MALICIOUS — bd5c4c5178ff9b711a13baf5ad63da284a59d2903484caf9833a217dd491049e

MALICIOUS — bd5c4c5178ff9b711a13baf5ad63da284a59d2903484caf9833a217dd491049e is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Mailru family. 3 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: bd5c4c5178ff9b711a13baf5ad63da284a59d2903484caf9833a217dd491049e
SHA-1: b13273676e3faacc4936a13c0baf71a695fb359e
MD5: 5f4f3d1cd65551ef36a844282c3ee557
imphash: 8a4577fdb4b5d78b693c6b36a8aa9414
ssdeep: 3072:DrAVguiZxHF02SOacgAf+9mzB7y7YRguXtA:DWgVZ1vGAfL1XC
TLSH: T1873F7CCD521A7704E2B7D7605C404F1CD09BF4DA36BE39590E87C12F32A6D6BA9301A9
Submitted as: bd5c4c5178ff9b711a13baf5ad63da284a59d2903484caf9833a217dd491049e
File type: pe · Size: 158352 bytes
Verdict: malicious (99/100) · Family: Mailru

Detections (3 of 55 engines)

ClamAV (daily): Win.Malware.Mailru-6804211-0
YARA: Yara-Rules community: YR_AntiDebug_Checks
Kaspersky (KVRT): not-a-virus:HEUR:AdWare.Win32.Machaer.gen

MITRE ATT&CK

Why this verdict

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

ClamAV (daily) flagged Win.Malware.Mailru-6804211-0 (rule Win.Malware.Mailru-6804211-0) - engine signal, weight 0.90, confidence 0.95
Observed at runtime: Windows Service (T1543.003) (rule Windows Service) - dynamic signal, weight 0.40, confidence 0.90
1 behavioral detection(s): Windows Service Installation [medium] (rule tl-service-install) - dynamic signal, weight 0.40, confidence 0.90
Contacted 18 external host(s) at runtime (14 HTTP) - network signal, weight 0.40, confidence 0.80
Anti-analysis: T1082 - 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
Embedded network infrastructure: http://sv.symcb.com/sv.crl0a, https://d.symcb.com/rpa0, http://sv.symcb.com/sv.crt0 - static signal, weight 0.35, confidence 0.60
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Observed at runtime: Modify Registry (T1112) (rule Modify Registry) - dynamic signal, weight 0.12, confidence 0.90
Extracted generic config (1 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (windows)

1449 behavior events · 2 ATT&CK techniques · 1 dropped files.

Dropped files

C:\ProgramData\Mail.Ru\Id - d90b2fc2de5a2eb373b954c66ff74807be28d37eb2b5bd2057731b8b818cfe30

Embedded URLs

http://sv.symcb.com/sv.crl0a
https://d.symcb.com/rpa0
http://sv.symcb.com/sv.crt0
http://www.symauth.com/cps0
http://www.symauth.com/rpa00
http://s1.symcb.com/pca3-g5.crl0
http://logo.verisign.com/vslogo.gif0
http://ts-aia.ws.symantec.com/tss-ca-g2.cer0
http://ts-crl.ws.symantec.com/tss-ca-g2.crl0
http://crl.thawte.com/ThawteTimestampingCA.crl0
https://gosoftdl.mail.ru/switcher_pd_3_9.exe
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl

Embedded domains

sv.symcb.com
d.symcb.com
www.symauth.com
s1.symcb.com
logo.verisign.com
ts-aia.ws.symantec.com
ts-crl.ws.symantec.com
crl.thawte.com
gosoftdl.mail.ru

Embedded IP addresses

20.42.65.84
52.123.252.220
85.210.196.11
4.230.171.124
52.253.84.76
172.215.188.225
135.232.92.137
135.233.95.135
20.42.73.30
20.165.94.63
20.231.239.246
52.123.128.14
52.123.129.14
135.234.160.244
91.231.134.1
52.148.114.188
52.110.12.16
52.110.12.47

File paths

c:\Build\desktop_apps\_out\launcher.pdb
T:\:d:l:t:
X:\:`:d:h:l:p:t:x:
c:\Build\desktop_apps\launcher\json/gason.h
c:\build\desktop_apps\launcher\json\gason.h

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report