MALICIOUS — 57ce4d3a6b80c5f8b7e9f7eb1b499c8c3242e9d0bb62bc8fe75a4f3abf76d82b

MALICIOUS — 57ce4d3a6b80c5f8b7e9f7eb1b499c8c3242e9d0bb62bc8fe75a4f3abf76d82b is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (97/100), attributed to the Bulz family. 4 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 57ce4d3a6b80c5f8b7e9f7eb1b499c8c3242e9d0bb62bc8fe75a4f3abf76d82b
• SHA-1: 708afe840b6f95fce75394574889c2ec75716076
• MD5: d96efcf6d457c878800d209dce5ee2ff
• imphash: b2adac104754b17b97f99c3247292cf4
• ssdeep: 12288:1s+Lr5S/S8/88M/9j1UwfwKAoFTwIVDLGXPCBM0VZmVIyh2eFde+lI59gZQba8l:1sNBM/9/fwK/FTwfCBM0VZeg1
• TLSH: T1D84F7DAA060AF751F0AA9B805CA12E1EE17DFAFE60BF1DCD0056D01F6BB419B744C494
• Submitted as: 57ce4d3a6b80c5f8b7e9f7eb1b499c8c3242e9d0bb62bc8fe75a4f3abf76d82b
• File type: pe · Size: 712704 bytes
• Verdict: malicious (97/100) · Family: Bulz

Detections (4 of 56 engines)

• capa (capabilities): capability:collection/keylog
• ClamAV (daily): Win.Trojan.Bulz-9889567-0
• YARA: Yara-Rules community: YR_AntiDebug_Checks
• LIEF (executable format parser): lief:invalid-authenticode

MITRE ATT&CK

• T1056.001
• T1112

Why this verdict

The malicious score of 97/100 is the fusion of 8 weighted signals:

• ClamAV (daily) flagged Win.Trojan.Bulz-9889567-0 (rule Win.Trojan.Bulz-9889567-0) - engine signal, weight 0.90, confidence 0.95
• capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
• Contacted 21 external host(s) and 9 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
• YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70
• LIEF (executable format parser) flagged lief:invalid-authenticode (rule lief:invalid-authenticode) - engine signal, weight 0.35, confidence 0.70
• capa (capabilities) flagged capability:collection/keylog (rule capability:collection/keylog) - engine signal, weight 0.35, confidence 0.70
• 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)

14644 behavior events · 1 ATT&CK techniques · 0 dropped files.

Runtime network

• www.msftconnecttest.com
• rb.symcd.com
• rb.symcb.com
• inference.location.live.net
• 76.0.240.10.in-addr.arpa.
• 1.0.240.10.in-addr.arpa.
• 251.0.0.224.in-addr.arpa.
• 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.
• 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.
• settings-win.data.microsoft.com
• tas02.sls.update.microsoft.com
• v10.events.data.microsoft.com
• 63.94.165.20.in-addr.arpa.
• 212.101.155.57.in-addr.arpa.
• 108.223.150.4.in-addr.arpa.
• _ldap._tcp.dc._msdcs.WORKGROUP
• _VLMCS._TCP
• ecs.office.com

Embedded URLs

• http://www.microsoft.com/pki/certs/MicrosoftTimeStampPCA.crt0
• http://www.microsoft.com/pki/certs/MicCodSigPCA_08-31-2010.crt0
• http://crl.microsoft.com/pki/crl/products/microsoftrootcert.crl0T
• http://office.microsoft.com
• http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt0
• http://www.microsoft.com/pki/certs/MicTimStaPCA_2010-07-01.crt0
• http://www.msftconnecttest.com/connecttest.txt
• http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
• http://rb.symcb.com/rb.crl

Embedded domains

• crl.microsoft.com
• www.microsoft.com
• office.microsoft.com
• x1.c.lencr.org
• x2.c.lencr.org
• ye.c.lencr.org
• yr.c.lencr.org
• _ldap._tcp.dc._msdcs.workgroup
• _vlmcs._tcp

Embedded IP addresses

• 92.223.78.30
• 20.165.94.63
• 85.210.193.152
• 20.42.65.85
• 57.154.63.210
• 51.116.246.104
• 72.154.7.107
• 85.210.196.11
• 172.233.212.90
• 57.155.101.212
• 20.89.1.8
• 172.215.188.232
• 13.89.179.15
• 40.79.150.120
• 57.155.104.224
• 172.215.188.225
• 40.84.85.40
• 203.26.79.13
• 20.42.179.192
• 4.247.188.224
• 52.123.252.203
• 20.42.179.204
• 4.150.223.103
• 4.150.223.97
• 48.211.4.16

File paths

• F:\Office\Target\x86\ship\postc2r\x-none\msqry32.pdb
• H:\:c:
• W:\:l:
• T:\:a:i:n:v:{:
• X:\:l:p:t:x:

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report