xworm | ee94f31406ba029502b3737f9d2c2d2d22448643deaa3095239a55b58b9169c8

General

Target

NLHybrid Fixer.exe
Size

42KB
MD5

269085c7755574a5cd840b298a0b4a55
SHA1

3b20a9f3c0e5ed34d37c5c915c07fd93da7d7cbd
SHA256

ee94f31406ba029502b3737f9d2c2d2d22448643deaa3095239a55b58b9169c8
SHA512

47b5782e53cf03bb5eb8f96584b9e0608bc10038b8721761bf67af75ed0b77a2e51ef94a9d62302e6e0d45885e72d47b80815caa8c063a616d50b646885b5f65
SSDEEP

768:yvD19vXwj/0OhWgEiymT+jxPuqF3t9NRX6POChM0LevH:I19/wj/F8iy/P5F99NRX6POCK0k

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

remote-newest.gl.at.ply.gg:62113

fund-scared.gl.at.ply.gg:62113

Mutex

UrM5eoX12ULh6st6

Attributes

Install_directory
%Userprofile%
install_file
win64updater.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/2040-1-0x00000000009F0000-0x0000000000A00000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4800	powershell.exe
1644	powershell.exe
4980	powershell.exe
2544	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	NLHybrid Fixer.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win64updater.lnk	NLHybrid Fixer.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\win64updater.lnk	NLHybrid Fixer.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\win64updater = "C:\\Users\\Admin\\win64updater.exe"	NLHybrid Fixer.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2356	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
3996	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
2040	NLHybrid Fixer.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4800	powershell.exe
4800	powershell.exe
1644	powershell.exe
1644	powershell.exe
4980	powershell.exe
4980	powershell.exe
2544	powershell.exe
2544	powershell.exe
2040	NLHybrid Fixer.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2040	NLHybrid Fixer.exe
Token: SeDebugPrivilege	4800	powershell.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	4980	powershell.exe
Token: SeDebugPrivilege	2544	powershell.exe
Token: SeDebugPrivilege	2040	NLHybrid Fixer.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2040	NLHybrid Fixer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 2040 wrote to memory of 4800	2040	NLHybrid Fixer.exe	90
PID 2040 wrote to memory of 4800	2040	NLHybrid Fixer.exe	90
PID 2040 wrote to memory of 1644	2040	NLHybrid Fixer.exe	95
PID 2040 wrote to memory of 1644	2040	NLHybrid Fixer.exe	95
PID 2040 wrote to memory of 4980	2040	NLHybrid Fixer.exe	97
PID 2040 wrote to memory of 4980	2040	NLHybrid Fixer.exe	97
PID 2040 wrote to memory of 2544	2040	NLHybrid Fixer.exe	101
PID 2040 wrote to memory of 2544	2040	NLHybrid Fixer.exe	101
PID 2040 wrote to memory of 3996	2040	NLHybrid Fixer.exe	103
PID 2040 wrote to memory of 3996	2040	NLHybrid Fixer.exe	103
PID 2040 wrote to memory of 4076	2040	NLHybrid Fixer.exe	110
PID 2040 wrote to memory of 4076	2040	NLHybrid Fixer.exe	110
PID 2040 wrote to memory of 756	2040	NLHybrid Fixer.exe	112
PID 2040 wrote to memory of 756	2040	NLHybrid Fixer.exe	112
PID 756 wrote to memory of 2356	756	cmd.exe	114
PID 756 wrote to memory of 2356	756	cmd.exe	114

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.exe
"C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2040
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\NLHybrid Fixer.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NLHybrid Fixer.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1644
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\win64updater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'win64updater.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2544
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "win64updater" /tr "C:\Users\Admin\win64updater.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3996
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "win64updater"
  2⤵
  PID:4076
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpC9D8.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:756
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2356

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6c47b3f4e68eebd47e9332eebfd2dd4e

SHA1
67f0b143336d7db7b281ed3de5e877fa87261834

SHA256
8c48b1f2338e5b24094821f41121d2221f1cb3200338f46df49f64d1c4bc3e0c

SHA512
0acf302a9fc971ef9df65ed42c47ea17828e54dff685f4434f360556fd27cdc26a75069f00dcdc14ba174893c6fd7a2cfd8c6c07be3ce35dafee0a006914eaca

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yjwyqv4o.3lj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC9D8.tmp.bat

Filesize
166B

MD5
7bd53b5b81ad48d57d6abeaff989d8ce

SHA1
0a22ceefcf139043cc283e96952c2acd220466eb

SHA256
e48bb2521c0c132c3a9578dbd7dbedc6d2f5c44a20a05fbfa1abaf27381bedb7

SHA512
0eae48d4343b4929569bc4f9666c92372f1df9b34f5b5efbd3239d19e4ebf6cfd5dc5a5cce19f2b17cf9a80d41fb7796f2d96a9252b3d72cde236fd226df5d10

Download Submit
memory/2040-53-0x00007FFB68253000-0x00007FFB68255000-memory.dmp

Filesize
8KB

Download
memory/2040-0-0x00007FFB68253000-0x00007FFB68255000-memory.dmp

Filesize
8KB

Download
memory/2040-57-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/2040-58-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/2040-65-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/2040-1-0x00000000009F0000-0x0000000000A00000-memory.dmp

Filesize
64KB

Download
memory/4800-17-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/4800-14-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/4800-13-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/4800-12-0x00007FFB68250000-0x00007FFB68D11000-memory.dmp

Filesize
10.8MB

Download
memory/4800-2-0x000001B2AACF0000-0x000001B2AAD12000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads