MALICIOUS — $WinREAgent .exe
MALICIOUS — $WinREAgent .exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (99/100), attributed to the Mira family. 5 of 55 detection engines flagged it, exhibiting 2 ATT&CK techniques.
Identification
- SHA-256:
9fdb2f70bb37a3139228aae06bfbbe39308d8474845a4df41f79b356347d3d78 - SHA-1:
739dc1cb2d819b9304a16579544bc0f5b20aaf0d - MD5:
c9f848389a3b4834ef0cf4bc71836ca7 - imphash:
3a2003ea545fe942681da9e7683ebb58 - ssdeep:
6144:6BxIK3CTW8TMjp41u6nyHwnZdHWx4q3BCfcgNo1KBExyqBRFvR+JOw07FOzYX:CxIK9V14ImyHYdHWf3+6KYR3+Q - TLSH:
T109499D05AAA5E59CCA12B3A737839C0E049F48041A755FC406709F998F8CCEB776D8E7 - Submitted as: $WinREAgent .exe
- File type: pe · Size: 420288 bytes
- Verdict: malicious (99/100) · Family: Mira
Detections (5 of 55 engines)
- MalwareAnalyser heuristics (entropy/packer): high-entropy-sections:.lol 1
- ClamAV (daily): Win.Packed.Mira-7330891-0
- Detect It Easy (packer/type): DIE:MinGW
- Microsoft Defender: Trojan:Win32/Krap!pz
- Kaspersky (KVRT): HEUR:Trojan.Win32.Generic
MITRE ATT&CK
Why this verdict
The malicious score of 99/100 is the fusion of 8 weighted signals:
- ClamAV (daily) flagged Win.Packed.Mira-7330891-0 (rule
Win.Packed.Mira-7330891-0) - engine signal, weight 0.90, confidence 0.95 - 1 behavioral detection(s): Registry Run Key Persistence [high] (rule
tl-run-key) - dynamic signal, weight 0.60, confidence 0.90 - Observed at runtime: Registry Run Key Persistence (T1547.001) (rule
Registry Run Key Persistence) - dynamic signal, weight 0.40, confidence 0.90 - Dropped a suspicious payload (Persistence): scoobe-fix.cmd - dynamic signal, weight 0.40, confidence 0.90
- Contacted 22 external host(s) at runtime (21 HTTP) - network signal, weight 0.40, confidence 0.80
- Anti-analysis: T1497.001 - dynamic signal, weight 0.40, confidence 0.75
- Detect It Easy (packer/type) flagged DIE:MinGW (rule
DIE:MinGW) - engine signal, weight 0.35, confidence 0.70 - Packing/obfuscation: high-entropy-sections:.lol 1, MinGW - static signal, weight 0.25, confidence 0.55
Dynamic analysis (windows)
5976 behavior events · 1 ATT&CK techniques · 34 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:\scoobe-fix.cmd .exe -
a2019735352ebf7506354afcb2dea1e388d7168545b4300eb2dad98b71cdf202 - C:\Program Files (x86) .exe -
fdcbcedeb731ed3c359bdab0c834d06802df7f411edec5c9cae7bf596d4c3351 - C:\uac.ps1 .exe -
7300c170a01377e61b8601d99188a5f18b18212133ab31791a7433fcecbc1c44 - C:\DumpStack.log.tmp .exe -
55e6a48bd0d3fac806064ba92fd021114cc43c77a11b5a5bffb6d2f12f996ca9 - C:\$WinREAgent .exe -
ec935a0f0ab4488fdfcde17f9920c55577c667d523b6740d830a164c3aa29c66 - C:\Sysmon64.exe .exe -
5f4d3dd3b483714db4a6c343c17b426f475b11f96eb4f017e96d279eccce0f00 - C:\800.ini .exe -
d444b788e7a754d8767c1b43979637e8d9931ce5aa23237512a5cd708d34ce39 - C:\uac-done.txt -
ad38b76382f56940b22fc920702dbd4bff308a93bf3ad3b0b705686aa4245e9a - C:\PerfLogs .exe -
c3a83c6bad281409edec8f52be5f3bfd74c4b56c91745a2775bc2f4daf494180 - C:\PPLFaultTemp .exe -
6416f474cc07b4704ad8d93c511993b21bc5ee81dc20356715513d58889da88a - C:\Recovery .exe -
75a4905cfc39b5c2370db472ec03f62122583b91c027a8dbbe2e4c9d2480ff99 - C:\pagefile.sys .exe -
6ba27b8f50753d4737178a5e51cf1c234c6c26de1b6677e78c52c34a1900df35 - C:\800.ini -
c74d86919ce9c020fd408839cc667158a1c6cde79c8c08c31e72f69a0deb79fd - C:\inetpub .exe -
bcfeb883f29650b940eac83a933275a864ef2c036c21195c8af2457d14843f04 - C:\$Recycle.Bin .exe -
a7e273abd738a54a07e17cb87d5dcd72c31cd6f930a519424afdf46ddb37b645
Embedded URLs
- 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=1787696452&P2=404&P3=2&P4=mNbvTJTR%2fmKBqIPphpfDJgtbe8DYZKobQoKBCKaQo5Rmobws%2f%2foBs%2f7tDZzLYtPyG%2f5kWibZBrckPexuzfv2lw%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=1787696532&P2=404&P3=2&P4=GaE6pEIoQavq5kiMrEjR4rdmIfEYzc18U8UIlTUGpAgbWGYAbnfMQe41AvbD7chC852tsPhlx79cuCsMOc4GrQ%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com
Embedded IP addresses
- 104.46.162.224
- 52.123.252.227
- 4.230.171.124
- 4.144.132.223
- 40.84.85.40
- 85.210.193.152
- 74.179.77.204
- 74.178.240.51
- 4.150.223.99
- 203.26.79.13
- 52.168.117.171
- 20.231.239.246
- 52.123.129.14
- 52.123.128.14
- 135.234.160.245
- 52.148.114.188
- 52.123.252.242
- 74.178.76.44
- 52.123.252.223
- 72.154.7.107
- 52.110.12.24
- 92.223.78.30
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Analyzed on MalwareAnalyzer by Cyble · Open interactive report