General

  • Target

    c9411538eeb8176ec4d5c0f8f701c9f70df8dbb344e8ceefd9ba49b5610415a3

  • Size

    277KB

  • Sample

    220117-ht941sghf9

  • MD5

    ef3a9e5e4472b50b292ec0d18f1c7e80

  • SHA1

    c97ad679be12b9b92bb00322f4e762c6d7d77fd3

  • SHA256

    c9411538eeb8176ec4d5c0f8f701c9f70df8dbb344e8ceefd9ba49b5610415a3

  • SHA512

    9b55d9dbc9aa29a98d5cb25cefea670a952be426ffd9273538be91bb158fba01b8dd1354141ae4734486875c99fb8c2dd3530464b43b07c841bcba2a9558ee01

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://host-data-coin-11.com/

http://file-coin-host-12.com/

http://srtuiyhuali.at/

http://fufuiloirtu.com/

http://amogohuigotuli.at/

http://novohudosovu.com/

http://brutuilionust.com/

http://bubushkalioua.com/

http://dumuilistrati.at/

http://verboliatsiaeeees.com/

rc4.i32
rc4.i32
rc4.i32
rc4.i32

Extracted

Family

arkei

Botnet

Default

C2

http://file-file-host4.com/tratata.php

Extracted

Family

tofsee

C2

patmushta.info

parubey.info

Extracted

Family

raccoon

Version

1.8.4-hotfixs

rc4.plain

Targets

    • Target

      c9411538eeb8176ec4d5c0f8f701c9f70df8dbb344e8ceefd9ba49b5610415a3

    • Size

      277KB

    • MD5

      ef3a9e5e4472b50b292ec0d18f1c7e80

    • SHA1

      c97ad679be12b9b92bb00322f4e762c6d7d77fd3

    • SHA256

      c9411538eeb8176ec4d5c0f8f701c9f70df8dbb344e8ceefd9ba49b5610415a3

    • SHA512

      9b55d9dbc9aa29a98d5cb25cefea670a952be426ffd9273538be91bb158fba01b8dd1354141ae4734486875c99fb8c2dd3530464b43b07c841bcba2a9558ee01

    • Arkei

      Arkei is an infostealer written in C++.

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • 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.

    • xmrig

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

    • Arkei Stealer Payload

    • XMRig Miner Payload

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks computer location settings

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

    • 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

    • Adds Run key to start application

    • Checks installed software on the system

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

    • Legitimate hosting services abused for malware hosting/C2

    • 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

2
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Modify Registry

2
T1112

Credential Access

Credentials in Files

2
T1081

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

2
T1005

Command and Control

Web Service

1
T1102

Tasks