xworm | 8d59ef4f887ea68153faebb1ac97e69319087ff059903d4b26d1961828a8cbca

Reason

Machine shutdown

General

Target

questmodinstaller.exe
Size

176KB
MD5

ed369f4bf4345b9a0680f904495cd101
SHA1

6dceb43de613608cc8468998605eb4b7836b2412
SHA256

8d59ef4f887ea68153faebb1ac97e69319087ff059903d4b26d1961828a8cbca
SHA512

48b4f2b3a87b76985d6c1b513fa261c822ffd4ae5aa9f8b9cbd9e8dafa684bc0a4cb23a16b8202bd33717a3834c1b54ef9266ca1e27db251dc83752c54eb4761
SSDEEP

3072:gNOFXeivN1tvdibFsmIlOo2FzRbSHNBz65/M6If+3Js+3JFkKeTno:g05vNwbFGHNxBt25

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:53655

147.185.221.24::53655

147.185.221.24:53655

topics-properties.gl.at.ply.gg:53655

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/2056-1-0x0000000000DB0000-0x0000000000DE2000-memory.dmp	family_xworm
behavioral2/files/0x000f000000023bac-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
4964	powershell.exe
228	powershell.exe
5072	powershell.exe
1168	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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	questmodinstaller.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
3936	XClient.exe

Looks up external IP address via web service 1 IoCs

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

flow	ioc
13	ip-api.com

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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	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\ColorizationAfterglow = "3288365271"	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
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\ColorizationColor = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "46"	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\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\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	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
2416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4964	powershell.exe
4964	powershell.exe
228	powershell.exe
228	powershell.exe
5072	powershell.exe
5072	powershell.exe
1168	powershell.exe
1168	powershell.exe
2056	questmodinstaller.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2056	questmodinstaller.exe
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeDebugPrivilege	228	powershell.exe
Token: SeDebugPrivilege	5072	powershell.exe
Token: SeDebugPrivilege	1168	powershell.exe
Token: SeDebugPrivilege	2056	questmodinstaller.exe
Token: SeDebugPrivilege	3936	XClient.exe
Token: SeShutdownPrivilege	2540	shutdown.exe
Token: SeRemoteShutdownPrivilege	2540	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2056	questmodinstaller.exe
4340	LogonUI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2056 wrote to memory of 4964	2056	questmodinstaller.exe	83
PID 2056 wrote to memory of 4964	2056	questmodinstaller.exe	83
PID 2056 wrote to memory of 228	2056	questmodinstaller.exe	85
PID 2056 wrote to memory of 228	2056	questmodinstaller.exe	85
PID 2056 wrote to memory of 5072	2056	questmodinstaller.exe	87
PID 2056 wrote to memory of 5072	2056	questmodinstaller.exe	87
PID 2056 wrote to memory of 1168	2056	questmodinstaller.exe	89
PID 2056 wrote to memory of 1168	2056	questmodinstaller.exe	89
PID 2056 wrote to memory of 2416	2056	questmodinstaller.exe	91
PID 2056 wrote to memory of 2416	2056	questmodinstaller.exe	91
PID 2056 wrote to memory of 2540	2056	questmodinstaller.exe	102
PID 2056 wrote to memory of 2540	2056	questmodinstaller.exe	102

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\questmodinstaller.exe
"C:\Users\Admin\AppData\Local\Temp\questmodinstaller.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2056
- 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\questmodinstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4964
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'questmodinstaller.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:228
- 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:5072
- 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:1168
- 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:2416
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:2540

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3936

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa39b6855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:4340

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

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
b1a1d8b05525b7b0c5babfd80488c1f2

SHA1
c85bbd6b7d0143676916c20fd52720499c2bb5c6

SHA256
adad192fc86c2f939fd3f70cb9ad323139a4e100f7c90b4454e2c53bdbc9b705

SHA512
346c6513c1373bab58439e37d3f75de1c5c587d7eb27076cf696e885a027b3b38d70b585839d1a2e7f2270cdcf0dac8c1fdff799f3b1158242ae9e3364c2a06e

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

Filesize
944B

MD5
5436d948c5a2fd929db90a9c805ec461

SHA1
3787c5c5283aefc05f89397e54faf61723295208

SHA256
8e628eeba175c8edd18dfc098d6f70fac57c85922cf145a5a27c00bbe1a7513a

SHA512
c12ab68a377fd59c7fd867c195dfc73e21df975e7abcab266c028f4ff2a8d96f95bfded27bf5d6fb683e8b22e09cbf9bbfe7b59be8de985344b1956a61a2ade7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tyzdcwk5.hdn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
176KB

MD5
ed369f4bf4345b9a0680f904495cd101

SHA1
6dceb43de613608cc8468998605eb4b7836b2412

SHA256
8d59ef4f887ea68153faebb1ac97e69319087ff059903d4b26d1961828a8cbca

SHA512
48b4f2b3a87b76985d6c1b513fa261c822ffd4ae5aa9f8b9cbd9e8dafa684bc0a4cb23a16b8202bd33717a3834c1b54ef9266ca1e27db251dc83752c54eb4761

Download Submit
memory/2056-0-0x00007FF9430B3000-0x00007FF9430B5000-memory.dmp

Filesize
8KB

Download
memory/2056-2-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/2056-1-0x0000000000DB0000-0x0000000000DE2000-memory.dmp

Filesize
200KB

Download
memory/2056-52-0x00007FF9430B3000-0x00007FF9430B5000-memory.dmp

Filesize
8KB

Download
memory/2056-57-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/2056-58-0x000000001BA80000-0x000000001BA8C000-memory.dmp

Filesize
48KB

Download
memory/2056-62-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-13-0x000001C2F8550000-0x000001C2F8572000-memory.dmp

Filesize
136KB

Download
memory/4964-14-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-17-0x00007FF9430B0000-0x00007FF943B71000-memory.dmp

Filesize
10.8MB

Download
memory/4964-3-0x00007FF9430B0000-0x00007FF943B71000-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