Analysis
-
max time kernel
59s -
max time network
32s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 03:59
Behavioral task
behavioral1
Sample
sigmasoft-0.1xw.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
sigmasoft-0.1xw.exe
Resource
win10v2004-20240426-en
General
-
Target
sigmasoft-0.1xw.exe
-
Size
71KB
-
MD5
6538116da6dcf30ee794597963b20207
-
SHA1
6ff33f12ea69fc818b2b633a46dafc9ac47cd1a8
-
SHA256
81b460bce1126aaeee941fa6fb3945bacd058d56549443db236bd790661dae3a
-
SHA512
ce0cab07f94532a446a72f5b1b3b125a64e03861bb48b48daf5f392001afc72e0f960bc9576515063b7ada294d3b44edd08f0bd618418d4e56c0eb2f65ebaee3
-
SSDEEP
1536:XH1viI9rGg/4SHrsmGz+b97iBMNCJN6qO7MrItaPOxU6:XD9rGgpHXy+b9pNUO7MM1f
Malware Config
Extracted
xworm
127.0.0.1:42772
gorodpro-42772.portmap.host:42772
-
Install_directory
%ProgramData%
-
install_file
svchost.exe
Signatures
-
Detect Xworm Payload 3 IoCs
Processes:
resource yara_rule behavioral1/memory/1848-1-0x0000000000E00000-0x0000000000E18000-memory.dmp family_xworm C:\ProgramData\svchost.exe family_xworm behavioral1/memory/2400-37-0x00000000012A0000-0x00000000012B8000-memory.dmp family_xworm -
Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
Processes:
powershell.exepowershell.exepowershell.exepowershell.exepid process 2924 powershell.exe 2520 powershell.exe 2468 powershell.exe 2380 powershell.exe -
Drops startup file 2 IoCs
Processes:
sigmasoft-0.1xw.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk sigmasoft-0.1xw.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk sigmasoft-0.1xw.exe -
Executes dropped EXE 1 IoCs
Processes:
svchost.exepid process 2400 svchost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
sigmasoft-0.1xw.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2297530677-1229052932-2803917579-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe" sigmasoft-0.1xw.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
-
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
-
Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exesigmasoft-0.1xw.exepid process 2924 powershell.exe 2520 powershell.exe 2468 powershell.exe 2380 powershell.exe 1848 sigmasoft-0.1xw.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
sigmasoft-0.1xw.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exedescription pid process Token: SeDebugPrivilege 1848 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2924 powershell.exe Token: SeDebugPrivilege 2520 powershell.exe Token: SeDebugPrivilege 2468 powershell.exe Token: SeDebugPrivilege 2380 powershell.exe Token: SeDebugPrivilege 1848 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2400 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 1848 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 18 IoCs
Processes:
sigmasoft-0.1xw.exetaskeng.exedescription pid process target process PID 1848 wrote to memory of 2924 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2924 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2924 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2520 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2520 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2520 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2468 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2468 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2468 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2380 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2380 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 2380 1848 sigmasoft-0.1xw.exe powershell.exe PID 1848 wrote to memory of 1512 1848 sigmasoft-0.1xw.exe schtasks.exe PID 1848 wrote to memory of 1512 1848 sigmasoft-0.1xw.exe schtasks.exe PID 1848 wrote to memory of 1512 1848 sigmasoft-0.1xw.exe schtasks.exe PID 2796 wrote to memory of 2400 2796 taskeng.exe svchost.exe PID 2796 wrote to memory of 2400 2796 taskeng.exe svchost.exe PID 2796 wrote to memory of 2400 2796 taskeng.exe svchost.exe -
Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
Processes
-
C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.exe"C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.exe"1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1848 -
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\sigmasoft-0.1xw.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2924
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sigmasoft-0.1xw.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2520
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2468
-
-
C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2380
-
-
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"2⤵
- Creates scheduled task(s)
PID:1512
-
-
C:\Windows\system32\taskeng.exetaskeng.exe {4127EAE2-2CEA-45B6-BF9B-70458632DB17} S-1-5-21-2297530677-1229052932-2803917579-1000:HKULBIBU\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2400
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
-
Filesize
71KB
MD56538116da6dcf30ee794597963b20207
SHA16ff33f12ea69fc818b2b633a46dafc9ac47cd1a8
SHA25681b460bce1126aaeee941fa6fb3945bacd058d56549443db236bd790661dae3a
SHA512ce0cab07f94532a446a72f5b1b3b125a64e03861bb48b48daf5f392001afc72e0f960bc9576515063b7ada294d3b44edd08f0bd618418d4e56c0eb2f65ebaee3
-
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD56b312cb6838810b673f41810efe50d3f
SHA1da9a390dc2b34a755b68d7b00b5f5e6e38100fbe
SHA2560e23a10fd512b937fa2ee82daa32b58edaf597de3723dfd9e4822e2048aef2c6
SHA512bfb2092ab19beb31fd32b7c14e1aad51e8ffbc6e3a8c03a2a94e4866d341c97f7e2173046755efc9070085d735ef2fdbd3a5a0e363247974527b98c079b511f6
-
MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e