0x000400000001b711-2723.exe

General
Target

0x000400000001b711-2723.exe

Size

286KB

Sample

201125-9877esbt9s

Score
10 /10
MD5

75ea3fd13086e51a3e2833263dc726cd

SHA1

9f27dc43612b0d5a7d4dbef527b4dbd042957e57

SHA256

43929c8548157f399526e8318e42e34f78055b22bb4b3e6e83ab58f63d017f44

SHA512

54941d724da104089b48af4eeb0b4491868d2910044fc29362f6093160f640941739922fc02fcd831a8885584125497023543f482b87add6f0f343e7f67e3b9f

Malware Config

Extracted

Family smokeloader
Version 2020
C2

http://naritouzina.net/

http://nukaraguasleep.net/

http://notfortuaj.net/

http://natuturalistic.net/

http://zaniolofusa.net/

http://vintrsi.com/upload/

http://woatdert.com/upload/

http://waruse.com/upload/

rc4.i32
rc4.i32

Extracted

Family smokeloader
Version 2019
C2

http://10022020newfolder1002002131-service1002.space/

http://10022020newfolder1002002231-service1002.space/

http://10022020newfolder3100231-service1002.space/

http://10022020newfolder1002002431-service1002.space/

http://10022020newfolder1002002531-service1002.space/

http://10022020newfolder33417-01242510022020.space/

http://10022020test125831-service1002012510022020.space/

http://10022020test136831-service1002012510022020.space/

http://10022020test147831-service1002012510022020.space/

http://10022020test146831-service1002012510022020.space/

http://10022020test134831-service1002012510022020.space/

http://10022020est213531-service100201242510022020.ru/

http://10022020yes1t3481-service1002012510022020.ru/

http://10022020test13561-service1002012510022020.su/

http://10022020test14781-service1002012510022020.info/

http://10022020test13461-service1002012510022020.net/

http://10022020test15671-service1002012510022020.tech/

http://10022020test12671-service1002012510022020.online/

http://10022020utest1341-service1002012510022020.ru/

http://10022020uest71-service100201dom2510022020.ru/

http://10022020test61-service1002012510022020.website/

http://10022020test51-service1002012510022020.xyz/

http://10022020test41-service100201pro2510022020.ru/

http://10022020yest31-service100201rus2510022020.ru/

http://10022020rest21-service1002012510022020.eu/

http://10022020test11-service1002012510022020.press/

http://10022020newfolder4561-service1002012510022020.ru/

http://10022020rustest213-service1002012510022020.ru/

http://10022020test281-service1002012510022020.ru/

http://10022020test261-service1002012510022020.space/

http://10022020yomtest251-service1002012510022020.ru/

http://10022020yirtest231-service1002012510022020.ru/

rc4.i32
rc4.i32
Targets
Target

0x000400000001b711-2723.exe

MD5

75ea3fd13086e51a3e2833263dc726cd

Filesize

286KB

Score
10 /10
SHA1

9f27dc43612b0d5a7d4dbef527b4dbd042957e57

SHA256

43929c8548157f399526e8318e42e34f78055b22bb4b3e6e83ab58f63d017f44

SHA512

54941d724da104089b48af4eeb0b4491868d2910044fc29362f6093160f640941739922fc02fcd831a8885584125497023543f482b87add6f0f343e7f67e3b9f

Tags

Signatures

  • AgentTesla

    Description

    Agent Tesla is a remote access tool (RAT) written in visual basic.

    Tags

  • Raccoon

    Description

    Simple but powerful infostealer which was very active in 2019.

    Tags

  • RedLine

    Description

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

    Tags

  • SmokeLoader

    Description

    Modular backdoor trojan in use since 2014.

    Tags

  • Tofsee

    Description

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

    Tags

  • Windows security bypass

    Tags

    TTPs

    Disabling Security Tools Modify Registry
  • AgentTesla Payload

  • Creates new service(s)

    Tags

    TTPs

    New Service
  • Drops file in Drivers directory

  • Executes dropped EXE

  • Modifies Windows Firewall

    Tags

    TTPs

    Modify Existing Service
  • Sets service image path in registry

    Tags

    TTPs

    Registry Run Keys / Startup Folder Modify Registry
  • UPX packed file

    Description

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

    Tags

  • VMProtect packed file

    Description

    Detects executables packed with VMProtect commercial packer.

    Tags

  • Deletes itself

  • Loads dropped DLL

  • Modifies file permissions

    Tags

    TTPs

    File Permissions Modification
  • Reads user/profile data of local email clients

    Description

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

    Tags

    TTPs

    Data from Local System Credentials in Files
  • 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 System Credentials in Files
  • Accesses 2FA software files, possible credential harvesting

    Tags

    TTPs

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

    Tags

    TTPs

    Data from Local System Credentials in Files
  • Adds Run key to start application

    Tags

    TTPs

    Registry Run Keys / Startup Folder Modify Registry
  • 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
  • JavaScript code in executable

  • Legitimate hosting services abused for malware hosting/C2

    TTPs

    Web Service
  • Looks up external IP address via web service

    Description

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

  • Drops file in System32 directory

  • Suspicious use of SetThreadContext

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