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Analysis

  • max time kernel
    149s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20230220-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20230220-enlocale:en-usos:windows10-2004-x64system
  • submitted
    15/03/2023, 16:57

General

  • Target

    100 gab.exe

  • Size

    1.2MB

  • MD5

    38462e84ce0cb6d961452e6b0e20c83c

  • SHA1

    86bf94777e67a820191cec9857182ff6d404539d

  • SHA256

    8cc7a30b218d8c4e4dbeef936290a726ebfdb9ea1b9af35dab970ce4bb5352bc

  • SHA512

    ce0c3020cdc5576d0437778db2e6521d77872a3d02c755430afdce41321c8489b2c80eff05beaa7bb8e63d3c4abc2298e3fdaca8bd2389027cf1cab4f3ec5820

  • SSDEEP

    24576:QqGnNerctUvpL0V5Uk86JsJPG8ODWfMMFR5UitDJ6Bz5d:lctOpaWo8aWfLF/f6Bz5d

Malware Config

Extracted

Family

agenttesla

C2

https://api.telegram.org/bot5693068931:AAGSQSNIWDJM1FzeZVNHS020I9wVBrQdkRM/

Signatures

  • AgentTesla

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

  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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
  • Looks up external IP address via web service 2 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • 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 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs
  • outlook_office_path 1 IoCs
  • outlook_win_path 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\100 gab.exe
    "C:\Users\Admin\AppData\Local\Temp\100 gab.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:1156
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\100 gab.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:116
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\daHysTSY.exe"
      2⤵
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:4372
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\daHysTSY" /XML "C:\Users\Admin\AppData\Local\Temp\tmp14FF.tmp"
      2⤵
      • Creates scheduled task(s)
      PID:992
    • C:\Users\Admin\AppData\Local\Temp\100 gab.exe
      "C:\Users\Admin\AppData\Local\Temp\100 gab.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:1380

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

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

    Filesize

    2KB

    MD5

    968cb9309758126772781b83adb8a28f

    SHA1

    8da30e71accf186b2ba11da1797cf67f8f78b47c

    SHA256

    92099c10776bb7e3f2a8d1b82d4d40d0c4627e4f1bf754a6e58dfd2c2e97042a

    SHA512

    4bd50732f8af4d688d95999bddfd296115d7033ddc38f86c9fb1f47fde202bffa27e9088bebcaa3064ca946af2f5c1ca6cbde49d0907f0005c7ab42874515dd3

  • C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

    Filesize

    18KB

    MD5

    232fec361a7b381d93b831354f0d7c5c

    SHA1

    f1656fa76be11f3499ad07cd631b0656099e8bac

    SHA256

    ff94957bb72c456f71850b13fcd8b22c73f3c20bea902c71648d22262143149d

    SHA512

    81e0ee4cc843058ff34dd41146614ae6bf7203bec8a08091bb381cd8a045a5a858e65772755ccc0311787269cef36f1393e0137bb7c46f99e692e6d162552b32

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_2tjyylzs.kzc.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmp14FF.tmp

    Filesize

    1KB

    MD5

    3d891d34a6484e905fa8a159b11fe878

    SHA1

    8896219334fa8f05e6f249092197dbcd40c20fbd

    SHA256

    f14e0d8c86cc3ab3758364a9ed370ab76fff08beaedc0d60eeb33e88da395597

    SHA512

    fcb94f8d3dd22e98941038fdf6ae451579f0a1af1beaaed1bfc0ff48aadf668f2d3d83cdb17816174a9487f0576617981ab0beb73b780d01726ace35a6168b1e

  • memory/116-202-0x0000000007AA0000-0x0000000007AAA000-memory.dmp

    Filesize

    40KB

  • memory/116-178-0x0000000007700000-0x0000000007732000-memory.dmp

    Filesize

    200KB

  • memory/116-180-0x0000000071560000-0x00000000715AC000-memory.dmp

    Filesize

    304KB

  • memory/116-144-0x0000000002E70000-0x0000000002EA6000-memory.dmp

    Filesize

    216KB

  • memory/116-145-0x0000000002DF0000-0x0000000002E00000-memory.dmp

    Filesize

    64KB

  • memory/116-146-0x00000000058D0000-0x0000000005EF8000-memory.dmp

    Filesize

    6.2MB

  • memory/116-201-0x0000000008070000-0x00000000086EA000-memory.dmp

    Filesize

    6.5MB

  • memory/116-176-0x0000000002DF0000-0x0000000002E00000-memory.dmp

    Filesize

    64KB

  • memory/116-149-0x0000000002DF0000-0x0000000002E00000-memory.dmp

    Filesize

    64KB

  • memory/116-174-0x0000000006730000-0x000000000674E000-memory.dmp

    Filesize

    120KB

  • memory/116-205-0x0000000007CB0000-0x0000000007D46000-memory.dmp

    Filesize

    600KB

  • memory/116-203-0x000000007F930000-0x000000007F940000-memory.dmp

    Filesize

    64KB

  • memory/116-152-0x0000000005810000-0x0000000005876000-memory.dmp

    Filesize

    408KB

  • memory/1156-135-0x0000000004C10000-0x0000000004CA2000-memory.dmp

    Filesize

    584KB

  • memory/1156-134-0x00000000050F0000-0x0000000005694000-memory.dmp

    Filesize

    5.6MB

  • memory/1156-138-0x0000000004C00000-0x0000000004C10000-memory.dmp

    Filesize

    64KB

  • memory/1156-133-0x0000000000050000-0x0000000000192000-memory.dmp

    Filesize

    1.3MB

  • memory/1156-136-0x0000000004C00000-0x0000000004C10000-memory.dmp

    Filesize

    64KB

  • memory/1156-137-0x0000000004B80000-0x0000000004B8A000-memory.dmp

    Filesize

    40KB

  • memory/1156-139-0x0000000008530000-0x00000000085CC000-memory.dmp

    Filesize

    624KB

  • memory/1380-175-0x00000000054F0000-0x0000000005500000-memory.dmp

    Filesize

    64KB

  • memory/1380-154-0x0000000000400000-0x0000000000430000-memory.dmp

    Filesize

    192KB

  • memory/1380-215-0x00000000054F0000-0x0000000005500000-memory.dmp

    Filesize

    64KB

  • memory/1380-214-0x0000000007110000-0x0000000007160000-memory.dmp

    Filesize

    320KB

  • memory/4372-204-0x000000007F8F0000-0x000000007F900000-memory.dmp

    Filesize

    64KB

  • memory/4372-177-0x00000000048C0000-0x00000000048D0000-memory.dmp

    Filesize

    64KB

  • memory/4372-153-0x0000000005610000-0x0000000005676000-memory.dmp

    Filesize

    408KB

  • memory/4372-179-0x0000000071560000-0x00000000715AC000-memory.dmp

    Filesize

    304KB

  • memory/4372-151-0x0000000004DC0000-0x0000000004DE2000-memory.dmp

    Filesize

    136KB

  • memory/4372-206-0x00000000071A0000-0x00000000071AE000-memory.dmp

    Filesize

    56KB

  • memory/4372-207-0x00000000072B0000-0x00000000072CA000-memory.dmp

    Filesize

    104KB

  • memory/4372-208-0x0000000007290000-0x0000000007298000-memory.dmp

    Filesize

    32KB

  • memory/4372-148-0x00000000048C0000-0x00000000048D0000-memory.dmp

    Filesize

    64KB

  • memory/4372-147-0x00000000048C0000-0x00000000048D0000-memory.dmp

    Filesize

    64KB

  • memory/4372-200-0x0000000006F70000-0x0000000006F8A000-memory.dmp

    Filesize

    104KB

  • memory/4372-190-0x0000000006180000-0x000000000619E000-memory.dmp

    Filesize

    120KB