Overview

overview

10

Static

static

A4A6042237...96.exe

windows7_x64

10

A4A6042237...96.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    01-07-2022 22:32

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General

  • Target

    A4A60422374845BF0ABD892DD48D352978D697C883196.exe

  • Size

    701KB

  • MD5

    1bd98c5b4581aeff9b65ce5653f49cdf

  • SHA1

    3091d81da54ed79391b456e8e94e6b939be2a316

  • SHA256

    a4a60422374845bf0abd892dd48d352978d697c883196392e0d692f70f0e85c1

  • SHA512

    f1462a6d7cfc813cd2ba05d6ccac9656b76ef4ea7418992d1b3b1acdbd779d7b2ab016322f30264c123fea92114a481c1400dc965964731c86974b98922486cc

Score
10/10
suricata

Malware Config

Signatures

  • suricata: ET MALWARE Generic AsyncRAT Style SSL Cert

    suricata: ET MALWARE Generic AsyncRAT Style SSL Cert

    suricata
  • suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

    suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)

    suricata
  • Executes dropped EXE 1 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • 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.

    persistence
  • Delays execution with timeout.exe 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 23 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\A4A60422374845BF0ABD892DD48D352978D697C883196.exe
    "C:\Users\Admin\AppData\Local\Temp\A4A60422374845BF0ABD892DD48D352978D697C883196.exe"
    1⤵
    • Checks computer location settings
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1056
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn A4A60422374845BF0ABD892DD48D352978D697C883196 /tr '"C:\Users\Admin\AppData\Roaming\syastem.exe"' & exit
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:4216
      • C:\Windows\SysWOW64\schtasks.exe
        schtasks /create /f /sc onlogon /ru system /rl highest /tn A4A60422374845BF0ABD892DD48D352978D697C883196 /tr '"C:\Users\Admin\AppData\Roaming\syastem.exe"'
        3⤵
        • Creates scheduled task(s)
        PID:4176
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE3CD.tmp.bat""
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3000
      • C:\Windows\SysWOW64\timeout.exe
        timeout 3
        3⤵
        • Delays execution with timeout.exe
        PID:2904
      • C:\Users\Admin\AppData\Roaming\syastem.exe
        "C:\Users\Admin\AppData\Roaming\syastem.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of AdjustPrivilegeToken
        PID:2940

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Local\Temp\tmpE3CD.tmp.bat
    Filesize

    151B

    MD5

    cc4454051978efd3736d91594ec93bec

    SHA1

    f13de765d88822e6289320cb2ba0a63c17037ba9

    SHA256

    cbb5bc6aa8f22e8c73ed80727459b408381496aff86dcc9714d6739464360b52

    SHA512

    5c23ca42660f5e75bd1e7fdad38c962bdaeb0e57865ccbc208451b7acc4ed66916686030bae5b896732eebc2be52875ab730c0375640e77c42aa7746d85e7314

    Download Submit
  • C:\Users\Admin\AppData\Roaming\syastem.exe
    Filesize

    701KB

    MD5

    1bd98c5b4581aeff9b65ce5653f49cdf

    SHA1

    3091d81da54ed79391b456e8e94e6b939be2a316

    SHA256

    a4a60422374845bf0abd892dd48d352978d697c883196392e0d692f70f0e85c1

    SHA512

    f1462a6d7cfc813cd2ba05d6ccac9656b76ef4ea7418992d1b3b1acdbd779d7b2ab016322f30264c123fea92114a481c1400dc965964731c86974b98922486cc

    Download Submit
  • C:\Users\Admin\AppData\Roaming\syastem.exe
    Filesize

    701KB

    MD5

    1bd98c5b4581aeff9b65ce5653f49cdf

    SHA1

    3091d81da54ed79391b456e8e94e6b939be2a316

    SHA256

    a4a60422374845bf0abd892dd48d352978d697c883196392e0d692f70f0e85c1

    SHA512

    f1462a6d7cfc813cd2ba05d6ccac9656b76ef4ea7418992d1b3b1acdbd779d7b2ab016322f30264c123fea92114a481c1400dc965964731c86974b98922486cc

    Download Submit
  • memory/1056-131-0x0000000005080000-0x000000000511C000-memory.dmp
    Filesize

    624KB

    Download
  • memory/1056-132-0x0000000005770000-0x0000000005D14000-memory.dmp
    Filesize

    5.6MB

    Download
  • memory/1056-133-0x00000000051C0000-0x0000000005252000-memory.dmp
    Filesize

    584KB

    Download
  • memory/1056-130-0x0000000000610000-0x00000000006C4000-memory.dmp
    Filesize

    720KB

    Download
  • memory/2904-138-0x0000000000000000-mapping.dmp
    Download
  • memory/2940-139-0x0000000000000000-mapping.dmp
    Download
  • memory/2940-142-0x0000000005DC0000-0x0000000005E26000-memory.dmp
    Filesize

    408KB

    Download
  • memory/3000-135-0x0000000000000000-mapping.dmp
    Download
  • memory/4176-136-0x0000000000000000-mapping.dmp
    Download
  • memory/4216-134-0x0000000000000000-mapping.dmp
    Download