Analysis
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max time kernel
144s -
max time network
150s -
platform
windows7_x64 -
resource
win7-20231215-en -
resource tags
arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system -
submitted
31/01/2024, 09:43
Behavioral task
behavioral1
Sample
84163f55a98e68a7e2cb11fe45ed507a.exe
Resource
win7-20231215-en
Behavioral task
behavioral2
Sample
84163f55a98e68a7e2cb11fe45ed507a.exe
Resource
win10v2004-20231222-en
General
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Target
84163f55a98e68a7e2cb11fe45ed507a.exe
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Size
312KB
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MD5
84163f55a98e68a7e2cb11fe45ed507a
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SHA1
b35d3f9852ebde4c7d030a9853121e2e930a7a42
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SHA256
2dd30e532f23c591e582f184dc59a2c9a0691bbfe10183af875c21313c44d436
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SHA512
b22c25ecd03d0c861016bfe75afcfbe46b43e5044d00bb65c384a321335a9ae353998ed3ad965dc1fe88d3324252723fce3b46892c71bb52e5910b597439cb13
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SSDEEP
6144:YG377xS2Vp2CeiorXhwTBN531pcCJJvHCC8oS:Dr7xS2Vp6FwT7bJJvHOoS
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 6 IoCs
resource yara_rule behavioral1/memory/3032-0-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 behavioral1/files/0x00060000000055d8-6.dat modiloader_stage2 behavioral1/memory/3032-10-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 behavioral1/memory/688-14-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 behavioral1/memory/688-21-0x0000000075F70000-0x0000000076060000-memory.dmp modiloader_stage2 behavioral1/memory/688-24-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 -
Deletes itself 1 IoCs
pid Process 688 mstwain32.exe -
Executes dropped EXE 1 IoCs
pid Process 688 mstwain32.exe -
resource yara_rule behavioral1/memory/3032-0-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral1/files/0x00060000000055d8-6.dat upx behavioral1/memory/3032-10-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral1/memory/688-14-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral1/memory/688-21-0x0000000075F70000-0x0000000076060000-memory.dmp upx behavioral1/memory/688-24-0x0000000000400000-0x0000000000450000-memory.dmp upx -
Adds Run key to start application 2 TTPs 1 IoCs
description ioc Process Set value (str) \REGISTRY\USER\S-1-5-21-928733405-3780110381-2966456290-1000\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 84163f55a98e68a7e2cb11fe45ed507a.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 created C:\Windows\mstwain32.exe 84163f55a98e68a7e2cb11fe45ed507a.exe File opened for modification C:\Windows\mstwain32.exe 84163f55a98e68a7e2cb11fe45ed507a.exe File created C:\Windows\ntdtcstp.dll mstwain32.exe File created C:\Windows\cmsetac.dll mstwain32.exe -
Suspicious use of AdjustPrivilegeToken 6 IoCs
description pid Process Token: SeDebugPrivilege 3032 84163f55a98e68a7e2cb11fe45ed507a.exe Token: SeBackupPrivilege 2868 vssvc.exe Token: SeRestorePrivilege 2868 vssvc.exe Token: SeAuditPrivilege 2868 vssvc.exe Token: SeDebugPrivilege 688 mstwain32.exe Token: SeDebugPrivilege 688 mstwain32.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
pid Process 688 mstwain32.exe 688 mstwain32.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 3032 wrote to memory of 688 3032 84163f55a98e68a7e2cb11fe45ed507a.exe 31 PID 3032 wrote to memory of 688 3032 84163f55a98e68a7e2cb11fe45ed507a.exe 31 PID 3032 wrote to memory of 688 3032 84163f55a98e68a7e2cb11fe45ed507a.exe 31 PID 3032 wrote to memory of 688 3032 84163f55a98e68a7e2cb11fe45ed507a.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\84163f55a98e68a7e2cb11fe45ed507a.exe"C:\Users\Admin\AppData\Local\Temp\84163f55a98e68a7e2cb11fe45ed507a.exe"1⤵
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Windows\mstwain32.exe"C:\Windows\mstwain32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\84163f55a98e68a7e2cb11fe45ed507a.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 use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- System policy modification
PID:688
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:2868
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
312KB
MD584163f55a98e68a7e2cb11fe45ed507a
SHA1b35d3f9852ebde4c7d030a9853121e2e930a7a42
SHA2562dd30e532f23c591e582f184dc59a2c9a0691bbfe10183af875c21313c44d436
SHA512b22c25ecd03d0c861016bfe75afcfbe46b43e5044d00bb65c384a321335a9ae353998ed3ad965dc1fe88d3324252723fce3b46892c71bb52e5910b597439cb13