Analysis Overview
SHA256
8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b
Threat Level: Known bad
The file 8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b 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
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
Suspicious use of WriteProcessMemory
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-10 20:22
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-10 20:22
Reported
2024-08-10 20:25
Platform
win10v2004-20240802-en
Max time kernel
146s
Max time network
134s
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-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 | 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\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
"C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe"
C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
"C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp" /SL5="$502EC,4588230,54272,C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 | 28.118.140.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.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 | 64.159.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 95.221.229.192.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 13.86.106.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 157.123.68.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 205.47.74.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 29.243.111.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | tse1.mm.bing.net | 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 |
| US | 8.8.8.8:53 | 58.99.105.20.in-addr.arpa | udp |
| LT | 91.211.247.248:53 | cspilbt.net | udp |
| CH | 185.196.8.214:80 | cspilbt.net | tcp |
| NL | 45.156.23.96:2023 | tcp | |
| US | 8.8.8.8:53 | 214.8.196.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 96.23.156.45.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 248.247.211.91.in-addr.arpa | udp |
Files
memory/1620-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1620-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-P7FTS.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
C:\Users\Admin\AppData\Local\Temp\is-L4KCS.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
C:\Users\Admin\AppData\Local\Temp\is-L4KCS.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
memory/3340-19-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | 2ff96fc8212a5ea6781036c03d92bf66 |
| SHA1 | cfd302f29766e9801b7e858d4257defc26e70de3 |
| SHA256 | 684ee3dbb9a2997433acaa9d878e5e48ad585f0ac0d19fbcb5ff05caf47e0087 |
| SHA512 | 26f4c894ef2dee24ccac4a535e05272ecec6a94249582514a5b19d69327b687305b224c092e4d9667e92f8979e213873b51e789413cf87935d84ed1eff3e6ab0 |
memory/2204-58-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2204-60-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2204-59-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2204-63-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-66-0x0000000000400000-0x0000000000844000-memory.dmp
memory/1620-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3340-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3196-69-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-72-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-75-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-78-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-81-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-83-0x0000000002A80000-0x0000000002B22000-memory.dmp
memory/3196-86-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-91-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-94-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-97-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-100-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-103-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-106-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-108-0x0000000002A80000-0x0000000002B22000-memory.dmp
memory/3196-107-0x0000000002A80000-0x0000000002B22000-memory.dmp
memory/3196-112-0x0000000000400000-0x0000000000844000-memory.dmp
memory/3196-115-0x0000000000400000-0x0000000000844000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-10 20:22
Reported
2024-08-10 20:25
Platform
win11-20240802-en
Max time kernel
141s
Max time network
133s
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-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 | 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\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe
"C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.exe"
C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
"C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp" /SL5="$60068,4588230,54272,C:\Users\Admin\AppData\Local\Temp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.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 |
| LT | 91.211.247.248:53 | bvoklmb.com | udp |
| CH | 185.196.8.214:80 | bvoklmb.com | tcp |
| US | 8.8.8.8:53 | 214.8.196.185.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 248.247.211.91.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 81.144.22.2.in-addr.arpa | 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 |
Files
memory/1872-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1872-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-HU1K1.tmp\8aff50e7ca55466a7adeeb48f973421fbbf98ec0d2c3e133325fffcef512033b.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
memory/2024-10-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-UKTV8.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
C:\Users\Admin\AppData\Local\Temp\is-UKTV8.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | 2ff96fc8212a5ea6781036c03d92bf66 |
| SHA1 | cfd302f29766e9801b7e858d4257defc26e70de3 |
| SHA256 | 684ee3dbb9a2997433acaa9d878e5e48ad585f0ac0d19fbcb5ff05caf47e0087 |
| SHA512 | 26f4c894ef2dee24ccac4a535e05272ecec6a94249582514a5b19d69327b687305b224c092e4d9667e92f8979e213873b51e789413cf87935d84ed1eff3e6ab0 |
memory/1236-58-0x0000000000400000-0x0000000000844000-memory.dmp
memory/1236-63-0x0000000000400000-0x0000000000844000-memory.dmp
memory/1236-62-0x0000000000400000-0x000000000047E000-memory.dmp
memory/1236-60-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-66-0x0000000000400000-0x0000000000844000-memory.dmp
memory/1872-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2024-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/2100-69-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-70-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-73-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-76-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-79-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-82-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-83-0x0000000000BE0000-0x0000000000C82000-memory.dmp
memory/2100-88-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-93-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-96-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-99-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-102-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-105-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-108-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-112-0x0000000000400000-0x0000000000844000-memory.dmp
memory/2100-115-0x0000000000400000-0x0000000000844000-memory.dmp