SUSPICIOUS — mutated_4118.exe
SUSPICIOUS — mutated_4118.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:
4f7e9d39bf2af98cb0f0ab1f86a573610e0c6b2491b9f9096c85572c7018683d - SHA-1:
7008eb1b8671ab1fadfb2bad2366cd3cb80e6baa - MD5:
ece125afc23af8a582c24846e9d1ff7e - imphash:
542863a264e826bf130b0880664f67e4 - ssdeep:
98304:U7GpL4IFkDS1foMqv4Yop7IyoB+QBPDE7uq:U7GpZ31foMqtB+QBPDED - TLSH:
T1F36A6C7071656487CFFA1630BCAE456E37B360202AB6D38C1386215391D26FF8A7C5E6 - Submitted as: mutated_4118.exe
- File type: pe · Size: 9807977 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 24 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
- Dropped 5 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60
Dynamic analysis (windows)
184 behavior events · 0 ATT&CK techniques · 5 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
- licensing.mp.microsoft.com
- windows.msn.com
- oneocsp.microsoft.com
- www.msn.com
Dropped files
- C:\Users\analyst\AppData\Local\Temp\mutated_24737.exe -
fd5111e9c9053e8056c25f6b42192d146cee07fb6e348b34a196fea58bca5f53 - C:\Users\analyst\AppData\Local\Temp\mutated_19599.exe -
759a112b6d1319d86ee5cde50e42ceb579d57d3aeeb5c510398d4af6841ad586 - C:\Users\analyst\AppData\Local\Temp\mutated_22559.exe -
40116dd1ae19fdba925c77ffe66efffb30ed013342a49f438bc3e8edf591fa2a - C:\Users\analyst\AppData\Local\Temp\mutated_31543.exe -
73ff0a4a9b9f9b54ed1a06b24231793e6e3d2836d144d7e434cfcc9c7ce1d4a8 - C:\Users\analyst\AppData\Local\Temp\mutated_18083.exe -
f2ce990671173fb713b0d2205965bdb81cc029e7b40468f2ab566046e99f50cb
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=1787722977&P2=404&P3=2&P4=PWHyfw2IogxM010%2b09SlApn9bYFctWfTcXWVAEW%2bNLEvHQE1MnwhEA6PNLMLaPC1J%2bDKzGrzoz5atpQ1YQN3xA%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded domains
- gcc.gnu.org
Embedded IP addresses
- 20.184.175.7
- 52.123.252.241
- 52.230.60.54
- 57.155.104.224
- 4.230.171.124
- 135.232.92.137
- 20.184.175.17
- 135.232.92.97
- 52.110.12.10
- 20.231.239.246
- 52.123.128.14
- 40.103.64.226
- 40.99.133.210
- 52.123.129.14
- 40.99.134.2
- 20.42.65.90
- 52.110.12.54
- 135.233.45.223
- 203.26.79.13
- 72.153.5.128
- 135.233.95.80
- 52.148.114.188
- 52.110.12.46
- 52.110.12.50
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