Analysis
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max time kernel
103s -
max time network
106s -
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 03:50
Behavioral task
behavioral1
Sample
sigmasoft-0.1xw.exe
Resource
win7-20240508-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
70KB
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MD5
3df649fb09f96b8f230533fb47e278bd
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SHA1
a23b90bef06801bb0a8741625b1d3442346b2c36
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SHA256
6e0a8cf2d9273efa2593fe6f836013636da8fcc77c31fe00e05666fe9e41d124
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SHA512
34cc7cece2c553086c191478302daa4fbb7b95dd0a176762b8a0400325bb965704d168df615713d9f23018f612e2aa0ab6b661ab052ed06ed5ac6b67dddbdb96
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SSDEEP
1536:eX9lmdM9+Tuq1tndrW+btHA9g6xrOBjgUIdzPQUY:m9lQMOuet5W+btHARrOBFISV
Malware Config
Extracted
xworm
127.0.0.1:42772
never-knowledge.gl.at.ply.gg: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/3764-1-0x0000000000FE0000-0x0000000000FF8000-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 5100 powershell.exe 4912 powershell.exe 2804 powershell.exe 2568 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-1-5-21-1337824034-2731376981-3755436523-1000\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 2644 svchost.exe 3412 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-1-5-21-1337824034-2731376981-3755436523-1000\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 2568 powershell.exe 2568 powershell.exe 5100 powershell.exe 5100 powershell.exe 4912 powershell.exe 4912 powershell.exe 2804 powershell.exe 2804 powershell.exe 3764 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 3764 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2568 powershell.exe Token: SeDebugPrivilege 5100 powershell.exe Token: SeDebugPrivilege 4912 powershell.exe Token: SeDebugPrivilege 2804 powershell.exe Token: SeDebugPrivilege 3764 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 2644 svchost.exe Token: SeDebugPrivilege 3412 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 3764 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
sigmasoft-0.1xw.exedescription pid process target process PID 3764 wrote to memory of 2568 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 2568 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 5100 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 5100 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 4912 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 4912 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 2804 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 2804 3764 sigmasoft-0.1xw.exe powershell.exe PID 3764 wrote to memory of 1872 3764 sigmasoft-0.1xw.exe schtasks.exe PID 3764 wrote to memory of 1872 3764 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:3764 -
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:2568
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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:5100
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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:4912
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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:2804
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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:1872
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2644
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3412
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD53df649fb09f96b8f230533fb47e278bd
SHA1a23b90bef06801bb0a8741625b1d3442346b2c36
SHA2566e0a8cf2d9273efa2593fe6f836013636da8fcc77c31fe00e05666fe9e41d124
SHA51234cc7cece2c553086c191478302daa4fbb7b95dd0a176762b8a0400325bb965704d168df615713d9f23018f612e2aa0ab6b661ab052ed06ed5ac6b67dddbdb96
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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
MD52e907f77659a6601fcc408274894da2e
SHA19f5b72abef1cd7145bf37547cdb1b9254b4efe9d
SHA256385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233
SHA51234fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721
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Filesize
944B
MD504f1d68afbed6b13399edfae1e9b1472
SHA18bfdcb687a995e4a63a8c32df2c66dc89f91a8b0
SHA256f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de
SHA51230c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75
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Filesize
944B
MD5e58749a7a1826f6ea62df1e2ef63a32b
SHA1c0bca21658b8be4f37b71eec9578bfefa44f862d
SHA2560e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93
SHA5124cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82