Overview

overview

9

Static

static

9

EXM-2.1.1-...er.exe

windows10-2004-x64

9

EXM-2.1.1-...er.exe

windows11-ltsc_2024-x64

9

$PLUGINSDI...ls.dll

windows10-2004-x64

3

$PLUGINSDI...ls.dll

windows11-ltsc_2024-x64

3

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

$PLUGINSDIR/UAC.dll

windows10-2004-x64

3

$PLUGINSDIR/UAC.dll

windows11-ltsc_2024-x64

3

$PLUGINSDI...ll.dll

windows10-2004-x64

3

$PLUGINSDI...ll.dll

windows11-ltsc_2024-x64

3

EXM.exe

windows10-2004-x64

8

resources/...dex.js

windows10-2004-x64

3

resources/...dex.js

windows11-ltsc_2024-x64

3

resources/...ser.js

windows10-2004-x64

3

resources/...ser.js

windows11-ltsc_2024-x64

3

resources/...esm.js

windows10-2004-x64

3

resources/...esm.js

windows11-ltsc_2024-x64

3

resources/...fig.js

windows10-2004-x64

3

resources/...fig.js

windows11-ltsc_2024-x64

3

resources/...ce.exe

windows10-2004-x64

1

resources/...ce.exe

windows11-ltsc_2024-x64

1

resources/...ion.js

windows10-2004-x64

3

resources/...ion.js

windows11-ltsc_2024-x64

3

resources/...rts.js

windows10-2004-x64

3

resources/...rts.js

windows11-ltsc_2024-x64

3

resources/...eck.js

windows10-2004-x64

3

resources/...eck.js

windows11-ltsc_2024-x64

3

resources/...ver.js

windows10-2004-x64

3

resources/...ver.js

windows11-ltsc_2024-x64

3

resources/...ler.js

windows10-2004-x64

3

resources/...ler.js

windows11-ltsc_2024-x64

8

resources/...ity.js

windows10-2004-x64

3

Sharing

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General

  • Target
    EXM-2.1.1-installer.exe
  • Size 147.1MB
  • Sample260628-ctgjtaez2p
  • SHA256 4063c69bfbcc58bda796a349ea387a7a636cfa63be133df3eefaae162b1fb505
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
9/10
adwaredefense_evasiondiscoveryexecutionpersistenceprivilege_escalationransomwarespyware

Malware Config

Targets

    • Target
      EXM-2.1.1-installer.exe
    • Size 147.1MB
    • SHA256 4063c69bfbcc58bda796a349ea387a7a636cfa63be133df3eefaae162b1fb505
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    9/10
    defense_evasiondiscoveryexecutionprivilege_escalation

    • Detected Nirsoft tools

      Free utilities often used by attackers which can steal passwords, product keys, etc.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Stops running service(s)

      defense_evasionexecution

    • Checks installed software on the system

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

      discovery

    • Drops desktop.ini file(s)

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

      defense_evasion

    • Modifies boot configuration data using bcdedit

    • ConfuserEx .NET packer

      Detects ConfuserEx .NET packer.

    • Drops file in System32 directory

    • Enumerates processes with tasklist

      discovery
    behavioral1behavioral2
    • Target
      $PLUGINSDIR/StdUtils.dll
    • Size 100KB
    • SHA256 b72e9013a6204e9f01076dc38dabbf30870d44dfc66962adbf73619d4331601e
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral3behavioral4
    • Target
      $PLUGINSDIR/System.dll
    • Size 12KB
    • SHA256 3eb38ae99653a7dbc724132ee240f6e5c4af4bfe7c01d31d23faf373f9f2eaca
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral5behavioral6
    • Target
      $PLUGINSDIR/UAC.dll
    • Size 14KB
    • SHA256 2f7f8fc05dc4fd0d5cda501b47e4433357e887bbfed7292c028d99c73b52dc08
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    discovery
    behavioral7behavioral8
    • Target
      $PLUGINSDIR/WinShell.dll
    • Size 3KB
    • SHA256 9be85b986ea66a6997dde658abe82b3147ed2a1a3dcb784bb5176f41d22815a6
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    discovery
    behavioral10behavioral9
    • Target
      EXM.exe
    • Size 193.3MB
    • SHA256 1f6e8f87560739e1c7ae4be06ab5c513107a33a08a635a40aad5fad5ab6e2534
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    defense_evasiondiscoveryexecutionprivilege_escalation

    • Command and Scripting Interpreter: PowerShell

      Run Powershell and hide display window.

      execution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Drops desktop.ini file(s)

    • Modifies boot configuration data using bcdedit

    • Drops file in System32 directory

    • Enumerates processes with tasklist

      discovery
    behavioral11
    • Target
      resources/app.asar.unpacked/windows-service/node_modules/yargs/helpers/index.js
    • Size 291B
    • SHA256 073fc8dc10f93c3cb6563d7aa1c3512903c88107de9abe9408e15189e8f84ae0
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    execution
    behavioral12behavioral13
    • Target
      resources/app.asar.unpacked/windows-service/node_modules/yargs/lib/platform-shims/browser.mjs
    • Size 2KB
    • SHA256 0753be85c76b299420a7bd5bc9b925c6c7ed1fb15e872e2f547819490dfca697
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    execution
    behavioral14behavioral15
    • Target
      resources/app.asar.unpacked/windows-service/node_modules/yargs/lib/platform-shims/esm.mjs
    • Size 1KB
    • SHA256 0bf6133c39fff113943fd0bc1bb06492c05babb8b754ef85b5567d6591719302
    • MD5 SHA1 SHA512 TLSH
    Score
    3/10
    execution
    behavioral16behavioral17
    • Target
      resources/app.asar.unpacked/windows-service/src/config.js
    • Size 9KB
    • SHA256 b6e751a18024cee71a817e22569b282dd757645c2042e63d7b4a6d409c855e33
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral18behavioral19
    • Target
      resources/app.asar.unpacked/windows-service/src/daemon/exmantitamperingservice.exe
    • Size 58KB
    • SHA256 5859b114d96800a2b98ef9d19eaa573a786a422dad324547ef25be181389df01
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    1/10
    behavioral20behavioral21
    • Target
      resources/app.asar.unpacked/windows-service/src/encryption.js
    • Size 10KB
    • SHA256 7e59152210c50d637292183ce7d6928751a253577a9ff2008117d284b6597ead
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral22behavioral23
    • Target
      resources/app.asar.unpacked/windows-service/src/executeReverts.js
    • Size 12KB
    • SHA256 f3e6e5c92fbbd51ae5882ee8f166dc69bbdb2ad11c5a77a45febdc353df11cee
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral24behavioral25
    • Target
      resources/app.asar.unpacked/windows-service/src/healthCheck.js
    • Size 19KB
    • SHA256 a511870957d2bc9d83a2ebe8c5c9d68fd60c5256ec61bac2a2fc9a885e657924
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral26behavioral27
    • Target
      resources/app.asar.unpacked/windows-service/src/httpServer.js
    • Size 12KB
    • SHA256 71576f26cc7f0d2d6200dadbb1bfceab8f18a7d995fd262ed60b21588f6b68ee
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral28behavioral29
    • Target
      resources/app.asar.unpacked/windows-service/src/installer.js
    • Size 38KB
    • SHA256 e62b15016e63b0cc2501f98edbbfe173b30814cb2fb58695d28a3d6846f12272
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    8/10
    executionadwarepersistenceransomwarespyware

    • Boot or Logon Autostart Execution: Active Setup

      Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

      persistence

    • Enumerates connected drives

      Attempts to read the root path of hard drives other than the default C: drive.

    behavioral30behavioral31
    • Target
      resources/app.asar.unpacked/windows-service/src/integrity.js
    • Size 20KB
    • SHA256 40b62865438f941b5e226c14c5e28a21dd206ebd9a406a3286eebcc657d54289
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    3/10
    execution
    behavioral32

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

3
T1059

JavaScript

1
T1059.007

PowerShell

2
T1059.001

System Services

1
T1569

Service Execution

1
T1569.002

Persistence

Boot or Logon Autostart Execution

1
T1547

Active Setup

1
T1547.014

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Boot or Logon Autostart Execution

1
T1547

Active Setup

1
T1547.014

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Access Token Manipulation

1
T1134

Create Process with Token

1
T1134.002

Hide Artifacts

1
T1564

Ignore Process Interrupts

1
T1564.011

Impair Defenses

1
T1562

Indicator Removal

1
T1070

File Deletion

1
T1070.004

Modify Registry

2
T1112

Credential Access

Discovery

Peripheral Device Discovery

2
T1120

Process Discovery

1
T1057

Query Registry

7
T1012

System Information Discovery

6
T1082

System Location Discovery

1
T1614

System Language Discovery

1
T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

1
T1489

Tasks

static1

Score
9/10

behavioral1

defense_evasiondiscoveryexecutionprivilege_escalation
Score
9/10

behavioral2

defense_evasiondiscoveryexecutionprivilege_escalation
Score
9/10

behavioral3

discovery
Score
3/10

behavioral4

discovery
Score
3/10

behavioral5

discovery
Score
3/10

behavioral6

discovery
Score
3/10

behavioral7

discovery
Score
3/10

behavioral8

discovery
Score
3/10

behavioral9

discovery
Score
3/10

behavioral10

discovery
Score
3/10

behavioral11

defense_evasiondiscoveryexecutionprivilege_escalation
Score
8/10

behavioral12

execution
Score
3/10

behavioral13

execution
Score
3/10

behavioral14

execution
Score
3/10

behavioral15

execution
Score
3/10

behavioral16

execution
Score
3/10

behavioral17

execution
Score
3/10

behavioral18

execution
Score
3/10

behavioral19

execution
Score
3/10

behavioral20

Score
1/10

behavioral21

Score
1/10

behavioral22

execution
Score
3/10

behavioral23

execution
Score
3/10

behavioral24

execution
Score
3/10

behavioral25

execution
Score
3/10

behavioral26

execution
Score
3/10

behavioral27

execution
Score
3/10

behavioral28

execution
Score
3/10

behavioral29

execution
Score
3/10

behavioral30

execution
Score
3/10

behavioral31

adwareexecutionpersistenceransomwarespyware
Score
8/10

behavioral32

execution
Score
3/10