Resubmissions

22-09-2022 09:08

220922-k32v4sahh9 10

22-09-2022 09:02

220922-kzq97sefer 10

22-09-2022 08:41

220922-kly3wsagc3 10

General

  • Target

    Document.pdf.scr

  • Size

    700.0MB

  • Sample

    220922-k32v4sahh9

  • MD5

    42a123d2a8c6b9bf813d4ba30c6f7339

  • SHA1

    020db224e295b652601f34b1b5284f3ad6bdf22f

  • SHA256

    4e5b72658b3ee150f255b726931d387e897d1e5db4f40fbd6a3181e1908671af

  • SHA512

    aec4d9c6c9255ad4764a737bb38f68e525d95d38d634e286100c896683fa1bc5f3b62cdc829b6f990fb2570455a6f1c3a7c81e117499065520c24325700cccaf

  • SSDEEP

    98304:Xm27HCFxPcIIqb9tIKdgEezl6nW1WIxV2UBPB3VsYT:XmHbPcIIqb9u15zl6nW1WA2rYT

Malware Config

Extracted

Family

redline

Botnet

web

C2

62.204.41.139:25190

Attributes
  • auth_value

    2b0495835b75f494572b5792f0b7a9e1

Targets

    • Target

      Document.pdf.scr

    • Size

      700.0MB

    • MD5

      42a123d2a8c6b9bf813d4ba30c6f7339

    • SHA1

      020db224e295b652601f34b1b5284f3ad6bdf22f

    • SHA256

      4e5b72658b3ee150f255b726931d387e897d1e5db4f40fbd6a3181e1908671af

    • SHA512

      aec4d9c6c9255ad4764a737bb38f68e525d95d38d634e286100c896683fa1bc5f3b62cdc829b6f990fb2570455a6f1c3a7c81e117499065520c24325700cccaf

    • SSDEEP

      98304:Xm27HCFxPcIIqb9tIKdgEezl6nW1WIxV2UBPB3VsYT:XmHbPcIIqb9u15zl6nW1WA2rYT

    • RedLine

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

    • RedLine payload

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Loads dropped DLL

    • Obfuscated with Agile.Net obfuscator

      Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

    • 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.

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    • Detected potential entity reuse from brand microsoft.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

5
T1012

System Information Discovery

5
T1082

Peripheral Device Discovery

2
T1120

Tasks