Analysis Overview
SHA256
8f93a1789a69a36ef8c45597bd0b7d15d535474355dbbcebc29cdeccc22d18a9
Threat Level: Known bad
The file virussign.com_f3fb433643992f5349291c65fa8b9940.vir was found to be: Known bad.
Malicious Activity Summary
ModiLoader, DBatLoader
ModiLoader Second Stage
Executes dropped EXE
UPX packed file
Loads dropped DLL
Checks computer location settings
Adds Run key to start application
Suspicious use of SetThreadContext
Unsigned PE
Enumerates physical storage devices
Suspicious use of WriteProcessMemory
Suspicious use of SetWindowsHookEx
Suspicious use of AdjustPrivilegeToken
MITRE ATT&CK Matrix V13
Analysis: static1
Detonation Overview
Reported
2024-05-28 17:55
Signatures
UPX packed file
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-05-28 17:55
Reported
2024-05-28 17:57
Platform
win10v2004-20240426-en
Max time kernel
149s
Max time network
151s
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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.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 |
| 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-1-5-21-711569230-3659488422-571408806-1000\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 968 set thread context of 2104 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe |
| PID 4628 set thread context of 3876 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 4628 set thread context of 720 | 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\virussign.com_f3fb433643992f5349291c65fa8b9940.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.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\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\RQDLC.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 | 149.220.183.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.197.17.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | 98.58.20.217.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | 21.236.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | billabong4102.no-ip.biz | udp |
| US | 8.8.8.8:53 | 214.143.182.52.in-addr.arpa | udp |
Files
memory/968-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/968-3-0x00000000021C0000-0x00000000021C2000-memory.dmp
memory/2104-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2104-6-0x0000000000400000-0x000000000040B000-memory.dmp
memory/968-9-0x00000000021F0000-0x00000000021F2000-memory.dmp
memory/968-8-0x00000000021E0000-0x00000000021E2000-memory.dmp
memory/968-7-0x00000000021D0000-0x00000000021D2000-memory.dmp
memory/968-12-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2104-11-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\RQDLC.txt
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | c9037dee7bd2defec66c3e4c9cbc6748 |
| SHA1 | e4f30f81bebb15d6fa57c0d04f68b07374e1a5c1 |
| SHA256 | e52f5a01b0322dc8459e1ffa8654fa0c3e88fd9f51de27f99c3b7e9a27f7a64c |
| SHA512 | 7c663bf3cb5be6e53568cf9295ad6ec4678495819d08517d2b22856d9186560125829d53edd72fa870e69da35a27fccdd9ac1e84bfcfd9c916403f4bb419405d |
memory/4628-35-0x0000000000400000-0x0000000000453000-memory.dmp
memory/4628-41-0x0000000000400000-0x0000000000453000-memory.dmp
memory/720-45-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4628-51-0x0000000000400000-0x0000000000453000-memory.dmp
memory/720-52-0x0000000000400000-0x0000000000414000-memory.dmp
memory/720-53-0x0000000000400000-0x0000000000414000-memory.dmp
memory/720-57-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2104-56-0x0000000000400000-0x000000000040B000-memory.dmp
memory/720-58-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3876-59-0x0000000000400000-0x000000000040B000-memory.dmp
memory/720-60-0x0000000000400000-0x0000000000414000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-05-28 17:55
Reported
2024-05-28 17:57
Platform
win7-20240221-en
Max time kernel
149s
Max time network
118s
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 |
| 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-1-5-21-1298544033-3225604241-2703760938-1000\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 1460 set thread context of 2348 | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe |
| PID 1076 set thread context of 2276 | N/A | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe | C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe |
| PID 1076 set thread context of 2044 | 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\virussign.com_f3fb433643992f5349291c65fa8b9940.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.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\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe
"C:\Users\Admin\AppData\Local\Temp\virussign.com_f3fb433643992f5349291c65fa8b9940.exe"
C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\BEPQM.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 | billabong4102.no-ip.biz | udp |
Files
memory/1460-0-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-5-0x0000000000230000-0x0000000000231000-memory.dmp
memory/1460-3-0x0000000000230000-0x0000000000231000-memory.dmp
memory/1460-15-0x0000000000260000-0x0000000000261000-memory.dmp
memory/1460-27-0x0000000000300000-0x0000000000301000-memory.dmp
memory/1460-39-0x0000000000320000-0x0000000000321000-memory.dmp
memory/1460-70-0x0000000000380000-0x0000000000381000-memory.dmp
memory/1460-60-0x0000000000360000-0x0000000000361000-memory.dmp
memory/1460-56-0x0000000000404000-0x0000000000405000-memory.dmp
memory/1460-82-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-80-0x00000000003E0000-0x00000000003E2000-memory.dmp
memory/1460-92-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-88-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-79-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-78-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1460-93-0x0000000002540000-0x0000000002593000-memory.dmp
memory/2348-94-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2348-98-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2348-108-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2348-107-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1460-106-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2348-105-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2348-102-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2348-100-0x000000007EFDE000-0x000000007EFDF000-memory.dmp
memory/2348-96-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\BEPQM.bat
| MD5 | 4eb61ec7816c34ec8c125acadc57ec1b |
| SHA1 | b0015cc865c0bb1a027be663027d3829401a31cc |
| SHA256 | 08375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff |
| SHA512 | f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1 |
\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe
| MD5 | 125ca1b38be8dc7634c91b99ad31aee4 |
| SHA1 | 777aaf28a42e45f34eee03ffd80c7971f626e216 |
| SHA256 | 3bd1347fdb47582a4374c5d6727d86b31025ce60e3dc8f5b147c7a055666834e |
| SHA512 | 798d1205f9dcbf40cd804672d3d55c02baed295775d7466faf388cf88e520b4aa17c2b1580b0caf68bff6c74bf930bb75d70fa514bfce593fb7db49f4351a4ec |
memory/2348-149-0x0000000003470000-0x00000000034C3000-memory.dmp
memory/2348-148-0x0000000003470000-0x00000000034C3000-memory.dmp
memory/1076-151-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2348-147-0x0000000003470000-0x00000000034C3000-memory.dmp
memory/1076-156-0x0000000000240000-0x0000000000241000-memory.dmp
memory/1076-166-0x0000000000260000-0x0000000000261000-memory.dmp
memory/1076-211-0x0000000000400000-0x0000000000453000-memory.dmp
memory/1076-177-0x00000000002C0000-0x00000000002C1000-memory.dmp
memory/2044-245-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1076-250-0x0000000000400000-0x0000000000453000-memory.dmp
memory/2348-255-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2276-260-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2044-261-0x0000000000400000-0x0000000000414000-memory.dmp