General
Target

f073b540a352759bb44d7a1eb641fe61.exe

Size

267KB

Sample

220106-hxnp7abaf9

Score
10/10
MD5

f073b540a352759bb44d7a1eb641fe61

SHA1

af036e219b6e7d6551713ad406d816d9f88b4312

SHA256

067e76900265c87d66a44f765bb720bd310e52181badf19efd63f30210f62001

SHA512

6a1d3e5bfd07f6a4b4d052078f6e09f3c8ff26a553fbfe0a713f580dc7e8a5c73772becb4df82d614aec6172c70f3986565f4bef40accb87bcf183c81c0c2c6e

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

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

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

rc4.i32
rc4.i32

Extracted

Family

tofsee

C2

patmushta.info

parubey.info

Targets
Target

f073b540a352759bb44d7a1eb641fe61.exe

MD5

f073b540a352759bb44d7a1eb641fe61

Filesize

267KB

Score
10/10
SHA1

af036e219b6e7d6551713ad406d816d9f88b4312

SHA256

067e76900265c87d66a44f765bb720bd310e52181badf19efd63f30210f62001

SHA512

6a1d3e5bfd07f6a4b4d052078f6e09f3c8ff26a553fbfe0a713f580dc7e8a5c73772becb4df82d614aec6172c70f3986565f4bef40accb87bcf183c81c0c2c6e

Tags

Signatures

  • Arkei

    Description

    Arkei is an infostealer written in C++.

    Tags

  • SmokeLoader

    Description

    Modular backdoor trojan in use since 2014.

    Tags

  • Suspicious use of NtCreateProcessExOtherParentProcess

  • Tofsee

    Description

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

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security ToolsModify Registry
  • xmrig

    Description

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

    Tags

  • Arkei Stealer Payload

    Tags

  • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    Tags

    TTPs

    Query RegistryVirtualization/Sandbox Evasion
  • XMRig Miner Payload

    Tags

  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Downloads MZ/PE file

  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup FolderModify Registry
  • Checks BIOS information in registry

    Description

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

    TTPs

    Query RegistrySystem Information Discovery
  • Deletes itself

  • Loads dropped DLL

  • Reads user/profile data of web browsers

    Description

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

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Accesses cryptocurrency files/wallets, possible credential harvesting

    Tags

    TTPs

    Data from Local SystemCredentials in Files
  • Checks installed software on the system

    Description

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

    Tags

    TTPs

    Query Registry
  • Checks whether UAC is enabled

    Tags

    TTPs

    System Information Discovery
  • Drops file in System32 directory

  • Suspicious use of NtSetInformationThreadHideFromDebugger

  • Suspicious use of SetThreadContext

Related Tasks

MITRE ATT&CK Matrix
Command and Control
    Credential Access
    Execution
      Exfiltration
        Impact
          Initial Access
            Lateral Movement
              Privilege Escalation