Analysis

  • max time kernel
    308s
  • max time network
    358s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10-12-2022 23:59

General

  • Target

    306e86d6c586c3a6a52ed61b426b1e2520671b95b54510fb3faede2f499801d0.exe

  • Size

    535KB

  • MD5

    5c6d494467d89ff50a77cc878c8c9539

  • SHA1

    11618f354cc30d7a5716a687b9384138a0f46b5b

  • SHA256

    306e86d6c586c3a6a52ed61b426b1e2520671b95b54510fb3faede2f499801d0

  • SHA512

    6ed42edf100c076f422231c55e5df1ca9d1dda8c139fe7a19748f97685469c2a3042b9b23d222ea26c68a216c596b5084d4dc16238382cc7c3d0bad9e82c9394

  • SSDEEP

    6144:/kw+0xk6e96C2U/2aqg9JBP/gr0TdFpyI7a5SQ/GBQDLJCoF7PdcUFauRugGcSnu:slzAKpgCb7kSQKQXJ7tF34gNV

Malware Config

Extracted

Family

formbook

Campaign

m9ae

Decoy

nWTQpX6TYm6dfT3Lcw==

7JaBLgMm8EKn2AlTy5Ksj4Jq

yWRJIhE3viQgqEpZS3o=

ES9dFo0bytF8vlvRcg==

aX/aBZn29pD+cg==

lU64sYOZV7ZVpUy1ag==

9BpOCYAPv8L8TyIFAiTp2PSqLg==

uEJ2RyQ1BcBXfFr8kT5Z1KV0

oVM42Ury9pD+cg==

0Zl3VkcuKaY+

OjZeGI8dw67Z6eWtnOoBfoI=

ytwFn9j4i+N8nKYRSgcfh3xn5LU=

xMb1+YkOyxmbxJ53JsP7Pg==

HODQpzTBS1gVoi4X0hStKQ==

fQ417ycwD+ziKt1u0hStKQ==

nsApOqE62sA8uS735uCXVP+YcrQ=

4aobG3oZ3AHqTPs=

P2LEwJatZbQZUTayTW0=

/bopO7NR6clCfT3Lcw==

bBxRRkFY01R+20pZS3o=

Signatures

  • Formbook

    Formbook is a data stealing malware which is capable of stealing data.

  • Executes dropped EXE 2 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious behavior: MapViewOfSection 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 10 IoCs

Processes

  • C:\Windows\Explorer.EXE
    C:\Windows\Explorer.EXE
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:792
    • C:\Users\Admin\AppData\Local\Temp\306e86d6c586c3a6a52ed61b426b1e2520671b95b54510fb3faede2f499801d0.exe
      "C:\Users\Admin\AppData\Local\Temp\306e86d6c586c3a6a52ed61b426b1e2520671b95b54510fb3faede2f499801d0.exe"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4524
      • C:\Users\Admin\AppData\Local\Temp\tqlhmoflq.exe
        "C:\Users\Admin\AppData\Local\Temp\tqlhmoflq.exe" C:\Users\Admin\AppData\Local\Temp\pmxskx.hap
        3⤵
        • Executes dropped EXE
        • Adds Run key to start application
        • Suspicious use of SetThreadContext
        • Suspicious behavior: MapViewOfSection
        • Suspicious use of WriteProcessMemory
        PID:312
        • C:\Users\Admin\AppData\Local\Temp\tqlhmoflq.exe
          "C:\Users\Admin\AppData\Local\Temp\tqlhmoflq.exe"
          4⤵
          • Executes dropped EXE
          • Checks computer location settings
          • Suspicious use of SetThreadContext
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious behavior: MapViewOfSection
          • Suspicious use of AdjustPrivilegeToken
          PID:3384
    • C:\Windows\SysWOW64\help.exe
      "C:\Windows\SysWOW64\help.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of AdjustPrivilegeToken
      PID:2972

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\glolpx.d
    Filesize

    185KB

    MD5

    8da1a70786ac6e4f3dfb388eb1fd8afc

    SHA1

    5ba11c38ed1053aeaac158dff30a803a4d4410a8

    SHA256

    63eb014dd1a10b91067357e5692397ab1464bf3b146ba9baf199fe48ec5ac7c6

    SHA512

    b57314d2bd94d93b635f8c14aa67259915153b2aa238c1445e5d5b00a5cd6cd7dc250ea9ac499169ee85c99c9cf4e3e6bce986cfaa97c865afd2d6813d5efffc

  • C:\Users\Admin\AppData\Local\Temp\pmxskx.hap
    Filesize

    7KB

    MD5

    418b6039126a6cbb2921062ad20f4647

    SHA1

    505d64913e58eedfdbe0adc5d88385d36f3470fd

    SHA256

    6c069ae01b50d2553e568d274dbcb015f9ec95f3ef25283a7182f6c532cf9435

    SHA512

    4cf5e5e57d0352231bddf83b3f335d6ca359cb48480fb974dfe0133eba8171a5745fa65e22b8cbdfcaafc6e77ac366ee0d71aea7bcc27682ae67bcf9434cadeb

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

    287KB

    MD5

    b1710f487cd6c24bd3eaa637f90198ab

    SHA1

    0c9b0b875ffc7497a25236c50dd17e676c8aa098

    SHA256

    443c686a4a3eae981c5dce9b6f56ec291aec1bc52fce378fca7f67c4723e9cb0

    SHA512

    26b38d31b5e4ca4dc84749428cb443669547a5e0300479aa83c6ca4072aaef34fca3bf3d53b86a6b01268d378a62432cdd2c22b90fcb16473803d6fc48eeb3c9

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

    287KB

    MD5

    b1710f487cd6c24bd3eaa637f90198ab

    SHA1

    0c9b0b875ffc7497a25236c50dd17e676c8aa098

    SHA256

    443c686a4a3eae981c5dce9b6f56ec291aec1bc52fce378fca7f67c4723e9cb0

    SHA512

    26b38d31b5e4ca4dc84749428cb443669547a5e0300479aa83c6ca4072aaef34fca3bf3d53b86a6b01268d378a62432cdd2c22b90fcb16473803d6fc48eeb3c9

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

    287KB

    MD5

    b1710f487cd6c24bd3eaa637f90198ab

    SHA1

    0c9b0b875ffc7497a25236c50dd17e676c8aa098

    SHA256

    443c686a4a3eae981c5dce9b6f56ec291aec1bc52fce378fca7f67c4723e9cb0

    SHA512

    26b38d31b5e4ca4dc84749428cb443669547a5e0300479aa83c6ca4072aaef34fca3bf3d53b86a6b01268d378a62432cdd2c22b90fcb16473803d6fc48eeb3c9

  • memory/312-132-0x0000000000000000-mapping.dmp
  • memory/792-144-0x00000000085C0000-0x0000000008748000-memory.dmp
    Filesize

    1.5MB

  • memory/2972-145-0x0000000000000000-mapping.dmp
  • memory/2972-146-0x0000000000D00000-0x000000000104A000-memory.dmp
    Filesize

    3.3MB

  • memory/2972-147-0x0000000000CF0000-0x0000000000CF7000-memory.dmp
    Filesize

    28KB

  • memory/2972-148-0x00000000004B0000-0x00000000004DD000-memory.dmp
    Filesize

    180KB

  • memory/3384-139-0x0000000000400000-0x000000000042F000-memory.dmp
    Filesize

    188KB

  • memory/3384-140-0x0000000000401000-0x000000000042F000-memory.dmp
    Filesize

    184KB

  • memory/3384-141-0x00000000011E0000-0x000000000152A000-memory.dmp
    Filesize

    3.3MB

  • memory/3384-142-0x0000000000422000-0x0000000000424000-memory.dmp
    Filesize

    8KB

  • memory/3384-143-0x00000000007F0000-0x0000000000800000-memory.dmp
    Filesize

    64KB

  • memory/3384-137-0x0000000000000000-mapping.dmp