Analysis

  • max time kernel
    179s
  • max time network
    189s
  • platform
    windows7_x64
  • resource
    win7-20230831-en
  • resource tags

    arch:x64arch:x86image:win7-20230831-enlocale:en-usos:windows7-x64system
  • submitted
    11-10-2023 08:15

General

  • Target

    New-Client.exe

  • Size

    25KB

  • MD5

    cdfc36ba42665419295b0c68dde39430

  • SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

  • SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

  • SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • SSDEEP

    384:CB+Sbj6NKwSs6/DAH92Xyh34EnWb5j4kDhlzCTJEUmNYEYQro3lch1Fnsjr:4pwP6/Dw9FaE+RHtN8i1ej

Score
10/10

Malware Config

Extracted

Family

limerat

Attributes
  • aes_key

    adlan

  • antivm

    false

  • c2_url

    https://pastebin.com/raw/EsJXyyQv

  • delay

    3

  • download_payload

    false

  • install

    true

  • install_name

    Svchost.exe

  • main_folder

    AppData

  • pin_spread

    true

  • sub_folder

    \Schost\

  • usb_spread

    true

Extracted

Family

limerat

Attributes
  • antivm

    false

  • c2_url

    https://pastebin.com/raw/EsJXyyQv

  • download_payload

    false

  • install

    false

  • pin_spread

    false

  • usb_spread

    false

Signatures

  • LimeRAT

    Simple yet powerful RAT for Windows machines written in .NET.

  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\New-Client.exe
    "C:\Users\Admin\AppData\Local\Temp\New-Client.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1612
    • C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc ONLOGON /RL HIGHEST /tn LimeRAT-Admin /tr "'C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe'"
      2⤵
      • Creates scheduled task(s)
      PID:2504
    • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe
      "C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      PID:2832

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\Cab3D9F.tmp

    Filesize

    61KB

    MD5

    f3441b8572aae8801c04f3060b550443

    SHA1

    4ef0a35436125d6821831ef36c28ffaf196cda15

    SHA256

    6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

    SHA512

    5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

  • C:\Users\Admin\AppData\Local\Temp\Tar3E00.tmp

    Filesize

    163KB

    MD5

    9441737383d21192400eca82fda910ec

    SHA1

    725e0d606a4fc9ba44aa8ffde65bed15e65367e4

    SHA256

    bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

    SHA512

    7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • C:\Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • \Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • \Users\Admin\AppData\Roaming\Schost\Svchost.exe

    Filesize

    25KB

    MD5

    cdfc36ba42665419295b0c68dde39430

    SHA1

    6b577e002d35133a846ef05fe03b5b250c37e8d4

    SHA256

    f55871df9e8ca3a99a34e3b3345fed1daaf371f77b7c0a668a5f34b60fc0ce35

    SHA512

    6f25cce90d2a0e3bc97db1c8b090c0c6602eb6393c8096ae1774bc1d8bf02e380ed72690917a2eea25f8cdcd5b41ca7d0939720deffec4ef935609d44de01454

  • memory/1612-0-0x0000000000E50000-0x0000000000E5C000-memory.dmp

    Filesize

    48KB

  • memory/1612-15-0x00000000749F0000-0x00000000750DE000-memory.dmp

    Filesize

    6.9MB

  • memory/1612-3-0x00000000001F0000-0x0000000000230000-memory.dmp

    Filesize

    256KB

  • memory/1612-1-0x00000000749F0000-0x00000000750DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2832-13-0x0000000000D30000-0x0000000000D3C000-memory.dmp

    Filesize

    48KB

  • memory/2832-14-0x00000000749F0000-0x00000000750DE000-memory.dmp

    Filesize

    6.9MB

  • memory/2832-16-0x0000000004BF0000-0x0000000004C30000-memory.dmp

    Filesize

    256KB

  • memory/2832-17-0x00000000749F0000-0x00000000750DE000-memory.dmp

    Filesize

    6.9MB