Analysis
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max time kernel
56s -
max time network
46s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-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
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Target
sigmasoft-0.1xw.exe
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Size
71KB
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MD5
6538116da6dcf30ee794597963b20207
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SHA1
6ff33f12ea69fc818b2b633a46dafc9ac47cd1a8
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SHA256
81b460bce1126aaeee941fa6fb3945bacd058d56549443db236bd790661dae3a
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SHA512
ce0cab07f94532a446a72f5b1b3b125a64e03861bb48b48daf5f392001afc72e0f960bc9576515063b7ada294d3b44edd08f0bd618418d4e56c0eb2f65ebaee3
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SSDEEP
1536:XH1viI9rGg/4SHrsmGz+b97iBMNCJN6qO7MrItaPOxU6:XD9rGgpHXy+b9pNUO7MM1f
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 2 IoCs
Processes:
resource yara_rule behavioral2/memory/4604-1-0x0000000000A60000-0x0000000000A78000-memory.dmp family_xworm C:\ProgramData\svchost.exe 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 1380 powershell.exe 2224 powershell.exe 4136 powershell.exe 2124 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
sigmasoft-0.1xw.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation sigmasoft-0.1xw.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 4360 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-1-5-21-3906287020-2915474608-1755617787-1000\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 9 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exesigmasoft-0.1xw.exepid process 4136 powershell.exe 4136 powershell.exe 2124 powershell.exe 2124 powershell.exe 1380 powershell.exe 1380 powershell.exe 2224 powershell.exe 2224 powershell.exe 4604 sigmasoft-0.1xw.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
sigmasoft-0.1xw.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exedescription pid process Token: SeDebugPrivilege 4604 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 4136 powershell.exe Token: SeDebugPrivilege 2124 powershell.exe Token: SeDebugPrivilege 1380 powershell.exe Token: SeDebugPrivilege 2224 powershell.exe Token: SeDebugPrivilege 4604 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 4360 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 4604 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
sigmasoft-0.1xw.exedescription pid process target process PID 4604 wrote to memory of 4136 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 4136 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 2124 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 2124 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 1380 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 1380 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 2224 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 2224 4604 sigmasoft-0.1xw.exe powershell.exe PID 4604 wrote to memory of 536 4604 sigmasoft-0.1xw.exe schtasks.exe PID 4604 wrote to memory of 536 4604 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⤵
- Checks computer location settings
- 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:4604 -
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:4136
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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:2124
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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:1380
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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:2224
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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:536
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4360
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
71KB
MD56538116da6dcf30ee794597963b20207
SHA16ff33f12ea69fc818b2b633a46dafc9ac47cd1a8
SHA25681b460bce1126aaeee941fa6fb3945bacd058d56549443db236bd790661dae3a
SHA512ce0cab07f94532a446a72f5b1b3b125a64e03861bb48b48daf5f392001afc72e0f960bc9576515063b7ada294d3b44edd08f0bd618418d4e56c0eb2f65ebaee3
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD5d28a889fd956d5cb3accfbaf1143eb6f
SHA1157ba54b365341f8ff06707d996b3635da8446f7
SHA25621e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45
SHA5120b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c
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Filesize
944B
MD5da5c82b0e070047f7377042d08093ff4
SHA189d05987cd60828cca516c5c40c18935c35e8bd3
SHA25677a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5
SHA5127360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82