Analysis
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max time kernel
159s -
max time network
169s -
platform
windows7_x64 -
resource
win7-20220812-en -
resource tags
arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system -
submitted
26-11-2022 13:01
Static task
static1
Behavioral task
behavioral1
Sample
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe
Resource
win7-20220812-en
Behavioral task
behavioral2
Sample
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe
Resource
win10v2004-20221111-en
General
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Target
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe
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Size
192KB
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MD5
be401dfec4ab64cb6e5450de30ba8d45
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SHA1
fcd8c847898c3d766edeec4506baaab8203c2215
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SHA256
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124
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SHA512
d64b4a319f88ea8cac7115f51bce660aa0bbaa3ab0274dc5351dbd41f6e729b3c0f26c1efa372f7863bb2eca4e4eb921007fa291d1d8b141abf8ad17fed35a4f
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SSDEEP
3072:imR49FBIrTtcgcCeVrzTAx1H6OfUUpuXnJ5iLl7ZaxzP72m9pZneyTvKqBE:imR4LQcgcBr+rUznJ5iR0N72hyVBE
Malware Config
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Drops startup file 1 IoCs
Processes:
explorer.exedescription ioc process File created C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dfb5f6db.exe explorer.exe -
Adds Run key to start application 2 TTPs 4 IoCs
Processes:
explorer.exedescription ioc process Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\dfb5f6d = "C:\\dfb5f6db\\dfb5f6db.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*fb5f6d = "C:\\dfb5f6db\\dfb5f6db.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\Run\dfb5f6db = "C:\\Users\\Admin\\AppData\\Roaming\\dfb5f6db.exe" explorer.exe Set value (str) \REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce\*fb5f6db = "C:\\Users\\Admin\\AppData\\Roaming\\dfb5f6db.exe" explorer.exe -
Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
Processes:
flow ioc 3 ip-addr.es 6 myexternalip.com 8 myexternalip.com -
Interacts with shadow copies 2 TTPs 1 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
Processes:
vssadmin.exepid process 1468 vssadmin.exe -
Suspicious behavior: MapViewOfSection 2 IoCs
Processes:
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exeexplorer.exepid process 884 cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe 940 explorer.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vssvc.exedescription pid process Token: SeBackupPrivilege 432 vssvc.exe Token: SeRestorePrivilege 432 vssvc.exe Token: SeAuditPrivilege 432 vssvc.exe -
Suspicious use of WriteProcessMemory 12 IoCs
Processes:
cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exeexplorer.exedescription pid process target process PID 884 wrote to memory of 940 884 cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe explorer.exe PID 884 wrote to memory of 940 884 cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe explorer.exe PID 884 wrote to memory of 940 884 cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe explorer.exe PID 884 wrote to memory of 940 884 cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe explorer.exe PID 940 wrote to memory of 1688 940 explorer.exe svchost.exe PID 940 wrote to memory of 1688 940 explorer.exe svchost.exe PID 940 wrote to memory of 1688 940 explorer.exe svchost.exe PID 940 wrote to memory of 1688 940 explorer.exe svchost.exe PID 940 wrote to memory of 1468 940 explorer.exe vssadmin.exe PID 940 wrote to memory of 1468 940 explorer.exe vssadmin.exe PID 940 wrote to memory of 1468 940 explorer.exe vssadmin.exe PID 940 wrote to memory of 1468 940 explorer.exe vssadmin.exe
Processes
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C:\Users\Admin\AppData\Local\Temp\cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe"C:\Users\Admin\AppData\Local\Temp\cd7cdb0397d0ba51a12f6718a7d9d0f0f83c8f512916dd5977c6555ce17ac124.exe"1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\syswow64\explorer.exe"C:\Windows\syswow64\explorer.exe"2⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Windows\syswow64\svchost.exe-k netsvcs3⤵
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C:\Windows\syswow64\vssadmin.exevssadmin.exe Delete Shadows /All /Quiet3⤵
- Interacts with shadow copies
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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memory/884-54-0x0000000000400000-0x0000000000455000-memory.dmpFilesize
340KB
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memory/940-56-0x0000000000000000-mapping.dmp
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memory/940-57-0x0000000075521000-0x0000000075523000-memory.dmpFilesize
8KB
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memory/940-58-0x0000000074A91000-0x0000000074A93000-memory.dmpFilesize
8KB
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memory/940-59-0x0000000000080000-0x00000000000A5000-memory.dmpFilesize
148KB
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memory/1468-61-0x0000000000000000-mapping.dmp
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memory/1688-60-0x0000000000000000-mapping.dmp
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memory/1688-63-0x0000000000080000-0x00000000000A5000-memory.dmpFilesize
148KB
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memory/1688-64-0x0000000000080000-0x00000000000A5000-memory.dmpFilesize
148KB