General

  • Target

    9589a5245d4bf531062907595fc257b4e9bebd27a430a29b14f01c236b9481fd

  • Size

    3.7MB

  • Sample

    220312-hrdysshcd9

  • MD5

    404b28f920daf3164c071c81a1e949b2

  • SHA1

    e0f5e44af208ab9a41a0546a9362cd407b0474cc

  • SHA256

    9589a5245d4bf531062907595fc257b4e9bebd27a430a29b14f01c236b9481fd

  • SHA512

    d19736d832ca3091f5d94ba15c578519b3af4cfe31f3b7ffbbd07fdf8cc9f8b21ae797528f2f3d3082198c9a1269004e3d68cc1a9032108c03f391e220ad1ff9

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://conceitosseg.com/upload/

http://integrasidata.com/upload/

http://ozentekstil.com/upload/

http://finbelportal.com/upload/

http://telanganadigital.com/upload/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

Cana

C2

176.111.174.254:56328

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.71/cs/SkyDrive.oo

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.71/cs/Fax.oo

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.71/cs/RED.oo

Extracted

Language
ps1
Deobfuscated
URLs
ps1.dropper

http://62.204.41.71/Offer/Offer.oo

Extracted

Family

vidar

Version

39.4

Botnet

706

C2

https://sergeevih43.tumblr.com/

Attributes
  • profile_id

    706

Extracted

Family

redline

Botnet

Ani

C2

detuyaluro.xyz:80

Extracted

Family

tofsee

C2

patmushta.info

ovicrush.cn

Targets

    • Target

      9589a5245d4bf531062907595fc257b4e9bebd27a430a29b14f01c236b9481fd

    • Size

      3.7MB

    • MD5

      404b28f920daf3164c071c81a1e949b2

    • SHA1

      e0f5e44af208ab9a41a0546a9362cd407b0474cc

    • SHA256

      9589a5245d4bf531062907595fc257b4e9bebd27a430a29b14f01c236b9481fd

    • SHA512

      d19736d832ca3091f5d94ba15c578519b3af4cfe31f3b7ffbbd07fdf8cc9f8b21ae797528f2f3d3082198c9a1269004e3d68cc1a9032108c03f391e220ad1ff9

    • Modifies Windows Defender Real-time Protection settings

    • 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 NtCreateUserProcessOtherParentProcess

    • Tofsee

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

    • Vidar

      Vidar is an infostealer based on Arkei stealer.

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

    • Vidar Stealer

    • ASPack v2.12-2.42

      Detects executables packed with ASPack v2.12-2.42

    • Blocklisted process makes network request

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Possible privilege escalation attempt

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Stops running service(s)

    • UPX packed file

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

    • 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.

    • Loads dropped DLL

    • Modifies file permissions

    • Reads user/profile data of local email clients

      Email clients store some user data on disk where infostealers will often target it.

    • Reads user/profile data of web browsers

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

    • Accesses 2FA software files, possible credential harvesting

    • 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.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Modify Existing Service

3
T1031

New Service

1
T1050

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

New Service

1
T1050

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

Virtualization/Sandbox Evasion

1
T1497

Hidden Files and Directories

2
T1158

Impair Defenses

1
T1562

File Permissions Modification

1
T1222

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

7
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

7
T1082

Peripheral Device Discovery

1
T1120

Process Discovery

1
T1057

Collection

Data from Local System

4
T1005

Command and Control

Web Service

1
T1102

Impact

Service Stop

1
T1489

Tasks