Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20240903-en -
resource tags
arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system -
submitted
20-10-2024 22:08
Behavioral task
behavioral1
Sample
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
Resource
win7-20240903-en
General
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Target
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe
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Size
317KB
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MD5
2f8c4529d3ea984da867d5bc3bb8c61c
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SHA1
9f76eb8c2a8b4d96e1db6c7a09e29f00fe8e0cd8
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SHA256
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae
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SHA512
0d74b2e6041fc84179646ededd45fb8ea094f999751de570b712dcca9add94f9ff8e30441fa3f9377376c1f44a3ddff78ecd12ec1a32d8fd3c0616e5f4305086
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SSDEEP
3072:vSQ0EWVwZhKxC5Rt+k60Zh+qw6PYSsszfHZTZJ2lbaV2:vPA6wxmuJspr2lb6
Malware Config
Signatures
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Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
svchost.exedescription ioc Process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run svchost.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\25772 = "C:\\PROGRA~3\\LOCALS~1\\Temp\\msyrpaa.bat" svchost.exe -
Executes dropped EXE 3 IoCs
Processes:
skyrpe.exeskyrpe.exeskyrpe.exepid Process 43560 skyrpe.exe 117116 skyrpe.exe 117232 skyrpe.exe -
Loads dropped DLL 5 IoCs
Processes:
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exepid Process 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\Skype = "C:\\Users\\Admin\\AppData\\Roaming\\skype\\skyrpe.exe" reg.exe -
Maps connected drives based on registry 3 TTPs 2 IoCs
Disk information is often read in order to detect sandboxing environments.
Processes:
skyrpe.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\disk\enum skyrpe.exe Key value queried \REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Disk\Enum\0 skyrpe.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exeskyrpe.exedescription pid Process procid_target PID 2180 set thread context of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 43560 set thread context of 117116 43560 skyrpe.exe 36 PID 43560 set thread context of 117232 43560 skyrpe.exe 37 -
Processes:
resource yara_rule behavioral1/memory/2180-0-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/2180-223-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/2180-53491-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/42756-53490-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/42756-53489-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/42756-53485-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/42756-53483-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/42756-53488-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/files/0x0008000000015d9a-53521.dat upx behavioral1/memory/42756-53524-0x0000000002700000-0x0000000002752000-memory.dmp upx behavioral1/memory/43560-53544-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/42756-53694-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/42756-53695-0x0000000002700000-0x0000000002752000-memory.dmp upx behavioral1/memory/43560-53700-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/42756-106989-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/43560-106984-0x0000000000400000-0x0000000000452000-memory.dmp upx behavioral1/memory/117116-106999-0x0000000000400000-0x000000000040B000-memory.dmp upx -
Drops file in Program Files directory 1 IoCs
Processes:
svchost.exedescription ioc Process File created C:\PROGRA~3\LOCALS~1\Temp\msyrpaa.bat svchost.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 8 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
skyrpe.exesvchost.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.execmd.exereg.exeskyrpe.exeskyrpe.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language skyrpe.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language svchost.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language cmd.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language reg.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language skyrpe.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language skyrpe.exe -
Suspicious behavior: EnumeratesProcesses 1 IoCs
Processes:
skyrpe.exepid Process 117232 skyrpe.exe -
Suspicious behavior: MapViewOfSection 1 IoCs
Processes:
skyrpe.exepid Process 117232 skyrpe.exe -
Suspicious use of AdjustPrivilegeToken 7 IoCs
Processes:
skyrpe.exedescription pid Process Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe Token: SeDebugPrivilege 117116 skyrpe.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exeskyrpe.exeskyrpe.exepid Process 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 43560 skyrpe.exe 117116 skyrpe.exe -
Suspicious use of WriteProcessMemory 39 IoCs
Processes:
55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.execmd.exeskyrpe.exeskyrpe.exedescription pid Process procid_target PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 2180 wrote to memory of 42756 2180 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 31 PID 42756 wrote to memory of 43300 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 32 PID 42756 wrote to memory of 43300 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 32 PID 42756 wrote to memory of 43300 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 32 PID 42756 wrote to memory of 43300 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 32 PID 43300 wrote to memory of 42772 43300 cmd.exe 34 PID 43300 wrote to memory of 42772 43300 cmd.exe 34 PID 43300 wrote to memory of 42772 43300 cmd.exe 34 PID 43300 wrote to memory of 42772 43300 cmd.exe 34 PID 42756 wrote to memory of 43560 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 35 PID 42756 wrote to memory of 43560 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 35 PID 42756 wrote to memory of 43560 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 35 PID 42756 wrote to memory of 43560 42756 55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe 35 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117116 43560 skyrpe.exe 36 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 43560 wrote to memory of 117232 43560 skyrpe.exe 37 PID 117232 wrote to memory of 117336 117232 skyrpe.exe 38 PID 117232 wrote to memory of 117336 117232 skyrpe.exe 38 PID 117232 wrote to memory of 117336 117232 skyrpe.exe 38 PID 117232 wrote to memory of 117336 117232 skyrpe.exe 38
Processes
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C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2180 -
C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"C:\Users\Admin\AppData\Local\Temp\55995f961e94c8598962ee06e193ce602a03d2c475bc9d9e44e56d744870f8ae.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:42756 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\BXWAO.bat" "3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:43300 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Skype" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe" /f4⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:42772
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C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:43560 -
C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:117116
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C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"C:\Users\Admin\AppData\Roaming\skype\skyrpe.exe"4⤵
- Executes dropped EXE
- Maps connected drives based on registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:117232 -
C:\Windows\syswow64\svchost.exeC:\Windows\syswow64\svchost.exe5⤵
- Adds policy Run key to start application
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
PID:117336
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
139B
MD50654f004b2e314bad7f75867e91da37d
SHA14232c22e7340b12108d86e3cb35ed288a3dbc7f1
SHA256ead325a060300a9606a3f0f14694be39a3e4006a60c6c3eb0bea5d6f98192249
SHA512dda135cdfca90a742d42b4c7a5e7f5df6580ec428302a8f0c311f5b92eb08dda75774e0c7497110faffbe2dfa02b30d2dfe35ec2848a275f53be8d930c7aa553
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Filesize
317KB
MD5bbb0b471acd69e0a1a229394de69ea04
SHA16c16573ff6d1bc1da49d80df4ced98c4ac9f699b
SHA2568cbf5b429777e41b223aeeae0e25a122ec1df0f536ee1c8c00d1e4b8f5211782
SHA5124550ba76e5932341443edf49bc003029d022514aec99b1b7df301aa9c72d5fcf5e17e31a21c87784f03bb3df4d65840ae4bbfa8f1b28239c487a47cb93ff7c8d