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Analysis
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max time kernel
151s -
max time network
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platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
27/11/2022, 22:56
Static task
static1
Behavioral task
behavioral1
Sample
e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe
Resource
win10v2004-20220812-en
General
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Target
e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe
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Size
670KB
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MD5
5aa5d008136ee1d8ff62ed43d542347e
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SHA1
bed4c146c4ad8000ce9b7d3ebac027cf98190384
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SHA256
e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0
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SHA512
f2e45c7d27bb72afc0dde33b6837c0ed842342e93e3894db0d665c97676346f5cd2c7e277bbe14b6279635cfca49de550ee6a43dfb5abcde7f2cacd8fcde727b
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SSDEEP
12288:DU5AxENsBnveIebg0zOOeE32U/0XjjWY0nPVSr1xAFbao:g5cvEbNyOeETEjKYEPVSZK5
Malware Config
Signatures
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ISR Stealer
ISR Stealer is a modified version of Hackhound Stealer written in visual basic.
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ISR Stealer payload 5 IoCs
resource yara_rule behavioral1/memory/108-60-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/108-62-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/108-63-0x0000000000401180-mapping.dmp family_isrstealer behavioral1/memory/108-74-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer behavioral1/memory/108-85-0x0000000000400000-0x0000000000442000-memory.dmp family_isrstealer -
Modifies WinLogon for persistence 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "\"C:\\Users\\Admin\\AppData\\Roaming\\4SiwoU1Y1RW528k2\\bvd4Xhtqp07d.exe\",explorer.exe" e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
NirSoft MailPassView 3 IoCs
Password recovery tool for various email clients
resource yara_rule behavioral1/memory/1568-81-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral1/memory/1568-82-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView behavioral1/memory/1568-84-0x0000000000400000-0x000000000041F000-memory.dmp MailPassView -
Nirsoft 3 IoCs
resource yara_rule behavioral1/memory/1568-81-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral1/memory/1568-82-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft behavioral1/memory/1568-84-0x0000000000400000-0x000000000041F000-memory.dmp Nirsoft -
Drops file in Drivers directory 1 IoCs
description ioc Process File opened for modification C:\Windows\system32\drivers\etc\hosts e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
resource yara_rule behavioral1/memory/2032-68-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2032-72-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2032-73-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2032-75-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1568-76-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/1568-80-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/1568-81-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/1568-82-0x0000000000400000-0x000000000041F000-memory.dmp upx behavioral1/memory/2032-83-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/1568-84-0x0000000000400000-0x000000000041F000-memory.dmp upx -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Accesses Microsoft Outlook accounts 1 TTPs 1 IoCs
description ioc Process Key opened \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Office\Outlook\OMI Account Manager\Accounts e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
Suspicious use of SetThreadContext 3 IoCs
description pid Process procid_target PID 1020 set thread context of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 108 set thread context of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 set thread context of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 -
Suspicious behavior: EnumeratesProcesses 1 IoCs
pid Process 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
Suspicious use of AdjustPrivilegeToken 1 IoCs
description pid Process Token: SeDebugPrivilege 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
Suspicious use of SetWindowsHookEx 1 IoCs
pid Process 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe -
Suspicious use of WriteProcessMemory 26 IoCs
description pid Process procid_target PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 1020 wrote to memory of 108 1020 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 27 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 2032 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 28 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29 PID 108 wrote to memory of 1568 108 e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe 29
Processes
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C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe"C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe"1⤵
- Modifies WinLogon for persistence
- Drops file in Drivers directory
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1020 -
C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe"C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:108 -
C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe/scomma "C:\Users\Admin\AppData\Local\Temp\Jy0GASiv5A.ini"3⤵PID:2032
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C:\Users\Admin\AppData\Local\Temp\e3fd3e05a7bd5a85af2e0ee264d73eb76af885b3d2b054f6d4caa8e3e91118e0.exe/scomma "C:\Users\Admin\AppData\Local\Temp\tivCtlvzNw.ini"3⤵
- Accesses Microsoft Outlook accounts
PID:1568
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