Analysis

  • max time kernel
    120s
  • max time network
    146s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    10-05-2021 13:06

General

  • Target

    3ba367bb53bc5ad7c0e8d7f5a9d33532.exe

  • Size

    718KB

  • MD5

    3ba367bb53bc5ad7c0e8d7f5a9d33532

  • SHA1

    974c0e32a4480927f27daec1f65ce9bf23ff0e0a

  • SHA256

    33ea02b92678e7c73d8f65dc81d76733fe0ce94b9c9b22ebe216132a0986436f

  • SHA512

    c595d47918ca1a3facba0003cf1dd245e10aad78b190fe5715904c16fb13052e41a3a807da113ef46c7ea4688e01f7136b9ddeda0792398a5bc872a69628294e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://ftp.tractorandinas.com/
  • Port:
    21
  • Username:
    admin@tractorandinas.com
  • Password:
    ~P*xO7vPBc-o

Signatures

  • AgentTesla

    Agent Tesla is a remote access tool (RAT) written in visual basic.

  • .NET Reactor proctector 2 IoCs

    Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 1 IoCs
  • Reads data files stored by FTP clients 2 TTPs

    Tries to access configuration files associated with programs like FileZilla.

  • Reads user/profile data of local email clients 2 TTPs

    Email clients store some user data on disk where infostealers will often target it.

  • 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
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 23 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3ba367bb53bc5ad7c0e8d7f5a9d33532.exe
    "C:\Users\Admin\AppData\Local\Temp\3ba367bb53bc5ad7c0e8d7f5a9d33532.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:2116
    • C:\Users\Admin\AppData\Local\Temp\3ba367bb53bc5ad7c0e8d7f5a9d33532.exe
      C:\Users\Admin\AppData\Local\Temp\3ba367bb53bc5ad7c0e8d7f5a9d33532.exe
      2⤵
      • Drops file in Drivers directory
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3396
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Public\stt.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1856
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /K C:\Users\Public\PXOR.bat
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1168
        • C:\Windows \System32\Netplwiz.exe
          "C:\Windows \System32\Netplwiz.exe"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:1472
          • C:\Windows\system32\cmd.exe
            C:\Windows\system32\cmd.exe /c C:\Users\Public\Cdex.bat
            5⤵
            • Suspicious use of WriteProcessMemory
            PID:3784
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              powershell -WindowStyle Hidden -inputformat none -outputformat none -NonInteractive -Command "Add-MpPreference -ExclusionPath 'C:\Users'"
              6⤵
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:2908

Network

MITRE ATT&CK Matrix ATT&CK v6

Persistence

Registry Run Keys / Startup Folder

1
T1060

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Public\Cdex.bat
    MD5

    84de6cf0b720db43f85d95204a2c1902

    SHA1

    c87c4c1f3ad9f28968c46a89c4fff8bdb867b006

    SHA256

    bc4baad4a7983c54c1764b0aa57f12d536ce506253c82e06dd98e17bbb5f77ee

    SHA512

    5fd018b5f72797a64934f8f35d4510ef95c235442a807d476e7fd3c14eaa854c1a3092332edbdd1028f8954ab28acb5aab8720a74226cfcfab3cb3a7772a64b7

  • C:\Users\Public\NETUTILS.dll
    MD5

    39507d772c63ca496a25a14a8b5d14b2

    SHA1

    5b603f5c11eb9ab4313694315b4d4894ff4641d4

    SHA256

    36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

    SHA512

    0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

  • C:\Users\Public\Netplwiz.exe
    MD5

    f94b7fb6dac49844d03c7087b2d8b472

    SHA1

    0e84139fced0ee8ef929d0bd5f01559a7dcf1db0

    SHA256

    46e31f337ed0d9a6fe3f159abc91c9b9b6a6062982bbcd84a51784d7128e7ae4

    SHA512

    d63878f94f7699e4cc63c2cd885c29455e0c423d32dba750e4fc3aa74dbaca80a1a4b176719213b9fc6584de6a40cddff7864c7fb4cfba13dfcb437a36e41b80

  • C:\Users\Public\PXOR.bat
    MD5

    0d8aef656413642f55e0902cc5df5e6f

    SHA1

    73ec56d08bd9b3c45d55c97bd1c1286b77c8ff49

    SHA256

    670f94b92f45bc2f3f44a80c7f3021f874aa16fde38ed7d7f3ebed13ae09fa11

    SHA512

    efe690b1bcf06e16be469622b45c98b5dc1f1e06410cbf7e7dccb2975524c4d6bc7e23de9a129d50d73cd924f02e23f925555894f2c7da1064dcc57151f50876

  • C:\Users\Public\stt.bat
    MD5

    8a850253c31df9a7e1c00c80df2630d5

    SHA1

    e3da74081b027a3b591488b28da22742bcfe8495

    SHA256

    8fdeba3ec903bde700342083d16f72452366aa0b1b30d0e58dee0af74cebfa35

    SHA512

    30510bdc34680a0865a0811d9be29dec91c74717feccd58c9b4d88e77be9e5d13a539806a1b2901aff595b2fe2cc45926b69ed42e899d2dd2913c78a732e84d1

  • C:\Windows \System32\Netplwiz.exe
    MD5

    f94b7fb6dac49844d03c7087b2d8b472

    SHA1

    0e84139fced0ee8ef929d0bd5f01559a7dcf1db0

    SHA256

    46e31f337ed0d9a6fe3f159abc91c9b9b6a6062982bbcd84a51784d7128e7ae4

    SHA512

    d63878f94f7699e4cc63c2cd885c29455e0c423d32dba750e4fc3aa74dbaca80a1a4b176719213b9fc6584de6a40cddff7864c7fb4cfba13dfcb437a36e41b80

  • C:\Windows \System32\netutils.dll
    MD5

    39507d772c63ca496a25a14a8b5d14b2

    SHA1

    5b603f5c11eb9ab4313694315b4d4894ff4641d4

    SHA256

    36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

    SHA512

    0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

  • \Windows \System32\NETUTILS.dll
    MD5

    39507d772c63ca496a25a14a8b5d14b2

    SHA1

    5b603f5c11eb9ab4313694315b4d4894ff4641d4

    SHA256

    36d1fa474cd8271f9b74b9481025614b6ff309f767f69d9f1ff3960c7205ad12

    SHA512

    0c740fd7b6d67d9938b0d8e1ea7d6c41910dd6d0b85b4ec8b6015ff8c0c73798dee01f01da0b5b0c07038663aca7945faca0e2b5afc1cb751aaba7567d332f5f

  • memory/1168-119-0x0000000000000000-mapping.dmp
  • memory/1472-124-0x0000000000000000-mapping.dmp
  • memory/1856-117-0x0000000000000000-mapping.dmp
  • memory/2116-114-0x0000000002300000-0x0000000002301000-memory.dmp
    Filesize

    4KB

  • memory/2908-152-0x0000028445E80000-0x0000028445E82000-memory.dmp
    Filesize

    8KB

  • memory/2908-153-0x0000028445E83000-0x0000028445E85000-memory.dmp
    Filesize

    8KB

  • memory/2908-154-0x0000028445E86000-0x0000028445E88000-memory.dmp
    Filesize

    8KB

  • memory/2908-148-0x0000028448340000-0x0000028448341000-memory.dmp
    Filesize

    4KB

  • memory/2908-143-0x0000028447F90000-0x0000028447F91000-memory.dmp
    Filesize

    4KB

  • memory/2908-136-0x0000000000000000-mapping.dmp
  • memory/3396-121-0x00000000024D0000-0x000000000251D000-memory.dmp
    Filesize

    308KB

  • memory/3396-116-0x000000000040CD2F-mapping.dmp
  • memory/3396-131-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/3396-135-0x0000000004B83000-0x0000000004B84000-memory.dmp
    Filesize

    4KB

  • memory/3396-133-0x0000000004B80000-0x0000000004B81000-memory.dmp
    Filesize

    4KB

  • memory/3396-137-0x0000000005090000-0x0000000005091000-memory.dmp
    Filesize

    4KB

  • memory/3396-130-0x00000000049E0000-0x0000000004A2C000-memory.dmp
    Filesize

    304KB

  • memory/3396-181-0x0000000005970000-0x0000000005971000-memory.dmp
    Filesize

    4KB

  • memory/3396-151-0x0000000004B84000-0x0000000004B86000-memory.dmp
    Filesize

    8KB

  • memory/3396-126-0x0000000004B90000-0x0000000004B91000-memory.dmp
    Filesize

    4KB

  • memory/3396-134-0x0000000004B82000-0x0000000004B83000-memory.dmp
    Filesize

    4KB

  • memory/3396-115-0x0000000000400000-0x0000000000449000-memory.dmp
    Filesize

    292KB

  • memory/3396-178-0x0000000005670000-0x0000000005671000-memory.dmp
    Filesize

    4KB

  • memory/3396-179-0x00000000056B0000-0x00000000056B1000-memory.dmp
    Filesize

    4KB

  • memory/3396-180-0x0000000005C20000-0x0000000005C21000-memory.dmp
    Filesize

    4KB

  • memory/3784-129-0x0000000000000000-mapping.dmp