xworm | 3b280af17ea33850c3652f64436f4f02760afe4f0ba9bb9d63596dc942cac882

General

Target

kiddions.exe
Size

77KB
MD5

66457c38d36822b43c72333837268fce
SHA1

45279743be3613147f741715e620fe9ee9136eb6
SHA256

3b280af17ea33850c3652f64436f4f02760afe4f0ba9bb9d63596dc942cac882
SHA512

bcc68460de0100d48806b5092dfcca1b69137f976c727f38e23f375b9c9d2c64f7e641c7e15005957bc975219cbba4fbb695617a3dbe8ea1e5da95f3dd2351ca
SSDEEP

1536:eYFcsoTxxsSq9H0RsqhLJxfRjj+wiGbgZqBQGaYu6nObbHh/GT:er9+URNhbRjy3GbgIpOXHhuT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:45129

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1656-1-0x00000000006C0000-0x00000000006DA000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\XClient.exe	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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

5112 powershell.exe
4116 powershell.exe
2228 powershell.exe
2132 powershell.exe

Drops startup file 2 IoCs

Processes:

kiddions.exe

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

Executes dropped EXE 18 IoCs

Processes:

XClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exe

pid	process
3640	XClient.exe
3472	XClient.exe
4652	XClient.exe
1756	XClient.exe
1640	XClient.exe
2596	XClient.exe
4856	XClient.exe
4624	XClient.exe
3352	XClient.exe
4532	XClient.exe
2256	XClient.exe
4312	XClient.exe
3656	XClient.exe
2532	XClient.exe
2760	XClient.exe
484	XClient.exe
2648	XClient.exe
1160	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

kiddions.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1672260578-815027929-964132517-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	kiddions.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.

Processes:

flow ioc

1 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

Processes:

schtasks.exe

pid process

748 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

kiddions.exe

pid process

1656 kiddions.exe

flow	ioc
1	ip-api.com

pid	process
748	schtasks.exe

pid	process
1656	kiddions.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exekiddions.exe

pid	process
5112	powershell.exe
5112	powershell.exe
4116	powershell.exe
4116	powershell.exe
2228	powershell.exe
2228	powershell.exe
2132	powershell.exe
2132	powershell.exe
1656	kiddions.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

Processes:

kiddions.exepowershell.exepowershell.exepowershell.exepowershell.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exeXClient.exe

description	pid	process
Token: SeDebugPrivilege	1656	kiddions.exe
Token: SeDebugPrivilege	5112	powershell.exe
Token: SeDebugPrivilege	4116	powershell.exe
Token: SeDebugPrivilege	2228	powershell.exe
Token: SeDebugPrivilege	2132	powershell.exe
Token: SeDebugPrivilege	1656	kiddions.exe
Token: SeDebugPrivilege	3640	XClient.exe
Token: SeDebugPrivilege	3472	XClient.exe
Token: SeDebugPrivilege	4652	XClient.exe
Token: SeDebugPrivilege	1756	XClient.exe
Token: SeDebugPrivilege	1640	XClient.exe
Token: SeDebugPrivilege	2596	XClient.exe
Token: SeDebugPrivilege	4856	XClient.exe
Token: SeDebugPrivilege	4624	XClient.exe
Token: SeDebugPrivilege	3352	XClient.exe
Token: SeDebugPrivilege	4532	XClient.exe
Token: SeDebugPrivilege	2256	XClient.exe
Token: SeDebugPrivilege	4312	XClient.exe
Token: SeDebugPrivilege	3656	XClient.exe
Token: SeDebugPrivilege	2532	XClient.exe
Token: SeDebugPrivilege	2760	XClient.exe
Token: SeDebugPrivilege	484	XClient.exe
Token: SeDebugPrivilege	2648	XClient.exe
Token: SeDebugPrivilege	1160	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

kiddions.exe

pid process

1656 kiddions.exe

pid	process
1656	kiddions.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

kiddions.exe

description	pid	process	target process
PID 1656 wrote to memory of 5112	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 5112	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 4116	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 4116	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 2228	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 2228	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 2132	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 2132	1656	kiddions.exe	powershell.exe
PID 1656 wrote to memory of 748	1656	kiddions.exe	schtasks.exe
PID 1656 wrote to memory of 748	1656	kiddions.exe	schtasks.exe

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\kiddions.exe
"C:\Users\Admin\AppData\Local\Temp\kiddions.exe"
1⤵
- 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:1656

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\kiddions.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:5112

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'kiddions.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4116

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:2228

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:2132

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⤵
- Creates scheduled task(s)
PID:748

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3640

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3472

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4652

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1756

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1640

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2596

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4856

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4624

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3352

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4532

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2256

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4312

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3656

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2532

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2760

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:484

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2648

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1160

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

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

System Information Discovery

1

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\XClient.exe.log
Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
34e3230cb2131270db1af79fb3d57752

SHA1
21434dd7cf3c4624226b89f404fd7982825f8ac6

SHA256
0f162f27548a84db1638bcf46d03661b5bcb3032e765fafdb597cc107639ba39

SHA512
3756cb01e82dbda681b562eae74d0b8ef8b3787b126119a51a92c51a78204a7805b9bdd60c00c50a3be23b843e78bb153b656540767069f739ce421b9bc02335

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
53f55f8c3d66463c79213e9f1f9207a6

SHA1
b398f2281217a4d9c63a833d08bedcdd02a64e1b

SHA256
180b74bfcf6383118baf7980d457136e454058d5842702348dc604e389c37dd8

SHA512
ba5493743054950a5268de2a6d83007784c4405ae17db2e49768f1ddf26ddfc75d43667c9a7c28a8b25fee303132480b9a97b12f428a0e26db3be6d9f9b0886e

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gyg1fcgr.5c4.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
77KB

MD5
66457c38d36822b43c72333837268fce

SHA1
45279743be3613147f741715e620fe9ee9136eb6

SHA256
3b280af17ea33850c3652f64436f4f02760afe4f0ba9bb9d63596dc942cac882

SHA512
bcc68460de0100d48806b5092dfcca1b69137f976c727f38e23f375b9c9d2c64f7e641c7e15005957bc975219cbba4fbb695617a3dbe8ea1e5da95f3dd2351ca

Download Submit
memory/1656-0-0x00007FFA20DB3000-0x00007FFA20DB5000-memory.dmp

Filesize
8KB

Download
memory/1656-2-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/1656-57-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/1656-1-0x00000000006C0000-0x00000000006DA000-memory.dmp

Filesize
104KB

Download
memory/5112-13-0x000001ED3EE40000-0x000001ED3EE62000-memory.dmp

Filesize
136KB

Download
memory/5112-14-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/5112-15-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/5112-16-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/5112-19-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/5112-9-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download
memory/5112-3-0x00007FFA20DB0000-0x00007FFA21872000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads