xworm | 118d236485ff8b58d7ab372d55f083fa7b6db08ad0a3655d4e1d871d76c9d2dd

General

Target

XClient.exe
Size

39KB
MD5

e714edb3f5402f430bdab1cca71a4715
SHA1

743d06c2fe1a13838e37ad345e8a23507a162c7f
SHA256

118d236485ff8b58d7ab372d55f083fa7b6db08ad0a3655d4e1d871d76c9d2dd
SHA512

89b93fd141fd2703bbc60831f6b16161050bd1ef56f805c71fb22b2a3c1446694333cbb8389d747c72f67606724c17746734e063d10e97bb123af87aca6940e0
SSDEEP

768:xG7+qmT8ztyh6pwDYvCL2v6hCuuJf27j1fFWPG9/p6OOwh5jObH:cfmT8ztyh6pwDnKwCuuJf4Fv9/p6OOwo

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

19.ip.gl.ply.gg:49487

Mutex

oMmNpHSdiI3wJln5

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/3400-1-0x0000000000B70000-0x0000000000B80000-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

532 powershell.exe
3812 powershell.exe
4436 powershell.exe
4012 powershell.exe

pid	process
532	powershell.exe
3812	powershell.exe
4436	powershell.exe
4012	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

Processes:

XClient.exe

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

Processes:

XClient.exe

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

Executes dropped EXE 2 IoCs

Processes:

XClient.exeXClient.exe

pid process

696 XClient.exe
2476 XClient.exe

pid	process
696	XClient.exe
2476	XClient.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

XClient.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.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

Processes:

schtasks.exe

pid process

1036 schtasks.exe

pid	process
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeXClient.exe

pid	process
4012	powershell.exe
4012	powershell.exe
532	powershell.exe
532	powershell.exe
3812	powershell.exe
3812	powershell.exe
4436	powershell.exe
4436	powershell.exe
3400	XClient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

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

description	pid	process
Token: SeDebugPrivilege	3400	XClient.exe
Token: SeDebugPrivilege	4012	powershell.exe
Token: SeDebugPrivilege	532	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	4436	powershell.exe
Token: SeDebugPrivilege	3400	XClient.exe
Token: SeDebugPrivilege	696	XClient.exe
Token: SeDebugPrivilege	2476	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

3400 XClient.exe

pid	process
3400	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 3400 wrote to memory of 4012	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 4012	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 532	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 532	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 3812	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 3812	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 4436	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 4436	3400	XClient.exe	powershell.exe
PID 3400 wrote to memory of 1036	3400	XClient.exe	schtasks.exe
PID 3400 wrote to memory of 1036	3400	XClient.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\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:3400

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:4012

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:532

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:3812

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:4436

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:1036

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:696

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2476

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

Query Registry

2

T1012

System Information Discovery

2

T1082

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
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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

MD5
be67063c62a242565760a02a642a9f02

SHA1
d1043a892b44d6676f71b568f578fff947266a19

SHA256
56f158298dc5f781d6636a0b15d040f9cffb1d46cd11079aa40a26b662217f48

SHA512
90d2cbd882ff8043412ad25e74df0cf6b71d6f3fbdfa6f1efa0efc8eed86a925606c7d2e967f112a34d3f0e04f01a396898508571400dcf7e6fd69e78f406638

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

MD5
c08aea9c78561a5f00398a723fdf2925

SHA1
2c880cbb5d02169a86bb9517ce2a0184cb177c6e

SHA256
63d2688b92da4d1bb69980b7998b9be1595dd9e53951434a9414d019c4f825a7

SHA512
d30db2f55bbda7102ffe90520d233355633313dcc77cdb69a26fdbb56e59dd41793def23d69dc5dc3f94c5bd41d3c26b3628886fd2edbed2df0b332e9a21f95c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rcxe5cal.30s.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\XClient.exe
Filesize
39KB

MD5
e714edb3f5402f430bdab1cca71a4715

SHA1
743d06c2fe1a13838e37ad345e8a23507a162c7f

SHA256
118d236485ff8b58d7ab372d55f083fa7b6db08ad0a3655d4e1d871d76c9d2dd

SHA512
89b93fd141fd2703bbc60831f6b16161050bd1ef56f805c71fb22b2a3c1446694333cbb8389d747c72f67606724c17746734e063d10e97bb123af87aca6940e0

Download Submit
memory/3400-60-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/3400-59-0x000000001CBE0000-0x000000001CBEC000-memory.dmp

Filesize
48KB

Download
memory/3400-58-0x00007FFE80DA3000-0x00007FFE80DA5000-memory.dmp

Filesize
8KB

Download
memory/3400-0-0x00007FFE80DA3000-0x00007FFE80DA5000-memory.dmp

Filesize
8KB

Download
memory/3400-57-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/3400-1-0x0000000000B70000-0x0000000000B80000-memory.dmp

Filesize
64KB

Download
memory/4012-12-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/4012-18-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/4012-15-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/4012-14-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/4012-13-0x00007FFE80DA0000-0x00007FFE81861000-memory.dmp

Filesize
10.8MB

Download
memory/4012-2-0x00000224B3EC0000-0x00000224B3EE2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads