Resubmissions

30-12-2023 23:11

231230-26gg1scea6 10

22-12-2023 04:42

231222-fbzjfsebbr 10

Analysis

  • max time kernel
    141s
  • max time network
    118s
  • platform
    windows7_x64
  • resource
    win7-20231129-en
  • resource tags

    arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
  • submitted
    22-12-2023 04:42

General

  • Target

    Jigsaw2-b.exe

  • Size

    249KB

  • MD5

    33862bca1fe73d44277e9ad4f0aa81e1

  • SHA1

    e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

  • SHA256

    053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

  • SHA512

    08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

  • SSDEEP

    6144:VFVg9EpWQxCKDgqLSV2hIq45K4O4xDL1UnhvHNJ7h0W93MPNdLM7G:/VgGD4KNWViIq4pOOPipHlzsQ7

Malware Config

Signatures

  • Jigsaw Ransomware

    Ransomware family first created in 2016. Named based on wallpaper set after infection in the early versions.

  • Renames multiple (2140) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

  • Executes dropped EXE 1 IoCs
  • 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.

  • UPX packed file 7 IoCs

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

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
    "C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2872
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw2-b.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2784

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files\Java\jdk1.7.0_80\jre\lib\images\cursors\invalid32x32.gif.zemblax

    Filesize

    160B

    MD5

    000e8c41d4a15fb34d0be0dbb56e3778

    SHA1

    00c4eae64ee6239d7c65d819c6ce1ac329224f8c

    SHA256

    8bdfa6a5b7de345cf0d4fe0e9c17d8b0e9db26d58b05b1b2ebbb3a05a068ff28

    SHA512

    775d832eb8ab73e4a93789917dca69edb6c91fbb426e02acf7c6e213ffb4575776187209d1c471fbf57c4621ea3c23d9850f6dfc2770d62c17de9d66710800af

  • C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\epl-v10.html.zemblax

    Filesize

    12KB

    MD5

    bd42ba47ff97fd7e395c90f79e0f9508

    SHA1

    c2d8069ff6d72f3c63eeeac23933e5620f649d9d

    SHA256

    3ad6f0a5c15cd3e24aa59e9687649e0d8d8b85789f3feef68e22b61a34a183e5

    SHA512

    4eb6b58c46225f6e96bf41177892131384507cd8437e314426b797797c10960db52b84abd1fbf3cd845d1ed4bb8c67d2be3099a9ff5379a04d059b0557ef7fca

  • C:\Program Files\Java\jdk1.7.0_80\lib\missioncontrol\features\org.eclipse.ecf.filetransfer.httpclient4.feature_3.9.1.v20140827-1444\license.html.zemblax

    Filesize

    8KB

    MD5

    29c6678d44aa7966ae163d70dd9f3661

    SHA1

    04e2608b9497905befec2c9c74931cdd14c754e8

    SHA256

    f7634f4769d57b1fd7ff257cafd60a0b309194e610202dfd26fc5113d0abf834

    SHA512

    e80a6a0270d20e255f84ee6ef285b610b79731058f88272b8246e4f0c97222cebf2113d7ae70a1a145c0bec2a94fea5cb5abff0203a8be64c634a9b9b6a3b1b6

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

    Filesize

    46KB

    MD5

    5e6912b50cb5cc6d5a59c7c18aed9ce3

    SHA1

    e2dce479bf3ffa9bf2f6b797d2aa2d5faf566fd8

    SHA256

    2c7ca41beeade43340f6a4df5dcec8d4589fa1743f5f8278d3257f7ffaff980c

    SHA512

    82b9e2d27ee8f04af2cd679f4db9e5fedf5b8b423b496497d4e100b4eac5e3519acaf1469d70e67fb11b64bf822080d61c04242c504ba50c7d5f1b73ec44dcb6

  • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe

    Filesize

    39KB

    MD5

    903333e867e98f6d11bfdedc37f51494

    SHA1

    6c2a6cf9bc52c2683a4b86f9b7c448b577ead1ed

    SHA256

    eede8fa0d9e5618db36e673979632aadd853b6e4f3589baa0de00e33abbdc8e1

    SHA512

    942eb382a42f84e619bbae6ce233f41fd65ba34b58d8d75a6014cdb29392d80b01ef418b5087d7e06f027724de33829cc92c0b380e7bbaeb05bc28e9c927b56a

  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Cookies\container.dat.zemblax

    Filesize

    16B

    MD5

    cfdae8214d34112dbee6587664059558

    SHA1

    f649f45d08c46572a9a50476478ddaef7e964353

    SHA256

    33088cb514406f31e3d96a92c03294121ee9f24e176f7062625c2b36bee7a325

    SHA512

    c260f2c223ecbf233051ac1d6a1548ad188a2777085e9d43b02da41b291ff258e4c506f99636150847aa24918c7bbb703652fef2fe55b3f50f85b5bd8dd5f6e3

  • \Users\Admin\AppData\Local\Drpbx\drpbx.exe

    Filesize

    25KB

    MD5

    8bc8faa21d7e8376472e4776539f57e1

    SHA1

    221fee06317a6c4982244dbf30ef7bba06552aeb

    SHA256

    ed3bfdbb148275c7ba18bc8f57d1604d5ccee997bd814d9168e1b5e84ee59f78

    SHA512

    893e18a7ba6b2e3e4e79bdeef65096cba40cbab3c71c23066ebb7966666ad973914b9c8edc269d6bb0634a335c0eb7ed1fc0320325985883bd36bf19442c45ef

  • memory/2784-181-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-171-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2784-176-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2784-172-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-182-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-185-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2784-179-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-2506-0x0000000006460000-0x0000000006560000-memory.dmp

    Filesize

    1024KB

  • memory/2784-339-0x00000000020A0000-0x00000000020A1000-memory.dmp

    Filesize

    4KB

  • memory/2784-2498-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-635-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-340-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-2505-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-2499-0x0000000006460000-0x0000000006560000-memory.dmp

    Filesize

    1024KB

  • memory/2784-588-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2784-583-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2784-584-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-585-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-586-0x00000000020D0000-0x0000000002110000-memory.dmp

    Filesize

    256KB

  • memory/2784-582-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2872-37-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-7-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-47-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-45-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-43-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-41-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-39-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-0-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2872-35-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-33-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-31-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-29-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-27-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-25-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-23-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-21-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-19-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-17-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-15-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-11-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-9-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-49-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-5-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-4-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-2-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2872-51-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-53-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-55-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-57-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-59-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-61-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-63-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-170-0x0000000004FC0000-0x0000000005014000-memory.dmp

    Filesize

    336KB

  • memory/2872-178-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB

  • memory/2872-175-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2872-65-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-162-0x0000000002140000-0x0000000002141000-memory.dmp

    Filesize

    4KB

  • memory/2872-67-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-13-0x0000000002010000-0x0000000002044000-memory.dmp

    Filesize

    208KB

  • memory/2872-3-0x0000000001FA0000-0x0000000001FE0000-memory.dmp

    Filesize

    256KB

  • memory/2872-1-0x0000000074F60000-0x000000007550B000-memory.dmp

    Filesize

    5.7MB