Analysis
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max time kernel
119s -
max time network
17s -
platform
windows7_x64 -
resource
win7-20240729-en -
resource tags
arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system -
submitted
03-11-2024 03:15
Behavioral task
behavioral1
Sample
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe
Resource
win7-20240729-en
Behavioral task
behavioral2
Sample
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe
Resource
win10v2004-20241007-en
General
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Target
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe
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Size
90KB
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MD5
3815688039508c615f55f0e78e33b220
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SHA1
d1f569fd763296f924c3893b18097629177afc7a
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SHA256
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405b
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SHA512
cf484974d5aee66250db465245b56881935390e1275535ce72699ba877bf6cebeec133f4d52a08a00836b6ac3735cc2b845f44c6d2678edcd718a08cbee7f79e
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SSDEEP
1536:UiYwjQt6QJvzZsgDIWzm/xsXfv+hYhyQQyV5uv4JBrB7w5VRGulTG1ZCL8nj1oDK:0wjZQJvzZsgsW6/Afv+hYfQIm4/rdE3Y
Malware Config
Signatures
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ModiLoader, DBatLoader
ModiLoader is a Delphi loader that misuses cloud services to download other malicious families.
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Modiloader family
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ModiLoader Second Stage 2 IoCs
Processes:
resource yara_rule behavioral1/memory/2568-250-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 behavioral1/memory/2568-259-0x0000000000400000-0x0000000000414000-memory.dmp modiloader_stage2 -
Executes dropped EXE 3 IoCs
Processes:
csrsll.execsrsll.execsrsll.exepid Process 2664 csrsll.exe 948 csrsll.exe 2568 csrsll.exe -
Loads dropped DLL 5 IoCs
Processes:
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exepid Process 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe -
Adds Run key to start application 2 TTPs 1 IoCs
Processes:
reg.exedescription ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-2703099537-420551529-3771253338-1000\Software\Microsoft\Windows\CurrentVersion\Run\Win Pdf = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft\\csrsll.exe" reg.exe -
Suspicious use of SetThreadContext 3 IoCs
Processes:
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.execsrsll.exedescription pid Process procid_target PID 2548 set thread context of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2664 set thread context of 948 2664 csrsll.exe 34 PID 2664 set thread context of 2568 2664 csrsll.exe 35 -
Processes:
resource yara_rule behavioral1/memory/2548-0-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2548-32-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2548-89-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/3032-93-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/3032-95-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/3032-99-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/3032-106-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/3032-104-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/2548-103-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/3032-102-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/files/0x00090000000120fd-131.dat upx behavioral1/memory/3032-133-0x00000000033A0000-0x00000000033F3000-memory.dmp upx behavioral1/memory/2664-148-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/3032-151-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/2664-215-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2664-252-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/2568-250-0x0000000000400000-0x0000000000414000-memory.dmp upx behavioral1/memory/2664-249-0x0000000000400000-0x0000000000453000-memory.dmp upx behavioral1/memory/3032-255-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/948-256-0x0000000000400000-0x000000000040B000-memory.dmp upx behavioral1/memory/2568-259-0x0000000000400000-0x0000000000414000-memory.dmp upx -
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 7 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
Processes:
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.execmd.exereg.execsrsll.execsrsll.execsrsll.exe3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exedescription ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.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 csrsll.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrsll.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language csrsll.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe -
Suspicious use of AdjustPrivilegeToken 64 IoCs
Processes:
csrsll.exedescription pid Process Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe Token: SeDebugPrivilege 948 csrsll.exe -
Suspicious use of SetWindowsHookEx 4 IoCs
Processes:
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.execsrsll.execsrsll.exepid Process 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 2664 csrsll.exe 948 csrsll.exe -
Suspicious use of WriteProcessMemory 36 IoCs
Processes:
3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.execmd.execsrsll.exedescription pid Process procid_target PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 2548 wrote to memory of 3032 2548 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 29 PID 3032 wrote to memory of 1624 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 30 PID 3032 wrote to memory of 1624 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 30 PID 3032 wrote to memory of 1624 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 30 PID 3032 wrote to memory of 1624 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 30 PID 1624 wrote to memory of 2584 1624 cmd.exe 32 PID 1624 wrote to memory of 2584 1624 cmd.exe 32 PID 1624 wrote to memory of 2584 1624 cmd.exe 32 PID 1624 wrote to memory of 2584 1624 cmd.exe 32 PID 3032 wrote to memory of 2664 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 33 PID 3032 wrote to memory of 2664 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 33 PID 3032 wrote to memory of 2664 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 33 PID 3032 wrote to memory of 2664 3032 3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe 33 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 948 2664 csrsll.exe 34 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35 PID 2664 wrote to memory of 2568 2664 csrsll.exe 35
Processes
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C:\Users\Admin\AppData\Local\Temp\3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe"C:\Users\Admin\AppData\Local\Temp\3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe"1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2548 -
C:\Users\Admin\AppData\Local\Temp\3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe"C:\Users\Admin\AppData\Local\Temp\3813b49e53474788ae0ffc9ef03d8cb9131aa6bffa516bfe2bc81e200a1f405bN.exe"2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\SysWOW64\cmd.execmd /c ""C:\Users\Admin\AppData\Local\Temp\WKPUA.bat" "3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1624 -
C:\Windows\SysWOW64\reg.exeREG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /v "Win Pdf" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe" /f4⤵
- Adds Run key to start application
- System Location Discovery: System Language Discovery
PID:2584
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C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2664 -
C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:948
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C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"C:\Users\Admin\AppData\Roaming\Microsoft\csrsll.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:2568
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
145B
MD54eb61ec7816c34ec8c125acadc57ec1b
SHA1b0015cc865c0bb1a027be663027d3829401a31cc
SHA25608375cdb2e9819391f67f71e9718c15b48d3eaa452c54bd8fdd1f6a42e899aff
SHA512f289f01d996dd643560370be8cdf8894e9a676ca3813f706c01ef5d705b9b18246c6cadf10d96edd433a616637b8a78fbd23c5738e76f1c4e671977b6d0cb6c1
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Filesize
90KB
MD5e78d13b138408f1d5f002acbece46765
SHA1998b1a5f175bdbe71f4d29136940085ec7aaba92
SHA256dcd2abbfe41ab00028b598b722472b5abff5a2bad983f0d536c2959c7cb06d7e
SHA5120b4e035868720d177950e1570a33b9810bceb179af06ff799126c3b4a31548bd7685631589feccb286ddcba2884c572b45862422f07dfa8e75c9fc9e51dd70ab