Analysis
- max time kernel
292s - max time network
256s - platform
windows10-1703_x64 - resource
win10-20240404-en - resource tags
- submitted
01/08/2024, 22:37
General
- Target 5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.exe
- Size 4.2MB
- Sample240801-2j5akavarg
- SHA256 5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52
Malware Config
Signatures
- Detect Socks5Systemz Payload 1 IoCs
- Socks5Systemz
Socks5Systemz is a botnet written in C++.
- Executes dropped EXE 3 IoCs
- Loads dropped DLL 3 IoCs
- Unexpected DNS network traffic destination 1 IoCs
Network traffic to other servers than the configured DNS servers was detected on the DNS port.
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- System Location Discovery: System Language Discovery 1 TTPs 4 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious behavior: EnumeratesProcesses 2 IoCs
- Suspicious use of FindShellTrayWindow 1 IoCs
- Suspicious use of WriteProcessMemory 9 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.exe"C:\Users\Admin\AppData\Local\Temp\5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.exe"1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\is-7OUQ6.tmp\5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.tmp"C:\Users\Admin\AppData\Local\Temp\is-7OUQ6.tmp\5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.tmp" /SL5="$70204,4106452,54272,C:\Users\Admin\AppData\Local\Temp\5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.exe"2⤵
- Executes dropped EXE
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe"C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe" -i3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe"C:\Users\Admin\AppData\Local\YofaBoom\yofaboom32_64.exe" -s3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
5031af2e4db76fe8d45013debacf401087c111090a7a9098fcf1f3066693ef52.tmp
yofaboom32_64.exe
_iscrypt.dll
_isdecmp.dll
memory/1680-65-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1680-2-0x0000000000401000-0x000000000040B000-memory.dmp
memory/1680-0-0x0000000000400000-0x0000000000414000-memory.dmp
memory/1924-101-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-89-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-128-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-64-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-123-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-120-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-67-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-70-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-73-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-76-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-79-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-81-0x0000000000A90000-0x0000000000B32000-memory.dmp
memory/1924-86-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-117-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-92-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-95-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-98-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-114-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-104-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-108-0x0000000000400000-0x0000000000731000-memory.dmp
memory/1924-111-0x0000000000400000-0x0000000000731000-memory.dmp
memory/2276-59-0x0000000000400000-0x0000000000731000-memory.dmp
memory/2276-58-0x0000000000400000-0x0000000000731000-memory.dmp
memory/2276-61-0x0000000000400000-0x0000000000731000-memory.dmp
memory/4620-10-0x0000000000400000-0x00000000004BD000-memory.dmp
memory/4620-66-0x0000000000400000-0x00000000004BD000-memory.dmp