Analysis
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max time kernel
34s -
max time network
26s -
platform
windows7_x64 -
resource
win7-20240215-en -
resource tags
arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system -
submitted
31-05-2024 03:54
Behavioral task
behavioral1
Sample
sigmasoft-0.1xw.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
sigmasoft-0.1xw.exe
Resource
win10v2004-20240508-en
General
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Target
sigmasoft-0.1xw.exe
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Size
80KB
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MD5
7aba935fb8e2e973e2e15b98cda42058
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SHA1
5c227e7f053a883394d6162f9183c3343532a302
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SHA256
d1adc072119b02981f1581427259693b0e14db39e06e27daa2059259a97857d4
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SHA512
fd566bc99920c03a86d8a7b1b85d29ef23e48bcf686d5259d957d0921fac5de2b17c21341d77859616efde4b621037282c34f3fb3f5099337b01c17e6b8378bf
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SSDEEP
1536:4HZle0b+wFYoZrXbcAc8T+b6l+URVthEmrk6PocZgnWQ6OjK5PQUZ:Yg0b+wHRrcAT+boPd7OnWQ6O+20
Malware Config
Extracted
xworm
127.0.0.1:42772
gorodpro-42772.portmap.host:42772
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Install_directory
%ProgramData%
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install_file
svchost.exe
Signatures
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Detect Xworm Payload 1 IoCs
Processes:
resource yara_rule behavioral1/memory/1764-1-0x0000000000AF0000-0x0000000000B0A000-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 2696 powershell.exe 2576 powershell.exe 2616 powershell.exe 2568 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 -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
sigmasoft-0.1xw.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2248906074-2862704502-246302768-1000\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).
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Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
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Suspicious behavior: EnumeratesProcesses 5 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exesigmasoft-0.1xw.exepid process 2696 powershell.exe 2576 powershell.exe 2616 powershell.exe 2568 powershell.exe 1764 sigmasoft-0.1xw.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
sigmasoft-0.1xw.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 1764 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2696 powershell.exe Token: SeDebugPrivilege 2576 powershell.exe Token: SeDebugPrivilege 2616 powershell.exe Token: SeDebugPrivilege 2568 powershell.exe Token: SeDebugPrivilege 1764 sigmasoft-0.1xw.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 1764 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 15 IoCs
Processes:
sigmasoft-0.1xw.exedescription pid process target process PID 1764 wrote to memory of 2696 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2696 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2696 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2576 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2576 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2576 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2616 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2616 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2616 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2568 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2568 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2568 1764 sigmasoft-0.1xw.exe powershell.exe PID 1764 wrote to memory of 2192 1764 sigmasoft-0.1xw.exe schtasks.exe PID 1764 wrote to memory of 2192 1764 sigmasoft-0.1xw.exe schtasks.exe PID 1764 wrote to memory of 2192 1764 sigmasoft-0.1xw.exe schtasks.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
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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:1764 -
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:2696
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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:2576
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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:2616
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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:2568
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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:2192
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize7KB
MD52f9d23f2634a7dc1d560f019dd3bf6de
SHA15e02964464bd2bfb0137a0faf5e1011ec427c82c
SHA256280d4f8adae6125caefcb7885a296a65fd3822749231b0d576b364aad8940131
SHA5128ccca03164f30e8f650ad11b59a458ae44ca107f0cad251d3b1408ec92655a9ed88aa3f6bbfd69793399abcaacdfc5ac3ecca22f7b33210447227ab729986707
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MD5
d41d8cd98f00b204e9800998ecf8427e
SHA1da39a3ee5e6b4b0d3255bfef95601890afd80709
SHA256e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855
SHA512cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e