xworm | ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f

Reason

Machine shutdown

General

Target

vm.exe
Size

63KB
MD5

d7d169c7173b67f881c5b04aed08c0eb
SHA1

916cac2d81230bf709ce6fe4894ec74b3fb91a33
SHA256

ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f
SHA512

1116890516958b2772b3903cf50fa55169534b3a867c0644134d575d0bccd8dc31dd175c007874e50b121e34effab5676fd1282b70331941d0ce46284e7d8d47
SSDEEP

1536:C3UPUE/R41nfBEKU+bB2YFIrG6vUdb346tQD8O9r3gnst:CcSpEX+bBTiM9XJOBwst

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:17560

login-eye.gl.at.ply.gg:17560

147.185.221.27:17560

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/5284-1-0x0000000000B90000-0x0000000000BA6000-memory.dmp	family_xworm
behavioral1/files/0x000f0000000240e6-58.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
2244	powershell.exe
1808	powershell.exe
1972	powershell.exe
4864	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-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	vm.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4992	XClient.exe
856	XClient.exe
1256	XClient.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-1-5-21-1279544337-3716153908-718418795-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	vm.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "232"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.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
3808	schtasks.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
1972	powershell.exe
1972	powershell.exe
1972	powershell.exe
4864	powershell.exe
4864	powershell.exe
2244	powershell.exe
2244	powershell.exe
1808	powershell.exe
1808	powershell.exe
5284	vm.exe

Suspicious use of AdjustPrivilegeToken 11 IoCs

description	pid	Process
Token: SeDebugPrivilege	5284	vm.exe
Token: SeDebugPrivilege	1972	powershell.exe
Token: SeDebugPrivilege	4864	powershell.exe
Token: SeDebugPrivilege	2244	powershell.exe
Token: SeDebugPrivilege	1808	powershell.exe
Token: SeDebugPrivilege	5284	vm.exe
Token: SeDebugPrivilege	4992	XClient.exe
Token: SeDebugPrivilege	856	XClient.exe
Token: SeDebugPrivilege	1256	XClient.exe
Token: SeShutdownPrivilege	4564	shutdown.exe
Token: SeRemoteShutdownPrivilege	4564	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5284	vm.exe
3492	LogonUI.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 5284 wrote to memory of 1972	5284	vm.exe	93
PID 5284 wrote to memory of 1972	5284	vm.exe	93
PID 5284 wrote to memory of 4864	5284	vm.exe	95
PID 5284 wrote to memory of 4864	5284	vm.exe	95
PID 5284 wrote to memory of 2244	5284	vm.exe	97
PID 5284 wrote to memory of 2244	5284	vm.exe	97
PID 5284 wrote to memory of 1808	5284	vm.exe	100
PID 5284 wrote to memory of 1808	5284	vm.exe	100
PID 5284 wrote to memory of 3808	5284	vm.exe	102
PID 5284 wrote to memory of 3808	5284	vm.exe	102
PID 1904 wrote to memory of 4992	1904	cmd.exe	106
PID 1904 wrote to memory of 4992	1904	cmd.exe	106
PID 5284 wrote to memory of 4564	5284	vm.exe	122
PID 5284 wrote to memory of 4564	5284	vm.exe	122

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\vm.exe
"C:\Users\Admin\AppData\Local\Temp\vm.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5284
- 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\vm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1972
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'vm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4864
- 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\Roaming\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2244
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1808
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3808
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4564

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Suspicious use of WriteProcessMemory
PID:1904
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4992

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:856

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1256

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa391f855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3492

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\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
87d9fe9e5ee685ff2b66e5396fcdcb99

SHA1
0ac74edba86591b97d1a7531c3d2e659f0843b7f

SHA256
f84df996802a7b65b0a58ecd1960f157bdc82f817bae81409eb4184e438ed9b8

SHA512
ce602ffb6822849af961afc13b972d0d344bbfaa50c5fe372cf475f424a9227f788ea64a1dfa9b96d8e01cfa2b7f0f9e695ea001ea37a6c7c235c86931d1cf3e

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
e3161f4edbc9b963debe22e29658050b

SHA1
45dbf88dadafe5dd1cfee1e987c8a219d3208cdb

SHA256
1359d6daeaed2f254b162914203c891b23139cc236a3bf75c2dfcbe26265c84a

SHA512
006ffb8f37d1f77f8ee79b22ffa413819f565d62773c632b70985759572121c6ab4743139d16d885f8c0ff9d0e0b136686741728b3e142ee54aea3bb733dffb2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lskq5alj.5sf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe

Filesize
63KB

MD5
d7d169c7173b67f881c5b04aed08c0eb

SHA1
916cac2d81230bf709ce6fe4894ec74b3fb91a33

SHA256
ac6c77f1af1db36464ec184588cab3db8f7ce1541d4bc5b91c2b814d5f36fc7f

SHA512
1116890516958b2772b3903cf50fa55169534b3a867c0644134d575d0bccd8dc31dd175c007874e50b121e34effab5676fd1282b70331941d0ce46284e7d8d47

Download Submit
memory/1972-12-0x000001B84C0E0000-0x000001B84C102000-memory.dmp

Filesize
136KB

Download
memory/1972-17-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/1972-14-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/1972-13-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/1972-2-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/5284-0-0x00007FF81EFC3000-0x00007FF81EFC5000-memory.dmp

Filesize
8KB

Download
memory/5284-56-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/5284-60-0x00007FF81EFC3000-0x00007FF81EFC5000-memory.dmp

Filesize
8KB

Download
memory/5284-1-0x0000000000B90000-0x0000000000BA6000-memory.dmp

Filesize
88KB

Download
memory/5284-64-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download
memory/5284-65-0x0000000002CA0000-0x0000000002CAC000-memory.dmp

Filesize
48KB

Download
memory/5284-68-0x00007FF81EFC0000-0x00007FF81FA81000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads