MALICIOUS — 8cd700a4f61266143b9985673bee2c4ae1cbd3c9ca688f46579fcaaa609a4caf

MALICIOUS — 8cd700a4f61266143b9985673bee2c4ae1cbd3c9ca688f46579fcaaa609a4caf is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Bulz family. 5 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: 8cd700a4f61266143b9985673bee2c4ae1cbd3c9ca688f46579fcaaa609a4caf
SHA-1: cad36b1f5750404296936bce5a4e5c4b2d7a819d
MD5: e096484b4954b802949e8559ea619ba7
imphash: b2adac104754b17b97f99c3247292cf4
ssdeep: 49152:1sNBk9/fw2BwfmM0fjdkUWoS5r+feiZ9psKOdgCiHC+Lvge+R4+:1sNi9Xwgwfoh4oSN4eirps9drii+rge
TLSH: T1485B9E5B0616B794F0EFAB825C921D0DE06EFAFD64BE198C50C2D02F6BB71973208459
Submitted as: 8cd700a4f61266143b9985673bee2c4ae1cbd3c9ca688f46579fcaaa609a4caf
File type: pe · Size: 2207744 bytes
Verdict: malicious (99/100) · Family: Bulz

Detections (5 of 56 engines)

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

MITRE ATT&CK

Why this verdict

The malicious score of 99/100 is the fusion of 10 weighted signals:

ClamAV (daily) flagged Win.Trojan.Bulz-9889567-0 (rule Win.Trojan.Bulz-9889567-0) - engine signal, weight 0.90, confidence 0.95
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.60, confidence 0.70
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 5 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
Embedded network infrastructure: http://www.eyuyan.com - static signal, weight 0.35, confidence 0.60
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. RWX/private injected region in SppExtComObj.E (pid 5984) (rule windows.malfind.Malfind) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

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

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.eyuyan.com
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
www.eyuyan.com

Embedded IP addresses

20.184.175.7
4.230.171.124
20.42.179.192
20.247.185.124
74.178.76.128
135.233.95.135
4.150.223.111
125.56.205.42
92.223.78.30
52.110.12.20
162.159.142.9
52.110.12.19
125.56.205.17

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