Analysis Overview
SHA256
88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a
Threat Level: Known bad
The file 88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a was found to be: Known bad.
Malicious Activity Summary
Detect Socks5Systemz Payload
Socks5Systemz
Unexpected DNS network traffic destination
Executes dropped EXE
Loads dropped DLL
Checks installed software on the system
Unsigned PE
System Location Discovery: System Language Discovery
Suspicious use of WriteProcessMemory
Suspicious use of FindShellTrayWindow
Suspicious behavior: EnumeratesProcesses
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-08-11 00:35
Signatures
Unsigned PE
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-08-11 00:35
Reported
2024-08-11 00:38
Platform
win10v2004-20240802-en
Max time kernel
142s
Max time network
142s
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-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
"C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe"
C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
"C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp" /SL5="$902EE,4604514,54272,C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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 | 196.249.167.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 69.31.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 43.58.199.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 133.211.185.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 103.169.127.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 15.164.165.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 147.142.123.92.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 88.156.103.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 11.227.111.52.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 |
| HK | 141.98.234.31:53 | dtohqei.info | udp |
| CH | 185.196.8.214:80 | dtohqei.info | tcp |
| NL | 89.105.201.183:2023 | 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 |
| US | 8.8.8.8:53 | 183.201.105.89.in-addr.arpa | udp |
Files
memory/3200-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/3200-2-0x0000000000401000-0x000000000040B000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-VB154.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
C:\Users\Admin\AppData\Local\Temp\is-B61G4.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
memory/2136-14-0x0000000000400000-0x00000000004BD000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-B61G4.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | aa6119d0f0efcc955229c1696b17ef79 |
| SHA1 | 854c9ee06a6b422a883113d2b9099c7b4c13a475 |
| SHA256 | aa31c4972a1c6ee3fb24cc1cb3f5259f1f4cb3327b6fa23a1c7fe0b22906353c |
| SHA512 | 2aa64b484488bf95246271a062b5fa6e6faa4cfa97274cc377f12c8358fcbb18015f5218604c1ca4df7fd46ac65c7fa3fc80437865d8920d1c5fed8c51c74152 |
memory/856-58-0x0000000000400000-0x0000000000847000-memory.dmp
memory/856-59-0x0000000000400000-0x0000000000847000-memory.dmp
memory/856-63-0x0000000000400000-0x0000000000847000-memory.dmp
memory/856-60-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-66-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3200-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/2136-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/1764-69-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-72-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-75-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-78-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-81-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-84-0x0000000002B10000-0x0000000002BB2000-memory.dmp
memory/1764-88-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-91-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-94-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-97-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-100-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-103-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-106-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-107-0x0000000002B10000-0x0000000002BB2000-memory.dmp
memory/1764-108-0x0000000002B10000-0x0000000002BB2000-memory.dmp
memory/1764-112-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1764-115-0x0000000000400000-0x0000000000847000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-08-11 00:35
Reported
2024-08-11 00:38
Platform
win11-20240802-en
Max time kernel
141s
Max time network
148s
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-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
Suspicious use of FindShellTrayWindow
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp | N/A |
Suspicious use of WriteProcessMemory
Processes
C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe
"C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.exe"
C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
"C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp" /SL5="$90050,4604514,54272,C:\Users\Admin\AppData\Local\Temp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.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 | 17.160.190.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 240.221.184.93.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 | bbcxecx.com | udp |
| CH | 185.196.8.214:80 | bbcxecx.com | tcp |
Files
memory/4552-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4552-3-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-7F37T.tmp\88b1de75ca505a47864ac4934da81a5f3dd850188c272085c96c598bd17a378a.tmp
| MD5 | 85fc5b8836d8625fbfa40a092386e645 |
| SHA1 | a90bb83f5d8d024bb357a44682267a50406071d6 |
| SHA256 | 6dda4c9c34d1898b592ebeccee9f4b2a2bffefd68296da6310435e13fb63d950 |
| SHA512 | c50e53c2c695c7ba24b4cc2c2f958e1e9ce4eea9b541684ea41c7cae513919bb80171dcaaf1c18a8f37221737e6a1f8ba0881a224abd3dd09407d0c4edb96aae |
memory/4356-10-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
C:\Users\Admin\AppData\Local\Temp\is-KA7R5.tmp\_isetup\_iscrypt.dll
| MD5 | a69559718ab506675e907fe49deb71e9 |
| SHA1 | bc8f404ffdb1960b50c12ff9413c893b56f2e36f |
| SHA256 | 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc |
| SHA512 | e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63 |
C:\Users\Admin\AppData\Local\Temp\is-KA7R5.tmp\_isetup\_isdecmp.dll
| MD5 | a813d18268affd4763dde940246dc7e5 |
| SHA1 | c7366e1fd925c17cc6068001bd38eaef5b42852f |
| SHA256 | e19781aabe466dd8779cb9c8fa41bbb73375447066bb34e876cf388a6ed63c64 |
| SHA512 | b310ed4cd2e94381c00a6a370fcb7cc867ebe425d705b69caaaaffdafbab91f72d357966916053e72e68ecf712f2af7585500c58bb53ec3e1d539179fcb45fb4 |
C:\Users\Admin\AppData\Local\AVI Codec\avicodec32_64.exe
| MD5 | aa6119d0f0efcc955229c1696b17ef79 |
| SHA1 | 854c9ee06a6b422a883113d2b9099c7b4c13a475 |
| SHA256 | aa31c4972a1c6ee3fb24cc1cb3f5259f1f4cb3327b6fa23a1c7fe0b22906353c |
| SHA512 | 2aa64b484488bf95246271a062b5fa6e6faa4cfa97274cc377f12c8358fcbb18015f5218604c1ca4df7fd46ac65c7fa3fc80437865d8920d1c5fed8c51c74152 |
memory/1516-58-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1516-59-0x0000000000400000-0x0000000000847000-memory.dmp
memory/1516-61-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
memory/1516-63-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-66-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
memory/4552-67-0x0000000000400000-0x0000000000414000-memory.dmp
memory/4356-68-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/3404-69-0x0000000000400000-0x0000000000847000-memory.dmp
memory/4356-70-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
memory/3404-73-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-74-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-77-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-80-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-83-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-86-0x0000000000C10000-0x0000000000CB2000-memory.dmp
memory/3404-89-0x00007FF8F6A00000-0x00007FF8F6C09000-memory.dmp
memory/3404-88-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-94-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-97-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-100-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-103-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-106-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-109-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-113-0x0000000000400000-0x0000000000847000-memory.dmp
memory/3404-116-0x0000000000400000-0x0000000000847000-memory.dmp