Analysis
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max time kernel
188s -
max time network
190s -
platform
windows10-2004_x64 -
resource
win10v2004-20221111-en -
resource tags
arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system -
submitted
26-11-2022 17:51
Behavioral task
behavioral1
Sample
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Resource
win7-20221111-en
Behavioral task
behavioral2
Sample
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
Resource
win10v2004-20221111-en
General
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Target
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe
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Size
108KB
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MD5
7f153c69e1c47f2d2488db26caf1bb59
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SHA1
da6cba4f375d8a48c352b8324da69db6fc04533a
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SHA256
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc
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SHA512
8a4618b5919dc190c87715c5478bdf5b3256ba6990d3ffcd45f7466fca055412f6f2bd847252d00a63b981d9219ab2ac72f8b2f4e2b8cf9dbabd3cdd0c1c1523
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SSDEEP
3072:f1+MJKrUnFYY5z1i0Nmbi5fJBNFSg7out:FIrPj0NmWtNFSg7oS
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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Processes:
comxss32.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" comxss32.exe -
ModiLoader Second Stage 3 IoCs
Processes:
resource yara_rule behavioral2/memory/2252-133-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 behavioral2/memory/2252-137-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 behavioral2/memory/3780-138-0x0000000000400000-0x0000000000450000-memory.dmp modiloader_stage2 -
Executes dropped EXE 1 IoCs
Processes:
comxss32.exepid process 3780 comxss32.exe -
Processes:
resource yara_rule behavioral2/memory/2252-132-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral2/memory/2252-133-0x0000000000400000-0x0000000000450000-memory.dmp upx C:\Windows\comxss32.exe upx C:\Windows\comxss32.exe upx behavioral2/memory/2252-137-0x0000000000400000-0x0000000000450000-memory.dmp upx behavioral2/memory/3780-138-0x0000000000400000-0x0000000000450000-memory.dmp upx -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe -
Loads dropped DLL 4 IoCs
Processes:
comxss32.exepid process 3780 comxss32.exe 3780 comxss32.exe 3780 comxss32.exe 3780 comxss32.exe -
Adds Run key to start application 2 TTPs 2 IoCs
Processes:
comxss32.exedescription ioc process Key created \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ comxss32.exe Set value (str) \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\comxss32 = "C:\\Windows\\comxss32.exe" comxss32.exe -
Processes:
comxss32.exe8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" comxss32.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA comxss32.exe -
Drops file in Windows directory 4 IoCs
Processes:
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.execomxss32.exedescription ioc process File created C:\Windows\comxss32.exe 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe File opened for modification C:\Windows\comxss32.exe 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe File created C:\Windows\ntdtcstp.dll comxss32.exe File created C:\Windows\cmsetac.dll comxss32.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Suspicious use of AdjustPrivilegeToken 6 IoCs
Processes:
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exevssvc.execomxss32.exedescription pid process Token: SeDebugPrivilege 2252 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe Token: SeBackupPrivilege 5076 vssvc.exe Token: SeRestorePrivilege 5076 vssvc.exe Token: SeAuditPrivilege 5076 vssvc.exe Token: SeDebugPrivilege 3780 comxss32.exe Token: SeDebugPrivilege 3780 comxss32.exe -
Suspicious use of FindShellTrayWindow 1 IoCs
Processes:
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exepid process 2252 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe -
Suspicious use of SetWindowsHookEx 2 IoCs
Processes:
comxss32.exepid process 3780 comxss32.exe 3780 comxss32.exe -
Suspicious use of WriteProcessMemory 3 IoCs
Processes:
8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exedescription pid process target process PID 2252 wrote to memory of 3780 2252 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe comxss32.exe PID 2252 wrote to memory of 3780 2252 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe comxss32.exe PID 2252 wrote to memory of 3780 2252 8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe comxss32.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
comxss32.exedescription ioc process Set value (int) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA = "0" comxss32.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe"C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe"1⤵
- Checks computer location settings
- Checks whether UAC is enabled
- Drops file in Windows directory
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:2252 -
C:\Windows\comxss32.exe"C:\Windows\comxss32.exe" \melt "C:\Users\Admin\AppData\Local\Temp\8bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc.exe"2⤵
- UAC bypass
- Executes dropped EXE
- Loads dropped DLL
- 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:3780
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:5076
Network
MITRE ATT&CK Enterprise v6
Replay Monitor
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Downloads
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C:\Windows\cmsetac.dllFilesize
32KB
MD5d81f992bae959935a93cd8b5f571ad79
SHA10d6814467c3e5beb0e8e30780959e33cb0b5f784
SHA25613c3bff43668b4794e1763422634a11650ba6fd054b721b8028e827e8a269539
SHA512cf761462de6cb237f161b17b1d2d8575de2b4a405a2e8d746cd9973aad61ce88f73aaa95142abb8b9c34c4fe39df804fc69b9729700f530465bd3693c8e7457b
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C:\Windows\cmsetac.dllFilesize
32KB
MD5d81f992bae959935a93cd8b5f571ad79
SHA10d6814467c3e5beb0e8e30780959e33cb0b5f784
SHA25613c3bff43668b4794e1763422634a11650ba6fd054b721b8028e827e8a269539
SHA512cf761462de6cb237f161b17b1d2d8575de2b4a405a2e8d746cd9973aad61ce88f73aaa95142abb8b9c34c4fe39df804fc69b9729700f530465bd3693c8e7457b
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C:\Windows\comxss32.exeFilesize
108KB
MD57f153c69e1c47f2d2488db26caf1bb59
SHA1da6cba4f375d8a48c352b8324da69db6fc04533a
SHA2568bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc
SHA5128a4618b5919dc190c87715c5478bdf5b3256ba6990d3ffcd45f7466fca055412f6f2bd847252d00a63b981d9219ab2ac72f8b2f4e2b8cf9dbabd3cdd0c1c1523
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C:\Windows\comxss32.exeFilesize
108KB
MD57f153c69e1c47f2d2488db26caf1bb59
SHA1da6cba4f375d8a48c352b8324da69db6fc04533a
SHA2568bc24230a50e2864376c60ed35d70d5c6afc6f51083c28faef9e9a06e96fb5dc
SHA5128a4618b5919dc190c87715c5478bdf5b3256ba6990d3ffcd45f7466fca055412f6f2bd847252d00a63b981d9219ab2ac72f8b2f4e2b8cf9dbabd3cdd0c1c1523
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C:\Windows\ntdtcstp.dllFilesize
7KB
MD567587e25a971a141628d7f07bd40ffa0
SHA176fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA5126e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350
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C:\Windows\ntdtcstp.dllFilesize
7KB
MD567587e25a971a141628d7f07bd40ffa0
SHA176fcd014539a3bb247cc0b761225f68bd6055f6b
SHA256e6829866322d68d5c5b78e3d48dcec70a41cdc42c6f357a44fd329f74a8b4378
SHA5126e6de7aa02c48f8b96b06e5f1160fbc5c95312320636e138cc997ef3362a61bc50ec03db1f06292eb964cd71915ddb2ec2eb741432c7da44215a4acbb576a350
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memory/2252-132-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/2252-133-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/2252-137-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/3780-134-0x0000000000000000-mapping.dmp
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memory/3780-138-0x0000000000400000-0x0000000000450000-memory.dmpFilesize
320KB
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memory/3780-143-0x00000000022F0000-0x00000000022FE000-memory.dmpFilesize
56KB