MALICIOUS — FlatOut + hack.exe

MALICIOUS — FlatOut + hack.exe is a pe sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (98/100), attributed to the Upantix family. 6 of 55 detection engines flagged it, exhibiting 3 ATT&CK techniques.

Identification

SHA-256: 9e34779b3b03c43e685fb9dcbd8902c9e1923dc944ee73434010e1389e5c38db
SHA-1: 09b0bf737e716531d513af6a2358a78e2a125605
MD5: 4b7a61e350eba318361215a2768f54a1
imphash: 24b60c57cc33f3e633431b7ad497fda7
ssdeep: 12288:5wawSwaw1wawSwaw9zJwawSwaw1wawSwaw9zswawSwaw1wawSwaw9zJwawSwaw1z:nr
TLSH: T1D060D100327A399CD7709F605524598DA22552C1897D3EEA9B03072D3CB78BBB9E8F71
Submitted as: FlatOut + hack.exe
File type: pe · Size: 3527567 bytes
Verdict: malicious (98/100) · Family: Upantix

Detections (6 of 55 engines)

MalwareAnalyser heuristics (entropy/packer): UPX
ClamAV (daily): Win.Malware.Upantix-9886651-0
YARA: JPCERT/CC: JPCERT_HUILoader_PlugX_SideLoad
Detect It Easy (packer/type): DIE:Turbo Linker
Microsoft Defender: Trojan:Win32/Upantix.GM!MTB
Kaspersky (KVRT): HEUR:Packed.Win32.Upantix.gen

MITRE ATT&CK

Why this verdict

The malicious score of 98/100 is the fusion of 8 weighted signals:

ClamAV (daily) flagged Win.Malware.Upantix-9886651-0 (rule Win.Malware.Upantix-9886651-0) - engine signal, weight 0.90, confidence 0.95
1 behavioral detection(s): C2: connection to non-standard port [medium] (rule tl-c2-rare-port) - dynamic signal, weight 0.40, confidence 0.90
Contacted 21 external host(s) at runtime (23 HTTP) - network signal, weight 0.40, confidence 0.80
YARA: JPCERT/CC flagged JPCERT_HUILoader_PlugX_SideLoad (rule JPCERT_HUILoader_PlugX_SideLoad) - engine signal, weight 0.35, confidence 0.70
Detect It Easy (packer/type) flagged DIE:Turbo Linker (rule DIE:Turbo Linker) - engine signal, weight 0.35, confidence 0.70
communicate over HTTP (rule communicate over HTTP) - capa signal, weight 0.30, confidence 0.60
Packing/obfuscation: UPX, high-entropy-sections:UPX1, Turbo Linker - static signal, weight 0.25, confidence 0.55
Dropped 8 executable file(s) at runtime - dynamic signal, weight 0.20, confidence 0.60

Dynamic analysis (windows)

1556 behavior events · 0 ATT&CK techniques · 8 dropped files.

Dropped files

C:\Windows\win32dc\Half-Life 2(serial).exe - a1984376a1b683ed62a782c1b698b9f6af98ac8e4a06a96f58eb63fb49d70a1b
C:\Windows\win32dc\DAoC + crack.exe - 9d2f17f724f4a2cad238fffef7ec69dc894463c51a020be48b99f4edf6058953
C:\Windows\win32dc\Counter-Strike_cheat.exe - ae0d9e8db3934165028f7cfb4284225dce8e5c2cdea64990868fa7e8e49cc5fc
C:\Windows\win32dc\Sims 2 + serial.exe - 3af4671d6ec6b71f0f03c3d491a7a192b2fd318f7fb4f049d10fa89d73110a53
C:\Windows\win32dc\FlatOut_nocd.exe - 682f1908a75693564e1f4e7f754dd7e279a6d5b0c9e02e66fc4b22eda02ad7e9
C:\Windows\win32dc\Half-Life 2_patch.exe - 9efa265ea72be8225d656d9eab718efa2007fcee78c73aa9efb4951211871a2e
C:\Windows\win32dc\Counter-Strike patch.exe - 0e06804c0d5825f1275f2cceb6a1b4d59ee74628d5fe82893607683bb740b431
C:\Windows\win32dc\Silent Hill 4(codes).exe - 65981df47ff117715979e541130ba6087a87cb8de21fd05b0e445116d9d6f8d8

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=1787667060&P2=404&P3=2&P4=LdBp81gK1SsGs7uCaOYLy%2fvbQIzU%2fhmPPFS5lLKuPrATYZCx0oQ0tJLXRTuXjbLGBidf0%2fBMclKhCdEQ2kGMlw%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=1787667106&P2=404&P3=2&P4=HrhjWGWZbqxWCSkKZ6qTfUY9ZdxF%2bYnYpro%2bq72o0wlsxV2Q3FEhTBAAEeuB99hfEQVv1JIH%2b4BtsbsdRhXw9w%3d%3d&cacheHostOrigin=msedge.b.tlu.dl.delivery.mp.microsoft.com

Embedded domains

us.undernet.org

Embedded IP addresses

20.42.73.31
4.230.171.124
85.210.193.152
52.230.60.54
4.247.188.224
74.179.77.204
135.233.95.135
4.207.44.74
20.236.44.162
52.123.129.14
40.99.133.226
172.178.240.163
172.66.2.5
203.26.79.13
135.232.92.34
172.83.156.122
52.148.114.188
172.215.188.232
52.110.12.33
52.110.12.11
72.153.5.137

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report