Analysis

  • max time kernel
    146s
  • max time network
    135s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    27-07-2021 14:45

General

  • Target

    Order#732B9_130321 Pdf.exe

  • Size

    938KB

  • MD5

    193cd9e42d452e3523d04654c0ca883f

  • SHA1

    e13557a7ea1c29e4376187eccc9d000290cfb32c

  • SHA256

    d3eb7e966bf389f4139c625dea6d218f0969440101629a0e11302d0e547dee85

  • SHA512

    05425c70d5c785de3f89022f73862f6e568f3b054732ff16d69594268d8417bbdae8cdf0eb6cc98d29177662a2f6e98693f2d8891b9c2ccecda6b147e7e84c92

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    smtp.zoho.com
  • Port:
    587
  • Username:
    steinlogz@zohomail.com
  • Password:
    JesusChrist007

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.

  • 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 3 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Order#732B9_130321 Pdf.exe
    "C:\Users\Admin\AppData\Local\Temp\Order#732B9_130321 Pdf.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:808
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\GntgGQe" /XML "C:\Users\Admin\AppData\Local\Temp\tmp7446.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:1876
    • C:\Users\Admin\AppData\Local\Temp\Order#732B9_130321 Pdf.exe
      "C:\Users\Admin\AppData\Local\Temp\Order#732B9_130321 Pdf.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2200

Network

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Credential Access

Credentials in Files

3
T1081

Discovery

System Information Discovery

1
T1082

Collection

Data from Local System

3
T1005

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Order#732B9_130321 Pdf.exe.log
    MD5

    0c2899d7c6746f42d5bbe088c777f94c

    SHA1

    622f66c5f7a3c91b28a9f43ce7c6cabadbf514f1

    SHA256

    5b0b99740cadaeff7b9891136644b396941547e20cc7eea646560d0dad5a5458

    SHA512

    ab7a3409ed4b6ca00358330a3aa4ef6de7d81eb21a5e24bb629ef6a7c7c4e2a70ca3accfbc989ed6e495fdb8eb6203a26d6f2a37b2a5809af4276af375b49078

  • C:\Users\Admin\AppData\Local\Temp\tmp7446.tmp
    MD5

    5874df68b2fbdc1fca899103576cb3c4

    SHA1

    46c63a299faa5835bde3349d85552459d7e19345

    SHA256

    5b1d5965cfe80d2db47b55575a564576dfb662b8cd976c35b586e4d8e692bd02

    SHA512

    a5994378fb470aa5fcf425f67ed2433eae843228023e2603836d014af2657b4ef3052baf66541770ddb788c48b814916a5a16dad594fe083efa89201b719cc2f

  • memory/808-123-0x0000000008790000-0x00000000087CC000-memory.dmp
    Filesize

    240KB

  • memory/808-116-0x00000000055D0000-0x00000000055D1000-memory.dmp
    Filesize

    4KB

  • memory/808-119-0x00000000050D0000-0x00000000055CE000-memory.dmp
    Filesize

    4MB

  • memory/808-120-0x0000000005290000-0x0000000005291000-memory.dmp
    Filesize

    4KB

  • memory/808-121-0x00000000055A0000-0x00000000055BB000-memory.dmp
    Filesize

    108KB

  • memory/808-122-0x0000000008700000-0x0000000008781000-memory.dmp
    Filesize

    516KB

  • memory/808-114-0x00000000006B0000-0x00000000006B1000-memory.dmp
    Filesize

    4KB

  • memory/808-118-0x0000000002A70000-0x0000000002A71000-memory.dmp
    Filesize

    4KB

  • memory/808-117-0x00000000050D0000-0x00000000050D1000-memory.dmp
    Filesize

    4KB

  • memory/1876-124-0x0000000000000000-mapping.dmp
  • memory/2200-127-0x00000000004375DE-mapping.dmp
  • memory/2200-126-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/2200-133-0x0000000004D80000-0x000000000527E000-memory.dmp
    Filesize

    4MB

  • memory/2200-134-0x00000000051F0000-0x00000000051F1000-memory.dmp
    Filesize

    4KB

  • memory/2200-135-0x0000000005AE0000-0x0000000005AE1000-memory.dmp
    Filesize

    4KB