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
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
Modifies WinLogon
Enumerates connected drives
Suspicious use of SetThreadContext
Drops file in System32 directory
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-09-01 12:27
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-09-01 12:27
Reported
2024-09-01 12:29
Platform
win7-20240704-en
Max time kernel
118s
Max time network
119s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\service124.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\service124.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-1-5-21-3450744190-3404161390-554719085-1000\Software\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service124.exe" | C:\Windows\SysWOW64\service124.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service124.exe" | C:\Windows\SysWOW64\service124.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\D: | C:\Windows\SysWOW64\service124.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\SysWOW64\service124.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\\service124.exe" | C:\Windows\SysWOW64\service124.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File created | C:\Windows\SysWOW64\service124.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| File opened for modification | C:\Windows\SysWOW64\service124.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 2900 set thread context of 2552 | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe |
| PID 3056 set thread context of 2312 | N/A | C:\Windows\SysWOW64\service124.exe | C:\Windows\SysWOW64\service124.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service124.exe | N/A |
| 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:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service124.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\service124.exe
-n
C:\Windows\SysWOW64\service124.exe
-n
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | v2z.imageshak.biz | udp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | 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/2900-0-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2552-1-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2900-10-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2552-9-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-7-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-5-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-12-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-13-0x0000000000400000-0x000000000040B000-memory.dmp
\Windows\SysWOW64\service124.exe
| MD5 | c7501c5118971f1ee4e86372b8963310 |
| SHA1 | c7a5bf459c452e0d22ca14b7b3e5696f40fb4b48 |
| SHA256 | a49043714c414f0680f9ee25dd807f73549ae2385a60604d9bc8b59fe19e4ce6 |
| SHA512 | 4b26a3ce4bc4b4e931c2f46a7100aaea3cb3514d043add6fb771c4ef625f65f2b5e03e1b6f3b121f308e0a29ea26197aed2be83414c0a1c07c14e771f87653c9 |
memory/2552-25-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-26-0x0000000000270000-0x0000000000287000-memory.dmp
memory/3056-28-0x0000000000400000-0x0000000000417000-memory.dmp
memory/3056-41-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2312-43-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2312-44-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2552-46-0x0000000000270000-0x0000000000287000-memory.dmp
memory/2312-47-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2312-54-0x0000000000400000-0x000000000040B000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-09-01 12:27
Reported
2024-09-01 12:29
Platform
win10v2004-20240802-en
Max time kernel
116s
Max time network
119s
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 |
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Windows\SysWOW64\service213.exe | N/A |
| N/A | N/A | C:\Windows\SysWOW64\service213.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-355097885-2402257403-2971294179-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service213.exe" | C:\Windows\SysWOW64\service213.exe | N/A |
| Set value (str) | \REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Adobe Reader Speed Launcher = "C:\\Windows\\SysWOW64\\service213.exe" | C:\Windows\SysWOW64\service213.exe | N/A |
Enumerates connected drives
| Description | Indicator | Process | Target |
| File opened (read-only) | \??\D: | C:\Windows\SysWOW64\service213.exe | N/A |
| File opened (read-only) | \??\F: | C:\Windows\SysWOW64\service213.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\\service213.exe" | C:\Windows\SysWOW64\service213.exe | N/A |
Drops file in System32 directory
| Description | Indicator | Process | Target |
| File opened for modification | C:\Windows\SysWOW64\service213.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
| File created | C:\Windows\SysWOW64\service213.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | N/A |
Suspicious use of SetThreadContext
| Description | Indicator | Process | Target |
| PID 1032 set thread context of 2120 | N/A | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe | C:\Users\Admin\AppData\Local\Temp\c7501c5118971f1ee4e86372b8963310N.exe |
| PID 4848 set thread context of 4244 | N/A | C:\Windows\SysWOW64\service213.exe | C:\Windows\SysWOW64\service213.exe |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service213.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Windows\SysWOW64\service213.exe | N/A |
| 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:\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\service213.exe
-n
C:\Windows\SysWOW64\service213.exe
-n
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 67.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| 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 |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 56.126.166.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| 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 |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.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 | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.28.10:443 | tse1.mm.bing.net | tcp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
| DE | 178.162.217.107:2040 | v2z.imageshak.biz | tcp |
Files
memory/1032-0-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2120-1-0x0000000000400000-0x000000000040B000-memory.dmp
memory/1032-3-0x0000000000400000-0x0000000000417000-memory.dmp
memory/2120-4-0x0000000000400000-0x000000000040B000-memory.dmp
memory/2120-5-0x0000000000400000-0x000000000040B000-memory.dmp
C:\Windows\SysWOW64\service213.exe
| MD5 | c7501c5118971f1ee4e86372b8963310 |
| SHA1 | c7a5bf459c452e0d22ca14b7b3e5696f40fb4b48 |
| SHA256 | a49043714c414f0680f9ee25dd807f73549ae2385a60604d9bc8b59fe19e4ce6 |
| SHA512 | 4b26a3ce4bc4b4e931c2f46a7100aaea3cb3514d043add6fb771c4ef625f65f2b5e03e1b6f3b121f308e0a29ea26197aed2be83414c0a1c07c14e771f87653c9 |
memory/2120-10-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4848-16-0x0000000000400000-0x0000000000417000-memory.dmp
memory/4244-18-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4244-21-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4244-20-0x0000000000400000-0x000000000040B000-memory.dmp
memory/4244-23-0x0000000000400000-0x000000000040B000-memory.dmp