Analysis Overview
SHA256
c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5
Threat Level: Known bad
The file c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5 was found to be: Known bad.
Malicious Activity Summary
Socks5Systemz
Detect Socks5Systemz Payload
Loads dropped DLL
Executes dropped EXE
Unexpected DNS network traffic destination
Checks installed software on the system
System Location Discovery: System Language Discovery
Unsigned PE
Suspicious behavior: EnumeratesProcesses
Suspicious use of FindShellTrayWindow
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-02 23:37
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-02 23:37
Reported
2024-08-02 23:39
Platform
win11-20240802-en
Max time kernel
142s
Max time network
127s
Command Line
Signatures
Detect Socks5Systemz Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Socks5Systemz
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Unexpected DNS network traffic destination
| Description | Indicator | Process | Target |
| Destination IP | 91.211.247.248 | N/A | N/A |
Checks installed software on the system
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\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe
"C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe"
C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp
"C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp" /SL5="$5030A,3984930,54272,C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe"
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| US | 150.171.27.10:443 | tse1.mm.bing.net | tcp |
| LT | 91.211.247.248:53 | bwiaghz.com | udp |
| CH | 185.196.8.214:80 | bwiaghz.com | tcp |
Files
memory/2904-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2904-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-1UO6M.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp
| MD5 | 849bb5c3439284a175f581ec281ca92e |
| SHA1 | 8bd0737eac1a74de4d62d66911ca7ed9f61cbc0f |
| SHA256 | 33a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206 |
| SHA512 | ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625 |
memory/2964-12-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-ELKHT.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
| MD5 | 8bcca4ad183014fe5a930cd349e523d2 |
| SHA1 | 5ca455d7e225d8bdb05bdf389f270b3b221affab |
| SHA256 | cd0f7ae7590fc5e32c02c178c91252e285d03b55374e5513c127cda5aeb45c1b |
| SHA512 | 2f580af96c856150845c3b64b26453ed9e556d8c92aef651c96cf1adadd4ad908a1cb500636c18a06bda3ae64cfaa50255e398e6a2250abe6a5feb26a128abcf |
memory/4116-54-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/4116-52-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/4116-56-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-59-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/2904-60-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2964-61-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/1780-62-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-65-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-66-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-69-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-72-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-75-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-78-0x00000000026E0000-0x0000000002782000-memory.dmp
memory/1780-80-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-85-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-88-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-91-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-94-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-97-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-100-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-104-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1780-107-0x0000000000400000-0x00000000008B2000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-02 23:37
Reported
2024-08-02 23:39
Platform
win10v2004-20240802-en
Max time kernel
142s
Max time network
125s
Command Line
Signatures
Detect Socks5Systemz Payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Socks5Systemz
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Unexpected DNS network traffic destination
| Description | Indicator | Process | Target |
| Destination IP | 141.98.234.31 | N/A | N/A |
Checks installed software on the system
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\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe
"C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe"
C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp
"C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp" /SL5="$601D6,3984930,54272,C:\Users\Admin\AppData\Local\Temp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.exe"
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -i
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
"C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe" -s
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 2.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 26.35.223.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 0.205.248.87.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 48.229.111.52.in-addr.arpa | udp |
| HK | 141.98.234.31:53 | eblmyqt.ua | udp |
| CH | 185.196.8.214:80 | eblmyqt.ua | tcp |
| US | 8.8.8.8:53 | 31.234.98.141.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 214.8.196.185.in-addr.arpa | udp |
Files
memory/3320-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3320-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-3VQ71.tmp\c91b5281a1c7d259ab877fffa3624075657b0c1d5313cd17f4a65995ebc6abb5.tmp
| MD5 | 849bb5c3439284a175f581ec281ca92e |
| SHA1 | 8bd0737eac1a74de4d62d66911ca7ed9f61cbc0f |
| SHA256 | 33a8f60e50240aecdbedc45922032025376ecccc0c1acbd44c82f12985e82206 |
| SHA512 | ac7bd629b6ed2595c6af4ef0737d7d801c8c35ebb4638ec2c19569511157a1543a6fa91d1a15708810865ece1cfb27367480754a7debf716d322d1eb59c5f625 |
memory/4956-12-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-FMIA0.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AC3Filter\ac3filter32_64.exe
| MD5 | 8bcca4ad183014fe5a930cd349e523d2 |
| SHA1 | 5ca455d7e225d8bdb05bdf389f270b3b221affab |
| SHA256 | cd0f7ae7590fc5e32c02c178c91252e285d03b55374e5513c127cda5aeb45c1b |
| SHA512 | 2f580af96c856150845c3b64b26453ed9e556d8c92aef651c96cf1adadd4ad908a1cb500636c18a06bda3ae64cfaa50255e398e6a2250abe6a5feb26a128abcf |
memory/4768-52-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/4768-53-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/4768-57-0x0000000000400000-0x000000000047F000-memory.dmp
memory/4768-56-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-60-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/3320-61-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4956-62-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/1116-63-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-66-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-69-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-72-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-75-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-78-0x0000000002AA0000-0x0000000002B42000-memory.dmp
memory/1116-80-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-85-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-88-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-91-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-94-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-97-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-100-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-104-0x0000000000400000-0x00000000008B2000-memory.dmp
memory/1116-107-0x0000000000400000-0x00000000008B2000-memory.dmp