MALICIOUS — f4c0cfa2eeac72f5c9677715471cb19c357c3823ebc45e7ce5686ffecb42aedf

MALICIOUS — f4c0cfa2eeac72f5c9677715471cb19c357c3823ebc45e7ce5686ffecb42aedf is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Amhfbyrbndc family. 8 of 56 detection engines flagged it, exhibiting 4 ATT&CK techniques.

Identification

• SHA-256: f4c0cfa2eeac72f5c9677715471cb19c357c3823ebc45e7ce5686ffecb42aedf
• SHA-1: 8999526b754f8a87535dee4ea801fba2bf1bfb10
• MD5: 1b830d35dc9259c47d3fd957ac13536e
• imphash: 0c75723fedd9c27bef321a9d944591c8
• ssdeep: 384:fo9q5pG7Vbjz0QhuvmtSh/6kTMklKBcdDtI7JliSwlmerfVjuujQA+CJwN:GqDSbP0w+mFko/B8I7JUSiVfVyLA+KQ
• TLSH: T1EB2CBF9D11D291BDEBFF812D2846AA1F1CD2E13D6D228E485D14A6692CFC7F378C2811
• Submitted as: f4c0cfa2eeac72f5c9677715471cb19c357c3823ebc45e7ce5686ffecb42aedf
• File type: pe · Size: 25196 bytes
• Verdict: malicious (100/100) · Family: Amhfbyrbndc

Detections (8 of 56 engines)

• MalwareAnalyser heuristics (entropy/packer): UPX
• ClamAV (daily): Win.Malware.Amhfbyrbndc-9891058-0
• YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
• Detect It Easy (packer/type): DIE:Microsoft Linker
• Microsoft Defender: Trojan:Win32/Androm!pz
• Emsisoft (Emergency Kit): Gen:Trojan.Heur.D.bmIfbyRbNDc
• Trellix Stinger (McAfee): Agent-FQY!1B830D35DC92
• Kaspersky (KVRT): HEUR:Trojan.Win32.Agent.gen

MITRE ATT&CK

• T1071.001
• T1543.003
• T1112
• T1105

Why this verdict

The malicious score of 100/100 is the fusion of 15 weighted signals:

• ClamAV (daily) flagged Win.Malware.Amhfbyrbndc-9891058-0 (rule Win.Malware.Amhfbyrbndc-9891058-0) - engine signal, weight 0.90, confidence 0.95
• Microsoft Defender flagged Trojan:Win32/Androm!pz (rule Trojan:Win32/Androm!pz) - engine signal, weight 0.55, confidence 0.85
• Emsisoft (Emergency Kit) flagged Gen:Trojan.Heur.D.bmIfbyRbNDc (rule Gen:Trojan.Heur.D.bmIfbyRbNDc) - engine signal, weight 0.55, confidence 0.85
• Trellix Stinger (McAfee) flagged Agent-FQY!1B830D35DC92 (rule Agent-FQY!1B830D35DC92) - engine signal, weight 0.55, confidence 0.85
• Kaspersky (KVRT) flagged HEUR:Trojan.Win32.Agent.gen (rule HEUR:Trojan.Win32.Agent.gen) - 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
• Contacted 24 external host(s) and 10 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
• communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
• Packing/obfuscation: UPX, high-entropy-sections:UPX1, Microsoft Linker - static signal, weight 0.25, confidence 0.55
• 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)

1997 behavior events · 2 ATT&CK techniques · 2 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• test.besthotel360.com
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa.
• 252.0.0.224.in-addr.arpa.
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa.
• desktop-hsgcbep
• update.googleapis.com
• self.events.data.microsoft.com
• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 251.0.0.224.in-addr.arpa
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 1.0.240.10.in-addr.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• settings-win.data.microsoft.com
• 192.179.42.20.in-addr.arpa
• nexusrules.officeapps.live.com

Dropped files

• C:\Users\analyst\AppData\Local\Temp\fMsrl.exe - d6fe07001702eaa97b96a255b73842c5f30afd123fd94d33c8638b78066e6f36
• e2f400270b1e11d75a842454dbe18e549b8bbd0975f86f854d088ae1d7b4ed79 - e2f400270b1e11d75a842454dbe18e549b8bbd0975f86f854d088ae1d7b4ed79

Embedded URLs

• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded domains

• test.besthotel360.com
• x1.c.lencr.org
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org

Embedded IP addresses

• 20.42.65.89
• 20.42.179.192
• 20.184.175.0
• 20.184.175.22
• 72.154.7.102
• 162.159.142.9
• 52.148.114.188
• 72.153.5.61
• 72.145.35.96
• 20.184.175.17
• 4.207.44.68
• 52.110.12.1
• 203.26.79.13
• 52.168.117.171
• 172.172.255.217
• 20.184.175.8
• 57.154.63.210
• 85.210.196.11
• 20.42.73.26
• 20.42.179.204
• 52.168.117.168
• 72.145.35.97
• 172.172.255.216
• 74.178.76.44
• 4.150.223.115

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report