General

  • Target

    924b06fed5002d7dbc6004401b7a519f.exe

  • Size

    145KB

  • Sample

    210926-kzn5vaeefl

  • MD5

    924b06fed5002d7dbc6004401b7a519f

  • SHA1

    669962749b03a129e44c6eec9ef2804ec31493f4

  • SHA256

    858a2b253b7e26188cffde5e58dfb08e4a26ef393f962958d6a1615c93f9917e

  • SHA512

    7b9e2c6765077ebe4e438e86f805792b02e18e2cc4519184c80db4a975db40dec9969a950451f1cdce95a0648f8ff2347fce619e8b40551319ee69e5f577b486

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://naghenrietti1.top/

http://kimballiett2.top/

http://xadriettany3.top/

http://jebeccallis4.top/

http://nityanneron5.top/

http://umayaniela6.top/

http://lynettaram7.top/

http://sadineyalas8.top/

http://geenaldencia9.top/

http://aradysiusep10.top/

rc4.i32
rc4.i32

Extracted

Family

redline

Botnet

installszxc

C2

138.124.186.2:27999

Extracted

Family

redline

Botnet

qq

C2

135.181.142.223:30397

Extracted

Family

raccoon

Botnet

5ff0ccb2bc00dc52d1ad09949e9c7663bc9ca4d4

Attributes
  • url4cnc

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Extracted

Family

raccoon

Botnet

f6d7183c9e82d2a9b81e6c0608450aa66cefb51f

Attributes
  • url4cnc

    https://t.me/justoprostohello

rc4.plain
rc4.plain

Targets

    • Target

      924b06fed5002d7dbc6004401b7a519f.exe

    • Size

      145KB

    • MD5

      924b06fed5002d7dbc6004401b7a519f

    • SHA1

      669962749b03a129e44c6eec9ef2804ec31493f4

    • SHA256

      858a2b253b7e26188cffde5e58dfb08e4a26ef393f962958d6a1615c93f9917e

    • SHA512

      7b9e2c6765077ebe4e438e86f805792b02e18e2cc4519184c80db4a975db40dec9969a950451f1cdce95a0648f8ff2347fce619e8b40551319ee69e5f577b486

    • Modifies security service

    • Raccoon

      Simple but powerful infostealer which was very active in 2019.

    • 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.

    • suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

      suricata: ET MALWARE Win32.Raccoon Stealer Data Exfil Attempt

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

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • 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.

    • Deletes itself

    • Drops startup file

    • Loads dropped DLL

    • 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.

    • Themida packer

      Detects Themida, an advanced Windows software protection system.

    • 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.

    • Checks whether UAC is enabled

    • Legitimate hosting services abused for malware hosting/C2

    • 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

2
T1031

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

2
T1112

Virtualization/Sandbox Evasion

1
T1497

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

4
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

4
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Tasks