Analysis
- max time kernel
147s - max time network
143s - platform
windows7_x64 - resource
win7v20201028 - submitted
10/11/2020, 11:08
Static task
static1
Behavioral task
behavioral1
Sample
af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe
Resource
win7v20201028
windows7_x64
0 signatures
0 seconds
Behavioral task
behavioral2
Sample
af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe
Resource
win10v20201028
windows10_x64
0 signatures
0 seconds
General
- Target af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe
- Size 220KB
- Sample201110-ttpy4jan7n
- SHA256 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb
- MD5 b4b6a8e368bf9746f9dec03f03f857f3
- SHA1 4a258a76580d798e86cf1ac0a5bdc824020871bf
- SHA512 bebb1f4f8acaea99e078ddaadf3db181fdb99866c4d4bdac30e77ff4926b224df67a841d0786243fb1f4c5ccc8badb075b0c3b3f256389d2d08c7f46b094b3f0
- MD5 SHA1 SHA512
Score
10/10
Malware Config
Signatures
- Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\shell = "explorer.exe, C:\\Users\\Admin\\AppData\\Local\\_foldernamelocalappdata_\\wshirda32.exe" wshirda32.exe - Executes dropped EXE 3 IoCs
pid Process 1296 wshirda32.exe 1572 wshirda32.exe 1760 wshirda32.exe - Deletes itself 1 IoCs
pid Process 1780 cmd.exe - Adds Run key to start application 2 TTPs 2 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\Run\wshirda32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe" af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe Set value (str) \REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*wshirda32 = "C:\\Users\\Admin\\AppData\\Local\\Temp\\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe" af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe - Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Modifies service 2 TTPs 28 IoCs
description ioc Process Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Networking 4.0.0.0\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 3.0.0.0\Linkage\Export = 4d0053004400540043002000420072006900640067006500200033002e0030002e0030002e00300000000000 wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelEndpoint 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c0045006e00640070006f0069006e007400200033002e0030002e0030002e00300000000000 wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelService 3.0.0.0\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 3.0.0.0\Linkage\Export = 53004d0053007600630048006f0073007400200033002e0030002e0030002e00300000000000 wshirda32.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Outlook\Performance\Disable Performance Counters = "4" wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Memory Cache 4.0\Linkage\Export = 2e004e004500540020004d0065006d006f0072007900200043006100630068006500200034002e00300000000000 wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 4.0.0.0\Linkage\Export = 4d0053004400540043002000420072006900640067006500200034002e0030002e0030002e00300000000000 wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 3.0.0.0\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 3.0.0.0\Linkage\Export = 570069006e0064006f0077007300200057006f0072006b0066006c006f007700200046006f0075006e0064006100740069006f006e00200033002e0030002e0030002e00300000000000 wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Data Provider for Oracle\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Data Provider for SqlServer\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelOperation 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c004f007000650072006100740069006f006e00200033002e0030002e0030002e00300000000000 wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 4.0.0.0\Linkage\Export = 570069006e0064006f0077007300200057006f0072006b0066006c006f007700200046006f0075006e0064006100740069006f006e00200034002e0030002e0030002e00300000000000 wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET Memory Cache 4.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelEndpoint 3.0.0.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Windows Workflow Foundation 4.0.0.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Data\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\.NET CLR Networking\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 3.0.0.0\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelService 3.0.0.0\Linkage\Export = 53006500720076006900630065004d006f00640065006c005300650072007600690063006500200033002e0030002e0030002e00300000000000 wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 3.0.0.0\Linkage wshirda32.exe Set value (data) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 4.0.0.0\Linkage\Export = 53004d0053007600630048006f0073007400200034002e0030002e0030002e00300000000000 wshirda32.exe Set value (int) \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Outlook\Performance\1021 = "132494856387576512" wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\ServiceModelOperation 3.0.0.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\SMSvcHost 4.0.0.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\MSDTC Bridge 4.0.0.0\Linkage wshirda32.exe Key created \REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\BITS\Performance wshirda32.exe - Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
pid Process 564 schtasks.exe - Delays execution with timeout.exe 1 IoCs
pid Process 1460 timeout.exe - Suspicious behavior: EnumeratesProcesses 65 IoCs
pid Process 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe 1296 wshirda32.exe - Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1296 wshirda32.exe - Suspicious use of WriteProcessMemory 21 IoCs
description pid Process procid_target PID 1032 wrote to memory of 1296 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 26 PID 1032 wrote to memory of 1296 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 26 PID 1032 wrote to memory of 1296 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 26 PID 1032 wrote to memory of 1976 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 27 PID 1032 wrote to memory of 1976 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 27 PID 1032 wrote to memory of 1976 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 27 PID 1032 wrote to memory of 1780 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 29 PID 1032 wrote to memory of 1780 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 29 PID 1032 wrote to memory of 1780 1032 af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe 29 PID 1780 wrote to memory of 1460 1780 cmd.exe 31 PID 1780 wrote to memory of 1460 1780 cmd.exe 31 PID 1780 wrote to memory of 1460 1780 cmd.exe 31 PID 1296 wrote to memory of 564 1296 wshirda32.exe 35 PID 1296 wrote to memory of 564 1296 wshirda32.exe 35 PID 1296 wrote to memory of 564 1296 wshirda32.exe 35 PID 1824 wrote to memory of 1572 1824 taskeng.exe 40 PID 1824 wrote to memory of 1572 1824 taskeng.exe 40 PID 1824 wrote to memory of 1572 1824 taskeng.exe 40 PID 1824 wrote to memory of 1760 1824 taskeng.exe 41 PID 1824 wrote to memory of 1760 1824 taskeng.exe 41 PID 1824 wrote to memory of 1760 1824 taskeng.exe 41
Processes
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C:\Users\Admin\AppData\Local\Temp\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe"C:\Users\Admin\AppData\Local\Temp\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe"1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1032 -
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exe"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exe"2⤵
- Modifies WinLogon for persistence
- Executes dropped EXE
- Modifies service
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1296 -
C:\Windows\System32\schtasks.exe"C:\Windows\System32\schtasks.exe" /create /tn Admin /tr "\"C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exe\" arguments" /sc MINUTE /mo 13⤵
- Creates scheduled task(s)
PID:564
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe"2⤵PID:1976
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c timeout /t 5 && del "C:\Users\Admin\AppData\Local\Temp\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe" && del "C:\Users\Admin\AppData\Local\Temp\af4cf51f4a1e29d76867b510c0d7fae11f20b43e2405c85986b5e957ea6f00cb.exe.config"2⤵
- Deletes itself
- Suspicious use of WriteProcessMemory
PID:1780 -
C:\Windows\system32\timeout.exetimeout /t 53⤵
- Delays execution with timeout.exe
PID:1460
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C:\Windows\system32\wbem\WmiApSrv.exeC:\Windows\system32\wbem\WmiApSrv.exe1⤵PID:968
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C:\Windows\system32\taskeng.exetaskeng.exe {FBD7434B-5FC7-4247-A185-A8A644841A1A} S-1-5-21-293278959-2699126792-324916226-1000:TUICJFPF\Admin:Interactive:[1]1⤵
- Suspicious use of WriteProcessMemory
PID:1824 -
C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exe arguments2⤵
- Executes dropped EXE
PID:1572
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C:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exeC:\Users\Admin\AppData\Local\_foldernamelocalappdata_\wshirda32.exe arguments2⤵
- Executes dropped EXE
PID:1760
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