xworm | a71c8484a2a3d8f3cb4ec808e63123d5b2bc3df32a9dad5ade2786700687c1af

Analysis

max time kernel
1186s
max time network
1194s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
09-09-2024 07:36

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General

Target

worm.exe
Size

44KB
MD5

c5582c5a0f4569e3bddd255f62081f3d
SHA1

6714c1ccf695d9fbd4ef3c0a1b67fb63b5f96487
SHA256

a71c8484a2a3d8f3cb4ec808e63123d5b2bc3df32a9dad5ade2786700687c1af
SHA512

33aa4d2dcd3f89bf061e6e7aaff3dcd7d3c863707f0e3814ee17d94b0856531897d9494de7eb2bcc2d2f05934abeb7f29cc8fd9e00f3bd382cc57b3652abdc51
SSDEEP

768:+/rBwm5VCiTqFaD0hrOols+qLYMBA+F+t9pf72b16iOChvbVLSJ:+/uQVCiTqMD0hr/beBRFw9Zqb16iOC5g

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

192.168.1.106:7000

193.114.128.233:7000

Mutex

YJuSg89ZuiLRg1IM

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1592-1-0x0000000000B60000-0x0000000000B72000-memory.dmp	family_xworm
behavioral2/files/0x000d000000023378-58.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
3144	powershell.exe
3264	powershell.exe
4644	powershell.exe
2640	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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	worm.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 20 IoCs

pid	Process
2116	XClient.exe
3480	XClient.exe
4228	XClient.exe
648	XClient.exe
4268	XClient.exe
1428	XClient.exe
3244	XClient.exe
1780	XClient.exe
1676	XClient.exe
4628	XClient.exe
2328	XClient.exe
5064	XClient.exe
3440	XClient.exe
1260	XClient.exe
3708	XClient.exe
4644	XClient.exe
1104	XClient.exe
4608	XClient.exe
2164	XClient.exe
4576	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-1-5-21-2718105630-359604950-2820636825-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	worm.exe

Drops desktop.ini file(s) 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\Videos\Captures\desktop.ini	svchost.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

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	svchost.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	svchost.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Classes\Local Settings\Software\Microsoft\Windows\CurrentVersion\AppModel\Deployment\Package\*\S-1-5-21-2718105630-359604950-2820636825-1000\{C7D04891-33EA-4E01-88ED-765C95C3699F}	svchost.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
2276	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1592	worm.exe

Suspicious behavior: EnumeratesProcesses 55 IoCs

pid	Process
2640	powershell.exe
2640	powershell.exe
3144	powershell.exe
3144	powershell.exe
3264	powershell.exe
3264	powershell.exe
4644	powershell.exe
4644	powershell.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe
1592	worm.exe

Suspicious use of AdjustPrivilegeToken 26 IoCs

description	pid	Process
Token: SeDebugPrivilege	1592	worm.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	3144	powershell.exe
Token: SeDebugPrivilege	3264	powershell.exe
Token: SeDebugPrivilege	4644	powershell.exe
Token: SeDebugPrivilege	1592	worm.exe
Token: SeDebugPrivilege	2116	XClient.exe
Token: SeDebugPrivilege	3480	XClient.exe
Token: SeDebugPrivilege	4228	XClient.exe
Token: SeDebugPrivilege	648	XClient.exe
Token: SeDebugPrivilege	4268	XClient.exe
Token: SeDebugPrivilege	1428	XClient.exe
Token: SeDebugPrivilege	3244	XClient.exe
Token: SeDebugPrivilege	1780	XClient.exe
Token: SeDebugPrivilege	1676	XClient.exe
Token: SeDebugPrivilege	4628	XClient.exe
Token: SeDebugPrivilege	2328	XClient.exe
Token: SeDebugPrivilege	5064	XClient.exe
Token: SeDebugPrivilege	3440	XClient.exe
Token: SeDebugPrivilege	1260	XClient.exe
Token: SeDebugPrivilege	3708	XClient.exe
Token: SeDebugPrivilege	4644	XClient.exe
Token: SeDebugPrivilege	1104	XClient.exe
Token: SeDebugPrivilege	4608	XClient.exe
Token: SeDebugPrivilege	2164	XClient.exe
Token: SeDebugPrivilege	4576	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1592	worm.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1592 wrote to memory of 2640	1592	worm.exe	91
PID 1592 wrote to memory of 2640	1592	worm.exe	91
PID 1592 wrote to memory of 3144	1592	worm.exe	93
PID 1592 wrote to memory of 3144	1592	worm.exe	93
PID 1592 wrote to memory of 3264	1592	worm.exe	95
PID 1592 wrote to memory of 3264	1592	worm.exe	95
PID 1592 wrote to memory of 4644	1592	worm.exe	97
PID 1592 wrote to memory of 4644	1592	worm.exe	97
PID 1592 wrote to memory of 2276	1592	worm.exe	100
PID 1592 wrote to memory of 2276	1592	worm.exe	100

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\worm.exe
"C:\Users\Admin\AppData\Local\Temp\worm.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:1592
- 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\worm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'worm.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3144
- 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:3264
- 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:4644
- 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:2276

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2116

C:\Windows\system32\svchost.exe
C:\Windows\system32\svchost.exe -k BcastDVRUserService -s BcastDVRUserService
1⤵
- Drops desktop.ini file(s)
- Checks processor information in registry
- Modifies registry class
PID:1584

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3480

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4228

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:648

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4268

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1428

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3244

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1780

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1676

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4628

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2328

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5064

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3440

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1260

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3708

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4644

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1104

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4608

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2164

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4576

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
f41f42c322498af0591f396c59dd4304

SHA1
e1e5aa68d73d48bc5e743a34f6c0fa8960ff7514

SHA256
d8bd9a4a363ff2ac2dc887759ec6ba4215a4ce0925a8fb9c531573458ee4a31c

SHA512
2328a1b402b4fb0de9c451fb630eab58549129d3bcfb70b9834cfbd16065ebaadec006b309ea17ac182d34c53e01705cbc9e0196eb0cbd62600c866e79a1844f

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

Filesize
944B

MD5
6975516edb8086851bbf301fdb124972

SHA1
c1e669c0596e8f732d922083412de1edde019116

SHA256
6b0a5b814d1069345a3d3705e1ff397a3e8f7f76947af1eb35d30dda2a4119fb

SHA512
ff3fc12b941dfd7cf95d671f18dc6884a3b96559172c987b78fb09b77b9d02bafa80894c9272abbcd2318cfe620588d4a1acb2a6a0f214f98772433ffa3ae1d2

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_yoedsqmi.fv2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
44KB

MD5
c5582c5a0f4569e3bddd255f62081f3d

SHA1
6714c1ccf695d9fbd4ef3c0a1b67fb63b5f96487

SHA256
a71c8484a2a3d8f3cb4ec808e63123d5b2bc3df32a9dad5ade2786700687c1af

SHA512
33aa4d2dcd3f89bf061e6e7aaff3dcd7d3c863707f0e3814ee17d94b0856531897d9494de7eb2bcc2d2f05934abeb7f29cc8fd9e00f3bd382cc57b3652abdc51

Download Submit
C:\Users\Admin\Videos\Captures\desktop.ini

Filesize
190B

MD5
b0d27eaec71f1cd73b015f5ceeb15f9d

SHA1
62264f8b5c2f5034a1e4143df6e8c787165fbc2f

SHA256
86d9f822aeb989755fac82929e8db369b3f5f04117ef96fd76e3d5f920a501d2

SHA512
7b5c9783a0a14b600b156825639d24cbbc000f5066c48ce9fecc195255603fc55129aaaca336d7ce6ad4e941d5492b756562f2c7a1d151fcfc2dabac76f3946c

Download Submit
memory/1592-1-0x0000000000B60000-0x0000000000B72000-memory.dmp

Filesize
72KB

Download
memory/1592-2-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download
memory/1592-0-0x00007FF89F4D3000-0x00007FF89F4D5000-memory.dmp

Filesize
8KB

Download
memory/1592-57-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download
memory/2640-13-0x000001CF4B100000-0x000001CF4B122000-memory.dmp

Filesize
136KB

Download
memory/2640-18-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download
memory/2640-15-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download
memory/2640-14-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download
memory/2640-3-0x00007FF89F4D0000-0x00007FF89FF91000-memory.dmp

Filesize
10.8MB

Download