Analysis
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max time kernel
103s -
max time network
106s -
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 12:59
Behavioral task
behavioral1
Sample
sigmasoft.exe
Resource
win10v2004-20240426-en
General
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Target
sigmasoft.exe
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Size
83KB
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MD5
d029e277e0c0a4219ef00e741ff0866f
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SHA1
3800df90532e36e4598e45e2a5f8e982c539658f
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SHA256
0640c1576830fe2f1d8c691caf51c1385715dd08271795c3b5ff39e69d012cf3
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SHA512
6440cc76f7471e404ccbf83625e3d050640a99643e6ebdbdffa0a296ec35c2f8735657b45e4ea521bea009fb99ab37ca7c5e6c273be9d6258e8f6955aa64f878
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SSDEEP
1536:aYpr5ogTbJzDf/E9twyyMuD3H+bpVFAOm6mRh3lOcPm4iPZoT:YYbJzzVyy33H+bp8HOMm42+
Malware Config
Extracted
xworm
gorodpro-42772.portmap.host:42772
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Install_directory
%ProgramData%
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install_file
svchost.exe
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telegram
https://api.telegram.org/bot7355581159:AAHuAE4iBHDb_a30tdbv0fk7JMGNEAGHbyU
Signatures
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Detect Xworm Payload 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2164-0-0x00000000006C0000-0x00000000006DC000-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 2892 powershell.exe 4592 powershell.exe 404 powershell.exe 4544 powershell.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
sigmasoft.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation sigmasoft.exe -
Drops startup file 2 IoCs
Processes:
sigmasoft.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk sigmasoft.exe File opened for modification C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk sigmasoft.exe -
Executes dropped EXE 2 IoCs
Processes:
svchost.exesvchost.exepid process 1356 svchost.exe 4348 svchost.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
sigmasoft.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-3571316656-3665257725-2415531812-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\ProgramData\\svchost.exe" sigmasoft.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.exepid process 4544 powershell.exe 4544 powershell.exe 2892 powershell.exe 2892 powershell.exe 4592 powershell.exe 4592 powershell.exe 404 powershell.exe 404 powershell.exe 2164 sigmasoft.exe -
Suspicious use of AdjustPrivilegeToken 8 IoCs
Processes:
sigmasoft.exepowershell.exepowershell.exepowershell.exepowershell.exesvchost.exesvchost.exedescription pid process Token: SeDebugPrivilege 2164 sigmasoft.exe Token: SeDebugPrivilege 4544 powershell.exe Token: SeDebugPrivilege 2892 powershell.exe Token: SeDebugPrivilege 4592 powershell.exe Token: SeDebugPrivilege 404 powershell.exe Token: SeDebugPrivilege 2164 sigmasoft.exe Token: SeDebugPrivilege 1356 svchost.exe Token: SeDebugPrivilege 4348 svchost.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
Processes:
sigmasoft.exepid process 2164 sigmasoft.exe -
Suspicious use of WriteProcessMemory 10 IoCs
Processes:
sigmasoft.exedescription pid process target process PID 2164 wrote to memory of 4544 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 4544 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 2892 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 2892 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 4592 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 4592 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 404 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 404 2164 sigmasoft.exe powershell.exe PID 2164 wrote to memory of 3832 2164 sigmasoft.exe schtasks.exe PID 2164 wrote to memory of 3832 2164 sigmasoft.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.exe"C:\Users\Admin\AppData\Local\Temp\sigmasoft.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:2164 -
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.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4544
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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.exe'2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2892
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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:4592
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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:404
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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:3832
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1356
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C:\ProgramData\svchost.exeC:\ProgramData\svchost.exe1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4348
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
83KB
MD5d029e277e0c0a4219ef00e741ff0866f
SHA13800df90532e36e4598e45e2a5f8e982c539658f
SHA2560640c1576830fe2f1d8c691caf51c1385715dd08271795c3b5ff39e69d012cf3
SHA5126440cc76f7471e404ccbf83625e3d050640a99643e6ebdbdffa0a296ec35c2f8735657b45e4ea521bea009fb99ab37ca7c5e6c273be9d6258e8f6955aa64f878
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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
MD56d3e9c29fe44e90aae6ed30ccf799ca8
SHA1c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA2562360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
SHA51260c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
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Filesize
944B
MD522310ad6749d8cc38284aa616efcd100
SHA1440ef4a0a53bfa7c83fe84326a1dff4326dcb515
SHA25655b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf
SHA5122ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def
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Filesize
944B
MD596e3b86880fedd5afc001d108732a3e5
SHA18fc17b39d744a9590a6d5897012da5e6757439a3
SHA256c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294
SHA512909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d
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Filesize
60B
MD5d17fe0a3f47be24a6453e9ef58c94641
SHA16ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA25696ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
SHA5125b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82