Analysis

  • max time kernel
    102s
  • max time network
    33s
  • platform
    windows7_x64
  • resource
    win7-20221111-en
  • resource tags

    arch:x64arch:x86image:win7-20221111-enlocale:en-usos:windows7-x64system
  • submitted
    06-02-2023 23:46

General

  • Target

    ccbcacb9d7c41706508c6518b5976d043b1d41624deb5ce5049eb1a6eb8192e3.xls

  • Size

    1.8MB

  • MD5

    b7b547d017f9576698b464f93997b0ee

  • SHA1

    0ae98a894517fb36cce84d023a7922cbec81ffad

  • SHA256

    ccbcacb9d7c41706508c6518b5976d043b1d41624deb5ce5049eb1a6eb8192e3

  • SHA512

    b21f77fbd5c51b5f3763310dd693ab9be46bb958955179dc8b4ec3bbaba6357f44171b6ce041c4ba2814077d66d4e798febd1fb5de6a9d69b7b9a10ff1578474

  • SSDEEP

    49152:oLK7B9ghkuJ1ae9a9guJ1E5aKjTbcobCl+nGiKQLdlz:YaShkwPYiwudjUjd1QHz

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    mail.sfivegroupe.com
  • Port:
    587
  • Username:
    malika.baraitame@sfivegroupe.com
  • Password:
    S8YVh~75ZPC

Signatures

  • Blocklisted process makes network request 1 IoCs
  • Downloads MZ/PE file
  • Executes dropped EXE 3 IoCs
  • Loads dropped DLL 3 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Uses the VBS compiler for execution 1 TTPs
  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Looks up external IP address via web service 2 IoCs

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

  • Suspicious use of SetThreadContext 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 2 IoCs

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

  • Enumerates system info in registry 2 TTPs 1 IoCs
  • Launches Equation Editor 1 TTPs 1 IoCs

    Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.

  • Modifies Internet Explorer settings 1 TTPs 31 IoCs
  • Modifies registry class 64 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
    "C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\ccbcacb9d7c41706508c6518b5976d043b1d41624deb5ce5049eb1a6eb8192e3.xls
    1⤵
    • Enumerates system info in registry
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious behavior: AddClipboardFormatListener
    • Suspicious use of SetWindowsHookEx
    PID:788
  • C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
    "C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
    1⤵
    • Blocklisted process makes network request
    • Loads dropped DLL
    • Launches Equation Editor
    • Suspicious use of WriteProcessMemory
    PID:588
    • C:\Users\Public\vbc.exe
      "C:\Users\Public\vbc.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1556
      • C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe
        "C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe" C:\Users\Admin\AppData\Local\Temp\cmyazvuhq.w
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:1632
        • C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe
          "C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe"
          4⤵
          • Executes dropped EXE
          • Accesses Microsoft Outlook profiles
          • Checks processor information in registry
          • Modifies system certificate store
          • Suspicious use of AdjustPrivilegeToken
          • outlook_office_path
          • outlook_win_path
          PID:1420

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scripting

1
T1064

Exploitation for Client Execution

1
T1203

Defense Evasion

Scripting

1
T1064

Modify Registry

2
T1112

Install Root Certificate

1
T1130

Credential Access

Credentials in Files

1
T1081

Discovery

System Information Discovery

3
T1082

Query Registry

2
T1012

Collection

Data from Local System

1
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\cmyazvuhq.w
    Filesize

    5KB

    MD5

    886475870aadd06d227dad2ab920e3f6

    SHA1

    2d2a36afb40e043714963d313731b9801beb3582

    SHA256

    c1a8e247d34c7beda6b2edf7425695f780ff1b4fb120e49bbd30c0e2fbeb0b53

    SHA512

    0c9a7455c59fb903859d9589c91ea03169e0f8fdeea0fb35c300be079bd3f7078454a34d2d8f0021124b6c24e69f1b5292657207c34f10e11d3b6d8c93674ad4

  • C:\Users\Admin\AppData\Local\Temp\kaihnoick.jqp
    Filesize

    927KB

    MD5

    dd6ab7bdea637e9961a5c03d6026856b

    SHA1

    c237fce8ed1ceb3fa5915f04a2b1dc2057fa3df4

    SHA256

    4685578e84cdbd72104f9dbb8579ce3d51eb2e38bf531dc202b96c44112b6892

    SHA512

    637122b83c9c25d352ab203f0589617dcb97f5e074f510b6a03a7eb6c5cdeed392cc06f51120e84565b96c45a345201ff1839d94c9a2f8070ca34b629d938d54

  • C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe
    Filesize

    361KB

    MD5

    c6799ec0078575c02586212352fbf727

    SHA1

    a7f3fdfe687d2b0be5197af95c97a193de99becd

    SHA256

    2cba2190f0d7a81bafcec0e424d3da078661122672988bbacf074f2e748520f8

    SHA512

    f2284eab3409cdbb49e5ea9e9c1d3b8b4c569f19f792cb86581444e4f912db4410a440f4805ad2058401c2f04f569fe1b68bdbfde01d3e233ed225b4fafb1771

  • C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe
    Filesize

    361KB

    MD5

    c6799ec0078575c02586212352fbf727

    SHA1

    a7f3fdfe687d2b0be5197af95c97a193de99becd

    SHA256

    2cba2190f0d7a81bafcec0e424d3da078661122672988bbacf074f2e748520f8

    SHA512

    f2284eab3409cdbb49e5ea9e9c1d3b8b4c569f19f792cb86581444e4f912db4410a440f4805ad2058401c2f04f569fe1b68bdbfde01d3e233ed225b4fafb1771

  • C:\Users\Admin\AppData\Local\Temp\qgpozxj.exe
    Filesize

    361KB

    MD5

    c6799ec0078575c02586212352fbf727

    SHA1

    a7f3fdfe687d2b0be5197af95c97a193de99becd

    SHA256

    2cba2190f0d7a81bafcec0e424d3da078661122672988bbacf074f2e748520f8

    SHA512

    f2284eab3409cdbb49e5ea9e9c1d3b8b4c569f19f792cb86581444e4f912db4410a440f4805ad2058401c2f04f569fe1b68bdbfde01d3e233ed225b4fafb1771

  • C:\Users\Public\vbc.exe
    Filesize

    1.0MB

    MD5

    fb0457ffba51067f65ebb83643604660

    SHA1

    41b1f79b5899de617cded8a6c44e5cdcce45db70

    SHA256

    62931fe87c3452571f8bc4470b8115e18395e95d4c60255614e5eb51fed8f7c9

    SHA512

    78eb66c15155f9ecea388392cf7fd91cd0d3e53226aca8652897fc6a28ec88482f2a4e1134d235eb804c1005927dc0deee685b2a179918b7cee5c6a418342a09

  • C:\Users\Public\vbc.exe
    Filesize

    1.0MB

    MD5

    fb0457ffba51067f65ebb83643604660

    SHA1

    41b1f79b5899de617cded8a6c44e5cdcce45db70

    SHA256

    62931fe87c3452571f8bc4470b8115e18395e95d4c60255614e5eb51fed8f7c9

    SHA512

    78eb66c15155f9ecea388392cf7fd91cd0d3e53226aca8652897fc6a28ec88482f2a4e1134d235eb804c1005927dc0deee685b2a179918b7cee5c6a418342a09

  • \Users\Admin\AppData\Local\Temp\qgpozxj.exe
    Filesize

    361KB

    MD5

    c6799ec0078575c02586212352fbf727

    SHA1

    a7f3fdfe687d2b0be5197af95c97a193de99becd

    SHA256

    2cba2190f0d7a81bafcec0e424d3da078661122672988bbacf074f2e748520f8

    SHA512

    f2284eab3409cdbb49e5ea9e9c1d3b8b4c569f19f792cb86581444e4f912db4410a440f4805ad2058401c2f04f569fe1b68bdbfde01d3e233ed225b4fafb1771

  • \Users\Admin\AppData\Local\Temp\qgpozxj.exe
    Filesize

    361KB

    MD5

    c6799ec0078575c02586212352fbf727

    SHA1

    a7f3fdfe687d2b0be5197af95c97a193de99becd

    SHA256

    2cba2190f0d7a81bafcec0e424d3da078661122672988bbacf074f2e748520f8

    SHA512

    f2284eab3409cdbb49e5ea9e9c1d3b8b4c569f19f792cb86581444e4f912db4410a440f4805ad2058401c2f04f569fe1b68bdbfde01d3e233ed225b4fafb1771

  • \Users\Public\vbc.exe
    Filesize

    1.0MB

    MD5

    fb0457ffba51067f65ebb83643604660

    SHA1

    41b1f79b5899de617cded8a6c44e5cdcce45db70

    SHA256

    62931fe87c3452571f8bc4470b8115e18395e95d4c60255614e5eb51fed8f7c9

    SHA512

    78eb66c15155f9ecea388392cf7fd91cd0d3e53226aca8652897fc6a28ec88482f2a4e1134d235eb804c1005927dc0deee685b2a179918b7cee5c6a418342a09

  • memory/788-77-0x000000007276D000-0x0000000072778000-memory.dmp
    Filesize

    44KB

  • memory/788-54-0x000000002F071000-0x000000002F074000-memory.dmp
    Filesize

    12KB

  • memory/788-82-0x000000007276D000-0x0000000072778000-memory.dmp
    Filesize

    44KB

  • memory/788-58-0x00000000763D1000-0x00000000763D3000-memory.dmp
    Filesize

    8KB

  • memory/788-57-0x000000007276D000-0x0000000072778000-memory.dmp
    Filesize

    44KB

  • memory/788-56-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/788-81-0x000000005FFF0000-0x0000000060000000-memory.dmp
    Filesize

    64KB

  • memory/788-55-0x0000000071781000-0x0000000071783000-memory.dmp
    Filesize

    8KB

  • memory/1420-75-0x0000000000400000-0x00000000004E7000-memory.dmp
    Filesize

    924KB

  • memory/1420-76-0x00000000048B0000-0x0000000004986000-memory.dmp
    Filesize

    856KB

  • memory/1420-78-0x0000000002180000-0x000000000218E000-memory.dmp
    Filesize

    56KB

  • memory/1420-79-0x0000000007FF0000-0x00000000080A2000-memory.dmp
    Filesize

    712KB

  • memory/1420-80-0x0000000000400000-0x00000000004E7000-memory.dmp
    Filesize

    924KB

  • memory/1420-72-0x0000000000401896-mapping.dmp
  • memory/1556-61-0x0000000000000000-mapping.dmp
  • memory/1632-66-0x0000000000000000-mapping.dmp