Resubmissions

08-10-2023 10:02

231008-l2z6kabb3z 10

08-10-2023 09:59

231008-l1b3cabb3s 10

27-09-2023 16:49

230927-vb39zadg59 10

Analysis

  • max time kernel
    597s
  • max time network
    364s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    08-10-2023 10:02

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.

  • 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 9 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:2208
    • 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:2000

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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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

    249KB

    MD5

    33862bca1fe73d44277e9ad4f0aa81e1

    SHA1

    e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

    SHA256

    053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

    SHA512

    08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

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

    Filesize

    249KB

    MD5

    33862bca1fe73d44277e9ad4f0aa81e1

    SHA1

    e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

    SHA256

    053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

    SHA512

    08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

  • 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

    249KB

    MD5

    33862bca1fe73d44277e9ad4f0aa81e1

    SHA1

    e900bf9dc2ad2b18e362c8d42ae8e8ce74fb3ff1

    SHA256

    053cec40ef1b8c148c4c1f798509e8b33e0f86f81555307b65e9fdffd670b9fa

    SHA512

    08c0ef71dcab39f772abf17b2c714bc89fe2add6fa61f734ea04c05770ad93a68e5fd9caf73d740c3c17dce1ebb0563b0bd82b20fc6a7e508a778bccbbf8384c

  • memory/2000-342-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-2425-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-361-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-2426-0x0000000006180000-0x0000000006280000-memory.dmp

    Filesize

    1024KB

  • memory/2000-341-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2000-340-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-339-0x0000000001F20000-0x0000000001F21000-memory.dmp

    Filesize

    4KB

  • memory/2000-184-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-181-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-180-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-178-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2000-2429-0x00000000021F0000-0x0000000002230000-memory.dmp

    Filesize

    256KB

  • memory/2000-2431-0x0000000006180000-0x0000000006280000-memory.dmp

    Filesize

    1024KB

  • memory/2208-25-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-31-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-37-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-41-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-45-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-49-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-55-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-57-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-61-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-65-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-69-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-67-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-63-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-59-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-53-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-51-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-47-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-43-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-39-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-164-0x0000000004720000-0x0000000004721000-memory.dmp

    Filesize

    4KB

  • memory/2208-33-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-35-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-29-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-172-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2208-175-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2208-27-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-0-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2208-23-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-21-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-177-0x0000000000400000-0x0000000000454000-memory.dmp

    Filesize

    336KB

  • memory/2208-174-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2208-19-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-17-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-15-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-13-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-11-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-9-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-7-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-6-0x0000000004540000-0x0000000004574000-memory.dmp

    Filesize

    208KB

  • memory/2208-5-0x0000000002030000-0x0000000002070000-memory.dmp

    Filesize

    256KB

  • memory/2208-4-0x0000000002030000-0x0000000002070000-memory.dmp

    Filesize

    256KB

  • memory/2208-3-0x0000000002030000-0x0000000002070000-memory.dmp

    Filesize

    256KB

  • memory/2208-2-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB

  • memory/2208-1-0x0000000074860000-0x0000000074E0B000-memory.dmp

    Filesize

    5.7MB