General

  • Target

    ya.exe

  • Size

    63KB

  • Sample

    240420-cj7cgsdf78

  • MD5

    222c2d239f4c8a1d73c736c9cc712807

  • SHA1

    c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c

  • SHA256

    ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d

  • SHA512

    1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02

  • SSDEEP

    1536:tJc/5q1qoR5PDdAZcIED4VuCkbFybjQ9f0jQRmONww+W:7c/iqoJekbFEQ9W+mONP+W

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:23638

209.25.140.1:5525:23638

bring-recorder.gl.at.ply.gg:23638

action-yesterday.gl.at.ply.gg:23638

147.185.221.19:23638

then-wheel.gl.at.ply.gg::23638

then-wheel.gl.at.ply.gg:23638

teen-modes.gl.at.ply.gg:23638

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    uwumonster.exe

Targets

    • Target

      ya.exe

    • Size

      63KB

    • MD5

      222c2d239f4c8a1d73c736c9cc712807

    • SHA1

      c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c

    • SHA256

      ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d

    • SHA512

      1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02

    • SSDEEP

      1536:tJc/5q1qoR5PDdAZcIED4VuCkbFybjQ9f0jQRmONww+W:7c/iqoJekbFEQ9W+mONP+W

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Boot or Logon Autostart Execution

1
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Tasks