Analysis

  • max time kernel
    110s
  • max time network
    133s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 19:36

General

  • Target

    f30562f12f6ef79b34b52f506780e01a.exe

  • Size

    697KB

  • MD5

    f30562f12f6ef79b34b52f506780e01a

  • SHA1

    a70a54548bec648b92253ac5ac998e92ef3dabd9

  • SHA256

    341847d9c11face1487ab04072d6ddc5065a379011c6684e56e1f4fa8d8ab3f3

  • SHA512

    ad7739d8c8d0de69ebd20c41cb9c7739d6cd4f388bb928e228149a8bd454f510d9b0cc379ae56a478855fea665d2cbc031256c09d4ce7a2fbaa7eeed3fc445b6

Malware Config

Signatures

  • Vidar

    Vidar is an infostealer based on Arkei stealer.

  • Executes dropped EXE 1 IoCs
  • 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 2FA software files, possible credential harvesting 2 TTPs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Legitimate hosting services abused for malware hosting/C2 1 TTPs
  • Looks up external IP address via web service 1 IoCs

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

  • Drops file in Program Files directory 3 IoCs
  • Drops file in Windows directory 2 IoCs
  • Checks processor information in registry 2 TTPs 2 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies Control Panel 1 IoCs
  • Modifies Internet Explorer settings 1 TTPs 3 IoCs
  • Modifies registry class 163 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 9 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 6 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\f30562f12f6ef79b34b52f506780e01a.exe
    "C:\Users\Admin\AppData\Local\Temp\f30562f12f6ef79b34b52f506780e01a.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Suspicious use of WriteProcessMemory
    PID:3988
    • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
      "C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe"
      2⤵
      • Executes dropped EXE
      • Checks processor information in registry
      • Suspicious behavior: EnumeratesProcesses
      PID:1608
    • C:\Windows\SysWOW64\regedit.exe
      "C:\Windows\System32\regedit.exe" \s C:\Windows\wotsuper.reg
      2⤵
      • Runs .reg file with regedit
      PID:1808
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdge.exe" -ServerName:MicrosoftEdge.AppXdnhjhccw3zf0j06tkg3jtqr00qdm0khc.mca
    1⤵
    • Drops file in Windows directory
    • Modifies Control Panel
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    PID:1268
  • C:\Windows\system32\browser_broker.exe
    C:\Windows\system32\browser_broker.exe -Embedding
    1⤵
    • Modifies Internet Explorer settings
    PID:1000
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies registry class
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of SetWindowsHookEx
    PID:4164
  • C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe
    "C:\Windows\SystemApps\Microsoft.MicrosoftEdge_8wekyb3d8bbwe\MicrosoftEdgeCP.exe" -ServerName:ContentProcess.AppX6z3cwk4fvgady6zya12j1cw28d228a7k.mca
    1⤵
    • Modifies Internet Explorer settings
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    PID:4232

Network

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

Modify Registry

1
T1112

Credential Access

Credentials in Files

3
T1081

Discovery

Query Registry

3
T1012

System Information Discovery

2
T1082

Collection

Data from Local System

3
T1005

Command and Control

Web Service

1
T1102

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
    MD5

    17767f5acff3a551913e6f89ceec5abc

    SHA1

    c267c5c63c954445b38aa66d7150762dfea639d0

    SHA256

    847a2a54035b006b90f615913e22edea992115bbe0df57292fd573465ad16d9b

    SHA512

    5eed9bbca866778add3cf60ce2ceea710e6a63c2622dc00cf2cc9c2078e38f6d0d86c1173d452a3dfc85f49ff3467ac0143cc3f9e022c55e25716661178a423e

  • C:\Program Files (x86)\wotsuper\wotsuper\wotsuper.exe
    MD5

    17767f5acff3a551913e6f89ceec5abc

    SHA1

    c267c5c63c954445b38aa66d7150762dfea639d0

    SHA256

    847a2a54035b006b90f615913e22edea992115bbe0df57292fd573465ad16d9b

    SHA512

    5eed9bbca866778add3cf60ce2ceea710e6a63c2622dc00cf2cc9c2078e38f6d0d86c1173d452a3dfc85f49ff3467ac0143cc3f9e022c55e25716661178a423e

  • memory/1608-0-0x0000000000000000-mapping.dmp
  • memory/1608-4-0x0000000000738000-0x0000000000739000-memory.dmp
    Filesize

    4KB

  • memory/1608-5-0x0000000002130000-0x0000000002131000-memory.dmp
    Filesize

    4KB

  • memory/1808-3-0x0000000000000000-mapping.dmp