Analysis

  • max time kernel
    149s
  • max time network
    110s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    20-04-2021 14:26

General

  • Target

    apr.20.Product.Sample.exe

  • Size

    914KB

  • MD5

    54be59d38b7cd8b17b2a61dc223b9ba4

  • SHA1

    9f53e465983fef1d75c125f02f561eb367ffc7c3

  • SHA256

    00e029505f08409c263a00c64d9afb68ce25af2c87ce9aff7b8533b965294215

  • SHA512

    77f8f867d4a19be4c9a4ecfa26ac9baa67621d7217017164bf11f61635bd0363bb450d71f70b050223c89419ce001c9f77d0aa183dfd9899861abf179d1236c7

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    ftp
  • Host:
    ftp://199.188.200.93/
  • Port:
    21
  • Username:
    oralogvj
  • Password:
    BNHColCvgMdA

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 IoCs
  • Drops file in Drivers directory 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Creates scheduled task(s) 1 TTPs 1 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\apr.20.Product.Sample.exe
    "C:\Users\Admin\AppData\Local\Temp\apr.20.Product.Sample.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4024
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\zUTKSKQC" /XML "C:\Users\Admin\AppData\Local\Temp\tmpB8F0.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:3288
    • C:\Users\Admin\AppData\Local\Temp\apr.20.Product.Sample.exe
      "C:\Users\Admin\AppData\Local\Temp\apr.20.Product.Sample.exe"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2336

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\apr.20.Product.Sample.exe.log

    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • C:\Users\Admin\AppData\Local\Temp\tmpB8F0.tmp

    MD5

    4bab0484837ee5705a96a1730433134c

    SHA1

    b5a44446b0a79ad335ac3440d8322755544b53ba

    SHA256

    23d7e4adbf348389a69ccb2a8d9109716236bf073ba7fd7c66d2dfdf9a79b0c8

    SHA512

    c52c4637b9a6caff05c1c8d3e7525df455483d0491c5766470ec5759e0929494875306cb9d4dd3e8351a36efe76fc44d23a0c01887dbe657ce92f7ab4ee78de6

  • memory/2336-137-0x0000000006330000-0x0000000006331000-memory.dmp

    Filesize

    4KB

  • memory/2336-136-0x0000000005710000-0x0000000005711000-memory.dmp

    Filesize

    4KB

  • memory/2336-135-0x0000000005640000-0x0000000005B3E000-memory.dmp

    Filesize

    5.0MB

  • memory/2336-129-0x000000000043772E-mapping.dmp

  • memory/2336-128-0x0000000000400000-0x000000000043C000-memory.dmp

    Filesize

    240KB

  • memory/3288-126-0x0000000000000000-mapping.dmp

  • memory/4024-119-0x0000000005320000-0x000000000581E000-memory.dmp

    Filesize

    5.0MB

  • memory/4024-124-0x0000000006250000-0x00000000062D2000-memory.dmp

    Filesize

    520KB

  • memory/4024-125-0x00000000012F0000-0x000000000133A000-memory.dmp

    Filesize

    296KB

  • memory/4024-123-0x000000007F5F0000-0x000000007F5F1000-memory.dmp

    Filesize

    4KB

  • memory/4024-122-0x0000000005810000-0x0000000005819000-memory.dmp

    Filesize

    36KB

  • memory/4024-121-0x0000000005500000-0x0000000005501000-memory.dmp

    Filesize

    4KB

  • memory/4024-120-0x00000000052A0000-0x00000000052A1000-memory.dmp

    Filesize

    4KB

  • memory/4024-114-0x0000000000900000-0x0000000000901000-memory.dmp

    Filesize

    4KB

  • memory/4024-118-0x0000000005320000-0x0000000005321000-memory.dmp

    Filesize

    4KB

  • memory/4024-117-0x0000000005820000-0x0000000005821000-memory.dmp

    Filesize

    4KB

  • memory/4024-116-0x00000000051C0000-0x00000000051C1000-memory.dmp

    Filesize

    4KB