Resubmissions
10/03/2021, 22:41
210310-c4hgxpl6m6 1010/03/2021, 22:03
210310-atmrjjrp5x 1022/02/2021, 18:34
210222-mfkm1zpavj 10Analysis
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max time kernel
16s -
max time network
111s -
platform
windows10_x64 -
resource
win10v20201028 -
submitted
22/02/2021, 18:34
Static task
static1
Behavioral task
behavioral1
Sample
391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe
Resource
win7v20201028
Behavioral task
behavioral2
Sample
391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe
Resource
win10v20201028
General
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Target
391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe
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Size
75KB
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MD5
98b04a1cfdf18674315ec137733553a7
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SHA1
dd1cdb8782b5e08695b006393d1e8ab4e447556e
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SHA256
391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e
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SHA512
3c5d9884a922b4b974c3dbd0e6f73292b7bfa761a1e50cfb1af07752261cf1a8ea2520a13f28f7040d788bff3837c62c7a6595f03b1c1be5f8d4ea9848f09cb5
Malware Config
Extracted
C:\How To Restore Your Files.txt
http://gtmx56k4hutn3ikv.onion/blog/ff6b763849c49971c7ef8508064a3d8681529c7f45e532ff9e3d9ec13165263b/
http://gtmx56k4hutn3ikv.onion/
http://babukq4e2p4wu4iq.onion/login.php?id=l6Kr29xLbfnq1f0jzES55LLmmrZPd8
Signatures
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Deletes shadow copies 2 TTPs
Ransomware often targets backup files to inhibit system recovery.
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Modifies extensions of user files 7 IoCs
Ransomware generally changes the extension on encrypted files.
description ioc Process File opened for modification C:\Users\Admin\Pictures\UnprotectUninstall.tiff.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File renamed C:\Users\Admin\Pictures\RenameGrant.raw => C:\Users\Admin\Pictures\RenameGrant.raw.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File renamed C:\Users\Admin\Pictures\RenameReset.tif => C:\Users\Admin\Pictures\RenameReset.tif.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened for modification C:\Users\Admin\Pictures\RenameGrant.raw.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened for modification C:\Users\Admin\Pictures\RenameReset.tif.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened for modification C:\Users\Admin\Pictures\UnprotectUninstall.tiff 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File renamed C:\Users\Admin\Pictures\UnprotectUninstall.tiff => C:\Users\Admin\Pictures\UnprotectUninstall.tiff.babyk 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe -
Enumerates connected drives 3 TTPs 24 IoCs
Attempts to read the root path of hard drives other than the default C: drive.
description ioc Process File opened (read-only) \??\W: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\E: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\T: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\O: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\G: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\V: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\B: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\Q: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\U: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\S: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\F: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\H: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\L: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\X: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\N: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\M: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\R: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\A: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\K: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\Z: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\Y: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\I: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\P: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe File opened (read-only) \??\J: 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
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Interacts with shadow copies 2 TTPs 2 IoCs
Shadow copies are often targeted by ransomware to inhibit system recovery.
pid Process 2916 vssadmin.exe 3120 vssadmin.exe -
Suspicious behavior: EnumeratesProcesses 2 IoCs
pid Process 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
description pid Process Token: SeBackupPrivilege 740 vssvc.exe Token: SeRestorePrivilege 740 vssvc.exe Token: SeAuditPrivilege 740 vssvc.exe -
Suspicious use of WriteProcessMemory 8 IoCs
description pid Process procid_target PID 4032 wrote to memory of 2796 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe 75 PID 4032 wrote to memory of 2796 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe 75 PID 2796 wrote to memory of 2916 2796 cmd.exe 77 PID 2796 wrote to memory of 2916 2796 cmd.exe 77 PID 4032 wrote to memory of 3676 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe 80 PID 4032 wrote to memory of 3676 4032 391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe 80 PID 3676 wrote to memory of 3120 3676 cmd.exe 82 PID 3676 wrote to memory of 3120 3676 cmd.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe"C:\Users\Admin\AppData\Local\Temp\391cfcd153881743556f76de7bbca5b19857f8b69a6f6f6dfde6fd9b06c17f5e.exe"1⤵
- Modifies extensions of user files
- Enumerates connected drives
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:4032 -
C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:2796 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:2916
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C:\Windows\System32\cmd.exe"C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet2⤵
- Suspicious use of WriteProcessMemory
PID:3676 -
C:\Windows\system32\vssadmin.exevssadmin.exe delete shadows /all /quiet3⤵
- Interacts with shadow copies
PID:3120
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C:\Windows\system32\vssvc.exeC:\Windows\system32\vssvc.exe1⤵
- Suspicious use of AdjustPrivilegeToken
PID:740