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Analysis

  • max time kernel
    134s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240802-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
  • submitted
    29/08/2024, 05:17

General

  • Target

    SMT-SMTLEE.exe

  • Size

    695KB

  • MD5

    d86d32a91cd4fbf6b7ef7ee1593333d5

  • SHA1

    de006ba907db6b0cdc0b1ffd5ce0dc34575da3f5

  • SHA256

    04b2fa83d9f55ff2b689a6f8541cd7529c7c1166bda9be8cc46d5014f41fa1e1

  • SHA512

    70d0e8dcebbf6e77280c7b1ccd060386f0e25ec6da58044c32c0d5e9d8ce741bcf7a5bf64cd6af4da2a4498c7a5b88f515f0e90551276eedccb206be76481ded

  • SSDEEP

    12288:iVVGEHMe5DzoyMhBf8O/rDtTvLrBVJLvFs0YVQQyoGeKc5g/:0GLe5D6PVdBxsRxyorKcq

Malware Config

Extracted

Family

vipkeylogger

Credentials

Signatures

  • VIPKeylogger

    VIPKeylogger is a keylogger and infostealer written in C# and it resembles SnakeKeylogger that was found in 2020.

  • Credentials from Password Stores: Credentials from Web Browsers 1 TTPs

    Malicious Access or copy of Web Browser Credential store.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • 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 1 IoCs

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

  • Suspicious use of SetThreadContext 1 IoCs
  • Browser Information Discovery 1 TTPs

    Enumerate browser information.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 6 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\SMT-SMTLEE.exe
    "C:\Users\Admin\AppData\Local\Temp\SMT-SMTLEE.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:5076
    • 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\SMT-SMTLEE.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:1344
    • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vXJvDpCf.exe"
      2⤵
      • Command and Scripting Interpreter: PowerShell
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:3620
    • C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vXJvDpCf" /XML "C:\Users\Admin\AppData\Local\Temp\tmpA4BC.tmp"
      2⤵
      • System Location Discovery: System Language Discovery
      • Scheduled Task/Job: Scheduled Task
      PID:2920
    • C:\Users\Admin\AppData\Local\Temp\SMT-SMTLEE.exe
      "C:\Users\Admin\AppData\Local\Temp\SMT-SMTLEE.exe"
      2⤵
      • Accesses Microsoft Outlook profiles
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • outlook_office_path
      • outlook_win_path
      PID:3448

Network

MITRE ATT&CK Enterprise v15

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

    a3059f545e84f63ace5ba64098e09dae

    SHA1

    699210728b1d46dd1dc62acbe0e5c92733e0cbb9

    SHA256

    a6f519875211444356df4fa6caa386dcab6e5f253c8267843a5679e87ccaf4c1

    SHA512

    7bd788bd99ae458172f1ac542de56ce6989c0ab6a642882a95d3645f81ade45acf96d8b7be5177fce241be1afb95a46be523618a70af6b169bb2b0b8d594482e

  • C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pgs1zfsu.yzg.ps1

    Filesize

    60B

    MD5

    d17fe0a3f47be24a6453e9ef58c94641

    SHA1

    6ab83620379fc69f80c0242105ddffd7d98d5d9d

    SHA256

    96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

    SHA512

    5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

  • C:\Users\Admin\AppData\Local\Temp\tmpA4BC.tmp

    Filesize

    1KB

    MD5

    9024ab6c96f496e265da0aa85a8b80d1

    SHA1

    bb4c33981ae0584131ce3052af746d637d5242b7

    SHA256

    f6c07f94f0e6ee8254e400f1e2f05d558ee444a3bcbf229d971bee04d846f160

    SHA512

    01f57e3652c183e1a5f85f6f5029870be03451f87b3d1ffd77959723bd2e9c8ae24eeebac1216ec6f29c2ccd10ca0886f1de7c1f8607adcca3721b26f4ce1220

  • memory/1344-32-0x0000000005B90000-0x0000000005EE4000-memory.dmp

    Filesize

    3.3MB

  • memory/1344-18-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/1344-24-0x0000000005110000-0x0000000005132000-memory.dmp

    Filesize

    136KB

  • memory/1344-58-0x000000006F900000-0x000000006F94C000-memory.dmp

    Filesize

    304KB

  • memory/1344-89-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/1344-81-0x0000000007850000-0x000000000786A000-memory.dmp

    Filesize

    104KB

  • memory/1344-80-0x0000000007750000-0x0000000007764000-memory.dmp

    Filesize

    80KB

  • memory/1344-16-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/1344-15-0x0000000004C30000-0x0000000004C66000-memory.dmp

    Filesize

    216KB

  • memory/1344-25-0x00000000051B0000-0x0000000005216000-memory.dmp

    Filesize

    408KB

  • memory/1344-17-0x00000000052E0000-0x0000000005908000-memory.dmp

    Filesize

    6.2MB

  • memory/1344-19-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/1344-78-0x0000000007710000-0x0000000007721000-memory.dmp

    Filesize

    68KB

  • memory/1344-77-0x0000000007790000-0x0000000007826000-memory.dmp

    Filesize

    600KB

  • memory/1344-76-0x0000000007580000-0x000000000758A000-memory.dmp

    Filesize

    40KB

  • memory/1344-74-0x0000000007B60000-0x00000000081DA000-memory.dmp

    Filesize

    6.5MB

  • memory/1344-26-0x0000000005220000-0x0000000005286000-memory.dmp

    Filesize

    408KB

  • memory/3448-46-0x0000000000400000-0x0000000000448000-memory.dmp

    Filesize

    288KB

  • memory/3448-90-0x0000000006AF0000-0x0000000006CB2000-memory.dmp

    Filesize

    1.8MB

  • memory/3448-91-0x0000000006970000-0x00000000069C0000-memory.dmp

    Filesize

    320KB

  • memory/3620-20-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/3620-48-0x0000000006560000-0x000000000657E000-memory.dmp

    Filesize

    120KB

  • memory/3620-88-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/3620-82-0x0000000007BE0000-0x0000000007BE8000-memory.dmp

    Filesize

    32KB

  • memory/3620-21-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/3620-52-0x000000006F900000-0x000000006F94C000-memory.dmp

    Filesize

    304KB

  • memory/3620-79-0x0000000007AF0000-0x0000000007AFE000-memory.dmp

    Filesize

    56KB

  • memory/3620-72-0x0000000007760000-0x000000000777E000-memory.dmp

    Filesize

    120KB

  • memory/3620-51-0x0000000007520000-0x0000000007552000-memory.dmp

    Filesize

    200KB

  • memory/3620-73-0x0000000007780000-0x0000000007823000-memory.dmp

    Filesize

    652KB

  • memory/3620-50-0x0000000006B10000-0x0000000006B5C000-memory.dmp

    Filesize

    304KB

  • memory/3620-75-0x00000000078C0000-0x00000000078DA000-memory.dmp

    Filesize

    104KB

  • memory/3620-22-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/5076-0-0x00000000749BE000-0x00000000749BF000-memory.dmp

    Filesize

    4KB

  • memory/5076-49-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/5076-3-0x0000000005640000-0x00000000056D2000-memory.dmp

    Filesize

    584KB

  • memory/5076-10-0x000000000A8C0000-0x000000000A95C000-memory.dmp

    Filesize

    624KB

  • memory/5076-9-0x0000000006880000-0x000000000690C000-memory.dmp

    Filesize

    560KB

  • memory/5076-4-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/5076-2-0x0000000005D40000-0x00000000062E4000-memory.dmp

    Filesize

    5.6MB

  • memory/5076-1-0x0000000000B60000-0x0000000000C12000-memory.dmp

    Filesize

    712KB

  • memory/5076-8-0x00000000749B0000-0x0000000075160000-memory.dmp

    Filesize

    7.7MB

  • memory/5076-5-0x0000000005710000-0x000000000571A000-memory.dmp

    Filesize

    40KB

  • memory/5076-7-0x00000000749BE000-0x00000000749BF000-memory.dmp

    Filesize

    4KB

  • memory/5076-6-0x0000000005D20000-0x0000000005D38000-memory.dmp

    Filesize

    96KB