Analysis

  • max time kernel
    335s
  • max time network
    614s
  • platform
    windows10_x64
  • resource
    win10-en-20210920
  • submitted
    20-10-2021 15:54

General

  • Target

    JN4r2iahE9sIaCL.exe

  • Size

    701KB

  • MD5

    3a88f3cc4d324980561894168eea795f

  • SHA1

    36ccc893199587ee6ebe7642ace1257c4873ed2b

  • SHA256

    586fea3f49450c26e13546dd5c6f5c04744a3f807511ad587bceab7acc58c40c

  • SHA512

    96161cd4847d52afa8edc9cae70d93dbc1c1a797b6948c6b75fb6796858a70dd3d89e516ee25b7f0c8122bbfc705264284f85a19c3d355a3ec58a29c3ad75b4e

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.hoteltalabart.cat
  • Port:
    587
  • Username:
    [email protected]
  • Password:
    Jackdaniels_1

Signatures

  • AgentTesla

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

  • AgentTesla Payload 3 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.

  • Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JN4r2iahE9sIaCL.exe
    "C:\Users\Admin\AppData\Local\Temp\JN4r2iahE9sIaCL.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Users\Admin\AppData\Local\Temp\JN4r2iahE9sIaCL.exe
      "{path}"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3340

Network

MITRE ATT&CK Matrix ATT&CK v6

Credential Access

Credentials in Files

3
T1081

Collection

Data from Local System

3
T1005

Email Collection

1
T1114

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\JN4r2iahE9sIaCL.exe.log
    MD5

    90acfd72f14a512712b1a7380c0faf60

    SHA1

    40ba4accb8faa75887e84fb8e38d598dc8cf0f12

    SHA256

    20806822f0c130b340504132c1461b589261fbbc518e468f4f90733ab514cb86

    SHA512

    29dbf85e14e60868574cb4dc9bda83d3c229fb956733d8d2557f2475ee0e690ac9c2e72f31e02284996da6906ba2dbfa382a29b04c15a2406571d8ee19ad16b9

  • memory/2668-120-0x0000000004DC0000-0x0000000004DC1000-memory.dmp
    Filesize

    4KB

  • memory/2668-125-0x0000000006C30000-0x0000000006C68000-memory.dmp
    Filesize

    224KB

  • memory/2668-119-0x0000000004EF0000-0x0000000004EF1000-memory.dmp
    Filesize

    4KB

  • memory/2668-115-0x00000000004E0000-0x00000000004E1000-memory.dmp
    Filesize

    4KB

  • memory/2668-121-0x00000000050B0000-0x00000000050B1000-memory.dmp
    Filesize

    4KB

  • memory/2668-122-0x0000000002930000-0x0000000002931000-memory.dmp
    Filesize

    4KB

  • memory/2668-118-0x00000000053F0000-0x00000000053F1000-memory.dmp
    Filesize

    4KB

  • memory/2668-124-0x0000000006A60000-0x0000000006ADE000-memory.dmp
    Filesize

    504KB

  • memory/2668-123-0x00000000051D0000-0x00000000051DE000-memory.dmp
    Filesize

    56KB

  • memory/2668-117-0x0000000004E50000-0x0000000004E51000-memory.dmp
    Filesize

    4KB

  • memory/3340-127-0x000000000043750E-mapping.dmp
  • memory/3340-126-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/3340-133-0x0000000004ED0000-0x00000000053CE000-memory.dmp
    Filesize

    5.0MB

  • memory/3340-134-0x0000000005050000-0x0000000005051000-memory.dmp
    Filesize

    4KB

  • memory/3340-135-0x0000000005B30000-0x0000000005B31000-memory.dmp
    Filesize

    4KB