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 2 IoCs

resource	yara_rule
behavioral2/memory/4144-1-0x0000000000200000-0x0000000000210000-memory.dmp	family_xworm
behavioral2/files/0x000700000001e5b3-59.dat	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
1388	powershell.exe
3476	powershell.exe
484	powershell.exe
2240	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-1-5-21-2045521122-590294423-3465680274-1000\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

Executes dropped EXE 1 IoCs

pid	Process
3460	win64updater.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-1-5-21-2045521122-590294423-3465680274-1000\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
2344	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
4164	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4144	NLHybrid Fixer.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3476	powershell.exe
3476	powershell.exe
484	powershell.exe
484	powershell.exe
2240	powershell.exe
2240	powershell.exe
1388	powershell.exe
1388	powershell.exe
4144	NLHybrid Fixer.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	4144	NLHybrid Fixer.exe
Token: SeDebugPrivilege	3476	powershell.exe
Token: SeDebugPrivilege	484	powershell.exe
Token: SeDebugPrivilege	2240	powershell.exe
Token: SeDebugPrivilege	1388	powershell.exe
Token: SeDebugPrivilege	4144	NLHybrid Fixer.exe
Token: SeDebugPrivilege	3460	win64updater.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4144	NLHybrid Fixer.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 4144 wrote to memory of 3476	4144	NLHybrid Fixer.exe	90
PID 4144 wrote to memory of 3476	4144	NLHybrid Fixer.exe	90
PID 4144 wrote to memory of 484	4144	NLHybrid Fixer.exe	96
PID 4144 wrote to memory of 484	4144	NLHybrid Fixer.exe	96
PID 4144 wrote to memory of 2240	4144	NLHybrid Fixer.exe	99
PID 4144 wrote to memory of 2240	4144	NLHybrid Fixer.exe	99
PID 4144 wrote to memory of 1388	4144	NLHybrid Fixer.exe	102
PID 4144 wrote to memory of 1388	4144	NLHybrid Fixer.exe	102
PID 4144 wrote to memory of 4164	4144	NLHybrid Fixer.exe	104
PID 4144 wrote to memory of 4164	4144	NLHybrid Fixer.exe	104
PID 4144 wrote to memory of 1756	4144	NLHybrid Fixer.exe	115
PID 4144 wrote to memory of 1756	4144	NLHybrid Fixer.exe	115
PID 4144 wrote to memory of 4852	4144	NLHybrid Fixer.exe	116
PID 4144 wrote to memory of 4852	4144	NLHybrid Fixer.exe	116
PID 4852 wrote to memory of 2344	4852	cmd.exe	119
PID 4852 wrote to memory of 2344	4852	cmd.exe	119

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:4144
- 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:3476
- 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:484
- 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:2240
- 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:1388
- 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:4164
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "win64updater"
  2⤵
  PID:1756
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp8F0C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4852
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2344

C:\Users\Admin\win64updater.exe
C:\Users\Admin\win64updater.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3460

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
a43e653ffb5ab07940f4bdd9cc8fade4

SHA1
af43d04e3427f111b22dc891c5c7ee8a10ac4123

SHA256
c4c53abb13e99475aebfbe9fec7a8fead81c14c80d9dcc2b81375304f3a683fe

SHA512
62a97e95e1f19a8d4302847110dae44f469877eed6aa8ea22345c6eb25ee220e7d310fa0b7ec5df42356815421c0af7c46a0f1fee8933cc446641800eda6cd1b

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

Filesize
944B

MD5
1f8b23cd03fdfb5d4559ac10c445b89f

SHA1
cea378877687b1967095d5237e3c0111929f012d

SHA256
f1bb0869c1d26c4282aa06a4840a9ca86e9145c136af42bb85b6d2e77e684551

SHA512
3ffe559e174f4706d3e7681f0d88d53dfde5eef56ee5005ccf7b3036a5d6ba85e02fa4d0cb213d237afcb894d79fbe673b18f986f57db2904558f447e42fe550

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

Filesize
944B

MD5
10890cda4b6eab618e926c4118ab0647

SHA1
1e1d63b73a0e6c7575f458b3c7917a9ce5ba776d

SHA256
00f8a035324d39bd62e6dee5e1b480069015471c487ebee4479e6990ea9ddb14

SHA512
a2ee84006c24a36f25e0bca0772430d64e3791f233da916aecdeae6712763e77d55bbbd00dc8f6b2b3887f3c26ab3980b96c5f46cc823e81e28abbbc5fc78221

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\Temp\__PSScriptPolicyTest_2jjwbcwa.abf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8F0C.tmp.bat

Filesize
166B

MD5
09476520db4e4c1dca7a580dc707f2e7

SHA1
90cc188cfe3d91cc6ca2aa486230579ad82bb016

SHA256
58005d143796fcacff443135839bf13214abbc83ab40e6417943d1c3dd8e1fe7

SHA512
35349c98867a5ccf552b1ea8c8fd1e3e1a343eb077c091dab5244961038d836130dc0012556e40cd8f9f7b7f09208a321aedfcc8927944363c313a67f6e844f9

Download Submit
C:\Users\Admin\win64updater.exe

Filesize
42KB

MD5
269085c7755574a5cd840b298a0b4a55

SHA1
3b20a9f3c0e5ed34d37c5c915c07fd93da7d7cbd

SHA256
ee94f31406ba029502b3737f9d2c2d2d22448643deaa3095239a55b58b9169c8

SHA512
47b5782e53cf03bb5eb8f96584b9e0608bc10038b8721761bf67af75ed0b77a2e51ef94a9d62302e6e0d45885e72d47b80815caa8c063a616d50b646885b5f65

Download Submit
memory/3476-12-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3476-17-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3476-14-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3476-13-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/3476-11-0x0000021FEA660000-0x0000021FEA682000-memory.dmp

Filesize
136KB

Download
memory/4144-0-0x00007FFCB63E3000-0x00007FFCB63E5000-memory.dmp

Filesize
8KB

Download
memory/4144-56-0x00007FFCB63E3000-0x00007FFCB63E5000-memory.dmp

Filesize
8KB

Download
memory/4144-57-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4144-58-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4144-67-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4144-1-0x0000000000200000-0x0000000000210000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads