General

  • Target

    461f0f86f52bfa5fbed84023d0a9c8652bcbca34fea76ad0cb5bb8c503b65c9a_dump.exe

  • Size

    32KB

  • Sample

    240116-k3bnxsgfck

  • MD5

    a24f02aa70607beea6af7963d2a51a4d

  • SHA1

    fdbf0458799b50f52b231151d84c5d68f6e6da95

  • SHA256

    9a77f554fbc23a4d71cbb980b5dcdef80291fa70849430a929a1e1bb9cebc2dc

  • SHA512

    2d8d64931184e5d202e097157fc783ba6245b78374a1baefed1abc31a0458acc486f389447bd7cdc7ed2f38a3f91ecbced50923575233e470837790590c52222

  • SSDEEP

    768:OAUqYpNSIoKpDd1KM02kQhx4hOtFceWzYqvz0bOS:HLo8LKtd1PBkQD4UtFceWnz

Malware Config

Extracted

Family

smokeloader

Botnet

up3

Extracted

Family

smokeloader

Version

2020

C2

http://host-file-host6.com/

http://host-host-file8.com/

rc4.i32
rc4.i32

Targets

    • Target

      461f0f86f52bfa5fbed84023d0a9c8652bcbca34fea76ad0cb5bb8c503b65c9a_dump.exe

    • Size

      32KB

    • MD5

      a24f02aa70607beea6af7963d2a51a4d

    • SHA1

      fdbf0458799b50f52b231151d84c5d68f6e6da95

    • SHA256

      9a77f554fbc23a4d71cbb980b5dcdef80291fa70849430a929a1e1bb9cebc2dc

    • SHA512

      2d8d64931184e5d202e097157fc783ba6245b78374a1baefed1abc31a0458acc486f389447bd7cdc7ed2f38a3f91ecbced50923575233e470837790590c52222

    • SSDEEP

      768:OAUqYpNSIoKpDd1KM02kQhx4hOtFceWzYqvz0bOS:HLo8LKtd1PBkQD4UtFceWnz

    • BetaBot

      Beta Bot is a Trojan that infects computers and disables Antivirus.

    • Modifies firewall policy service

    • Modifies security service

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Disables taskbar notifications via registry modification

    • Disables use of System Restore points

    • Sets file execution options in registry

    • Sets service image path in registry

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • Adds Run key to start application

    • Checks for any installed AV software in registry

    • Checks whether UAC is enabled

    • Drops desktop.ini file(s)

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Matrix ATT&CK v13

Execution

Scheduled Task/Job

1
T1053

Persistence

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

1
T1053

Privilege Escalation

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

1
T1053

Defense Evasion

Modify Registry

8
T1112

Discovery

Query Registry

6
T1012

System Information Discovery

7
T1082

Software Discovery

1
T1518

Security Software Discovery

1
T1518.001

Peripheral Device Discovery

1
T1120

Impact

Inhibit System Recovery

1
T1490

Tasks