Analysis

  • max time kernel
    144s
  • max time network
    147s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 21:20

General

  • Target

    b3be1dd63db308b92cc3704faa396da6b544f3ab4e212f62de3aab9326229be1.exe

  • Size

    908KB

  • MD5

    3c1429579cb97febfe58dc0f8cd6fbe9

  • SHA1

    79885de392a4b5776522b28ef7b9ed5dd9d5319c

  • SHA256

    b3be1dd63db308b92cc3704faa396da6b544f3ab4e212f62de3aab9326229be1

  • SHA512

    a4bf3829c8fd4b983846d52c3fc10608ff631abb0b355a738f9c5128697c0464e06c5b10f75215eab643f98e09b220da21adf4a74fdc807ff1ed5da0f2e58484

Malware Config

Extracted

Family

gozi_rm3

Attributes
build
300854

Extracted

Family

gozi_rm3

Botnet

202004141

C2

https://devicelease.xyz

Attributes
build
300854
dga_base_url
constitution.org/usdeclar.txt
dga_crc
0x4eb7d2ca
dga_season
10
dga_tlds
com
ru
org
exe_type
loader
server_id
12
url_path
index.htm
rsa_pubkey.plain
serpent.plain

Signatures

  • Gozi RM3

    A heavily modified version of Gozi using RM3 loader.

  • Modifies Internet Explorer settings ⋅ 1 TTPs 64 IoCs
  • Suspicious use of FindShellTrayWindow ⋅ 4 IoCs
  • Suspicious use of SetWindowsHookEx ⋅ 16 IoCs
  • Suspicious use of WriteProcessMemory ⋅ 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b3be1dd63db308b92cc3704faa396da6b544f3ab4e212f62de3aab9326229be1.exe
    "C:\Users\Admin\AppData\Local\Temp\b3be1dd63db308b92cc3704faa396da6b544f3ab4e212f62de3aab9326229be1.exe"
    PID:1668
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    Modifies Internet Explorer settings
    Suspicious use of FindShellTrayWindow
    Suspicious use of SetWindowsHookEx
    Suspicious use of WriteProcessMemory
    PID:1508
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1508 CREDAT:275457 /prefetch:2
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:760
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1508 CREDAT:472074 /prefetch:2
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:2004
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    Modifies Internet Explorer settings
    Suspicious use of FindShellTrayWindow
    Suspicious use of SetWindowsHookEx
    Suspicious use of WriteProcessMemory
    PID:1228
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1228 CREDAT:275457 /prefetch:2
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:1096
  • C:\Program Files\Internet Explorer\iexplore.exe
    "C:\Program Files\Internet Explorer\iexplore.exe" -Embedding
    Modifies Internet Explorer settings
    Suspicious use of FindShellTrayWindow
    Suspicious use of SetWindowsHookEx
    Suspicious use of WriteProcessMemory
    PID:1332
    • C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE
      "C:\Program Files (x86)\Internet Explorer\IEXPLORE.EXE" SCODEF:1332 CREDAT:275457 /prefetch:2
      Modifies Internet Explorer settings
      Suspicious use of SetWindowsHookEx
      PID:1424

Network

MITRE ATT&CK Matrix

Collection

    Command and Control

      Credential Access

        Defense Evasion

        Discovery

          Execution

            Exfiltration

              Impact

                Initial Access

                  Lateral Movement

                    Persistence

                      Privilege Escalation

                        Replay Monitor

                        00:00 00:00

                        Downloads

                        • memory/1668-54-0x0000000075BA1000-0x0000000075BA3000-memory.dmp
                        • memory/1668-55-0x0000000000230000-0x000000000023C000-memory.dmp
                        • memory/1668-56-0x0000000000400000-0x00000000004E5000-memory.dmp
                        • memory/1668-57-0x0000000000270000-0x0000000000281000-memory.dmp