Analysis

  • max time kernel
    96s
  • max time network
    155s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    21-05-2022 12:26

General

  • Target

    PAGO_25_.exe

  • Size

    1.2MB

  • MD5

    94f2908697b9f698d5634f675dc6a5c8

  • SHA1

    9e6e83f145c01bedd3ef800b16e675d990f9d39e

  • SHA256

    79789ad11d75901af6b26bcb620abc4db6c1391c00544bf6d293760f98c3df76

  • SHA512

    042c67a7da5cdff3e159d918bb8fdde12d6b5d176e9b51460d4703ed68b33562c58d98cd140064fae4f336196a0e23efe78545f7bd621f77c305516b78b96ce5

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\Temp\79FE0CC911\Log.txt

Family

masslogger

Ransom Note
################################################################# MassLogger v1.3.4.0 ################################################################# ### Logger Details ### User Name: Admin IP: 154.61.71.51 Location: United States OS: Microsoft Windows 7 Ultimate 64bit CPU: Intel Core Processor (Broadwell) GPU: Standard VGA Graphics Adapter AV: NA Screen Resolution: 1280x720 Current Time: 5/21/2022 1:09:54 PM MassLogger Started: 5/21/2022 1:09:43 PM Interval: 96 hour MassLogger Process: C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe MassLogger Melt: false MassLogger Exit after delivery: false As Administrator: True Processes:

Signatures

  • MassLogger

    Masslogger is a .NET stealer targeting passwords from browsers, email and cryptocurrency clients.

  • MassLogger Main Payload 34 IoCs
  • MassLogger log file 1 IoCs

    Detects a log file produced by MassLogger.

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

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

  • Loads dropped DLL 1 IoCs
  • Obfuscated with Agile.Net obfuscator 1 IoCs

    Detects use of the Agile.Net commercial obfuscator, which is capable of entity renaming and control flow obfuscation.

  • 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
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\PAGO_25_.exe
    "C:\Users\Admin\AppData\Local\Temp\PAGO_25_.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1504
    • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
      "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      PID:2004

Network

MITRE ATT&CK Matrix ATT&CK v6

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • \Users\Admin\AppData\Local\Temp\InstallUtil.exe
    Filesize

    40KB

    MD5

    91c9ae9c9a17a9db5e08b120e668c74c

    SHA1

    50770954c1ceb0bb6f1d5d3f2de2a0a065773723

    SHA256

    e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

    SHA512

    ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

  • memory/1504-55-0x0000000000380000-0x0000000000394000-memory.dmp
    Filesize

    80KB

  • memory/1504-56-0x0000000000390000-0x0000000000398000-memory.dmp
    Filesize

    32KB

  • memory/1504-57-0x0000000000550000-0x0000000000558000-memory.dmp
    Filesize

    32KB

  • memory/1504-58-0x0000000000560000-0x0000000000568000-memory.dmp
    Filesize

    32KB

  • memory/1504-54-0x0000000001100000-0x000000000123C000-memory.dmp
    Filesize

    1.2MB

  • memory/2004-86-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-92-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-65-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-66-0x00000000004A382E-mapping.dmp
  • memory/2004-63-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-69-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-71-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-61-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-74-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-76-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-78-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-80-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-82-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-84-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-60-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-88-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-90-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-64-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-94-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-96-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-98-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-100-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-102-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-104-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-106-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-108-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-110-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-112-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-114-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-116-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-118-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-120-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-122-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-124-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-126-0x0000000000400000-0x00000000004A8000-memory.dmp
    Filesize

    672KB

  • memory/2004-580-0x0000000000590000-0x00000000005D0000-memory.dmp
    Filesize

    256KB