MALICIOUS — fb4f8b9e5b279fda363e81c313878bccccd973ed938c61ce2655669c0b28d4be

MALICIOUS — fb4f8b9e5b279fda363e81c313878bccccd973ed938c61ce2655669c0b28d4be is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (97/100), attributed to the Ursu family. 3 of 56 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

SHA-256: fb4f8b9e5b279fda363e81c313878bccccd973ed938c61ce2655669c0b28d4be
SHA-1: 43b658ae6b36c911dd9bf31f615f0aa56a53ccf1
MD5: 4fe3d73b50b5b5ba65eda494166b2abf
imphash: 9a48e0c3fcb7f3efe26b8ef4b97a609a
ssdeep: 98304:RGB/hQ2N3eETMNo0uHX/EmB2ot+YUi0ce42Eej3GLD:RGDN3eETMNoyo+Yi2n
TLSH: T16863DE895350E208F5ED8780A450BD6E3C77A0CA38BF5949B9E3C16B73D9C6F5039262
Submitted as: fb4f8b9e5b279fda363e81c313878bccccd973ed938c61ce2655669c0b28d4be
File type: pe · Size: 5002720 bytes
Verdict: malicious (97/100) · Family: Ursu

Detections (3 of 56 engines)

capa (capabilities): capability:collection/keylog
ClamAV (daily): Win.Keylogger.Ursu-9870720-0
YARA: Yara-Rules community: YR_AntiDebug_Checks

MITRE ATT&CK

Why this verdict

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

ClamAV (daily) flagged Win.Keylogger.Ursu-9870720-0 (rule Win.Keylogger.Ursu-9870720-0) - engine signal, weight 0.90, confidence 0.95
capture keystrokes (rule capture keystrokes) - capa signal, weight 0.40, confidence 0.80
Contacted 19 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
capa (capabilities) flagged capability:collection/keylog (rule capability:collection/keylog) - engine signal, weight 0.35, confidence 0.70
Embedded network infrastructure: http://www.clickteam.com - static signal, weight 0.35, confidence 0.60
Dropped 4 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
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)

4167 behavior events · 0 ATT&CK techniques · 4 dropped files.

Dropped files

C:\Users\analyst\AppData\Local\Temp\mrt1836.tmp\mmf2d3d11.dll - 5f6563d6bf2f3ceab8b2ca2c15ba4f7fe882a82c1f72b10041b5692c6515a53a
C:\Users\analyst\AppData\Local\Temp\mrt1836.tmp\mmf2d3d9.dll - bddda991185a9e83b9855a109f2fcfa78cd2d5402e9db344c6ec77f6ce69a0c5
C:\Users\analyst\AppData\Local\Temp\mrt1836.tmp\mmf2d3d8.dll - aad3c93f3f12b3469a0f6794f7fb5928727702dba5fe69dd43047cc2adb25095
C:\Users\analyst\AppData\Local\Temp\mrt1836.tmp\mmfs2.dll - 763ef4484ba9b9e10e19268c045732515f0ac143cf075e6d1ea1f5adcc77633b

Embedded URLs

http://www.clickteam.com
http://www.msftconnecttest.com/connecttest.txt
http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
http://rb.symcb.com/rb.crl
http://c.pki.goog/r/gsr1.crl
http://c.pki.goog/r/r4.crl
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/

Embedded domains

www.clickteam.com
x1.c.lencr.org
x2.c.lencr.org
ye.c.lencr.org
yr.c.lencr.org

Embedded IP addresses

4.150.223.99
57.155.104.224
4.230.171.124
20.165.94.63
74.178.240.51
4.150.223.105
52.253.84.76
20.184.175.9
172.64.154.167
4.150.223.97
52.148.114.188
92.223.78.30
72.145.35.101
52.110.12.47

File paths

G:\:
M:\:k:z:
H:\:k:
g:\;h;x;
X:\:`:d:h:l:p:t:x:
E:\mmf2_refresh_unicode\dll\Obj\Release\mmfs2.pdb
X:\:`:d:
T:\:d:l:t:
A:\!

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

Analyzed on MalwareAnalyzer by Cyble · Open interactive report