Resubmissions

09-10-2021 06:02

211009-grepnafad7 10

08-10-2021 19:47

211008-yhw11segg5 10

08-10-2021 19:00

211008-xnq7aaegf2 10

General

  • Target

    211f7686f518eb521b7421393ce0b3fac878b2d5c4ee61629b1d4b2a0d3dcdd3

  • Size

    166KB

  • Sample

    211009-grepnafad7

  • MD5

    38662eca83bf7fff531b9bdc43f8ed52

  • SHA1

    1426c264bd6067cc8f5a76ac10182c380a18eb5b

  • SHA256

    211f7686f518eb521b7421393ce0b3fac878b2d5c4ee61629b1d4b2a0d3dcdd3

  • SHA512

    4cdf5822e696a511bb689bfedad92ad10f3b148045eacd22977daa5b3397ee5e449db4fc31d97b3ac7e459ea3905eadf71ab6bfb91b9ff8d5219edec8278644e

Malware Config

Extracted

Family

smokeloader

Version

2020

C2

http://fazanaharahe10.top/

http://xandelissane20.top/

http://ustiassosale30.top/

http://cytheriata40.top/

http://ggiergionard50.top/

rc4.i32
rc4.i32

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Extracted

Family

raccoon

Version

1.8.2

Botnet

2ea41939378a473cbe7002fd507389778c0f10e7

Attributes
  • url4cnc

    http://teletop.top/stevuitreen

    http://teleta.top/stevuitreen

    https://t.me/stevuitreen

rc4.plain
rc4.plain

Extracted

Family

vidar

Version

41.2

Botnet

1033

C2

https://mas.to/@serg4325

Attributes
  • profile_id

    1033

Extracted

Family

redline

Botnet

boca

C2

144.217.17.184:14487

Extracted

Family

raccoon

Version

1.8.2

Botnet

8d179b9e611eee525425544ee8c6d77360ab7cd9

Attributes
  • url4cnc

    http://teletop.top/agrybirdsgamerept

    http://teleta.top/agrybirdsgamerept

    https://t.me/agrybirdsgamerept

rc4.plain
rc4.plain

Targets

    • Target

      211f7686f518eb521b7421393ce0b3fac878b2d5c4ee61629b1d4b2a0d3dcdd3

    • Size

      166KB

    • MD5

      38662eca83bf7fff531b9bdc43f8ed52

    • SHA1

      1426c264bd6067cc8f5a76ac10182c380a18eb5b

    • SHA256

      211f7686f518eb521b7421393ce0b3fac878b2d5c4ee61629b1d4b2a0d3dcdd3

    • SHA512

      4cdf5822e696a511bb689bfedad92ad10f3b148045eacd22977daa5b3397ee5e449db4fc31d97b3ac7e459ea3905eadf71ab6bfb91b9ff8d5219edec8278644e

    • 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.

    • Suspicious use of NtCreateProcessExOtherParentProcess

    • 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

    • Creates new service(s)

    • Downloads MZ/PE file

    • Executes dropped EXE

    • Modifies Windows Firewall

    • Sets service image path in registry

    • Checks BIOS information in registry

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

    • Deletes itself

    • 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 2FA software files, possible credential harvesting

    • Accesses Microsoft Outlook accounts

    • Accesses Microsoft Outlook profiles

    • 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

    • Drops file in System32 directory

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • 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

1
T1060

Privilege Escalation

New Service

1
T1050

Defense Evasion

Virtualization/Sandbox Evasion

1
T1497

Modify Registry

1
T1112

Credential Access

Credentials in Files

4
T1081

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

1
T1497

System Information Discovery

6
T1082

Peripheral Device Discovery

1
T1120

Collection

Data from Local System

4
T1005

Email Collection

2
T1114

Tasks