Overview

overview

10

Static

static

10

fr2nnk.exe

windows10-1703-x64

10

fr2nnk.exe

windows7-x64

10

fr2nnk.exe

windows10-2004-x64

10

fr2nnk.exe

windows11-21h2-x64

10

grab.exe

windows10-1703-x64

10

grab.exe

windows7-x64

7

grab.exe

windows10-2004-x64

8

grab.exe

windows11-21h2-x64

8

m2zen.exe

windows10-1703-x64

7

m2zen.exe

windows7-x64

7

m2zen.exe

windows10-2004-x64

7

m2zen.exe

windows11-21h2-x64

7

winhlp32.exe

windows10-1703-x64

10

winhlp32.exe

windows7-x64

10

winhlp32.exe

windows10-2004-x64

10

winhlp32.exe

windows11-21h2-x64

10

Sharing

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General

  • Target

    Desktop.rar

  • Size

    7.7MB

  • Sample

    240511-lwjxdsed84

  • MD5

    9cc6e589dbec3c5a5c23d5899737167d

  • SHA1

    1006e9353adfc58748d50affd780a6d158b97264

  • SHA256

    1cf4d4852822a36a9c57c64e0a4a7c14c27751b448910f841e0733f586239814

  • SHA512

    3181b2306583d01bb6e7b6d43f9bd22817d10162a0a9d6d6e99f0a1d6b30af82db3027f4e21075e18d51b1425d27693f3ee99e00ccba349341f47b60600986c3

  • SSDEEP

    196608:0N8YGgYSzLbi79iF7vzUCADNX+03hVWcVRzZ8ri:9HgYSO67LeNXZLPjt8ri

Score
10/10
blankgrabberxwormevasionexecutionpersistenceratspywarestealertrojanupx

Malware Config

Extracted

Family

xworm

Version

3.0

C2

else-movers.gl.at.ply.gg:28764

147.185.221.18:41012
Mutex

iXKagAiYnmlygFVn

Attributes
  • Install_directory

    %LocalAppData%

  • install_file

    USB.exe

aes.plain

Targets

    • Target

      fr2nnk.ex

    • Size

      32KB

    • MD5

      8d8bb72d313438d850c0fd079314e867

    • SHA1

      7c3adc8b21b1404e506af0ba332a84f50f502038

    • SHA256

      17ed10cc2d0e8a27b3823d7fdbe56a8a126e6b89f104e217d6d569fdfd88a679

    • SHA512

      ed08efba52b9dcbf132e02a174e3526bd343145801367570d8bceac1a156582d553019a6e0df25afbacf620fc0d9c7543f0b52696fefb658a6060cc6ceddac49

    • SSDEEP

      768:P1Xm1TliVBx7XDH4tyIJ8phhFyr9UBOjhe2Qx8:P1XmplgXHEJoFY9UBOjTQx8

    Score
    10/10
    xwormpersistencerattrojan

    • Detect Xworm Payload

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Drops startup file

    • Adds Run key to start application

      persistence
    behavioral1behavioral2behavioral3behavioral4

    • Target

      grab.ex

    • Size

      7.5MB

    • MD5

      553d236d2a6a0a4ca78641f9a932ecaa

    • SHA1

      3b0354f24b67f16efd93afcb95540886ef091490

    • SHA256

      5ec487769f184e246bef6dc014df3eed2193d22c7887b0adedc4bb69299f8cf4

    • SHA512

      e575738994a46704f14d44b9e38b3f9b67f2d507eb7fce7ada95b6dfe5697b783137de20dc88004f5fae964ffbcd47880447d6b07c2024353c7f926054333bc6

    • SSDEEP

      196608:FyQsJbT/9bvLz3S1bA32O5iJdYW0+S5/Ukgdv:uJbTlj3S1bO2g8c+Si5

    Score
    10/10
    evasionexecutionupxspywarestealer

    • Deletes Windows Defender Definitions

      Uses mpcmdrun utility to delete all AV definitions.

      evasion

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Command and Scripting Interpreter: PowerShell

      Using powershell.exe command.

      execution

    • Executes dropped EXE

    • Loads dropped DLL

    • Reads user/profile data of web browsers

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

      spywarestealer

    • UPX packed file

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

      upx

    • Accesses cryptocurrency files/wallets, possible credential harvesting

      spyware

    • Legitimate hosting services abused for malware hosting/C2

    • Looks up external IP address via web service

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

    behavioral5behavioral6behavioral7behavioral8

    • Target

      m2zen

    • Size

      210KB

    • MD5

      3ae919d27d1e034cdcd8825e6f439397

    • SHA1

      e35e951c0e892e3213088766c80050f5ce4c88b2

    • SHA256

      f227037997a514d0b16dfc8e02dfc522ba409768f3c2c5faba127762851a77ca

    • SHA512

      f5a1969770c79f8c5abb313e11c445e5d135b8667a75aa407ccbbff69d02a22c9ac47db0d3e4f7238f4ba3fe1c0d57290904464802e4ee571c594e6075bb2921

    • SSDEEP

      6144:2vyF8JOSSS/jEuVKmRo8J7RoxkAugtddd/uU2Nkyb5ZgFgvcjXCb:2w8J9LvWddmUaZzvcjW

    Score
    7/10
    persistence

    • Checks computer location settings

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

    • Drops startup file

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

    behavioral10behavioral11behavioral12behavioral9

    • Target

      winhlp32.ex

    • Size

      205KB

    • MD5

      a83dc22ef14c6b5d96aaee00b10a4973

    • SHA1

      ef84a5e12797487e7a4c1acaa9f783eda6cc77d5

    • SHA256

      143e319ba8ca646021e2c90acc56ebb035612146b5c8c128214da52b1386e68d

    • SHA512

      0662b2fb69f781f53333c71c3f6abbb581165457662c1f6667568b07828ee4b7b056caaff7dd1c1b857bc4bcf12743eae3489de2be426035498a82bd0caaeccc

    • SSDEEP

      6144:y2q1XI3ttUUcmIN1EAr4SeBid/eedR19:lq143cUcB1pzP1Xd

    Score
    10/10
    xwormexecutionpersistencerattrojan

    • Detect Xworm Payload

    • Suspicious use of NtCreateUserProcessOtherParentProcess

    • Xworm

      Xworm is a remote access trojan written in C#.

      trojanratxworm

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

      execution

    • Checks BIOS information in registry

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

    • Checks computer location settings

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

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Adds Run key to start application

      persistence

    • Looks up external IP address via web service

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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral13behavioral14behavioral15behavioral16

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

4
T1059

PowerShell

3
T1059.001

Scheduled Task/Job

2
T1053

Persistence

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

2
T1053

Privilege Escalation

Boot or Logon Autostart Execution

3
T1547

Registry Run Keys / Startup Folder

3
T1547.001

Scheduled Task/Job

2
T1053

Defense Evasion

Modify Registry

3
T1112

Impair Defenses

1
T1562

Credential Access

Unsecured Credentials

2
T1552

Credentials In Files

2
T1552.001

Discovery

System Information Discovery

10
T1082

Process Discovery

1
T1057

Query Registry

6
T1012

Lateral Movement

Collection

Data from Local System

2
T1005

Exfiltration

Command and Control

Web Service

1
T1102

Impact

Resource Development

Reconnaissance

Tasks