General
- Target Riva-s C2 internel V2.rar
- Size 1.1MB
- Sample260415-2glensbs9n
- SHA256 ca180feb4743e60a5ae52e4543be645b986dfbb0cc9f05e5f8e1a38e2483922d
- MD5 01e87a168fd5b45ae2466fbc63cb9d10
- SHA1 ef86b877e1a6cac20d831c5725c8051b527166cd
- SHA512 2797d8fd874cfd87d949151d264a9da0511efe77b8f9953dc602944c3a8b751434087a21d3e1c482442f3cf2b1ee472144728839a245644f7b89c1dac852c3e4
- SSDEEP 24576:pwI1uKl1KVjMIQMB7jin8NlabeiyMnBYL7g0XAWuqG:pwIfqjdQsC8rldMnBYL7hXAWuqG
- TLSH T14045335E38392B12C108D41677E924EC74DE1D0ACCACE30B6BE53531BD69A3DC589EE6
- MD5 SHA1 SHA512 SSDEEP TLSH
Static task
static1
Behavioral task
behavioral1
Sample
Riva-s C2 internel V2.rar
Resource
win10v2004-20260130-en
34 signatures
900 seconds
Behavioral task
behavioral2
Sample
Riva-s C2 internel V2.rar
Resource
win11-20260130-en
3 signatures
900 seconds
Malware Config
Targets
-
- Target Riva-s C2 internel V2.rar
- Size 1.1MB
- SHA256 ca180feb4743e60a5ae52e4543be645b986dfbb0cc9f05e5f8e1a38e2483922d
- MD5 01e87a168fd5b45ae2466fbc63cb9d10
- SHA1 ef86b877e1a6cac20d831c5725c8051b527166cd
- SHA512 2797d8fd874cfd87d949151d264a9da0511efe77b8f9953dc602944c3a8b751434087a21d3e1c482442f3cf2b1ee472144728839a245644f7b89c1dac852c3e4
- SSDEEP 24576:pwI1uKl1KVjMIQMB7jin8NlabeiyMnBYL7g0XAWuqG:pwIfqjdQsC8rldMnBYL7hXAWuqG
- TLSH T14045335E38392B12C108D41677E924EC74DE1D0ACCACE30B6BE53531BD69A3DC589EE6
- MD5 SHA1 SHA512 SSDEEP TLSH
Downloads MZ/PE file
Checks computer location settings
Looks up country code configured in the registry, likely geofence.
Executes dropped EXE
Loads dropped DLL
Modifies file permissions
Stops running service(s)
Checks installed software on the system
Looks up Uninstall key entries in the registry to enumerate software on the system.
Contacts third-party web service commonly abused for C2
Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.
Drops file in System32 directory
Suspicious use of SetThreadContext