MALICIOUS — Build.exe
MALICIOUS — Build.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Ircbot family. 6 of 51 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
84d06e7541bafcf499ac69d3ededa494556aea6c4af4f979f7b7493dbf3aaa76 - SHA-1:
fd086c23c09be49b7dfda55f16c18fed4d9f5294 - MD5:
456cfb514b8fcbddc775acd11a869d64 - imphash:
371d791ecf595e5569383b15a07646d7 - ssdeep:
3072:02KvTioGdqEfdV9y7J6bxhuM5nKLAcKso6rLXFxXKdrd4EA8M4MC:02KveoqLfTwkdhuM51cKsV3VIdrd4EJ - TLSH:
T1B349389A8679F8A9D5F8F5512E308C7FD952808F417B4D4C0B66E05AC2B82F3906877C - Submitted as: Build.exe
- File type: pe · Size: 401408 bytes
- Verdict: malicious (99/100) · Family: Ircbot
Detections (6 of 51 engines)
- MalwareAnalyser heuristics (entropy/packer): Unknown
- ClamAV (daily): {MD5}bin.trojan.ircbot.7998.UNOFFICIAL
- YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
- Detect It Easy (packer/type): DIE:Unknown
- Microsoft Defender: Backdoor:Win32/IRCbot
- Emsisoft (Emergency Kit): Backdoor.Ircbot.XF
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 9 weighted signals:
- ClamAV (daily) flagged {MD5}bin.trojan.ircbot.7998.UNOFFICIAL (rule
{MD5}bin.trojan.ircbot.7998.UNOFFICIAL) - engine signal, weight 0.90, confidence 0.95 - Microsoft Defender flagged Backdoor:Win32/IRCbot (rule
Backdoor:Win32/IRCbot) - engine signal, weight 0.55, confidence 0.85 - Emsisoft (Emergency Kit) flagged Backdoor.Ircbot.XF (rule
Backdoor.Ircbot.XF) - engine signal, weight 0.55, confidence 0.85 - Contacted 31 external host(s) at runtime (3 HTTP) - network signal, weight 0.40, confidence 0.80
- YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule
JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70 - Detect It Easy (packer/type) flagged DIE:Unknown (rule
DIE:Unknown) - engine signal, weight 0.35, confidence 0.70 - Embedded network infrastructure: http://illusion.cup.su - static signal, weight 0.35, confidence 0.60
- Packing/obfuscation: Unknown - 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)
14 behavior events · 1 ATT&CK techniques · 0 dropped files.
Runtime network
- www.msftconnecttest.com
- inference.location.live.net
- v10.events.data.microsoft.com
- login.live.com
- settings-win.data.microsoft.com
- v20.events.data.microsoft.com
- desktop-hsgcbep
- fd.api.iris.microsoft.com
- config.edge.skype.com
- licensing.mp.microsoft.com
- windows.msn.com
- www.msn.com
- officeclient.microsoft.com
- odc.officeapps.live.com
- assets.msn.com
- tsfe.trafficshaping.dsp.mp.microsoft.com
- watson.events.data.microsoft.com
- www.bing.com
- edge.microsoft.com
- ecs.office.com
Embedded URLs
- http://illusion.cup.su
- http://www.msftconnecttest.com/connecttest.txt
Embedded domains
- illusion.cup.su
- inference.location.live.net
- oneclient.sfx.ms
Embedded IP addresses
- 23.40.52.209
- 4.150.223.100
- 52.168.112.66
- 4.247.188.224
- 150.171.22.17
- 20.247.185.124
- 20.190.142.165
- 4.230.171.124
- 72.154.7.248
- 4.150.223.103
- 135.234.160.244
- 23.33.238.114
- 23.40.52.174
- 13.89.179.15
- 52.168.112.67
- 135.149.173.69
- 51.105.71.136
- 23.33.238.173
- 23.198.40.44
- 23.33.238.135
- 23.221.133.185
- 72.145.35.99
- 92.223.78.30
- 52.148.114.188
- 20.50.201.204
Registry keys
- HKEY_CURRENT_USER\Software\Illusion
More Ircbot samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report