Analysis
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max time kernel
127s -
max time network
128s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
31-05-2024 12:31
Behavioral task
behavioral1
Sample
sigmasoft-0.1xw.exe
Resource
win7-20240221-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
74KB
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MD5
c376c6af503504eba91372ebc3afb500
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SHA1
283eeb9839d0e60fff06bae959c8f064d98e5b72
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SHA256
1e860af19f9769079667c6537fe731cafb56211de7351df9a3b61b2818d5069a
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SHA512
bb4b600bf8da4a8f004043c3008dd7770c479a1d453846026e6e2d983156ecdeca344d403092e67783ff798e2610a0584117fb707e3406e678f231319d1c59f1
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SSDEEP
1536:uo5HV2sDLBulJl38yGzD+b8LoSK/A6iHzOFZPrUP:JYmS38y2D+b8EGzOFZS
Malware Config
Extracted
xworm
never-knowledge.gl.at.ply.gg:4759
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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/4028-1-0x0000000000DA0000-0x0000000000DB8000-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 3456 powershell.exe 2596 powershell.exe 2960 powershell.exe 2888 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-1-5-21-4124900551-4068476067-3491212533-1000\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 2 IoCs
Processes:
svchost.exesvchost.exepid process 3044 svchost.exe 4496 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-1-5-21-4124900551-4068476067-3491212533-1000\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 2960 powershell.exe 2960 powershell.exe 2888 powershell.exe 2888 powershell.exe 3456 powershell.exe 3456 powershell.exe 2596 powershell.exe 2596 powershell.exe 4028 sigmasoft-0.1xw.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
sigmasoft-0.1xw.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exesvchost.exedescription pid process Token: SeDebugPrivilege 4028 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2960 powershell.exe Token: SeDebugPrivilege 2888 powershell.exe Token: SeDebugPrivilege 3456 powershell.exe Token: SeDebugPrivilege 2596 powershell.exe Token: SeDebugPrivilege 4028 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 3044 svchost.exe Token: SeDebugPrivilege 4496 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 4028 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
sigmasoft-0.1xw.exedescription pid process target process PID 4028 wrote to memory of 2960 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 2960 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 2888 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 2888 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 3456 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 3456 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 2596 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 2596 4028 sigmasoft-0.1xw.exe powershell.exe PID 4028 wrote to memory of 1400 4028 sigmasoft-0.1xw.exe schtasks.exe PID 4028 wrote to memory of 1400 4028 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:4028 -
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:2960
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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:2888
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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:3456
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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:2596
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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:1400
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3044
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4496
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
74KB
MD5c376c6af503504eba91372ebc3afb500
SHA1283eeb9839d0e60fff06bae959c8f064d98e5b72
SHA2561e860af19f9769079667c6537fe731cafb56211de7351df9a3b61b2818d5069a
SHA512bb4b600bf8da4a8f004043c3008dd7770c479a1d453846026e6e2d983156ecdeca344d403092e67783ff798e2610a0584117fb707e3406e678f231319d1c59f1
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
654B
MD52ff39f6c7249774be85fd60a8f9a245e
SHA1684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA256e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
SHA5121d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
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Filesize
944B
MD56d42b6da621e8df5674e26b799c8e2aa
SHA1ab3ce1327ea1eeedb987ec823d5e0cb146bafa48
SHA2565ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c
SHA51253faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29
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Filesize
944B
MD5da5c82b0e070047f7377042d08093ff4
SHA189d05987cd60828cca516c5c40c18935c35e8bd3
SHA25677a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5
SHA5127360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b
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Filesize
944B
MD5eb1ad317bd25b55b2bbdce8a28a74a94
SHA198a3978be4d10d62e7411946474579ee5bdc5ea6
SHA2569e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98
SHA512d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82