MALICIOUS — 99877afbc83e9524c9db80024c96d2afc25ebdadd8bbb4ba65304d96fc7db8f6
MALICIOUS — 99877afbc83e9524c9db80024c96d2afc25ebdadd8bbb4ba65304d96fc7db8f6 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 4 of 55 detection engines flagged it, exhibiting 4 ATT&CK techniques.
Identification
- SHA-256:
99877afbc83e9524c9db80024c96d2afc25ebdadd8bbb4ba65304d96fc7db8f6 - SHA-1:
3117260d2a5bab7a3ec5a08e9f12ee9875c07489 - MD5:
dc6a3f7eaa5a465f8f7878f62adbf041 - imphash:
8262fdc48a399d7b8190a3af463a61f7 - ssdeep:
3072:XRlNSIcEGROnF6gPmCXMNKiqMNMZZZZWMkIJgX:ngptEMNIMNHYy - TLSH:
T131401795FDEDE6B5D165D60789401D6C369EF79AFEAA573023BA490E00D23E3202432C - Submitted as: 99877afbc83e9524c9db80024c96d2afc25ebdadd8bbb4ba65304d96fc7db8f6
- File type: pe · Size: 180224 bytes
- Verdict: malicious (100/100) · Family: Vobfus
Detections (4 of 55 engines)
- ClamAV (daily): Win.Trojan.Vobfus-45
- Microsoft Defender: Worm:Win32/Vobfus.FI
- Trellix Stinger (McAfee): W32/Autorun.worm.ru
- Kaspersky (KVRT): Trojan.Win32.Vobfus.inz
MITRE ATT&CK
Why this verdict
The malicious score of 100/100 is the fusion of 10 weighted signals:
- ClamAV (daily) flagged Win.Trojan.Vobfus-45 (rule
Win.Trojan.Vobfus-45) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Memory forensics: 2 finding(s), e.g. SSDT hook (rule
windows.ssdt.SSDT) - memory signal, weight 0.50, confidence 0.85 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Observed at runtime: Windows Service (T1543.003) (rule
Windows Service) - dynamic signal, weight 0.40, confidence 0.90 - Contacted 31 external host(s) at runtime (27 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1082, T1622, T1497.001 - dynamic signal, weight 0.40, confidence 0.75
- Embedded network infrastructure: http://vbnet.mvps.org/index.html, http://www.Planet-Source-Code.com/vb/, http://vb.mvps.org/ - static signal, weight 0.35, confidence 0.60
- Dropped 1 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
- Observed at runtime: Modify Registry (T1112) (rule
Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Dynamic analysis (windows)
42109 behavior events · 3 ATT&CK techniques · 4 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ns1.musiczipz.com
- ns1.musicmixa.net
- ns1.musicmixa.org
- ns1.musicmixb.co
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
Dropped files
- C:\Users\analyst\joosi.exe -
84e8d787323b664ad61944ec36afa107c22458c458338b3ee741842fde5aa2de - cbb27d22edc464b2e8cd819d08c3e5bf85866ac69c06f59fab773e5e65b45716 -
cbb27d22edc464b2e8cd819d08c3e5bf85866ac69c06f59fab773e5e65b45716 - 1ff41c81524fe41eed2d8244db0fb35841362ba1fe6e7f3c7b6a952e2299339c -
1ff41c81524fe41eed2d8244db0fb35841362ba1fe6e7f3c7b6a952e2299339c - 5c5c77edccdf2f175aedce09e59793d065b3a36cbc16ee166040525089e2c554 -
5c5c77edccdf2f175aedce09e59793d065b3a36cbc16ee166040525089e2c554
Embedded URLs
- http://vbnet.mvps.org/index.html
- http://www.Planet-Source-Code.com/vb/
- http://vb.mvps.org/
- http://allapi.mentalis.org/apilist/apilist.php
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787794572&P2=404&P3=2&P4=WdIWJPW%2foNKLgL93L4p7tDyRHyH6pMmzXHdfFM%2bEnXTQgdtJB%2fK%2fT0ANLO2GG0YjjYEUBFvJKWknmT9zcS2gIQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787794618&P2=404&P3=2&P4=M4GGsskgED5gcBWqroeFLonoi3pDNXhWHV9VT%2fmcv2gvBqu7Vf6gENVP8leRh7jVqlRgvVkqrUGEtjFxk3JKEQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/9c0462dd-f6cd-4ff7-a7ac-708d0e9dadc5/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/9c0462dd-f6cd-4ff7-a7ac-708d0e9dadc5?P1=1787191261&P2=404&P3=2&P4=OPwr73vtIM4fP8tfwUaUsX5dQQLluGbJPmgApDAH0oVN574EQopfx%2bi9uQBHrOCazhVqgAbz%2by5b8VPDkUVgyQ%3d%3d&cacheHostOrigin=1D.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/b56480f9-8215-4de7-ba7e-8e690088d21d/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/b56480f9-8215-4de7-ba7e-8e690088d21d?P1=1787190914&P2=404&P3=2&P4=NY9SjriHIz61CQSHnzSDUDUp%2fayXBLWirn%2bHVnoguRSWnYv81Q85gajwk0QjTCJx7Jm1qX5dzH1hyGrX9c6y8Q%3d%3d&cacheHostOrigin=1D.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- vbnet.mvps.org
- vb.mvps.org
- allapi.mentalis.org
- www.planet-source-code.com
- ns1.musiczipz.com
- ns1.musicmixa.net
- ns1.musicmixa.org
- ns1.musicmixb.co
Embedded IP addresses
- 52.123.252.247
- 52.168.117.174
- 4.247.188.233
- 4.230.171.124
- 20.247.184.142
- 74.178.76.128
- 4.150.223.113
- 135.232.92.97
- 92.223.78.30
- 52.123.128.14
- 20.231.239.246
- 40.99.133.226
- 52.123.129.14
- 40.99.134.18
- 4.150.223.99
- 172.178.240.163
- 203.26.79.13
- 20.165.94.46
- 135.234.160.244
- 52.148.114.188
- 135.233.45.221
- 72.154.7.108
- 48.200.63.27
- 20.184.175.10
- 20.42.65.91
File paths
- C:\Windows\system32\msvbvm60.dll\3
- C:\Program
More Vobfus samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report