Analysis

  • max time kernel
    61s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    05-11-2022 03:12

General

  • Target

    82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe

  • Size

    2.3MB

  • MD5

    a07c550bf41d3358ba86ff70f80d624b

  • SHA1

    4ef6c437af00e736326f9f2e4e422dd7debec302

  • SHA256

    82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b

  • SHA512

    4a704c343d8e8c08c2bed821fa9a2633016e8d042882fab65d401611e3c106a44f4e74d7cf75e71e62ad0f626480a3276b466781e2b586605c664600f141c94d

  • SSDEEP

    49152:tBOL9opVzUEyENMCnh9V0TS8VAoAod49MMCR8lmHaavmEAkjnPCBaxL9x8/F:rORMVzUEyEd2TSy4rYFHJllmL

Score
8/10

Malware Config

Signatures

  • Downloads MZ/PE file
  • Executes dropped EXE 1 IoCs
  • UPX packed file 5 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Loads dropped DLL 4 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe
    "C:\Users\Admin\AppData\Local\Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe"
    1⤵
    • Loads dropped DLL
    • Enumerates connected drives
    • Modifies system certificate store
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:1128
    • C:\Users\Admin\AppData\Local\Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe
      C:\Users\Admin\AppData\Local\Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe --type=crashpad-handler /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports" "--crash-count-file=C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\crash_count.txt" --url=https://crashstats-collector.opera.com/collector/submit --annotation=channel=Stable --annotation=plat=Win32 --annotation=prod=OperaDesktop --annotation=ver=62.0.3331.66 --initial-client-data=0x108,0x110,0x114,0x10c,0x118,0x74ff4570,0x74ff4580,0x74ff458c
      2⤵
      • Loads dropped DLL
      PID:1160
    • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe
      "C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe" --version
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      PID:884

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\Opera Installer Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe

    Filesize

    2.3MB

    MD5

    a07c550bf41d3358ba86ff70f80d624b

    SHA1

    4ef6c437af00e736326f9f2e4e422dd7debec302

    SHA256

    82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b

    SHA512

    4a704c343d8e8c08c2bed821fa9a2633016e8d042882fab65d401611e3c106a44f4e74d7cf75e71e62ad0f626480a3276b466781e2b586605c664600f141c94d

  • C:\Users\Admin\AppData\Roaming\Opera Software\Opera Stable\Crash Reports\settings.dat

    Filesize

    40B

    MD5

    25dd62b385058c6bc1678419861d4de8

    SHA1

    dd62c4cc5eafa8dd3f40dc6fc25e013a378e65ba

    SHA256

    94323661f3a7a78df0b3d3a8aa33e385592c46c3da9915e22680d3f111d7b296

    SHA512

    4d84e7c87213c3514d4595079dfff7a68a80afa1caf562d94ec5217947d941b7600e325162d5128e906cfed014962881ac2bf7156f4c3f36962d80157cb4efe7

  • \Users\Admin\AppData\Local\Temp\Opera Installer Temp\82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b.exe

    Filesize

    2.3MB

    MD5

    a07c550bf41d3358ba86ff70f80d624b

    SHA1

    4ef6c437af00e736326f9f2e4e422dd7debec302

    SHA256

    82437c31365618d3082b82929d13386ab6241fb6441cb2ae10ce6d3a9a92de8b

    SHA512

    4a704c343d8e8c08c2bed821fa9a2633016e8d042882fab65d401611e3c106a44f4e74d7cf75e71e62ad0f626480a3276b466781e2b586605c664600f141c94d

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2211050312175581128.dll

    Filesize

    3.2MB

    MD5

    347ab88f98b8e0fccaa24d2c35f145b8

    SHA1

    06a6f2661f308ffa39f48f2b0b54d52170d68ce0

    SHA256

    50221eec4498f617369611d95850ef959bea23a0e5c39d8238dfa836e05b503d

    SHA512

    f6fbe940792a684c5873592694e45f3ef9f767e6c09d23c9579798e782a6418a837306c7d26d1735ae4de54682396508bb90028917f81cd560601651923c2733

  • \Users\Admin\AppData\Local\Temp\Opera_installer_2211050312180271160.dll

    Filesize

    3.2MB

    MD5

    347ab88f98b8e0fccaa24d2c35f145b8

    SHA1

    06a6f2661f308ffa39f48f2b0b54d52170d68ce0

    SHA256

    50221eec4498f617369611d95850ef959bea23a0e5c39d8238dfa836e05b503d

    SHA512

    f6fbe940792a684c5873592694e45f3ef9f767e6c09d23c9579798e782a6418a837306c7d26d1735ae4de54682396508bb90028917f81cd560601651923c2733

  • \Users\Admin\AppData\Local\Temp\Opera_installer_221105031218554884.dll

    Filesize

    3.2MB

    MD5

    347ab88f98b8e0fccaa24d2c35f145b8

    SHA1

    06a6f2661f308ffa39f48f2b0b54d52170d68ce0

    SHA256

    50221eec4498f617369611d95850ef959bea23a0e5c39d8238dfa836e05b503d

    SHA512

    f6fbe940792a684c5873592694e45f3ef9f767e6c09d23c9579798e782a6418a837306c7d26d1735ae4de54682396508bb90028917f81cd560601651923c2733

  • memory/884-61-0x0000000000000000-mapping.dmp

  • memory/884-65-0x00000000009E0000-0x0000000000E2F000-memory.dmp

    Filesize

    4.3MB

  • memory/1128-55-0x00000000762E1000-0x00000000762E3000-memory.dmp

    Filesize

    8KB

  • memory/1128-66-0x0000000001180000-0x00000000015CF000-memory.dmp

    Filesize

    4.3MB

  • memory/1128-67-0x00000000029D0000-0x0000000002E1F000-memory.dmp

    Filesize

    4.3MB

  • memory/1128-69-0x00000000034F0000-0x000000000393F000-memory.dmp

    Filesize

    4.3MB

  • memory/1160-56-0x0000000000000000-mapping.dmp

  • memory/1160-68-0x0000000001180000-0x00000000015CF000-memory.dmp

    Filesize

    4.3MB