Analysis Overview
SHA256
a49043714c414f0680f9ee25dd807f73549ae2385a60604d9bc8b59fe19e4ce6
Threat Level: Known bad
The file c7501c5118971f1ee4e86372b8963310N.exe was found to be: Known bad.
Malicious Activity Summary
Expiro, m0yv
Expiro payload
Loads dropped DLL
Executes dropped EXE
Enumerates connected drives
Modifies WinLogon
Adds Run key to start application
Drops file in System32 directory
Suspicious use of SetThreadContext
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-02 11:33
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-02 11:33
Reported
2024-09-02 11:35
Platform
win7-20240704-en
Max time kernel
114s
Max time network
113s
Command Line
Signatures
Expiro, m0yv
Expiro payload
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\service199.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\service199.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3294248377-1418901787-4083263181-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service199.exe" | C:\Windows\SysWOW64\service199.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service199.exe" | C:\Windows\SysWOW64\service199.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\D: | C:\Windows\SysWOW64\service199.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\SysWOW64\service199.exe | N/A |
Modifies WinLogon
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service199.exe" | C:\Windows\SysWOW64\service199.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\service199.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| File created | C:\Windows\SysWOW64\service199.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 3008 set thread context of 2360 | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe |
| PID 2816 set thread context of 2808 | N/A | C:\Windows\SysWOW64\service199.exe | C:\Windows\SysWOW64\service199.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service199.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service199.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe
"C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe"
C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe
"C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe"
C:\Windows\SysWOW64\service199.exe
-n
C:\Windows\SysWOW64\service199.exe
-n
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | v2z.imageshak.biz | udp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.203.226:2040 | v2z.imageshak.biz | tcp |
| US | 8.8.8.8:53 | v2z.imageshak.biz | udp |
| NL | 85.17.31.82:2040 | v2z.imageshak.biz | tcp |
| NL | 85.17.31.82:2040 | v2z.imageshak.biz | tcp |
| NL | 85.17.31.82:2040 | v2z.imageshak.biz | tcp |
| NL | 85.17.31.82:2040 | v2z.imageshak.biz | tcp |
| NL | 85.17.31.82:2040 | v2z.imageshak.biz | tcp |
Files
memory/3008-0-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2360-1-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3008-3-0x0000000000240000-0x0000000000257000-memory.dmp
memory/2360-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/3008-11-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2360-10-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2360-8-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2360-6-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2360-13-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2360-14-0x0000000000400000-0x000000000040B000-memory.dmp
\Windows\SysWOW64\service199.exe
| MD5 | c7501c5118971f1ee4e86372b8963310 |
| SHA1 | c7a5bf459c452e0d22ca14b7b3e5696f40fb4b48 |
| SHA256 | a49043714c414f0680f9ee25dd807f73549ae2385a60604d9bc8b59fe19e4ce6 |
| SHA512 | 4b26a3ce4bc4b4e931c2f46a7100aaea3cb3514d043add6fb771c4ef625f65f2b5e03e1b6f3b121f308e0a29ea26197aed2be83414c0a1c07c14e771f87653c9 |
memory/2816-28-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2360-26-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2816-40-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2808-43-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2808-44-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2808-46-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2808-52-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2808-55-0x0000000000400000-0x000000000040B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-02 11:33
Reported
2024-09-02 11:35
Platform
win10v2004-20240802-en
Max time kernel
115s
Max time network
116s
Command Line
Signatures
Expiro, m0yv
Expiro payload
| 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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\service187.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\service187.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-523280732-2327480845-3730041215-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service187.exe" | C:\Windows\SysWOW64\service187.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service187.exe" | C:\Windows\SysWOW64\service187.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\D: | C:\Windows\SysWOW64\service187.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\SysWOW64\service187.exe | N/A |
Modifies WinLogon
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service187.exe" | C:\Windows\SysWOW64\service187.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\service187.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| File created | C:\Windows\SysWOW64\service187.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 4208 set thread context of 1036 | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe |
| PID 1956 set thread context of 4824 | N/A | C:\Windows\SysWOW64\service187.exe | C:\Windows\SysWOW64\service187.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service187.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service187.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe
"C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe"
C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe
"C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe"
C:\Windows\SysWOW64\service187.exe
-n
C:\Windows\SysWOW64\service187.exe
-n
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 232.168.11.51.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 71.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | v2z.imageshak.biz | udp |
| NL | 5.79.71.205:2040 | v2z.imageshak.biz | tcp |
| US | 8.8.8.8:53 | 205.71.79.5.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 86.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 206.23.85.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | v2z.imageshak.biz | udp |
| NL | 5.79.71.205:2040 | v2z.imageshak.biz | tcp |
| US | 8.8.8.8:53 | 19.229.111.52.in-addr.arpa | udp |
Files
memory/4208-0-0x0000000000400000-0x0000000000417000-memory.dmp
memory/1036-1-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4208-3-0x0000000000400000-0x0000000000417000-memory.dmp
memory/1036-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1036-5-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Windows\SysWOW64\service187.exe
| MD5 | c7501c5118971f1ee4e86372b8963310 |
| SHA1 | c7a5bf459c452e0d22ca14b7b3e5696f40fb4b48 |
| SHA256 | a49043714c414f0680f9ee25dd807f73549ae2385a60604d9bc8b59fe19e4ce6 |
| SHA512 | 4b26a3ce4bc4b4e931c2f46a7100aaea3cb3514d043add6fb771c4ef625f65f2b5e03e1b6f3b121f308e0a29ea26197aed2be83414c0a1c07c14e771f87653c9 |
memory/1036-9-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1956-17-0x0000000000400000-0x0000000000417000-memory.dmp
memory/4824-18-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4824-19-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4824-20-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4824-22-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4824-28-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4824-29-0x0000000000400000-0x000000000040B000-memory.dmp