Analysis Overview
SHA256
fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3
Threat Level: Known bad
The file fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3 was found to be: Known bad.
Malicious Activity Summary
ModiLoader, DBatLoader
Detects Windows executables referencing non-Windows User-Agents
UPX dump on OEP (original entry point)
ModiLoader Second Stage
Checks computer location settings
Executes dropped EXE
Loads dropped DLL
UPX packed file
Adds Run key to start application
Suspicious use of SetThreadContext
Enumerates physical storage devices
Unsigned PE
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 05:41
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-24 05:41
Reported
2024-05-24 05:44
Platform
win7-20240215-en
Max time kernel
148s
Max time network
147s
Command Line
Signatures
ModiLoader, DBatLoader
Detects Windows executables referencing non-Windows User-Agents
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
ModiLoader Second Stage
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
UPX dump on OEP (original entry point)
| 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 |
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 |
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| 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-1-5-21-2248906074-2862704502-246302768-1000\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 2364 set thread context of 153596 | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe |
| PID 62524 set thread context of 101580 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 62524 set thread context of 101488 | 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\PLKXE.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/2364-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2364-3-0x0000000000230000-0x0000000000231000-memory.dmp
memory/153596-73920-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-73918-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-73916-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-73922-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/153596-73923-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-73924-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-73925-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\PLKXE.bat
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | c27b5c626c70ddec4b8d49bfa1e9e867 |
| SHA1 | 898182f0172a0223680c1a036401b62275d72eab |
| SHA256 | a1d00a8d57dabbcee263695264a8c5f7b007c9c0ed9607a82e1d7d40e9924377 |
| SHA512 | dd8dd932bbf688a569c7ba1d2c366d225d4cb7581737434d3afa4a3c8e299fe9bea9890e5319fe60f0b55d0cb50ba40ee02cb90733d6dedc2b6505de5e4ca628 |
memory/62524-73965-0x0000000000400000-0x0000000000453000-memory.dmp
memory/153596-111941-0x0000000000400000-0x000000000040B000-memory.dmp
memory/101488-147835-0x0000000000400000-0x0000000000414000-memory.dmp
memory/101580-147834-0x0000000000400000-0x000000000040B000-memory.dmp
memory/153596-147845-0x0000000000400000-0x000000000040B000-memory.dmp
memory/101580-147850-0x0000000000400000-0x000000000040B000-memory.dmp
memory/101488-147851-0x0000000000400000-0x0000000000414000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-24 05:41
Reported
2024-05-24 05:44
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
150s
Command Line
Signatures
ModiLoader, DBatLoader
Detects Windows executables referencing non-Windows User-Agents
| 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 |
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 |
UPX dump on OEP (original entry point)
| 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 |
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| N/A | N/A | N/A | N/A |
Checks computer location settings
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\USER\S-1-5-21-4018855536-2201274732-320770143-1000\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 |
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| 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-1-5-21-4018855536-2201274732-320770143-1000\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 4880 set thread context of 4816 | N/A | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe | C:\Users\Admin\AppData\Local\Temp\fc55c1c684b552734e49e0787964cdff9daeff2270dc05a09d7ce6994cdc66f3.exe |
| PID 3512 set thread context of 3228 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 3512 set thread context of 3104 | 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\RDAEH.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 | 28.118.140.52.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 | 23.62.61.194:443 | www.bing.com | tcp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 134.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 194.61.62.23.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 57.169.31.20.in-addr.arpa | udp |
| NL | 23.62.61.194:443 | 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 |
| US | 8.8.8.8:53 | 241.150.49.20.in-addr.arpa | udp |
| FR | 78.159.135.230:1337 | billabong0911.no-ip.biz | tcp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.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 | 98.58.20.217.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 | 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 |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | 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 | 17.173.189.20.in-addr.arpa | udp |
Files
memory/4880-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4880-3-0x0000000002A30000-0x0000000002A31000-memory.dmp
memory/4816-6-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4816-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4816-7-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4816-10-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\RDAEH.txt
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | 5a3b6a07677c949baa9d391532cb6a21 |
| SHA1 | 4b6a73b62273afe83daf01c4af6f8cd0cefc1087 |
| SHA256 | ed58aeffaf895c2ee356f395ce623c1c52803107dec4466ca95be8fc94f3254c |
| SHA512 | e0c336fa89748671e3687534521118c1c5349ac7761f07b0127b850b6b405fb323b5c71c2b9fed635b578b6023e24efafbd1d1d5e11582ea3b0bea013520fe28 |
memory/3512-32-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3512-35-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3104-39-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3512-44-0x0000000000400000-0x0000000000453000-memory.dmp
memory/3104-48-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3104-50-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3104-49-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3104-46-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4816-53-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3228-54-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3104-55-0x0000000000400000-0x0000000000414000-memory.dmp