MALICIOUS — ae92171d98e8bb5ca751ff412b5ec4709916643fb149630ac46d14a716e438cd

MALICIOUS — ae92171d98e8bb5ca751ff412b5ec4709916643fb149630ac46d14a716e438cd is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vobfus family. 5 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

• SHA-256: ae92171d98e8bb5ca751ff412b5ec4709916643fb149630ac46d14a716e438cd
• SHA-1: 33ebe7392ab1c83bf71dd8df940dca6ed750c4bd
• MD5: c56e8ab826e06809970e833873bc636c
• imphash: 7a75c34cd111a7e772c5476adecae436
• ssdeep: 1536:2yPIldYhpYcg30f8kX8PsHy244nDUnBC2U6w:VIEhWcgEf8kX8PsHy244nDUnBC2M
• TLSH: T15A40DED595488C29E15DE82F99324F3D058CCD724E2C7E01CC1A7BAE2BDB8B32715A58
• Submitted as: ae92171d98e8bb5ca751ff412b5ec4709916643fb149630ac46d14a716e438cd
• File type: pe · Size: 172032 bytes
• Verdict: malicious (100/100) · Family: Vobfus

Detections (5 of 56 engines)

• ClamAV (daily): Win.Trojan.VB-1220
• Microsoft Defender: Worm:Win32/Vobfus!pz
• Emsisoft (Emergency Kit): Gen:Variant.Symmi.28795
• Trellix Stinger (McAfee): Downloader-CJX.gen.j
• Kaspersky (KVRT): Worm.Win32.WBNA.ipa

MITRE ATT&CK

• T1547.001
• T1543.003
• T1112
• T1105

Why this verdict

The malicious score of 100/100 is the fusion of 13 weighted signals:

• ClamAV (daily) flagged Win.Trojan.VB-1220 (rule Win.Trojan.VB-1220) - engine signal, weight 0.90, confidence 0.95
• 1 behavioral detection(s) across 1 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.60, confidence 0.90
• Microsoft Defender flagged Worm:Win32/Vobfus!pz (rule Worm:Win32/Vobfus!pz) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.Symmi.28795 (rule Gen:Variant.Symmi.28795) - engine signal, weight 0.55, confidence 0.85
• Trellix Stinger (McAfee) flagged Downloader-CJX.gen.j (rule Downloader-CJX.gen.j) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged Worm.Win32.WBNA.ipa (rule Worm.Win32.WBNA.ipa) - engine signal, weight 0.55, 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 2 external host(s) and 17 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• Anti-analysis: T1497.001, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
• 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
• Memory forensics: 2 finding(s) elsewhere in the guest, not attributed to this sample, e.g. SSDT hook (rule windows.ssdt.SSDT) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

59633 behavior events · 3 ATT&CK techniques · 5 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• ns1.ns1.codeconline.biz
• ns1.player1523.com
• c.pki.goog
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org
• default.exp-tas.com
• ctldl.windowsupdate.com
• update.googleapis.com
• login.live.com
• desktop-hsgcbep
• v20.events.data.microsoft.com
• config.edge.skype.com
• windows.msn.com
• officeclient.microsoft.com
• www.msn.com

Dropped files

• C:\Users\analyst\zaadig.exe - 7e7d217cf78f6ea6362c4bc4ddf2d4569b50b27ed92997fb59e5d2b194f2c390
• a6feb3dfcbed6ecbcfc45f74502e3a6c63c797a013bfbe77de06929eb92e39e5 - a6feb3dfcbed6ecbcfc45f74502e3a6c63c797a013bfbe77de06929eb92e39e5
• 9ab092685c96fd525c324c594fceb19279453ad7b0754d016f38b5e88fb2c12e - 9ab092685c96fd525c324c594fceb19279453ad7b0754d016f38b5e88fb2c12e
• 0d0aa1bbd93bcdc9c73d658a4938e3e9e83dd7590503665765f29249801a9cfb - 0d0aa1bbd93bcdc9c73d658a4938e3e9e83dd7590503665765f29249801a9cfb
• de5358fe2e144178147218d7c85f8b834fca0d56fb1bce7f3cfdc147468deb5a - de5358fe2e144178147218d7c85f8b834fca0d56fb1bce7f3cfdc147468deb5a

Embedded URLs

• 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/afb4c1e7-5ab6-4274-bbe6-fa4639876844/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
• http://203.26.79.13/filestreamingservice/files/afb4c1e7-5ab6-4274-bbe6-fa4639876844?P1=1787350513&P2=404&P3=2&P4=hPXnleCiB9KFQ4NRbqYeeghmod3YwFu3rr9u1dSWiMPau3fH8ayNmoxsXeGYw0HQYtbTaDTHKbjAVSOC%2b0lU%2bA%3d%3d&cacheHostOrigin=tlu.dl.delivery.mp.microsoft.com
• http://203.26.79.13/filestreamingservice//files/6c2dbffa-872a-4f74-b39c-0ab782eea5bf/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
• http://203.26.79.13/filestreamingservice/files/6c2dbffa-872a-4f74-b39c-0ab782eea5bf?P1=1787354299&P2=404&P3=2&P4=ElLaAGSqvHE%2fud1oOy9cHTUmePvNSsovOeUG0kb6%2bBU6%2b%2bMYS0cpPMllI2X7kLzG0p4YKwEcdFNAK2Q5UFj2GA%3d%3d&cacheHostOrigin=tlu.dl.delivery.mp.microsoft.com
• http://c.pki.goog/r/r1.crl
• http://x2.c.lencr.org/
• http://ye.c.lencr.org/
• http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
• http://yr.c.lencr.org/

Embedded domains

• ns1.ns1.codeconline.biz
• ns1.player1523.com
• x1.c.lencr.org
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org
• default.exp-tas.com

Embedded IP addresses

• 51.116.246.105
• 4.230.171.124
• 48.211.4.16
• 52.230.60.54
• 4.144.132.223
• 74.179.77.164
• 20.184.175.21
• 74.178.76.128
• 20.165.94.63
• 172.64.154.167
• 20.184.175.7
• 4.150.223.113
• 172.170.180.133
• 104.208.16.94
• 51.11.192.48
• 172.178.240.162
• 203.26.79.13
• 13.89.179.15
• 51.11.192.51
• 52.168.112.66
• 172.178.240.161
• 52.148.114.188
• 172.172.255.216
• 72.153.5.136
• 52.110.12.4

More Vobfus samples · Latest analyzed threats · ATT&CK coverage

Analyzed on MalwareAnalyzer by Cyble · Open interactive report