MALICIOUS — 1bbcaf8758da416ece453f7df3c92e03a836d87ffccdb3f9969f43c25b31100e

MALICIOUS — 1bbcaf8758da416ece453f7df3c92e03a836d87ffccdb3f9969f43c25b31100e is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Vtflooder family. 8 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 1bbcaf8758da416ece453f7df3c92e03a836d87ffccdb3f9969f43c25b31100e
• SHA-1: 7f12de885fe915474be65765efc2947f7accc748
• MD5: 05ce16633a532a49819d2b8dfbf828ad
• imphash: 8c9bb9d690553503983713582e1e58f7
• ssdeep: 96:fv110GxW2FjJYPmVI+V9IGjSJGs+K1C+Rv2aKb43dkU:fv110GPdYPmVI+UGj8C+RPj3dkU
• TLSH: T1EE205C676B21895CD9DD19E82748A2CDD6A2492F28748E602931903B647C17F7BFB10C
• Submitted as: 1bbcaf8758da416ece453f7df3c92e03a836d87ffccdb3f9969f43c25b31100e
• File type: pe · Size: 8192 bytes
• Verdict: malicious (100/100) · Family: Vtflooder

Detections (8 of 56 engines)

• MalwareAnalyser heuristics (entropy/packer): UPX
• ClamAV (daily): Win.Malware.Vtflooder-6722904-1
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Detect It Easy (packer/type): DIE:Microsoft Linker
• Microsoft Defender: Trojan:Win32/Vflooder
• Emsisoft (Emergency Kit): Gen:Variant.Razy.482569
• Trellix Stinger (McAfee): Generic-FAVK!05CE16633A53
• Kaspersky (KVRT): Trojan.Win32.Vtflooder.cft

MITRE ATT&CK

• T1543.003
• T1112

Why this verdict

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

• ClamAV (daily) flagged Win.Malware.Vtflooder-6722904-1 (rule Win.Malware.Vtflooder-6722904-1) - engine signal, weight 0.90, confidence 0.95
• Microsoft Defender flagged Trojan:Win32/Vflooder (rule Trojan:Win32/Vflooder) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Variant.Razy.482569 (rule Gen:Variant.Razy.482569) - engine signal, weight 0.55, confidence 0.85
• Trellix Stinger (McAfee) flagged Generic-FAVK!05CE16633A53 (rule Generic-FAVK!05CE16633A53) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged Trojan.Win32.Vtflooder.cft (rule Trojan.Win32.Vtflooder.cft) - engine signal, weight 0.55, confidence 0.85
• YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
• Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
• 1 behavioral detection(s) across 1 rule(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
• Contacted 2 external host(s) and 21 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• Detect It Easy (packer/type) flagged DIE:Microsoft Linker (rule DIE:Microsoft Linker) - engine signal, weight 0.35, confidence 0.70
• MalwareAnalyser heuristics (entropy/packer) flagged UPX (rule UPX) - engine signal, weight 0.35, confidence 0.70
• Packing/obfuscation: UPX, high-entropy-sections:UPX1, Microsoft Linker - static signal, weight 0.25, confidence 0.55
• Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90

Dynamic analysis (windows)

18792 behavior events · 2 ATT&CK techniques · 1 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• twitter.com
• www.virustotal.com
• c.pki.goog
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org
• ctldl.windowsupdate.com
• update.googleapis.com
• login.live.com
• desktop-hsgcbep
• v20.events.data.microsoft.com
• config.edge.skype.com
• windows.msn.com
• www.msn.com
• officeclient.microsoft.com
• odc.officeapps.live.com

Dropped files

• a2ede00ba0a9179d550e645358c106dfb0594543c19801fa7c6a08e868ee35dd - a2ede00ba0a9179d550e645358c106dfb0594543c19801fa7c6a08e868ee35dd

Embedded URLs

• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl
• http://twitter.com/pidoras6
• http://www.virustotal.com/vtapi/v2/file/scan
• 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

• www.virustotal.com
• x1.c.lencr.org
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org

Embedded IP addresses

• 4.150.223.98
• 4.230.171.124
• 20.247.184.142
• 172.215.188.232
• 20.165.94.54
• 20.184.175.18
• 135.233.95.144
• 172.215.188.225
• 34.54.88.138
• 40.79.150.121
• 52.110.12.26
• 162.159.140.229
• 52.110.12.47
• 52.148.114.188
• 72.145.35.102

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report