SUSPICIOUS — mutated_6735.exe
SUSPICIOUS — mutated_6735.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a suspicious verdict (64/100), attributed to the AntiDebug family. 3 of 55 detection engines flagged it, exhibiting 1 ATT&CK technique.
Identification
- SHA-256:
4aa0e652b5130cc695cd2bff6aacaf62eec67848f6d57db5a7faa248f567a8f8 - SHA-1:
1ae1aaee408713d599cb72dcfc4ae5c2410c7f1c - MD5:
273aafc603966af2aedb90dd2d2aaab1 - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:q7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uI:q7GpZ31foMqtB+QBPDEr - TLSH:
T18E6A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_6735.exe
- File type: pe · Size: 9807982 bytes
- Verdict: suspicious (64/100) · 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 suspicious score of 64/100 is the fusion of 4 weighted signals:
- Contacted 25 external host(s) at runtime (18 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
- Dropped 2 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
99 behavior events · 0 ATT&CK techniques · 2 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
- licensing.mp.microsoft.com
- config.edge.skype.com
- windows.msn.com
- oneocsp.microsoft.com
- officeclient.microsoft.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\mutated_563.exe -
fbc0c697e277df1d0aa5f1181049d9b3530bebeb0df07ee30434a693cd1b6942 - C:\Users\analyst\AppData\Local\Temp\mutated_17972.exe -
35adb508dc949a4ef8c9011ca9e9d73fe0eee8234b4f3b4e32544a0e0224f266
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=1787660439&P2=404&P3=2&P4=WQpsKwrWwKFLJHUa0teVxUq45%2bJCJF9NUIhDK3y3o23VUUB3o3YARoQtMXYREbtuxCVjKRnw9Ybvlxxi4%2fiX8Q%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice//files/c74a5353-3e6a-42b7-94d6-9b96c560c89a/pieceshash?cacheHostOrigin=dl.delivery.mp.microsoft.com
- http://203.26.79.13/filestreamingservice/files/c74a5353-3e6a-42b7-94d6-9b96c560c89a?P1=1787660486&P2=404&P3=2&P4=TjTlQGfjPU1tPhwwHxgxYMZvPd3%2bpRaCm%2bJbaj47FykN0kNRPzt58S%2f6hwgcExFqlnL%2fqk%2bjUGrYvnRSCBk8Yg%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 20.42.73.27
- 52.253.84.76
- 52.123.252.227
- 52.123.252.238
- 4.230.171.124
- 20.42.179.192
- 74.179.71.159
- 135.233.95.144
- 135.232.92.97
- 20.42.65.85
- 52.123.252.193
- 203.26.79.13
- 20.76.201.171
- 52.123.128.14
- 40.103.64.226
- 52.123.129.14
- 51.116.246.104
- 172.178.240.162
- 135.233.45.223
- 172.66.2.5
- 52.148.114.188
- 135.232.92.34
- 72.145.35.96
- 52.110.12.31
- 52.110.12.55
File paths
- X:\:`:d:h:l:p:t:x:
- X:\:h:l:p:
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report