD07A42000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k12thkf3.1zd.ps1
| MD5 | d17fe0a3f47be24a6453e9ef58c94641 |
| SHA1 | 6ab83620379fc69f80c0242105ddffd7d98d5d9d |
| SHA256 | 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7 |
| SHA512 | 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82 |
memory/1636-28-0x00007FFD49770000-0x00007FFD4A231000-memory.dmp
memory/1636-30-0x000001CD1FAF0000-0x000001CD1FB00000-memory.dmp
memory/1636-29-0x000001CD1FAF0000-0x000001CD1FB00000-memory.dmp
memory/1636-33-0x00007FFD49770000-0x00007FFD4A231000-memory.dmp
memory/3220-40-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-42-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-43-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-44-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-45-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-47-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-50-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-51-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-52-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-53-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-54-0x0000000015400000-0x0000000016400000-memory.dmp
C:\ProgramData\remcos\logs.dat
| MD5 | 33511f224b8937a45b6ecc20baacc605 |
| SHA1 | cbc05f20372e468e304abfa56887281434f43dd1 |
| SHA256 | c5dccc148704c51aa48cc75c2e88d5d02a78bddcd4f9ea44c09142c779c4b2ff |
| SHA512 | ebd6578c4c117d69f2c4cfe4973e75413125d29fde8b65ad33107dcc1ce5f6ee9a616fce1c0efb999636cce14d701da5a63f2553ac49491517480d648ae4175c |
memory/3220-66-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-67-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-77-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-78-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-88-0x0000000015400000-0x0000000016400000-memory.dmp
memory/3220-89-0x0000000015400000-0x0000000016400000-memory.dmp