General

  • Target

    9c32bd3ba8c37a5667aae34bbc4a84a9.exe

  • Size

    340KB

  • Sample

    211028-tcszysgfcl

  • MD5

    9c32bd3ba8c37a5667aae34bbc4a84a9

  • SHA1

    59df4764d50b6859ffcb1bbf660f27d2b6bf8d1c

  • SHA256

    14279e34ce19812a529d3f1cea16e54d57a40322ba34b63a85784d4fc5672992

  • SHA512

    cd72c85cd317db7867bd39c2d9b438751f3d1fbfd472fc3d55191f5f3f1b7727a19dc81e626b54a64acd684adc880012f03d6b9b1573f9bd00c415c6cb04cd85

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://brandyjaggers.com/upload/

http://andbal.com/upload/

http://alotofquotes.com/upload/

http://szpnc.cn/upload/

http://uggeboots.com/upload/

http://100klv.com/upload/

http://rapmusic.at/upload/

rc4.i32
rc4.i32

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

https://raw.githubusercontent.com/sqlitey/sqlite/master/speed.ps1

Targets

    • Target

      9c32bd3ba8c37a5667aae34bbc4a84a9.exe

    • Size

      340KB

    • MD5

      9c32bd3ba8c37a5667aae34bbc4a84a9

    • SHA1

      59df4764d50b6859ffcb1bbf660f27d2b6bf8d1c

    • SHA256

      14279e34ce19812a529d3f1cea16e54d57a40322ba34b63a85784d4fc5672992

    • SHA512

      cd72c85cd317db7867bd39c2d9b438751f3d1fbfd472fc3d55191f5f3f1b7727a19dc81e626b54a64acd684adc880012f03d6b9b1573f9bd00c415c6cb04cd85

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • suricata: ET MALWARE ServHelper CnC Inital Checkin

      suricata: ET MALWARE ServHelper CnC Inital Checkin

    • suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

      suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile

    • Grants admin privileges

      Uses net.exe to modify the user's privileges.

    • Blocklisted process makes network request

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies RDP port number used by Windows

    • Sets DLL path for service in the registry

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Deletes itself

    • Loads dropped DLL

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Account Manipulation

1
T1098

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

1
T1082

Lateral Movement

Remote Desktop Protocol

1
T1076

Tasks