Analysis

  • max time kernel
    115s
  • max time network
    46s
  • platform
    debian-9_mipsel
  • resource
    debian9-mipsel-20260513-en
  • resource tags

    arch:mipselimage:debian9-mipsel-20260513-enkernel:4.9.0-13-4kc-maltalocale:en-usos:debian-9-mipselsystem
  • submitted
    18/08/2026, 12:30

General

  • Target
    preparar.sh
  • Size 5KB
  • Sample260818-pphmjasdjc
  • SHA256 488667a02eaf88aa7ce155eb0eaee42424e92e888ac39cb19efd826c3756a377
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Adds new SSH keys 1 TTPs 1 IoCs

    Linux special file to hold SSH keys. The threat actor may add new keys for further remote access.

  • Modifies sudoers policy 1 TTPs 1 IoCs

    Writes to /etc/sudoers or a drop-in config, potentially granting passwordless root access to a user or process.

  • Abuse Elevation Control Mechanism: Sudo and Sudo Caching 1 TTPs 10 IoCs

    Abuse sudo or cached sudo credentials to execute code.

  • Reads CPU attributes 1 TTPs 7 IoCs
  • Reads runtime system information 43 IoCs

    Reads data from /proc virtual filesystem.

  • System Network Configuration Discovery 1 TTPs 1 IoCs

    Adversaries may gather information about the network configuration of a system.

Processes

  • /tmp/preparar.sh
    /tmp/preparar.sh
    1⤵
    • Adds new SSH keys
    PID:715
    • /usr/bin/sudo
      sudo -v
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:721
    • /usr/bin/sudo
      sudo tee /etc/sudoers.d/nobox-migracao
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:731
      • /usr/bin/tee
        tee /etc/sudoers.d/nobox-migracao
        3⤵
        • Modifies sudoers policy
        • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
        PID:737
    • /usr/bin/sudo
      sudo chmod 440 /etc/sudoers.d/nobox-migracao
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:739
      • /usr/sbin/sendmail
        sendmail -t
        3⤵
        • Reads runtime system information
        PID:743
        • /usr/sbin/exim4
          /usr/sbin/exim4 -Mc 1wwIxJ-0000Bz-HS
          4⤵
          • Reads CPU attributes
          PID:754
    • /usr/bin/sudo
      sudo systemsetup -setremotelogin on
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:746
      • /usr/sbin/sendmail
        sendmail -t
        3⤵
        • Reads runtime system information
        PID:751
        • /usr/sbin/exim4
          /usr/sbin/exim4 -Mc 1wwIxK-0000C7-Uz
          4⤵
          • Reads CPU attributes
          PID:763
    • /usr/bin/sudo
      sudo scutil --set HostName nobox-m1
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:752
      • /usr/sbin/sendmail
        sendmail -t
        3⤵
        • Reads runtime system information
        PID:757
        • /usr/sbin/exim4
          /usr/sbin/exim4 -Mc 1wwIxL-0000CD-Ki
          4⤵
          • Reads CPU attributes
          PID:769
    • /usr/bin/sudo
      sudo scutil --set LocalHostName nobox-m1
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:758
      • /usr/sbin/sendmail
        sendmail -t
        3⤵
        • Reads runtime system information
        PID:761
        • /usr/sbin/exim4
          /usr/sbin/exim4 -Mc 1wwIxM-0000CH-Qr
          4⤵
          • Reads CPU attributes
          PID:773
    • /usr/bin/sudo
      sudo scutil --set ComputerName "Nobox M1 (producao)"
      2⤵
      • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
      • Reads runtime system information
      PID:762
      • /usr/sbin/sendmail
        sendmail -t
        3⤵
        • Reads runtime system information
        PID:766
    • /bin/mkdir
      mkdir -p /root/.ssh
      2⤵
      • Reads runtime system information
      PID:770
    • /bin/grep
      grep -q "claude-comando@macbook-principal" /root/.ssh/authorized_keys
      2⤵
      • System Network Configuration Discovery
      PID:771
    • /bin/chmod
      chmod 700 /root/.ssh
      2⤵
        PID:772
      • /bin/chmod
        chmod 600 /root/.ssh/authorized_keys
        2⤵
          PID:774
        • /usr/bin/sudo
          sudo pmset -a sleep 0 displaysleep 10 womp 1
          2⤵
          • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
          • Reads runtime system information
          PID:777
          • /usr/sbin/sendmail
            sendmail -t
            3⤵
            • Reads runtime system information
            PID:781
            • /usr/sbin/exim4
              /usr/sbin/exim4 -Mc 1wwIxT-0000Cb-2E
              4⤵
              • Reads CPU attributes
              PID:788
        • /usr/bin/sudo
          sudo systemsetup -setrestartpowerfailure on
          2⤵
          • Abuse Elevation Control Mechanism: Sudo and Sudo Caching
          • Reads runtime system information
          PID:782
          • /usr/sbin/sendmail
            sendmail -t
            3⤵
            • Reads runtime system information
            PID:786
        • /bin/sleep
          sleep 20
          2⤵
            PID:792
          • /bin/sleep
            sleep 20
            2⤵
              PID:846
            • /bin/sleep
              sleep 20
              2⤵
                PID:878
              • /bin/sleep
                sleep 20
                2⤵
                  PID:880
                • /bin/sleep
                  sleep 20
                  2⤵
                    PID:882
                  • /bin/sleep
                    sleep 20
                    2⤵
                      PID:884
                  • /usr/sbin/exim4
                    /usr/sbin/exim4 -Mc 1wwIxO-0000CM-25
                    1⤵
                    • Reads CPU attributes
                    PID:776
                  • /usr/sbin/exim4
                    /usr/sbin/exim4 -Mc 1wwIxU-0000Cg-L3
                    1⤵
                    • Reads CPU attributes
                    PID:793

                  Network

                        MITRE ATT&CK Enterprise v16

                        Replay Monitor

                        Loading Replay Monitor...

                        Downloads

                        nobox-migracao

                        • Path /etc/sudoers.d/nobox-migracao
                        • Size 25B
                        • SHA256 913c6467a4abf3a2bd0ae2af3e0326bb490368890709f8a52eeec9926ce61da0
                        • MD5 SHA1 SHA512

                        authorized_keys

                        • Path /root/.ssh/authorized_keys
                        • Size 114B
                        • SHA256 914d0d21e796b6d963be76a2b75fdb5b12c2dff43e112d4a9217d3d969a12387
                        • MD5 SHA1 SHA512 TLSH

                        user

                        • Path /var/mail/user
                        • Size 834B
                        • SHA256 29f513bc761c1ca555054a62973456e05bedd44756384470be1955208db3ccaf
                        • MD5 SHA1 SHA512 TLSH

                        user

                        • Path /var/mail/user
                        • Size 1KB
                        • SHA256 740fb32e9baaf86e8595ecd4767d0feb1b2586e01e550d4966720c86be16bc3d
                        • MD5 SHA1 SHA512 TLSH

                        user

                        • Path /var/mail/user
                        • Size 2KB
                        • SHA256 309297ae4283c8792d557c350df917096ded8b1db6d70b313e234dd87fe83f1a
                        • MD5 SHA1 SHA512 TLSH

                        user

                        • Path /var/mail/user
                        • Size 3KB
                        • SHA256 02fbd21fdb5aad3cf58eee675ed9fd60fdefe49c328394657d190aa616bc7b35
                        • MD5 SHA1 SHA512 TLSH

                        user

                        • Path /var/mail/user
                        • Size 4KB
                        • SHA256 d53bc29a1338f59b1b6f852a9c917f8e248f604865e6eaf563aaea6a6b6799ab
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        user

                        • Path /var/mail/user
                        • Size 5KB
                        • SHA256 e61f14d24b1a3e8d6e10bab5d13406bd9f42a87519b79323c3006892097ab86e
                        • MD5 SHA1 SHA512 SSDEEP TLSH

                        1wwIxJ-0000Bz-HS-D

                        • Path /var/spool/exim4/input/1wwIxJ-0000Bz-HS-D
                        • Size 155B
                        • SHA256 3769cd0e37b4a18078de69b158d50f3afed3a3485e6287637a52e65adcbb6f0d
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxJ-0000Bz-HS-J

                        • Path /var/spool/exim4/input/1wwIxJ-0000Bz-HS-J
                        • Size 34B
                        • SHA256 21db3a59b2d0ce18fb250b787d6e2c85d12919f5fdf1448c8f48207c4083b159
                        • MD5 SHA1 SHA512

                        1wwIxK-0000C7-Uz-D

                        • Path /var/spool/exim4/input/1wwIxK-0000C7-Uz-D
                        • Size 155B
                        • SHA256 b59ca6d9d04e9fc0e57021e67dc07a29ccec8b8c11799e4657f571746b9071f0
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxL-0000CD-Ki-D

                        • Path /var/spool/exim4/input/1wwIxL-0000CD-Ki-D
                        • Size 155B
                        • SHA256 aee514c3039b19d2537c45a414f9b11c06aadebad1822f989bf6019273664fd1
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxM-0000CH-Qr-D

                        • Path /var/spool/exim4/input/1wwIxM-0000CH-Qr-D
                        • Size 155B
                        • SHA256 e4e23fbb686aa6e81a464b3805fb53850d00c3c3ccd4a004e6d775f128164f02
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxO-0000CM-25-D

                        • Path /var/spool/exim4/input/1wwIxO-0000CM-25-D
                        • Size 155B
                        • SHA256 6d1608e8952810c0e2f24ba3df0a77c701cd39f8dece7f187731b10009840bac
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxT-0000Cb-2E-D

                        • Path /var/spool/exim4/input/1wwIxT-0000Cb-2E-D
                        • Size 155B
                        • SHA256 7591750a958bcc22e2625f5e368521f5affcd8c3b9dbef4d561f49dac2c09224
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxU-0000Cg-L3-D

                        • Path /var/spool/exim4/input/1wwIxU-0000Cg-L3-D
                        • Size 155B
                        • SHA256 f07043616874e7f58bf41df292d2f99a0300c3082a35c2d2feb65f26a3ba29c1
                        • MD5 SHA1 SHA512 TLSH

                        hdr.743

                        • Path /var/spool/exim4/input/hdr.743
                        • Size 897B
                        • SHA256 6a62ed048ab3ad30822f5fd4222a66e9260a5aebe036ee49e558b32604914751
                        • MD5 SHA1 SHA512 TLSH

                        hdr.751

                        • Path /var/spool/exim4/input/hdr.751
                        • Size 897B
                        • SHA256 cd5d03ae4e4f0822e0ea9ee607e31c64cf0d01e3b67c4b7d8d84d4d44c3c064c
                        • MD5 SHA1 SHA512 TLSH

                        hdr.757

                        • Path /var/spool/exim4/input/hdr.757
                        • Size 897B
                        • SHA256 a5b88a7e778652a7ba162222c5a15e8040620ab193fadd5852a2e6ad92a8edac
                        • MD5 SHA1 SHA512 TLSH

                        hdr.761

                        • Path /var/spool/exim4/input/hdr.761
                        • Size 897B
                        • SHA256 abde479f51d3b81e94895d57e5b5177189adad7e122cdb92433d07dec02f47aa
                        • MD5 SHA1 SHA512 TLSH

                        hdr.766

                        • Path /var/spool/exim4/input/hdr.766
                        • Size 897B
                        • SHA256 ec045f3c3c2cb0df6dfc333f9c90ba38adf585d5d2bf11362973d6fafe77451b
                        • MD5 SHA1 SHA512 TLSH

                        hdr.781

                        • Path /var/spool/exim4/input/hdr.781
                        • Size 897B
                        • SHA256 0c0f3cf8bd627a568844828225942d756abf2157c7d3685e25318e8818946d78
                        • MD5 SHA1 SHA512 TLSH

                        hdr.786

                        • Path /var/spool/exim4/input/hdr.786
                        • Size 897B
                        • SHA256 2c27d0776d0bfbb70db6f96ccedcf733aef69c32418582df2f84416af086900f
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxJ-0000Bz-HS

                        • Path /var/spool/exim4/msglog/1wwIxJ-0000Bz-HS
                        • Size 288B
                        • SHA256 57321ece369e5703d25df784ebe7d5be1b5ff33c7664ab0d150d02d37373cb5f
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxJ-0000Bz-HS

                        • Path /var/spool/exim4/msglog/1wwIxJ-0000Bz-HS
                        • Size 89B
                        • SHA256 a9e0def108f30c65d2ab04b386e0c7c5e50a5f56d1b3d8393fd32d1365c003e8
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxK-0000C7-Uz

                        • Path /var/spool/exim4/msglog/1wwIxK-0000C7-Uz
                        • Size 288B
                        • SHA256 033c6806e5f4c811199d2dc16eb6943cc9c701fbe17f70d31b6cf2964caa048e
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxK-0000C7-Uz

                        • Path /var/spool/exim4/msglog/1wwIxK-0000C7-Uz
                        • Size 89B
                        • SHA256 3ff1d7c026d9c40c5478daaa294078fc35898616b93fe44ca187ff7cd49153c5
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxM-0000CH-Qr

                        • Path /var/spool/exim4/msglog/1wwIxM-0000CH-Qr
                        • Size 89B
                        • SHA256 65c60eee1af9e32d99f33b75b408fd20fedd6f860763cfe44ae0bf9c0b3d177f
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxM-0000CH-Qr

                        • Path /var/spool/exim4/msglog/1wwIxM-0000CH-Qr
                        • Size 288B
                        • SHA256 dfa4604f839bd55a52ba31f168effd7c5118fba2fef03955388d78c9c82452e8
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxO-0000CM-25

                        • Path /var/spool/exim4/msglog/1wwIxO-0000CM-25
                        • Size 89B
                        • SHA256 c9b4533469d3e7a923ae5b16c8d26e80ed092f8d2803901b860935ff0c21c6c7
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxO-0000CM-25

                        • Path /var/spool/exim4/msglog/1wwIxO-0000CM-25
                        • Size 288B
                        • SHA256 324391bd5c31551598bd20bdcbf86d12e9479732989522c59f8e78b1976b7353
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxT-0000Cb-2E

                        • Path /var/spool/exim4/msglog/1wwIxT-0000Cb-2E
                        • Size 89B
                        • SHA256 1fdffa44e5a2641071076e086d4cfbe91dc4b212071bfa1737fab8d37503404e
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxT-0000Cb-2E

                        • Path /var/spool/exim4/msglog/1wwIxT-0000Cb-2E
                        • Size 288B
                        • SHA256 0cc4d2f1628f5f95c32bd800319fa350f02fcc318fc3be3cd2be8a1ab5b8a9eb
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxU-0000Cg-L3

                        • Path /var/spool/exim4/msglog/1wwIxU-0000Cg-L3
                        • Size 89B
                        • SHA256 1354d1712a528a9389da849b3321d2ec0a535f8551ed4d3ecacc47137a490914
                        • MD5 SHA1 SHA512 TLSH

                        1wwIxU-0000Cg-L3

                        • Path /var/spool/exim4/msglog/1wwIxU-0000Cg-L3
                        • Size 288B
                        • SHA256 ec499e1d3c3b43670866049490a19fcf4c227c852cd1a7ae19ec8db2692af186
                        • MD5 SHA1 SHA512 TLSH