MALICIOUS — mutated_31643.exe
MALICIOUS — mutated_31643.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (74/100), attributed to the AntiDebug family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
4a2a0c469d2d51aa659a2803fa9eac76d7f273bb665e34e170e129d4bdd1d782 - SHA-1:
1192a99266caa70af90eaef0b417736157ae100d - MD5:
e05c143fd0cca210f82742e2a33b1154 - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:u7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uO:u7GpZ31foMqtB+QBPDE7 - TLSH:
T1046A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_31643.exe
- File type: pe · Size: 9807973 bytes
- Verdict: malicious (74/100) · Family: AntiDebug
Detections (3 of 55 engines)
- YARA: Yara-Rules community: YR_AntiDebug_Checks
- Microsoft Defender: Trojan:Win32/Zusy.KK!MTB
- Kaspersky (KVRT): HEUR:Trojan.Win32.Agent.pef
MITRE ATT&CK
Why this verdict
The malicious score of 74/100 is the fusion of 4 weighted signals:
- Dropped a suspicious payload (AntiDebug): mutated_11726.exe - dynamic signal, weight 0.40, confidence 0.90
- Contacted 18 external host(s) at runtime (16 HTTP) - 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 - Embedded network infrastructure: https://gcc.gnu.org/bugs/ - static signal, weight 0.35, confidence 0.60
Dynamic analysis (windows)
219 behavior events · 0 ATT&CK techniques · 6 dropped files.
Runtime network
- www.msftconnecttest.com
- rb.symcd.com
- rb.symcb.com
- inference.location.live.net
- to-do.office.com
- staging.to-do.officeppe.com
- teams.cloud.microsoft
- outlook.office.com
- outlook.office365.com
- outlook.cloud.microsoft
- ctldl.windowsupdate.com
- login.live.com
- ocsp.digicert.com
- desktop-hsgcbep
- v20.events.data.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
- officeclient.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\mutated_32448.exe -
c03aa85e9fbbff97ffd3aa5d23e01960b2c45a462c93489553c49650f6040f54 - C:\Users\analyst\AppData\Local\Temp\mutated_9446.exe -
3b85092d4652b4f10ccc23a67a84569f6f9e1a879f60fda01f84c61e779ffbd1 - C:\Users\analyst\AppData\Local\Temp\mutated_17646.exe -
70248a303741dc9d1c86ab8edbb91bd3be06986a45b1b2a569a07748745b48af - C:\Users\analyst\AppData\Local\Temp\mutated_11998.exe -
22f55f182bb9d32325485e623d9b7d13c834d682680a4a8be2f7ccd4867d2f50 - C:\Users\analyst\AppData\Local\Temp\mutated_11726.exe -
4774c4b48a19e2ddf0868406957ce85c7b299164a73e5b9b915c34f92f4ff6c5 - C:\Users\analyst\AppData\Local\Temp\mutated_16100.exe -
1e8e2d634c0795fe96c78a729416a64c27bad046261b4782a0a3ad359d24412a
Embedded URLs
- https://gcc.gnu.org/bugs/
- http://www.msftconnecttest.com/connecttest.txt
- http://rb.symcd.com/MFEwTzBNMEswSTAJBgUrDgMCGgUABBTDRSYViRCZTxmZjLENmnwVjLly9QQU1MAGIknrOUvdk%2BJcobhHdglyA1gCEF0QyxjrOnkAh4OrdHf50xk%3D
- http://rb.symcb.com/rb.crl
- http://203.26.79.13/filestreamingservice//files/753bb2df-a166-494f-aa7d-5678b1ef0c56/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/753bb2df-a166-494f-aa7d-5678b1ef0c56?P1=1787727331&P2=404&P3=2&P4=TEOwjX%2fmNQKdK8HhJojMYDcXPfp8kcd9kyDqlJZAy2I7xJv3yFX1%2fh8L5bYFxFEouAfFZjJ1QPGBuLKMsZU0Cg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 52.123.252.215
- 20.184.175.5
- 52.230.60.54
- 85.210.193.152
- 4.230.171.124
- 135.232.92.137
- 74.178.240.51
- 4.150.223.109
- 20.236.44.162
- 52.123.128.14
- 52.123.129.14
- 203.26.79.13
- 172.178.240.161
- 74.178.232.29
- 52.148.114.188
- 72.154.7.97
- 52.110.12.4
- 52.110.12.37
File paths
- X:\:`:d:h:l:p:t:x:
- X:\:h:l:p:
More AntiDebug samples · Latest analyzed threats · ATT&CK coverage
Analyzed on MalwareAnalyzer by Cyble · Open interactive report