Analysis

  • max time kernel
    91s
  • max time network
    119s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    27-07-2021 13:54

General

  • Target

    payment advise.exe

  • Size

    927KB

  • MD5

    be85265738633fe3cd59f95bab85bddb

  • SHA1

    73b701dafe47b4da709a349dfe24ac87a08abfe7

  • SHA256

    7729f33528cbe1b6f4c4f5e695798b1561a2c2c615a88cfbc495254dd93ab81a

  • SHA512

    f0c748030685272fda45d161226c2680a402c0776e902129e384f4ab7e76348af8e003f876dc090066ade26324a2d150f2ee9989ae2b3df6f2cd636d7762ab94

Malware Config

Extracted

Family

agenttesla

Credentials

  • Protocol:
    smtp
  • Host:
    us2.smtp.mailhostbox.com
  • Port:
    587
  • Username:
    paola.micheli@copangroup.xyz
  • Password:
    gibson.1990

Signatures

  • AgentTesla

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

  • AgentTesla Payload 2 IoCs
  • Drops file in Drivers directory 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 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\payment advise.exe
    "C:\Users\Admin\AppData\Local\Temp\payment advise.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3380
    • C:\Users\Admin\AppData\Local\Temp\payment advise.exe
      "C:\Users\Admin\AppData\Local\Temp\payment advise.exe"
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4020

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\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\payment advise.exe.log
    MD5

    cd6a7ef88aaff4e17c603a213131c2c7

    SHA1

    603f96001fc4798064b35e699a46da82849c1422

    SHA256

    8aac4ffc0fc50f238b81ebd0514d2fdc8b577b09c544e233d8ec6158b12d1d21

    SHA512

    08bbd52c32b5ef9a58c2d0857b3f56fccab9502bd38133f01e1579c48b267f29486941547477d1dbfbbb9155ddc9ec703a5fc5de5ad60a31f60103f3fec5efaf

  • memory/3380-123-0x0000000004F40000-0x0000000004F4F000-memory.dmp
    Filesize

    60KB

  • memory/3380-116-0x0000000004C70000-0x0000000004C71000-memory.dmp
    Filesize

    4KB

  • memory/3380-118-0x0000000004D50000-0x0000000004DB8000-memory.dmp
    Filesize

    416KB

  • memory/3380-119-0x00000000052C0000-0x00000000052C1000-memory.dmp
    Filesize

    4KB

  • memory/3380-120-0x0000000004BF0000-0x0000000004C66000-memory.dmp
    Filesize

    472KB

  • memory/3380-121-0x0000000004EA0000-0x0000000004EA1000-memory.dmp
    Filesize

    4KB

  • memory/3380-117-0x0000000004C50000-0x0000000004C51000-memory.dmp
    Filesize

    4KB

  • memory/3380-114-0x00000000003D0000-0x00000000003D1000-memory.dmp
    Filesize

    4KB

  • memory/3380-122-0x0000000004FE0000-0x0000000004FE1000-memory.dmp
    Filesize

    4KB

  • memory/4020-125-0x000000000043760E-mapping.dmp
  • memory/4020-124-0x0000000000400000-0x000000000043C000-memory.dmp
    Filesize

    240KB

  • memory/4020-131-0x0000000004FC0000-0x0000000004FC1000-memory.dmp
    Filesize

    4KB

  • memory/4020-132-0x0000000005110000-0x0000000005111000-memory.dmp
    Filesize

    4KB

  • memory/4020-133-0x0000000005C90000-0x0000000005C91000-memory.dmp
    Filesize

    4KB

  • memory/4020-135-0x0000000005170000-0x0000000005171000-memory.dmp
    Filesize

    4KB