Analysis Overview
SHA256
28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f
Threat Level: Known bad
The file 28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f was found to be: Known bad.
Malicious Activity Summary
Socks5Systemz
Detect Socks5Systemz Payload
Executes dropped EXE
Unexpected DNS network traffic destination
Loads dropped DLL
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
2024-08-11 01:07
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-11 01:07
Reported
2024-08-11 01:10
Platform
win11-20240802-en
Max time kernel
147s
Max time network
156s
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-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
Loads dropped DLL
Unexpected DNS network traffic destination
| Description | Indicator | Process | Target |
| Destination IP | 45.155.250.90 | 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\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
"C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"
C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
"C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp" /SL5="$8027A,4429287,54272,C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s
Network
| Country | Destination | Domain | Proto |
| US | 52.111.227.13:443 | tcp | |
| US | 8.8.8.8:53 | 43.229.111.52.in-addr.arpa | udp |
| SE | 45.155.250.90:53 | aqfqehd.ru | udp |
| CH | 185.196.8.214:80 | aqfqehd.ru | tcp |
Files
memory/4844-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4844-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-8LC6G.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
memory/4408-12-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-5ECLO.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
C:\Users\Admin\AppData\Local\Temp\is-5ECLO.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | 02377a6a0b0563f5fa84491d1c8336ad |
| SHA1 | b8c0486ce1382170d8bae609d940bbcb45122694 |
| SHA256 | 3fc21a22c88ebe5c547901169e5406157dd629af27f8d833bb493f2cd633a3a0 |
| SHA512 | b2cb8e50903e41e4c74e95e5c2bf7cddc5dbcbf402b134eba334449f26b26d82325da826c6a6b5beb2e956606eff885d84b0419d208d4201a19b6fce0a37f43d |
memory/4612-58-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-60-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-62-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4612-61-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-65-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4844-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4408-67-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3196-68-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-71-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-74-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-77-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-80-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-82-0x0000000002A70000-0x0000000002B12000-memory.dmp
memory/3196-85-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-90-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-93-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-96-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-99-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-102-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-105-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-109-0x0000000000400000-0x0000000000815000-memory.dmp
memory/3196-112-0x0000000000400000-0x0000000000815000-memory.dmp
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-11 01:07
Reported
2024-08-11 01:10
Platform
win10v2004-20240802-en
Max time kernel
144s
Max time network
139s
Command Line
Signatures
Detect Socks5Systemz 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 |
Socks5Systemz
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
Loads dropped DLL
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\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe
"C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"
C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
"C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp" /SL5="$60114,4429287,54272,C:\Users\Admin\AppData\Local\Temp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.exe"
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -i
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
"C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe" -s
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | 8.8.8.8.in-addr.arpa | udp |
| US | 8.8.8.8:53 | g.bing.com | udp |
| US | 204.79.197.237:443 | g.bing.com | tcp |
| US | 8.8.8.8:53 | 237.197.79.204.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.210.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 50.23.12.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 198.187.3.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 172.214.232.199.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.229.111.52.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 | 55.36.223.20.in-addr.arpa | udp |
| HK | 141.98.234.31:53 | bpsxsus.com | udp |
| US | 8.8.8.8:53 | 31.234.98.141.in-addr.arpa | udp |
| CH | 185.196.8.214:80 | bpsxsus.com | tcp |
| NL | 89.105.201.183:2023 | tcp | |
| US | 8.8.8.8:53 | 183.201.105.89.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 214.8.196.185.in-addr.arpa | udp |
Files
memory/4852-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4852-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-TEKQH.tmp\28271a653c234b312cefd6e8c0a06756b7c5c3f75784904bf18dc5e6a34ef10f.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
memory/3424-10-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-99L5H.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
C:\Users\Admin\AppData\Local\Temp\is-99L5H.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | 02377a6a0b0563f5fa84491d1c8336ad |
| SHA1 | b8c0486ce1382170d8bae609d940bbcb45122694 |
| SHA256 | 3fc21a22c88ebe5c547901169e5406157dd629af27f8d833bb493f2cd633a3a0 |
| SHA512 | b2cb8e50903e41e4c74e95e5c2bf7cddc5dbcbf402b134eba334449f26b26d82325da826c6a6b5beb2e956606eff885d84b0419d208d4201a19b6fce0a37f43d |
memory/4952-58-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4952-61-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4952-63-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4952-59-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4852-66-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3424-67-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4636-68-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-71-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-74-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-77-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-80-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-83-0x00000000029C0000-0x0000000002A62000-memory.dmp
memory/4636-85-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-90-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-93-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-96-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-99-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-102-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-105-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-106-0x00000000029C0000-0x0000000002A62000-memory.dmp
memory/4636-107-0x00000000029C0000-0x0000000002A62000-memory.dmp
memory/4636-111-0x0000000000400000-0x0000000000815000-memory.dmp
memory/4636-114-0x0000000000400000-0x0000000000815000-memory.dmp