Analysis

  • max time kernel
    152s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    28-01-2022 17:44

General

  • Target

    e81dadfcfc8a9b12b992f216b3ed3c04bd404e77e5b690d601a27c71a7a2967d.exe

  • Size

    160KB

  • MD5

    69996b52ec0785a47c09fc8c8127c63c

  • SHA1

    4e3757f8193c5f7174bda0728cc8249f74405e57

  • SHA256

    e81dadfcfc8a9b12b992f216b3ed3c04bd404e77e5b690d601a27c71a7a2967d

  • SHA512

    f6b59e8fade9876e52a061256faf8e9bdd3cf15167101ade18b5b0351c3aff2a677b98f1fed85af3e6633483b154912cdc01345064a0f0cc697a0b93fdac6413

Score
10/10

Malware Config

Signatures

  • suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

    suricata: ET MALWARE [eSentire] Win32/GandCrab v4/5 Ransomware CnC Activity

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Enumerates connected drives 3 TTPs 24 IoCs

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

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Checks processor information in registry 2 TTPs 3 IoCs

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

  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 43 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e81dadfcfc8a9b12b992f216b3ed3c04bd404e77e5b690d601a27c71a7a2967d.exe
    "C:\Users\Admin\AppData\Local\Temp\e81dadfcfc8a9b12b992f216b3ed3c04bd404e77e5b690d601a27c71a7a2967d.exe"
    1⤵
    • Enumerates connected drives
    • Sets desktop wallpaper using registry
    • Checks processor information in registry
    • Modifies system certificate store
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1880
    • C:\Windows\SysWOW64\wbem\wmic.exe
      "C:\Windows\system32\wbem\wmic.exe" shadowcopy delete
      2⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:1100
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1336

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

1
T1107

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Discovery

Query Registry

2
T1012

Peripheral Device Discovery

1
T1120

System Information Discovery

3
T1082

Impact

Inhibit System Recovery

1
T1490

Defacement

1
T1491

Replay Monitor

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Downloads

  • memory/1880-54-0x0000000075AB1000-0x0000000075AB3000-memory.dmp
    Filesize

    8KB