General

  • Target

    f071a9a50163c04aa45daae82b852f72.exe

  • Size

    338KB

  • Sample

    211121-tb73gseagr

  • MD5

    f071a9a50163c04aa45daae82b852f72

  • SHA1

    0aefaad339329762ac863043993a52f2aa10b60b

  • SHA256

    09cfbddd9deb3cbcb96d615e4d39da78d275d513bc789a6afe6416ce5ab8c63d

  • SHA512

    00047a2d676022a8ea1fca8316dd3277174b82639547c9feb5511799db92fba344e474add6d5a9821dcb839d39052c8d01950190b6ed68db935bac639b8e1bf8

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

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

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

rc4.i32
rc4.i32

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

Extracted

Family

redline

C2

185.159.80.90:38637

Extracted

Family

redline

Botnet

1823930346

C2

185.92.74.63:10829

Targets

    • Target

      f071a9a50163c04aa45daae82b852f72.exe

    • Size

      338KB

    • MD5

      f071a9a50163c04aa45daae82b852f72

    • SHA1

      0aefaad339329762ac863043993a52f2aa10b60b

    • SHA256

      09cfbddd9deb3cbcb96d615e4d39da78d275d513bc789a6afe6416ce5ab8c63d

    • SHA512

      00047a2d676022a8ea1fca8316dd3277174b82639547c9feb5511799db92fba344e474add6d5a9821dcb839d39052c8d01950190b6ed68db935bac639b8e1bf8

    • RedLine

      RedLine Stealer is a malware family written in C#, first appearing in early 2020.

    • RedLine Payload

    • SmokeLoader

      Modular backdoor trojan in use since 2014.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • Tofsee

      Backdoor/botnet which carries out malicious activities based on commands from a C2 server.

    • Windows security bypass

    • xmrig

      XMRig is a high performance, open source, cross platform CPU/GPU miner.

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Deletes itself

    • Loads dropped DLL

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Accesses cryptocurrency files/wallets, possible credential harvesting

    • Checks installed software on the system

      Looks up Uninstall key entries in the registry to enumerate software on the system.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

New Service

1
T1050

Modify Existing Service

1
T1031

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

2
T1012

System Information Discovery

2
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Tasks