Analysis

  • max time kernel
    127s
  • max time network
    130s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    25-01-2021 14:18

General

  • Target

    DHL Details.exe

  • Size

    1.1MB

  • MD5

    41b6de13a1a77f13859e7507cb7801d1

  • SHA1

    169255531a255c357293c87401f9da42d58f15a0

  • SHA256

    d395cb074c93aac76ff1dc501e202c61a86e062896593cb75161d3747d2577e9

  • SHA512

    c4976e9894e6e6e16ad400c48e80675c426db77db91a21339a4a806f0afbf16b65a942c3346752269c817f8bc9afc4c99eddcb4173a7c02814876afcfeaa24e0

Malware Config

Extracted

Credentials

  • Protocol:
    smtp
  • Host:
    server126.web-hosting.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    TB@h;x2zl*5c

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    server126.web-hosting.com
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    TB@h;x2zl*5c

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 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.

  • 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\DHL Details.exe
    "C:\Users\Admin\AppData\Local\Temp\DHL Details.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:988
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qKIXouo" /XML "C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:2652
    • C:\Users\Admin\AppData\Local\Temp\DHL Details.exe
      "C:\Users\Admin\AppData\Local\Temp\DHL Details.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:2000

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\DHL Details.exe.log

    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • C:\Users\Admin\AppData\Local\Temp\tmp496E.tmp

    MD5

    4d98caba94964dbfc1eb51773ee5a906

    SHA1

    a324bdf50ccb160f33468cecce951eb31c06cd16

    SHA256

    8b342d4d2629bfeb4d068938769185110b6b415d28d3bfd2fbb65092061e780f

    SHA512

    d9dc6412c8c0cd27a24fd010cc88723039e2517dbed0757383b3ef9a2cfd5faf9fa7e86f183435a0021eb598075c4fd3fe708c3b72093a801e9da3cfd8874ef7

  • memory/988-3-0x0000000000F50000-0x0000000000F51000-memory.dmp

    Filesize

    4KB

  • memory/988-5-0x00000000058A0000-0x00000000058A1000-memory.dmp

    Filesize

    4KB

  • memory/988-6-0x0000000005E40000-0x0000000005E41000-memory.dmp

    Filesize

    4KB

  • memory/988-7-0x00000000059E0000-0x00000000059E1000-memory.dmp

    Filesize

    4KB

  • memory/988-8-0x0000000005890000-0x0000000005891000-memory.dmp

    Filesize

    4KB

  • memory/988-9-0x0000000005B40000-0x0000000005B41000-memory.dmp

    Filesize

    4KB

  • memory/988-10-0x0000000005BA0000-0x0000000005BC3000-memory.dmp

    Filesize

    140KB

  • memory/988-11-0x0000000005BD0000-0x0000000005BD1000-memory.dmp

    Filesize

    4KB

  • memory/988-12-0x0000000006710000-0x00000000067AE000-memory.dmp

    Filesize

    632KB

  • memory/988-2-0x0000000073310000-0x00000000739FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2000-18-0x0000000073310000-0x00000000739FE000-memory.dmp

    Filesize

    6.9MB

  • memory/2000-16-0x00000000004610EE-mapping.dmp

  • memory/2000-15-0x0000000000400000-0x0000000000466000-memory.dmp

    Filesize

    408KB

  • memory/2000-23-0x00000000051A0000-0x00000000051A1000-memory.dmp

    Filesize

    4KB

  • memory/2000-24-0x0000000004F40000-0x0000000004F41000-memory.dmp

    Filesize

    4KB

  • memory/2000-25-0x0000000005650000-0x0000000005651000-memory.dmp

    Filesize

    4KB

  • memory/2000-28-0x0000000004F41000-0x0000000004F42000-memory.dmp

    Filesize

    4KB

  • memory/2652-13-0x0000000000000000-mapping.dmp