MALICIOUS — 21ffeade7a2ca38e1cf578598afb3b6b36034e111e937300bb697dd9cbf3f7e4.sh

MALICIOUS — 21ffeade7a2ca38e1cf578598afb3b6b36034e111e937300bb697dd9cbf3f7e4.sh is a shell sample analyzed by MalwareAnalyzer by Cyble with a malicious verdict (93/100), attributed to the Bash family. 2 of 51 detection engines flagged it, exhibiting 2 ATT&CK techniques.

Identification

• SHA-256: 21ffeade7a2ca38e1cf578598afb3b6b36034e111e937300bb697dd9cbf3f7e4
• SHA-1: 9684c96ba416c2250a8c2a835c9c8c90257c097e
• MD5: 3e42a546634cd9af72ad76d638d3b447
• ssdeep: 12:MCd9WI+WAAQWeNIyJ6WDfKi+W39WkFWlW4H6WoW8WHW2n:HOSHeNIyzKihkV84NTn22
• TLSH: T11B123A69C46A7F3F3AAE238527027CBE1613B0C87732F51319B64278D266B52C5650BC
• Submitted as: 21ffeade7a2ca38e1cf578598afb3b6b36034e111e937300bb697dd9cbf3f7e4.sh
• File type: shell · Size: 1153 bytes
• Verdict: malicious (93/100) · Family: Bash

Source: MalwareBazaar · first seen 2026-07-26T00:00:00.000Z · SHA-256 verified

Detections (2 of 51 engines)

• Emsisoft (Emergency Kit): Generic.Bash.MiraiA.6B1DF826
• Kaspersky (KVRT): HEUR:Trojan-Downloader.Shell.Agent.p

MITRE ATT&CK

• T1105
• T1059.004

Why this verdict

The malicious score of 93/100 is the fusion of 8 weighted signals:

• 1 behavioral detection(s): Download-and-execute dropper (wget/curl + chmod) [high] (rule tl-linux-download-exec) - dynamic signal, weight 0.60, confidence 0.90
• 1 behavioral detection(s): Download-and-execute dropper (wget/curl + chmod) [high] (rule tl-linux-download-exec) - dynamic signal, weight 0.60, confidence 0.90
• Emsisoft (Emergency Kit) flagged Generic.Bash.MiraiA.6B1DF826 (rule Generic.Bash.MiraiA.6B1DF826) - engine signal, weight 0.55, confidence 0.85
• Embedded network infrastructure: http://64.89.163.215/bins/putita.arm, http://64.89.163.215/bins/putita.arm5, http://64.89.163.215/bins/putita.arm6 - static signal, weight 0.35, confidence 0.60
• Contacted 10 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Contacted 10 external host(s) at runtime - network signal, weight 0.12, confidence 0.55
• Extracted generic config (13 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30
• Extracted generic config (13 C2) (generic/advisory) - engine signal, weight 0.15, confidence 0.30

Dynamic analysis (linux)

887 behavior events · 0 ATT&CK techniques · 1 dropped files.

Runtime network

• entropy.ubuntu.com
• ntp.ubuntu.com
• desktop-hsgcbep
• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 185.125.189.53:443
• 64.89.163.215:80
• 203.26.79.13
• 185.125.189.53
• 64.89.163.215
• 10.240.0.1
• ff02::1:3
• 224.0.0.252
• 10.240.0.255
• 224.0.0.251
• ff02::fb
• ff02::16
• ff02::1:ff12:3456

Dropped files

• tmp_tmp.H9T9Pq3V6a - 583c21b518119b74767f6e7cb3884443f8e3ccb02d69864ce1892d98237313b6

Embedded URLs

• http://64.89.163.215/bins/putita.arm
• http://64.89.163.215/bins/putita.arm5
• http://64.89.163.215/bins/putita.arm6
• http://64.89.163.215/bins/putita.arm7
• http://64.89.163.215/bins/putita.m68k
• http://64.89.163.215/bins/putita.mips
• http://64.89.163.215/bins/putita.mipsrouter
• http://64.89.163.215/bins/putita.mpsl
• http://64.89.163.215/bins/putita.ppc
• http://64.89.163.215/bins/putita.sh4
• http://64.89.163.215/bins/putita.x86
• http://64.89.163.215/bins/putita.x86_64

Embedded domains

• 2.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• b.f.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• 252.0.0.224.in-addr.arpa
• 3.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.f.f.ip6.arpa
• entropy.ubuntu.com
• ntp.ubuntu.com

Embedded IP addresses

• 64.89.163.215
• 203.26.79.13
• 185.125.189.53
• 20.165.94.63
• 20.42.179.192
• 185.125.190.58
• 91.189.91.157
• 185.125.190.56

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Analyzed on MalwareAnalyzer by Cyble · Open interactive report