Resubmissions

30-12-2023 23:12

231230-264bsaafeq 10

22-12-2023 04:42

231222-fbzt8agbb3 10

Analysis

  • max time kernel
    118s
  • max time network
    119s
  • 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.exe

  • Size

    291KB

  • MD5

    2fec9bf50de5395f799b23a1099b10d6

  • SHA1

    6000969e75d7d7a3fa1b908bdb9d5daeb5f2534e

  • SHA256

    df049efbfa7ac0b76c8daff5d792c550c7a7a24f6e9e887d01a01013c9caa763

  • SHA512

    5f6885fb1940ee4f84507e2b7929f637d8f264a5c77329aeae31803b772608ea93370177017f90f6f8d8bc9e0b30eb8607ed120d4ead68104fd70feec71a9ab8

  • SSDEEP

    6144:pdSK04ETTZ+4TBpvjLCnVlBpevKBauJirVuD05VSKJ:poL4EnU4T/vjLeVlayRihuA5D

Malware Config

Signatures

  • Jigsaw Ransomware

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

  • Renames multiple (2130) 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.

  • 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.exe
    "C:\Users\Admin\AppData\Local\Temp\Jigsaw2.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2240
    • C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe
      "C:\Users\Admin\AppData\Local\Drpbx\drpbx.exe" C:\Users\Admin\AppData\Local\Temp\Jigsaw2.exe
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • Suspicious use of AdjustPrivilegeToken
      PID:2812

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

    68KB

    MD5

    1779ff9869de2310eb7a40783953d859

    SHA1

    cfad1930cbff44325b9e62c287caa48e343d9a21

    SHA256

    b4a968700165415cff16b1816f97c648df7e87cefbb1bde4aa74e626d095a2ac

    SHA512

    50ed8b26a320ce7169c3649a4682ec2ec53f3063de3aa1b9502bda18bfb2d652be624de334eeeb102579c55d1396b1a1132bd0ce8fadfdfea784a71fe6f482c4

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

    Filesize

    97KB

    MD5

    bf0449c6c8afac80584d467f188e83a5

    SHA1

    290f9723665d1d700aa9bd9a37729198f0d6f642

    SHA256

    30a327c07d744f9790602e71e94cf62c95e7dc94ebbd5d5c9e619f54b74c69b5

    SHA512

    9c05eb3efe88754c42d4e94f6bae744c3e08ca5fc758d44ecf7d771af4d38b8efafd0ec42e52d5960cfe9e21d20008a1135831b64a80aaf398f4599f6ab69752

  • 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

    103KB

    MD5

    809677d81b6ef211181cdff94914f2cd

    SHA1

    9d16de3bf5d7ddb5c81e2b05582694632b9fb582

    SHA256

    8ad83f2fe94d807c9ba3ed717fcbb5c38506f7c3ee853c0c1a2190effff31686

    SHA512

    dc46f349715e4b9f8fa5f3ac64620e02030e73faf388eaa99b42238e0886d1b92988f1541414c59d95af2a47728e67d0a115d3bc1428c23e87bdb3aebdff75a2

  • memory/2240-4-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-39-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-31-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-0-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2240-29-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-170-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2240-3-0x0000000002140000-0x0000000002180000-memory.dmp

    Filesize

    256KB

  • memory/2240-2-0x0000000002140000-0x0000000002180000-memory.dmp

    Filesize

    256KB

  • memory/2240-21-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-1-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2240-65-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-67-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-5-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-61-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-59-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-57-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-55-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-53-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-51-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-49-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-47-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-45-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-43-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-41-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-27-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-37-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-35-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-33-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-162-0x0000000001E80000-0x0000000001E81000-memory.dmp

    Filesize

    4KB

  • memory/2240-7-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-63-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-25-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-23-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-19-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-17-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-15-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-13-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-11-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2240-9-0x0000000002040000-0x0000000002074000-memory.dmp

    Filesize

    208KB

  • memory/2812-2481-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-568-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-172-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-336-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-566-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-570-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-565-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2812-2485-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-181-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-335-0x00000000021A0000-0x00000000021A1000-memory.dmp

    Filesize

    4KB

  • memory/2812-179-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-576-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-177-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB

  • memory/2812-175-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2812-171-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2812-2482-0x00000000063A0000-0x00000000064A0000-memory.dmp

    Filesize

    1024KB

  • memory/2812-567-0x0000000074210000-0x00000000747BB000-memory.dmp

    Filesize

    5.7MB

  • memory/2812-2486-0x00000000063A0000-0x00000000064A0000-memory.dmp

    Filesize

    1024KB

  • memory/2812-569-0x0000000002020000-0x0000000002060000-memory.dmp

    Filesize

    256KB