Analysis Overview
SHA256
fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3
Threat Level: Known bad
The file fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe was found to be: Known bad.
Malicious Activity Summary
ModiLoader, DBatLoader
ModiLoader Second Stage
Checks computer location settings
Loads dropped DLL
Executes dropped EXE
UPX packed file
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-05-24 11:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-24 11:33
Reported
2024-05-24 11:36
Platform
win7-20240419-en
Max time kernel
149s
Max time network
153s
Command Line
Signatures
ModiLoader, DBatLoader
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:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
Loads dropped DLL
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-481678230-3773327859-3495911762-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2256 set thread context of 56364 | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe |
| PID 56992 set thread context of 140168 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 56992 set thread context of 140244 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\AYMNI.bat" "
C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | billabong0911.no-ip.biz | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| US | 8.8.8.8:53 | billabong0911.no-ip.biz | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
Files
memory/2256-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2256-3-0x0000000000270000-0x0000000000271000-memory.dmp
memory/56364-73916-0x0000000000400000-0x000000000040B000-memory.dmp
memory/56364-73918-0x0000000000400000-0x000000000040B000-memory.dmp
memory/56364-73922-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/56364-73920-0x0000000000400000-0x000000000040B000-memory.dmp
memory/56364-73923-0x0000000000400000-0x000000000040B000-memory.dmp
memory/56364-73925-0x0000000000400000-0x000000000040B000-memory.dmp
memory/56364-73924-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\AYMNI.bat
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
memory/56364-73939-0x0000000000400000-0x000000000040B000-memory.dmp
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | a739c4fbfb3443acc565e6e22cc9af54 |
| SHA1 | 48732b2556c64742145e7e3d3da18d18ff34e294 |
| SHA256 | 836ea7f64b349bc928843f02e9f2eb750d2c7b2a3d2c7cdd020d40fac314a4f6 |
| SHA512 | 981948062c72654384e49c73d62f185138751df27489f2674a11846794373079025ce62e30244a3d32067d2d99416f33dd969188110f6cb64cc5f7e3da2b4ac1 |
memory/56992-73966-0x0000000000400000-0x0000000000453000-memory.dmp
memory/56364-111247-0x0000000000400000-0x000000000040B000-memory.dmp
memory/140244-147838-0x0000000000400000-0x0000000000414000-memory.dmp
memory/56364-147843-0x0000000000400000-0x000000000040B000-memory.dmp
memory/140168-147849-0x0000000000400000-0x000000000040B000-memory.dmp
memory/140244-147850-0x0000000000400000-0x0000000000414000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-24 11:33
Reported
2024-05-24 11:36
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
ModiLoader, DBatLoader
ModiLoader Second Stage
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| 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-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | N/A |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe" | C:\Windows\SysWOW64\reg.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1632 set thread context of 4888 | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe |
| PID 4984 set thread context of 4352 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 4984 set thread context of 5080 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
Enumerates physical storage devices
Suspicious use of AdjustPrivilegeToken
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe
"C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\KAVSR.bat" "
C:\Windows\SysWOW64\reg.exe
REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 58.55.71.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| NL | 23.62.61.57:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.61.62.23.in-addr.arpa | udp |
| NL | 23.62.61.57:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | billabong0911.no-ip.biz | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 45.19.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong0911.no-ip.biz | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | udp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| US | 204.79.197.200:443 | tse1.mm.bing.net | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
Files
memory/1632-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1632-3-0x0000000002910000-0x0000000002911000-memory.dmp
memory/4888-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1632-8-0x0000000002930000-0x0000000002931000-memory.dmp
memory/4888-10-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1632-7-0x0000000002920000-0x0000000002921000-memory.dmp
memory/4888-9-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\KAVSR.txt
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | 7790d0a7690b1ae87f290ef6531f1d79 |
| SHA1 | 331a023c77e9e5818182fcf2866a20ba0891abe2 |
| SHA256 | 3ce22555f131bfb34f20b8157d75d2e38403fdf51110d8fb8ad1b30985adb9ec |
| SHA512 | 3eb98455cfa43ca2d39f9aff4648a9fc0c785df604926c2f10a59b1dcc3db42d99edcc765389b3266fb89ce90d3c7c6fa0842d3a34f041a75d8f3d4a5b281d73 |
memory/4984-34-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4984-37-0x0000000000400000-0x0000000000453000-memory.dmp
memory/5080-41-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4984-46-0x0000000000400000-0x0000000000453000-memory.dmp
memory/5080-47-0x0000000000400000-0x0000000000414000-memory.dmp
memory/5080-50-0x0000000000400000-0x0000000000414000-memory.dmp
memory/5080-52-0x0000000000400000-0x0000000000414000-memory.dmp
memory/5080-51-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4888-53-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4352-55-0x0000000000400000-0x000000000040B000-memory.dmp
memory/5080-56-0x0000000000400000-0x0000000000414000-memory.dmp