Analysis
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max time kernel
145s -
max time network
123s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
03/02/2024, 19:04
Behavioral task
behavioral1
Sample
8d1b98911e753283e86aa1d84a2826d8.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
8d1b98911e753283e86aa1d84a2826d8.exe
Resource
win10v2004-20231215-en
General
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Target
8d1b98911e753283e86aa1d84a2826d8.exe
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Size
1.3MB
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MD5
8d1b98911e753283e86aa1d84a2826d8
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SHA1
9229784e22dbe0e3064c41a0e1f886b915f6168f
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SHA256
46b5e0aa12026e4615bbbb5d4d243a5d7445de044a649bc94e7581a1d7b04e61
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SHA512
5c890395f5676801749a5810aca8237f988be5996ed6f742d085a12311b1e7964e5e9f211ae5fcb84c80e5cf08a5ad34006107c45f254875757a2aacad11343b
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SSDEEP
24576:/hNCxhaAnl/gA4GorqG+or8UNii/6wIjDWscgie+QjAR:/hQcWopGMT8wNPIjggi+8
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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description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
ModiLoader Second Stage 20 IoCs
resource yara_rule behavioral1/memory/2196-2-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/2196-22-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/2196-33-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/2196-34-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-39-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-68-0x00000000761D0000-0x00000000762C0000-memory.dmp modiloader_stage2 behavioral1/memory/1656-70-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-72-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-73-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-75-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-76-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-78-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-79-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-80-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-81-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-82-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-83-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-84-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-85-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 behavioral1/memory/1656-86-0x0000000000400000-0x000000000069E000-memory.dmp modiloader_stage2 -
Deletes itself 1 IoCs
pid Process 1656 mstwain32.exe -
Executes dropped EXE 1 IoCs
pid Process 1656 mstwain32.exe -
resource yara_rule behavioral1/memory/2196-2-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/2196-22-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/files/0x00060000000055d8-28.dat themida behavioral1/memory/2196-33-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/2196-34-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-39-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-68-0x00000000761D0000-0x00000000762C0000-memory.dmp themida behavioral1/memory/1656-70-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-72-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-73-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-75-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-76-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-78-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-79-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-80-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-81-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-82-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-83-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-84-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-85-0x0000000000400000-0x000000000069E000-memory.dmp themida behavioral1/memory/1656-86-0x0000000000400000-0x000000000069E000-memory.dmp themida -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-1603059206-2004189698-4139800220-1000\Software\Microsoft\Windows\CurrentVersion\Run\mstwain32 = "C:\\Windows\\mstwain32.exe" mstwain32.exe -
description ioc Process Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 8d1b98911e753283e86aa1d84a2826d8.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA mstwain32.exe Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
Drops file in Windows directory 4 IoCs
description ioc Process File opened for modification C:\Windows\mstwain32.exe 8d1b98911e753283e86aa1d84a2826d8.exe File created C:\Windows\ntdtcstp.dll mstwain32.exe File created C:\Windows\cmsetac.dll mstwain32.exe File created C:\Windows\mstwain32.exe 8d1b98911e753283e86aa1d84a2826d8.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 2196 8d1b98911e753283e86aa1d84a2826d8.exe 1656 mstwain32.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 2196 8d1b98911e753283e86aa1d84a2826d8.exe Token: SeBackupPrivilege 3052 vssvc.exe Token: SeRestorePrivilege 3052 vssvc.exe Token: SeAuditPrivilege 3052 vssvc.exe Token: SeDebugPrivilege 1656 mstwain32.exe Token: SeDebugPrivilege 1656 mstwain32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 1656 mstwain32.exe 1656 mstwain32.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2196 wrote to memory of 1656 2196 8d1b98911e753283e86aa1d84a2826d8.exe 31 PID 2196 wrote to memory of 1656 2196 8d1b98911e753283e86aa1d84a2826d8.exe 31 PID 2196 wrote to memory of 1656 2196 8d1b98911e753283e86aa1d84a2826d8.exe 31 PID 2196 wrote to memory of 1656 2196 8d1b98911e753283e86aa1d84a2826d8.exe 31 -
System policy modification 1 TTPs 1 IoCs
description ioc Process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" mstwain32.exe -
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
Processes
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C:\Users\Admin\AppData\Local\Temp\8d1b98911e753283e86aa1d84a2826d8.exe"C:\Users\Admin\AppData\Local\Temp\8d1b98911e753283e86aa1d84a2826d8.exe"1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2196 -
C:\Windows\mstwain32.exe"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8d1b98911e753283e86aa1d84a2826d8.exe"2⤵
- UAC bypass
- Deletes itself
- Executes dropped EXE
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:1656
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3052
Network
MITRE ATT&CK Enterprise v15
Privilege Escalation
Abuse Elevation Control Mechanism
1Bypass User Account Control
1Boot or Logon Autostart Execution
1Registry Run Keys / Startup Folder
1Replay Monitor
Loading Replay Monitor...
Downloads
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Filesize
1.3MB
MD58d1b98911e753283e86aa1d84a2826d8
SHA19229784e22dbe0e3064c41a0e1f886b915f6168f
SHA25646b5e0aa12026e4615bbbb5d4d243a5d7445de044a649bc94e7581a1d7b04e61
SHA5125c890395f5676801749a5810aca8237f988be5996ed6f742d085a12311b1e7964e5e9f211ae5fcb84c80e5cf08a5ad34006107c45f254875757a2aacad11343b