Overview

overview

10

Static

static

3

de5992f7c9...2c.exe

windows7-x64

10

de5992f7c9...2c.exe

windows10-2004-x64

7

$PLUGINSDI...em.dll

windows7-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...fo.dll

windows7-x64

3

$PLUGINSDI...fo.dll

windows10-2004-x64

3

$PLUGINSDI...ec.dll

windows7-x64

3

$PLUGINSDI...ec.dll

windows10-2004-x64

3

uninstall.exe

windows7-x64

7

uninstall.exe

windows10-2004-x64

7

$PLUGINSDI...ec.dll

windows7-x64

3

$PLUGINSDI...ec.dll

windows10-2004-x64

3

Sharing

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General

  • Target

    JaffaCakes118_87f384904add8574b7fb64030a7dafa8cebc825165553f01180e9dcb60bcfc69

  • Size

    198KB

  • Sample

    241224-yfa1rsvpg1

  • MD5

    3c39e3f2cb644eb66b0ec57e6db33e41

  • SHA1

    9ad386bea5c484c0137f2d58ca5bc8645071724d

  • SHA256

    87f384904add8574b7fb64030a7dafa8cebc825165553f01180e9dcb60bcfc69

  • SHA512

    8a8a9866b292c3b80147aaf3204bb0e3c442025215369f75f7cfdd41f12b28798b9d7dabde27138cc5ccc6ab8e88a6cd51d0fd2de0a6ea7e3cc7efb2c55c1fe6

  • SSDEEP

    3072:OXTQwFDhwpHb6onfMyEzH9rX3cGTXUnM+XcjhXsmai6X58VJyoM2VLQYXDsJ5ohJ:yIJnU3zZswXf+MBdb2gJyxUs5ohwS

Score
10/10
remcosapril-blessdiscoverypersistencerat

Malware Config

Extracted

Family

remcos

Version

2.7.2 Pro

Botnet

APRIL-BLESS

C2

shahzad73.casacam.net:2404

shahzad73.ddns.net:2404
Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-B1CZ1A

  • screenshot_crypt

    false

  • screenshot_flag

    true

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    Remcos

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Targets

    • Target

      de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c

    • Size

      350KB

    • MD5

      a917ef9e23640e7454c0003b4a1c4d39

    • SHA1

      a6f198a415a5459102afe3953a60670afc20356f

    • SHA256

      de5992f7c92351d1011fbece2d4bf74ecfc3b09f84aedb12997a2c3bf869de2c

    • SHA512

      57665fc8a14a91fb924bf827c72b4c62847d456cf277f21760b5a3535b9172ededb1eb8d1394543dbe93b707f6d3cd86b0811bafb431b388e7541dd62e63ab12

    • SSDEEP

      6144:QsJkBV+aEuoRPwi2AT3eV8zaTT56xuKbhGWhgjouQd:+Euolw3V8Y3ohGWqxQd

    Score
    10/10
    remcosapril-blessdiscoverypersistencerat

    • Remcos

      Remcos is a closed-source remote control and surveillance software.

      ratremcos

    • Remcos family

      remcos

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

    • Target

      $PLUGINSDIR/System.dll

    • Size

      11KB

    • MD5

      c17103ae9072a06da581dec998343fc1

    • SHA1

      b72148c6bdfaada8b8c3f950e610ee7cf1da1f8d

    • SHA256

      dc58d8ad81cacb0c1ed72e33bff8f23ea40b5252b5bb55d393a0903e6819ae2f

    • SHA512

      d32a71aaef18e993f28096d536e41c4d016850721b31171513ce28bbd805a54fd290b7c3e9d935f72e676a1acfb4f0dcc89d95040a0dd29f2b6975855c18986f

    • SSDEEP

      192:7DKnJZCv6VmbJQC+tFiUdK7ckD4gRXKQx+LQ2CSF:7ViJrtFRdbmXK8+PCw

    Score
    3/10
    discovery
    behavioral3behavioral4

    • Target

      $PLUGINSDIR/UserInfo.dll

    • Size

      4KB

    • MD5

      7579ade7ae1747a31960a228ce02e666

    • SHA1

      8ec8571a296737e819dcf86353a43fcf8ec63351

    • SHA256

      564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

    • SHA512

      a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

    Score
    3/10
    discovery
    behavioral5behavioral6

    • Target

      $PLUGINSDIR/nsExec.dll

    • Size

      6KB

    • MD5

      acc2b699edfea5bf5aae45aba3a41e96

    • SHA1

      d2accf4d494e43ceb2cff69abe4dd17147d29cc2

    • SHA256

      168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

    • SHA512

      e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

    • SSDEEP

      96:M7GUb+YNfwgcr8zyKwZ5S4JxN8BS0ef9/3VI9d0qqyVgNk32E:eKgfwgcr8zylsB49Ud0qJVgNX

    Score
    3/10
    discovery
    behavioral7behavioral8

    • Target

      uninstall.exe

    • Size

      199KB

    • MD5

      6b76c5bf9f4851ca1ea09e9af10408bf

    • SHA1

      2c2923750bcfa62b35c3f5ff30c41b7021bb3b2c

    • SHA256

      732f723148b72727dac233138cfb937f9e4fe346a89dc10af3ace38ffadf46ab

    • SHA512

      11c0b9e49f86db1e11ec614bc356d0cfb2b5c0fb0790ea3b1e9fdc47ee91d3addfcb783cf4a920898d1b8d941ee1c8a20ba8762216cbd56e0aae8d617d4e59a1

    • SSDEEP

      3072:QQIURTXJFQY1YUYGYOWYYJYYYvSOYPDtRYc+OhM22:QsrkBV+522

    Score
    7/10
    discovery

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    behavioral10behavioral9

    • Target

      $PLUGINSDIR/nsExec.dll

    • Size

      6KB

    • MD5

      acc2b699edfea5bf5aae45aba3a41e96

    • SHA1

      d2accf4d494e43ceb2cff69abe4dd17147d29cc2

    • SHA256

      168a974eaa3f588d759db3f47c1a9fdc3494ba1fa1a73a84e5e3b2a4d58abd7e

    • SHA512

      e29ea10ada98c71a18273b04f44f385b120d4e8473e441ce5748cfa44a23648814f2656f429b85440157988c88de776c6ac008dc38bf09cbb746c230a46c69fe

    • SSDEEP

      96:M7GUb+YNfwgcr8zyKwZ5S4JxN8BS0ef9/3VI9d0qqyVgNk32E:eKgfwgcr8zylsB49Ud0qJVgNX

    Score
    3/10
    discovery
    behavioral11behavioral12

MITRE ATT&CK Enterprise v15

Tasks