xworm | 2d2e27dc029c468d7a019fcde90fb2ffddd0bf02cafa0357cd86310645bb7473

Analysis

max time kernel
92s
max time network
95s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
28/05/2024, 12:18

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Reason

Machine shutdown

General

Target
XClient.exe
Size 79KB
Sample240528-pg46kach6v
SHA256 2d2e27dc029c468d7a019fcde90fb2ffddd0bf02cafa0357cd86310645bb7473
MD5 81630e94eabda4e1a57ac4f1952db556
SHA1 9d7276205d8cedba924859bbbbef305890baff23
SHA512 f9dca5f30cc1908d47a806c5b2b3a1c1b8c3c3b75bbdac9811307f83f4ac2fabcb6f2ae7630c9f25e7be5f710c525b63f49fa814c1d498d1d0872b5d9a7d3bec
SSDEEP 1536:ZG0+RNQYxXBpLLLoypsKCJJ5Ybimcg6cbD8K3QG6VG6xqhGpOggM3xZRw:Zb+RN5bLGFYbi7cDVg9A+OggM5w
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

https://pastebin.com/raw/qaWffTar:5

Attributes

Install_directory
%AppData%
install_file
svchost.exe
pastebin_url
https://pastebin.com/raw/qaWffTar

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1184-1-0x00000000002A0000-0x00000000002BA000-memory.dmp	family_xworm
behavioral2/files/0x0007000000022978-64.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
3920	powershell.exe
4528	powershell.exe
4296	powershell.exe
4484	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-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
392	svchost.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-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
27	pastebin.com
28	pastebin.com

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
24	ip-api.com

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
3244	schtasks.exe

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	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
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	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 = "233"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	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\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

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3920	powershell.exe
3920	powershell.exe
4528	powershell.exe
4528	powershell.exe
4296	powershell.exe
4296	powershell.exe
4484	powershell.exe
4484	powershell.exe
1184	XClient.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	1184	XClient.exe
Token: SeDebugPrivilege	3920	powershell.exe
Token: SeDebugPrivilege	4528	powershell.exe
Token: SeDebugPrivilege	4296	powershell.exe
Token: SeDebugPrivilege	4484	powershell.exe
Token: SeDebugPrivilege	1184	XClient.exe
Token: SeDebugPrivilege	392	svchost.exe
Token: SeShutdownPrivilege	4436	shutdown.exe
Token: SeRemoteShutdownPrivilege	4436	shutdown.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1184	XClient.exe
3744	LogonUI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1184 wrote to memory of 3920	1184	XClient.exe	93
PID 1184 wrote to memory of 3920	1184	XClient.exe	93
PID 1184 wrote to memory of 4528	1184	XClient.exe	96
PID 1184 wrote to memory of 4528	1184	XClient.exe	96
PID 1184 wrote to memory of 4296	1184	XClient.exe	98
PID 1184 wrote to memory of 4296	1184	XClient.exe	98
PID 1184 wrote to memory of 4484	1184	XClient.exe	101
PID 1184 wrote to memory of 4484	1184	XClient.exe	101
PID 1184 wrote to memory of 3244	1184	XClient.exe	103
PID 1184 wrote to memory of 3244	1184	XClient.exe	103
PID 1184 wrote to memory of 4436	1184	XClient.exe	112
PID 1184 wrote to memory of 4436	1184	XClient.exe	112

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
- 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:1184
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3920
- 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:4528
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4296
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4484
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3244
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe /f /s /t 0
  2⤵
  - Suspicious use of AdjustPrivilegeToken
  PID:4436

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:392

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3901055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:3744

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d
MD5 6d3e9c29fe44e90aae6ed30ccf799ca8
SHA1 c7974ef72264bbdf13a2793ccf1aed11bc565dce
SHA512 60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 692ec20c7039170fb199510f0436181fd155e6b4516d4d1c9e1675adf99aaa7f
MD5 ef72c47dbfaae0b9b0d09f22ad4afe20
SHA1 5357f66ba69b89440b99d4273b74221670129338
SHA512 7514b6bc8dc39fa618223300be27cd535dc35b18c66b4a089e2302e72b3e0cac06d88a989fa1296feb386b3cbe2084019df6430c7f895071b76e04ce559a30b4
MD5 SHA1 SHA512

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StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 6771a83a83da5d6ce23e9cfa5567eb70084dffd51a7c07130ba3379cff78a59f
MD5 b3c3db201c6e1fc54f0e17762fe03246
SHA1 249bfcef33cdd2d6c13a7cc7c9c1d73905fb51d6
SHA512 2945c6f4e05b86e161b9753fca74cc9daf76e8ef535cdff0e9d83cca706eabd6e1ca3aba55005b2d16c2023f6604ee6886837336a63f421fa25f73120cfc00a1
MD5 SHA1 SHA512

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__PSScriptPolicyTest_wglrf1u0.3i3.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wglrf1u0.3i3.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

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svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 79KB
SHA256 2d2e27dc029c468d7a019fcde90fb2ffddd0bf02cafa0357cd86310645bb7473
MD5 81630e94eabda4e1a57ac4f1952db556
SHA1 9d7276205d8cedba924859bbbbef305890baff23
SHA512 f9dca5f30cc1908d47a806c5b2b3a1c1b8c3c3b75bbdac9811307f83f4ac2fabcb6f2ae7630c9f25e7be5f710c525b63f49fa814c1d498d1d0872b5d9a7d3bec
SSDEEP 1536:ZG0+RNQYxXBpLLLoypsKCJJ5Ybimcg6cbD8K3QG6VG6xqhGpOggM3xZRw:Zb+RN5bLGFYbi7cDVg9A+OggM5w
MD5 SHA1 SHA512 SSDEEP

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memory/1184-59-0x00007FFB82733000-0x00007FFB82735000-memory.dmp

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memory/1184-61-0x000000001C9C0000-0x000000001C9CC000-memory.dmp

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memory/1184-60-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/1184-0-0x00007FFB82733000-0x00007FFB82735000-memory.dmp

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memory/1184-73-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/1184-2-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/1184-1-0x00000000002A0000-0x00000000002BA000-memory.dmp

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memory/1184-57-0x000000001BC90000-0x000000001BD92000-memory.dmp

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memory/3920-3-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/3920-18-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/3920-15-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/3920-14-0x00007FFB82730000-0x00007FFB831F1000-memory.dmp

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memory/3920-4-0x000002B4B5C00000-0x000002B4B5C22000-memory.dmp

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Analysis

Sharing

Errors

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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