Resubmissions

10-11-2021 14:52

211110-r84p8aedej 10

09-11-2021 13:19

211109-qkrv3sfcg4 10

Analysis

  • max time kernel
    169s
  • max time network
    161s
  • platform
    windows7_x64
  • resource
    win7-en-20211014
  • submitted
    09-11-2021 13:19

General

  • Target

    022e3c30a1504fde93e24b2206f804a923ee9785e4db81a166939a1e7b928b66.exe

  • Size

    403KB

  • MD5

    f957e397e71010885b67f2afe37d8161

  • SHA1

    a8bf84b971b37ac6e7f66c5e5a7e971a7741401e

  • SHA256

    022e3c30a1504fde93e24b2206f804a923ee9785e4db81a166939a1e7b928b66

  • SHA512

    8b5e9cb926fafc295c403c1fce7aa883db3a327e58c3295e9a081a8937bed28e305cca08c2c7d98080818095ea99bb4047e10aa2f61e3e4d6d965aef6d16a4f6

Malware Config

Signatures

  • Modifies Windows Defender Real-time Protection settings 3 TTPs
  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Loads dropped DLL 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

  • Looks up external IP address via web service 2 IoCs

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

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\022e3c30a1504fde93e24b2206f804a923ee9785e4db81a166939a1e7b928b66.exe
    "C:\Users\Admin\AppData\Local\Temp\022e3c30a1504fde93e24b2206f804a923ee9785e4db81a166939a1e7b928b66.exe"
    1⤵
    • Checks computer location settings
    • Loads dropped DLL
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1280
    • C:\Users\Admin\Pictures\Adobe Films\gXvDFk0ju8Sh5FR2VWH1Rgxi.exe
      "C:\Users\Admin\Pictures\Adobe Films\gXvDFk0ju8Sh5FR2VWH1Rgxi.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious behavior: EnumeratesProcesses
      PID:1548
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1280 -s 1392
      2⤵
      • Program crash
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of AdjustPrivilegeToken
      PID:1476

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Modify Existing Service

1
T1031

Defense Evasion

Modify Registry

1
T1112

Disabling Security Tools

1
T1089

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

1
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\Pictures\Adobe Films\gXvDFk0ju8Sh5FR2VWH1Rgxi.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • \Users\Admin\Pictures\Adobe Films\gXvDFk0ju8Sh5FR2VWH1Rgxi.exe
    MD5

    3f22bd82ee1b38f439e6354c60126d6d

    SHA1

    63b57d818f86ea64ebc8566faeb0c977839defde

    SHA256

    265c2ddc8a21e6fa8dfaa38ef0e77df8a2e98273a1abfb575aef93c0cc8ee96a

    SHA512

    b73e8e17e5e99d0e9edfb690ece8b0c15befb4d48b1c4f2fe77c5e3daf01df35858c06e1403a8636f86363708b80123d12122cb821a86b575b184227c760988f

  • memory/1280-55-0x0000000075F41000-0x0000000075F43000-memory.dmp
    Filesize

    8KB

  • memory/1280-56-0x0000000003E60000-0x0000000003FAC000-memory.dmp
    Filesize

    1MB

  • memory/1476-60-0x0000000000000000-mapping.dmp
  • memory/1476-61-0x0000000000320000-0x0000000000321000-memory.dmp
    Filesize

    4KB

  • memory/1548-58-0x0000000000000000-mapping.dmp