MALICIOUS — 323fe1ce9916cc899e8431cb9ed0b08467ee355bf373b70183bfb2e203314453

MALICIOUS — 323fe1ce9916cc899e8431cb9ed0b08467ee355bf373b70183bfb2e203314453 is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the Bulz family. 9 of 56 detection engines flagged it, exhibiting 7 ATT&CK techniques.

Identification

SHA-256: 323fe1ce9916cc899e8431cb9ed0b08467ee355bf373b70183bfb2e203314453
SHA-1: 6ff79573c423a1587b9cfaed581ca84cb947b096
MD5: c8c4bc30067e799be156edd53fe48364
imphash: 1e58427826d059c34cbf4b958693e4c4
ssdeep: 12288:maWzgMg7v3qnCiMErQohh0F4CCJ8lnyz3/06:haHMv6Corjqnyz3/06
TLSH: T15F50A0A12135A73BD2B2E77868705BCF20B771AC11F919D85283C1EC31F5CAB942259B
Submitted as: 323fe1ce9916cc899e8431cb9ed0b08467ee355bf373b70183bfb2e203314453
File type: pe · Size: 755979 bytes
Verdict: malicious (100/100) · Family: Bulz

Detections (9 of 56 engines)

YARA: MalwareAnalyser built-in: Windows_Injection_Api_Combo
capa (capabilities): capability:collection/keylog
MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Malware.Bulz-9940102-0
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
YARA: Yara-Rules community: YR_AntiDebug_Checks
Microsoft Defender: Trojan:Win32/AutoitGenome!pz
Emsisoft (Emergency Kit): Gen:Variant.Tedy.850583
Kaspersky (KVRT): Trojan-Downloader.Win32.Agent.gpyl

MITRE ATT&CK

YARA

Windows_Injection_Api_Combo

Why this verdict

The malicious score of 100/100 is the fusion of 20 weighted signals:

ClamAV (daily) flagged Win.Malware.Bulz-9940102-0 (rule Win.Malware.Bulz-9940102-0) - engine signal, weight 0.90, confidence 0.95
Process injection API combination (rule Windows_Injection_Api_Combo) - yara signal, weight 0.65, confidence 0.90
Microsoft Defender flagged Trojan:Win32/AutoitGenome!pz (rule Trojan:Win32/AutoitGenome!pz) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Gen:Variant.Tedy.850583 (rule Gen:Variant.Tedy.850583) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged Trojan-Downloader.Win32.Agent.gpyl (rule Trojan-Downloader.Win32.Agent.gpyl) - 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
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 5 external host(s) and 24 HTTP request(s) at runtime - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1497.001, T1497, T1082, T1622 - dynamic signal, weight 0.40, confidence 0.75
YARA: Yara-Rules community flagged YR_AntiDebug_Checks (rule YR_AntiDebug_Checks) - engine signal, weight 0.35, confidence 0.70
YARA: MalwareAnalyser built-in flagged Windows_Injection_Api_Combo (rule Windows_Injection_Api_Combo) - 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
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 - static signal, weight 0.25, confidence 0.55
enumerate processes (rule enumerate processes) - capa signal, weight 0.20, confidence 0.60
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

Dynamic analysis (windows)

28599 behavior events · 2 ATT&CK techniques · 10 dropped files.

Dropped files

C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\1B1495DD322A24490E2BF2FAABAE1C61 - 81790d37b028213b8651fb7b9e2a5b9794eab0a7943acc252422ad590da202cd
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\1B1495DD322A24490E2BF2FAABAE1C61 - 12fd0590708bb38d8039bc994178acee8a3d220f0cd194b0f1c2fc9ba622f927
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\103621DE9CD5414CC2538780B4B75751 - ee81296f812267fd91d42309000fc8204cd7b4ef9e743cfdd2b53674be5dab51
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\103621DE9CD5414CC2538780B4B75751 - 3dd5ea8a14eb665ba6057d424f94e5e83757ffaab456578dbf038af04053b19e
C:\Program Files\Managemenot\Monitor\tcpscrex.exe - e0f727045dd7a0075d4fe2c3de01e48c477bdfa8f545d6e081319ee8624252b7
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\22D536C4B4AD2CEF7AC6B7789FD235E3 - 882ec0ec43b798ba24ba53bfe11de2e920cd935b397a97ffadb2aa1b784b92a4
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\22D536C4B4AD2CEF7AC6B7789FD235E3 - 251ed08cc8f5873098ea5ee083034e7cd99ece955920e12a42e50306a94cb6eb
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\17A440B37A6A20289A68E145191710C9 - 47ad3807a03be9665de53215dfa3eeb798fed217d2f7dd76d9c9aa9663cfb2c5
C:\Users\analyst\AppData\Local\Microsoft\Windows\INetCache\IE\H9BOFF51\getip[1].htm - 9e17cb15dd75bbbd5dbb984eda674863c3b10ab72613cf8a39a00c3e11a8492a
C:\Users\analyst\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\17A440B37A6A20289A68E145191710C9 - 073c2f8879605101fca22afb07cf19c2260ccade88afec47bbb67edf3b06dd69

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://w347302.s98.ufhosted.com/getip.asp
http://www.aamailsoft.com/getip.php
http://x2.c.lencr.org/
http://ye.c.lencr.org/
http://ye2.c.lencr.org/22.crl
http://W347302.S98.Ufhosted.Com/NC/UP/Down.txt
http://c.pki.goog/r/r1.crl
http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
http://yr.c.lencr.org/

Embedded domains

autoitscript.com
w347302.s98.ufhosted.com
www.aamailsoft.com
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
ye2.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

52.168.112.66
4.230.171.124
20.247.185.124
172.215.188.225
20.165.94.54
74.179.77.204
51.116.246.105
52.178.17.234
104.18.33.89
101.227.111.7
66.175.209.193
104.18.21.213
52.110.12.24
52.110.12.38
135.234.160.246
52.148.114.188
52.110.12.54
72.145.35.104
52.110.12.21

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report