Overview

overview

10

Static

static

3

NTS_eTaxIn...df.exe

windows7-x64

10

NTS_eTaxIn...df.exe

windows10-2004-x64

8

$PLUGINSDI...er.dll

windows7-x64

1

$PLUGINSDI...er.dll

windows10-2004-x64

1

$PLUGINSDI...ge.dll

windows7-x64

1

$PLUGINSDI...ge.dll

windows10-2004-x64

1

$PLUGINSDI...gs.dll

windows7-x64

3

$PLUGINSDI...gs.dll

windows10-2004-x64

3

Sharing

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General

  • Target

    NTS_eTaxInvoice·pdf.exe

  • Size

    489KB

  • Sample

    240625-fpqhpsvflp

  • MD5

    fa45fc9a0330174313e4e08e31d22181

  • SHA1

    ceb0106d1e8709456e8be6f842badbebde62b567

  • SHA256

    3b3d77d803a17ea29440f2a306de9cc86b25d9212c84f10752fa524751bf039c

  • SHA512

    5939798d1adc2e30f4b53f8e1a2ebe670f2a34b42a6551b24fa0f86f632aeda13dea009489602d4189581cb4bae442d9aecccc3a7020886e560fc07142a61d5b

  • SSDEEP

    12288:/qgow9mQ72+RS2x0mcNasY75T3vCVvMWBFbwLkM:x9mg5Sc7kvhFbwT

Score
10/10
guloaderdownloaderexecutionpersistence

Malware Config

Targets

    • Target

      NTS_eTaxInvoice·pdf.exe

    • Size

      489KB

    • MD5

      fa45fc9a0330174313e4e08e31d22181

    • SHA1

      ceb0106d1e8709456e8be6f842badbebde62b567

    • SHA256

      3b3d77d803a17ea29440f2a306de9cc86b25d9212c84f10752fa524751bf039c

    • SHA512

      5939798d1adc2e30f4b53f8e1a2ebe670f2a34b42a6551b24fa0f86f632aeda13dea009489602d4189581cb4bae442d9aecccc3a7020886e560fc07142a61d5b

    • SSDEEP

      12288:/qgow9mQ72+RS2x0mcNasY75T3vCVvMWBFbwLkM:x9mg5Sc7kvhFbwT

    Score
    10/10
    guloaderdownloaderexecutionpersistence

    • Guloader,Cloudeye

      A shellcode based downloader first seen in 2020.

      downloaderguloader

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Legitimate hosting services abused for malware hosting/C2

    • Drops file in System32 directory

    • Suspicious use of NtCreateThreadExHideFromDebugger

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/Banner.dll

    • Size

      4KB

    • MD5

      843657eaf7240b695624dcf38bb0eb31

    • SHA1

      ca99a44e737fdeaab56f864ce1ef15a57d2eec90

    • SHA256

      b935d14c32ad8e16055f7f5794ac3411e601c5ac93155afc623f25b08e2ab82e

    • SHA512

      7773d9f6bbd17253d1c96ce225b2f9d3673969b38177afef236d1c5d4aabaae2c07793e07c34f0281ec3b859ae955e83bfe43a598ce7cc6c893ec8c9604f5de3

    Score
    1/10
    behavioral3behavioral4

    • Target

      $PLUGINSDIR/BgImage.dll

    • Size

      7KB

    • MD5

      a98576f0d6b35b466cb881860977fdbc

    • SHA1

      28b3dbbd76f15c876b98dce523100aa3256d193a

    • SHA256

      6cc4aadae46ee3e7f39b411ba087ec29bc10aa62b6b5b44003c934b3c51cefe2

    • SHA512

      29225bfb30e72d7d3d3571e7562b5901dbf2382af1972cc9a2be8e3bef697b9ac9e0aaac3a9bca191da827ad3cfce7f6876e8be9444663e83a7e2e86788a733c

    • SSDEEP

      96:8e70AKTIfv7QCUsthvNL85s4lk38Eb3CDfvEh8uLzqk7nLiEQjJ3KxkP:tBBfjbUA/85q3wEh8uLmqLpmP

    Score
    1/10
    behavioral5behavioral6

    • Target

      $PLUGINSDIR/nsDialogs.dll

    • Size

      9KB

    • MD5

      2c84faebfda2abe3b16fdf374df4272f

    • SHA1

      a5b0258a94e0440aefe1ef320e62e7a9a1c8bb40

    • SHA256

      72b38e4cca0af336655d55501c4ea05080baaa9921a62a2d717afe90bb801004

    • SHA512

      207164cc6914c59d9f4f3b8ae97628c544093ba6ecda9f8da351f453cd97e03be7a640264b8686b2d5e6f3c787f4df1d8a1ebc8e51fd788a97460cd981cc015e

    • SSDEEP

      96:3ip41CMj95rKhkfL5RkEdKkcxM2DjDf3GE/E9v5E9av+Yx4QndY7ndS27gA:3iujesS4HRE/K5MYxBdqn420

    Score
    3/10
    behavioral7behavioral8

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1
T1059

PowerShell

1
T1059.001

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks