Analysis
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max time kernel
32s -
max time network
32s -
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 03:54
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 behavioral2/memory/4332-1-0x00000000003C0000-0x00000000003DA000-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 4152 powershell.exe 2700 powershell.exe 3484 powershell.exe 4140 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-1-5-21-1181767204-2009306918-3718769404-1000\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 -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
sigmasoft-0.1xw.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-1181767204-2009306918-3718769404-1000\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 14 IoCs
Processes:
powershell.exepowershell.exepowershell.exepowershell.exesigmasoft-0.1xw.exepid process 4152 powershell.exe 4152 powershell.exe 4152 powershell.exe 2700 powershell.exe 2700 powershell.exe 2700 powershell.exe 3484 powershell.exe 3484 powershell.exe 3484 powershell.exe 4140 powershell.exe 4140 powershell.exe 4140 powershell.exe 4332 sigmasoft-0.1xw.exe 4332 sigmasoft-0.1xw.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
sigmasoft-0.1xw.exepowershell.exepowershell.exepowershell.exepowershell.exedescription pid process Token: SeDebugPrivilege 4332 sigmasoft-0.1xw.exe Token: SeDebugPrivilege 4152 powershell.exe Token: SeDebugPrivilege 2700 powershell.exe Token: SeDebugPrivilege 3484 powershell.exe Token: SeDebugPrivilege 4140 powershell.exe Token: SeDebugPrivilege 4332 sigmasoft-0.1xw.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft-0.1xw.exepid process 4332 sigmasoft-0.1xw.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
sigmasoft-0.1xw.exedescription pid process target process PID 4332 wrote to memory of 4152 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 4152 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 2700 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 2700 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 3484 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 3484 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 4140 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 4140 4332 sigmasoft-0.1xw.exe powershell.exe PID 4332 wrote to memory of 2612 4332 sigmasoft-0.1xw.exe schtasks.exe PID 4332 wrote to memory of 2612 4332 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:4332 -
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:4152
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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:2700
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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:3484
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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:4140
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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:2612
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C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --field-trial-handle=3148,i,1697479186275492802,18058102846092193784,262144 --variations-seed-version --mojo-platform-channel-handle=4404 /prefetch:81⤵PID:3548
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
2KB
MD5d85ba6ff808d9e5444a4b369f5bc2730
SHA131aa9d96590fff6981b315e0b391b575e4c0804a
SHA25684739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
SHA5128c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
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Filesize
944B
MD52979eabc783eaca50de7be23dd4eafcf
SHA1d709ce5f3a06b7958a67e20870bfd95b83cad2ea
SHA256006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903
SHA51292bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba
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Filesize
944B
MD575d224e238a397659d8e5cf458a41143
SHA1d182d16283d3d864a2e328b677551428c29ad6df
SHA2566a98fa5e6c5b77722f2bd8c855fd14d6bf545fc35b292252d1dc136b89ed2fee
SHA5123477f3b4182ffdccc817de4242c8fcba706c193a0de5170cd023f8df3d330487d7e372556524b5a0fe1df56de40923700f3f8368eadf6601970e347cbcf078cc
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Filesize
944B
MD550d3033f2bc3a3774c469d03e71a79a9
SHA122027b1d52085de99b3bffa276530fea5d961471
SHA2562987e99ec7fa17bd4ab7de3cb4dc62645e1052012a5a357904d6fc6db9054147
SHA512ecf7ab1a9e4192454a3e24c60453fd702a8c648e00078fc933b9182f4a3d3c10c6f5da622a5729b35727e6ddc8837029caddcaf76f56e805b9744253b56da5d8
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82