xworm | 3d812652bff62c3321446e5591acb27f2b40e4d42872c3629588bfc2ac31151b

Reason

Machine shutdown

General

Target

XClient.exe
Size

86KB
MD5

2473c3e8b3d22cbfaa9b5d8115f6166b
SHA1

71e87a094f3e4686839bcc073ae9b0ac7a371ebf
SHA256

3d812652bff62c3321446e5591acb27f2b40e4d42872c3629588bfc2ac31151b
SHA512

51ea5719bfac698f029cd02f74384ec2d88cd7bec858c4fcb5887cb31488f9aea387ee5d057dc6efb2940ef56bd0bc423d9771d6ddb7436644ada94a35f556d2
SSDEEP

1536:M5EkmroQStrBcx9B4YD8yto0En9bBAbFAJxxo96uODf6JT+zo:0ErqWR4k8ytoLn9b8ASO7WUo

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

story-pl.gl.at.ply.gg:13978

Attributes

Install_directory
%Temp%
install_file
MicrosoftAudioDriver.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/1180-0-0x0000000000D40000-0x0000000000D5C000-memory.dmp	family_xworm
behavioral1/files/0x0004000000016923-67.dat	family_xworm

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

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-1-5-21-3270530367-132075249-2153716227-1000\Control Panel\International\Geo\Nation	XClient.exe

Executes dropped EXE 1 IoCs

pid	Process
4584	MicrosoftAudioDriver.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-1-5-21-3270530367-132075249-2153716227-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\MicrosoftAudioDriver = "C:\\Users\\Admin\\AppData\\Local\\Temp\\MicrosoftAudioDriver.exe"	XClient.exe

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

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

persistence

Scheduled Task/Job

T1053

pid	Process
876	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	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\AccentColor = "4292311040"	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\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
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\DWM\ColorizationColorBalance = "89"	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\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "54"	LogonUI.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1180	XClient.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4884	powershell.exe
4884	powershell.exe
3768	powershell.exe
3768	powershell.exe
3600	powershell.exe
3600	powershell.exe
1644	powershell.exe
1644	powershell.exe
1180	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1180	XClient.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeDebugPrivilege	3768	powershell.exe
Token: SeDebugPrivilege	3600	powershell.exe
Token: SeDebugPrivilege	1644	powershell.exe
Token: SeDebugPrivilege	1180	XClient.exe
Token: SeDebugPrivilege	4584	MicrosoftAudioDriver.exe
Token: SeShutdownPrivilege	4472	shutdown.exe
Token: SeRemoteShutdownPrivilege	4472	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1180	XClient.exe
2848	LogonUI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1180 wrote to memory of 4884	1180	XClient.exe	92
PID 1180 wrote to memory of 4884	1180	XClient.exe	92
PID 1180 wrote to memory of 3768	1180	XClient.exe	94
PID 1180 wrote to memory of 3768	1180	XClient.exe	94
PID 1180 wrote to memory of 3600	1180	XClient.exe	96
PID 1180 wrote to memory of 3600	1180	XClient.exe	96
PID 1180 wrote to memory of 1644	1180	XClient.exe	98
PID 1180 wrote to memory of 1644	1180	XClient.exe	98
PID 1180 wrote to memory of 876	1180	XClient.exe	100
PID 1180 wrote to memory of 876	1180	XClient.exe	100
PID 1180 wrote to memory of 4472	1180	XClient.exe	116
PID 1180 wrote to memory of 4472	1180	XClient.exe	116

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- 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:1180
- 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\XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3768
- 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\MicrosoftAudioDriver.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3600
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'MicrosoftAudioDriver.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1644
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "MicrosoftAudioDriver" /tr "C:\Users\Admin\AppData\Local\Temp\MicrosoftAudioDriver.exe"
  2⤵
  - Creates scheduled task(s)
  PID:876
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4472

C:\Users\Admin\AppData\Local\Temp\MicrosoftAudioDriver.exe
C:\Users\Admin\AppData\Local\Temp\MicrosoftAudioDriver.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4584

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3907855 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:2848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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
440cb38dbee06645cc8b74d51f6e5f71

SHA1
d7e61da91dc4502e9ae83281b88c1e48584edb7c

SHA256
8ef7a682dfd99ff5b7e9de0e1be43f0016d68695a43c33c028af2635cc15ecfe

SHA512
3aab19578535e6ba0f6beb5690c87d970292100704209d2dcebddcdd46c6bead27588ef5d98729bfd50606a54cc1edf608b3d15bef42c13b9982aaaf15de7fd6

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

Filesize
944B

MD5
42cc9ff3509672894beabcd392a00c43

SHA1
c12dc74a6c8a8e1f8f4033d31495ebb09d70e9ab

SHA256
352d90b619218e7bf297219c1468e9ea487c9002e28984ec70a963088dff3579

SHA512
c876de012d1b237463b2c2a4195e050c2ddbdf5725aa2553313525ecb6a4a3f0cda9a289f257b886395da6407b5173451e95df89665ae1c727c6be3753a89271

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

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

Filesize
944B

MD5
a7cc007980e419d553568a106210549a

SHA1
c03099706b75071f36c3962fcc60a22f197711e0

SHA256
a5735921fc72189c8bf577f3911486cf031708dc8d6bc764fe3e593c0a053165

SHA512
b9aaf29403c467daef80a1ae87478afc33b78f4e1ca16189557011bb83cf9b3e29a0f85c69fa209c45201fb28baca47d31756eee07b79c6312c506e8370f7666

Download Submit
C:\Users\Admin\AppData\Local\Temp\MicrosoftAudioDriver.exe

Filesize
86KB

MD5
2473c3e8b3d22cbfaa9b5d8115f6166b

SHA1
71e87a094f3e4686839bcc073ae9b0ac7a371ebf

SHA256
3d812652bff62c3321446e5591acb27f2b40e4d42872c3629588bfc2ac31151b

SHA512
51ea5719bfac698f029cd02f74384ec2d88cd7bec858c4fcb5887cb31488f9aea387ee5d057dc6efb2940ef56bd0bc423d9771d6ddb7436644ada94a35f556d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_1owzl45h.t50.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1180-65-0x0000000001530000-0x0000000001540000-memory.dmp

Filesize
64KB

Download
memory/1180-66-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/1180-72-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/1180-1-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/1180-0-0x0000000000D40000-0x0000000000D5C000-memory.dmp

Filesize
112KB

Download
memory/1644-63-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/1644-50-0x0000010BC8470000-0x0000010BC8480000-memory.dmp

Filesize
64KB

Download
memory/1644-49-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/1644-51-0x0000010BC8470000-0x0000010BC8480000-memory.dmp

Filesize
64KB

Download
memory/3600-34-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/3600-36-0x000001EED2AB0000-0x000001EED2AC0000-memory.dmp

Filesize
64KB

Download
memory/3600-35-0x000001EED2AB0000-0x000001EED2AC0000-memory.dmp

Filesize
64KB

Download
memory/3600-48-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-30-0x000001BAF40B0000-0x000001BAF40C0000-memory.dmp

Filesize
64KB

Download
memory/3768-29-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/3768-31-0x000001BAF40B0000-0x000001BAF40C0000-memory.dmp

Filesize
64KB

Download
memory/3768-33-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/4584-69-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/4584-71-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/4884-17-0x00007FFABEF30000-0x00007FFABF9F1000-memory.dmp

Filesize
10.8MB

Download
memory/4884-7-0x00000251AD880000-0x00000251AD8A2000-memory.dmp

Filesize
136KB

Download
memory/4884-4-0x00000251AD8B0000-0x00000251AD8C0000-memory.dmp

Filesize
64KB

Download
memory/4884-3-0x00000251AD8B0000-0x00000251AD8C0000-memory.dmp

Filesize
64KB

Download
memory/4884-2-0x00007FFABEF30000-0x00007FFABF9F1000-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