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Overview

overview

10

Static

static

7

3899f16e30...6c.exe

windows7-x64

10

3899f16e30...6c.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    150s
  • max time network
    130s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
  • submitted
    05/01/2024, 11:43

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General

  • Target

    3899f16e30129406a4a0858f6f16c66c.exe

  • Size

    63KB

  • MD5

    3899f16e30129406a4a0858f6f16c66c

  • SHA1

    2bac48457a15908d400c06f8dff0ccf87ec4fc7e

  • SHA256

    115e7f579b456e7ffe1b611eec0f1fc3223b1a564c230ccdae23eccaa5144c91

  • SHA512

    7b2aaff22d07394b8a07484c03be473e3f108d3245fee663e5d6990e5c510490e35592bd45906373043a452b2891e610dcc06f0fa5ac313342610298a68e0b02

  • SSDEEP

    1536:dv927G7dcJq4Ir36jXFEZbFo5q7NGf5EK8AMdjejx5bmWhnouy8km:V927gdcJ636jXFEZbRRdje9/Boutkm

Score
10/10
evasionpersistencespywarestealertrojanupx

Malware Config

Signatures

  • Modifies firewall policy service 2 TTPs 14 IoCs
    evasion
  • Modifies security service 2 TTPs 1 IoCs
    evasion
  • Modifies visibility of file extensions in Explorer 2 TTPs 1 IoCs
    evasion
  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
    evasion
  • UAC bypass 3 TTPs 3 IoCs
    evasiontrojan
  • Windows security bypass 2 TTPs 4 IoCs
    evasiontrojan
  • Disables RegEdit via registry modification 1 IoCs
    evasion
  • Disables Task Manager via registry modification
    evasion
  • Drops file in Drivers directory 1 IoCs
  • Sets file execution options in registry 2 TTPs 64 IoCs
    persistence
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • Reads user/profile data of web browsers 2 TTPs

    Infostealers often target stored browser data, which can include saved credentials etc.

    spywarestealer
  • UPX packed file 15 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

    upx
  • Windows security modification 2 TTPs 15 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 2 IoCs
    persistence
  • Checks whether UAC is enabled 1 TTPs 1 IoCs
    evasiontrojan
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies Control Panel 2 IoCs
    evasion
  • Modifies Internet Explorer settings 1 TTPs 14 IoCs
    adwarespyware
  • Modifies Internet Explorer start page 1 TTPs 2 IoCs
    stealer
  • Modifies registry class 24 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
    evasionspywaretrojan
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 1 IoCs
  • Suspicious use of SetWindowsHookEx 5 IoCs
  • Suspicious use of WriteProcessMemory 13 IoCs
  • System policy modification 1 TTPs 4 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\3899f16e30129406a4a0858f6f16c66c.exe
    "C:\Users\Admin\AppData\Local\Temp\3899f16e30129406a4a0858f6f16c66c.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2668
    • C:\Users\Admin\E696D64614\winlogon.exe
      "C:\Users\Admin\E696D64614\winlogon.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of SetThreadContext
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2792
      • C:\Users\Admin\E696D64614\winlogon.exe
        "C:\Users\Admin\E696D64614\winlogon.exe"
        3⤵
        • Modifies firewall policy service
        • Modifies security service
        • Modifies visibility of file extensions in Explorer
        • Modifies visiblity of hidden/system files in Explorer
        • UAC bypass
        • Windows security bypass
        • Disables RegEdit via registry modification
        • Drops file in Drivers directory
        • Sets file execution options in registry
        • Executes dropped EXE
        • Windows security modification
        • Adds Run key to start application
        • Checks whether UAC is enabled
        • Modifies Control Panel
        • Modifies Internet Explorer settings
        • Modifies Internet Explorer start page
        • Modifies registry class
        • Modifies system certificate store
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        • System policy modification
        PID:2576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

2
T1547.001

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Abuse Elevation Control Mechanism

1
T1548

Bypass User Account Control

1
T1548.002

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Impair Defenses

3
T1562

Disable or Modify Tools

3
T1562.001

Modify Registry

13
T1112

Subvert Trust Controls

1
T1553

Install Root Certificate

1
T1553.004

Credential Access

Unsecured Credentials

1
T1552

Credentials In Files

1
T1552.001

Discovery

System Information Discovery

2
T1082

Lateral Movement

Collection

Data from Local System

1
T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015
    Filesize

    344B

    MD5

    8727f932326c780fe5ce06218e4923fc

    SHA1

    5171b858175d2866caf981cd80cd728db7a56df9

    SHA256

    27caabb167d1053abba02513b30e68a37cd8d335c133b3d86aae5d787ecedeb9

    SHA512

    b2cc2a8e709de180f191f8437c7b52f5130c668d84634cfb52bf78cbbdd41e0d4965290063ad270cddcbc4dfa0f6d0ec015bcf770d444d405cc42bb298567d06

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\Cab8E4D.tmp
    Filesize

    65KB

    MD5

    ac05d27423a85adc1622c714f2cb6184

    SHA1

    b0fe2b1abddb97837ea0195be70ab2ff14d43198

    SHA256

    c6456e12e5e53287a547af4103e0397cb9697e466cf75844312dc296d43d144d

    SHA512

    6d0ef9050e41fbae680e0e59dd0f90b6ac7fea5579ef5708b69d5da33a0ece7e8b16574b58b17b64a34cc34a4ffc22b4a62c1ece61f36c4a11a0665e0536b90d

    Download Submit

  • C:\Users\Admin\AppData\Local\Temp\Tar8FF5.tmp
    Filesize

    171KB

    MD5

    9c0c641c06238516f27941aa1166d427

    SHA1

    64cd549fb8cf014fcd9312aa7a5b023847b6c977

    SHA256

    4276af3669a141a59388bc56a87f6614d9a9bdddf560636c264219a7eb11256f

    SHA512

    936ed0c0b0a7ff8e606b1cc4175a1f9b3699748ccbba1c3aff96203033d2e9edabf090e5148370df42fbfc4e31d7229493706ff24f19ff42ff7bef74a6baad06

    Download Submit

  • \Users\Admin\E696D64614\winlogon.exe
    Filesize

    63KB

    MD5

    3899f16e30129406a4a0858f6f16c66c

    SHA1

    2bac48457a15908d400c06f8dff0ccf87ec4fc7e

    SHA256

    115e7f579b456e7ffe1b611eec0f1fc3223b1a564c230ccdae23eccaa5144c91

    SHA512

    7b2aaff22d07394b8a07484c03be473e3f108d3245fee663e5d6990e5c510490e35592bd45906373043a452b2891e610dcc06f0fa5ac313342610298a68e0b02

    Download Submit

  • memory/2576-79-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2576-23-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2576-22-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2576-108-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2576-18-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2576-21-0x0000000000400000-0x0000000000425000-memory.dmp

    Filesize

    148KB

    Download

  • memory/2668-0-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2668-13-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-15-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-26-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-109-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-115-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-121-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download

  • memory/2792-127-0x0000000000400000-0x0000000000441000-memory.dmp

    Filesize

    260KB

    Download