MALICIOUS — 31c5a8fe87155c123a071d8b1e8044840a9628ad971894ea484674075932fc5b

MALICIOUS — 31c5a8fe87155c123a071d8b1e8044840a9628ad971894ea484674075932fc5b is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (100/100), attributed to the SelfDel family. 4 of 56 detection engines flagged it, exhibiting 6 ATT&CK techniques.

Identification

SHA-256: 31c5a8fe87155c123a071d8b1e8044840a9628ad971894ea484674075932fc5b
SHA-1: 6ce095eba70212b3b375650bc23c0221824ed11e
MD5: 98c160e0cfa7ff5ab87c986c1596a8f3
imphash: 170193414cc4abf0ae27dc2a19d74879
ssdeep: 768:qZL/0F24lercjO4sTZg5ZLvn2IuWZ0kqKNPWQHpV:OLsF2Kerc64sTiX2IV0DhuV
TLSH: T1BB2F396647309602F391A78B55403F4DB0B6A8EE3136C7518EE2B57E8BE045738B847C
Submitted as: 31c5a8fe87155c123a071d8b1e8044840a9628ad971894ea484674075932fc5b
File type: pe · Size: 32784 bytes
Verdict: malicious (100/100) · Family: SelfDel

Detections (4 of 56 engines)

ClamAV (daily): Win.Malware.Juko-9753236-0
Microsoft Defender: Trojan:Win32/SelfDel!pz
Emsisoft (Emergency Kit): Trojan.Downloader.JUKO
Kaspersky (KVRT): HEUR:Trojan.Win32.SelfDel.gen

MITRE ATT&CK

Why this verdict

The malicious score of 100/100 is the fusion of 14 weighted signals:

ClamAV (daily) flagged Win.Malware.Juko-9753236-0 (rule Win.Malware.Juko-9753236-0) - engine signal, weight 0.90, confidence 0.95
2 behavioral detection(s) across 2 rule(s): Registry Run Key Persistence [high] (rule tl-run-key) - dynamic signal, weight 0.63, confidence 0.90
Microsoft Defender flagged Trojan:Win32/SelfDel!pz (rule Trojan:Win32/SelfDel!pz) - engine signal, weight 0.55, confidence 0.85
Emsisoft (Emergency Kit) flagged Trojan.Downloader.JUKO (rule Trojan.Downloader.JUKO) - engine signal, weight 0.55, confidence 0.85
Kaspersky (KVRT) flagged HEUR:Trojan.Win32.SelfDel.gen (rule HEUR:Trojan.Win32.SelfDel.gen) - engine signal, weight 0.55, confidence 0.85
Observed at runtime: Registry Run Key Persistence (T1547.001) (rule Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
Contacted 3 external host(s) and 31 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
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
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
Memory forensics: 3 finding(s) elsewhere in the guest, not attributed to this sample, e.g. process hidden from a listing (rule windows.psxview.PsXView) - memory signal, weight 0.05, confidence 0.30

Dynamic analysis (windows)

18578 behavior events · 3 ATT&CK techniques · 1 dropped files.

Dropped files

C:\Users\analyst\AppData\Roaming\Mozilla\WINWORD.exe - dc913e30964fbf9ed3ab1f7ede90bd5b67889430c641fc572ac2a2e77469db24

Embedded URLs

http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://i.assmio.com/320566AD8DCF33A700001225385073DE.html
http://i.assmio.com/326BB6A98DCF3591000019AB766312F9.798X
http://i.assmio.com/32D916A88DCF3782000021141D6B5F50.aspx
http://i.assmio.com/330626A98DCF3872000024EB1629DB17.872X
http://i.assmio.com/724D76AE8D62150600002871D33A8DAD.shtm
http://c.pki.goog/r/r1.crl
http://x2.c.lencr.org/
http://ye.c.lencr.org/
http://c.pki.goog/wr2/9UVbN0w5E6Y.crl
http://yr.c.lencr.org/
http://i.assmio.com/7270B6A98D62160700002C49BD0606FC.aspx
http://i.assmio.com/72AA96A08D6216EC00002FED6B3BD61B.shtm

Embedded domains

i.assmio.com
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

52.168.117.168
52.123.252.223
20.247.185.124
4.230.171.124
172.64.154.167
172.233.212.129
52.110.12.55
52.110.12.22
20.42.65.91
172.178.240.161
57.154.63.210
72.154.7.112
52.148.114.188
52.110.12.24
52.110.12.30

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report