xworm | 456ba538a6fa8751897a9a76aa88d69c0c01011af42a1a8f331204978424f456

Analysis

max time kernel
147s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20240426-en
resource tags

arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system
submitted
04-06-2024 12:23

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General

Target

XWorm V5.4/Icons/XClient.exe
Size

162KB
MD5

f5f1d328ac2502686cd9a12b936daa75
SHA1

d8a6c77022d413ddadda8036e41ba803b0664efd
SHA256

2c177b01f77136c9f18b106a80d9a8cbe95e8232eeeac1df7061eb096cdd4d56
SHA512

0c215316df54bd82a7997f3a841c83f72751efa1eadb6c7d07ca624a0a59c8217dd54e4a3de498b8d1b23cfcb99a4179163545bd2720cd3db1d6610f521dfb27
SSDEEP

3072:TZ63JEGojxvVMnbO6uhzfrOxGkBz65/M6If+3Js+3JFkKeTnF:VUJVC9qbGRexBt25

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral14/memory/4192-1-0x0000000000260000-0x000000000028E000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs
Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.
execution

PowerShell
T1059.001

Processes:

powershell.exepowershell.exe

pid process

4592 powershell.exe
2540 powershell.exe

pid	process
4592	powershell.exe
2540	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-1-5-21-3571316656-3665257725-2415531812-1000\Control Panel\International\Geo\Nation	XClient.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

16 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exeXClient.exe

pid process

4592 powershell.exe
4592 powershell.exe
2540 powershell.exe
2540 powershell.exe
4192 XClient.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

XClient.exepowershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 4192 XClient.exe
Token: SeDebugPrivilege 4592 powershell.exe
Token: SeDebugPrivilege 2540 powershell.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

XClient.exe

pid process

4192 XClient.exe

flow	ioc
16	ip-api.com

pid	process
4592	powershell.exe
4592	powershell.exe
2540	powershell.exe
2540	powershell.exe
4192	XClient.exe

description	pid	process
Token: SeDebugPrivilege	4192	XClient.exe
Token: SeDebugPrivilege	4592	powershell.exe
Token: SeDebugPrivilege	2540	powershell.exe

pid	process
4192	XClient.exe

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

XClient.exe

description	pid	process	target process
PID 4192 wrote to memory of 4592	4192	XClient.exe	powershell.exe
PID 4192 wrote to memory of 4592	4192	XClient.exe	powershell.exe
PID 4192 wrote to memory of 2540	4192	XClient.exe	powershell.exe
PID 4192 wrote to memory of 2540	4192	XClient.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\XWorm V5.4\Icons\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XWorm V5.4\Icons\XClient.exe"
1⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4192

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\XWorm V5.4\Icons\XClient.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4592

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:2540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

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\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\Temp\__PSScriptPolicyTest_13zcrzq1.dyf.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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memory/4192-0-0x00007FFA8F233000-0x00007FFA8F235000-memory.dmp

Filesize
8KB

Download
memory/4192-2-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4192-1-0x0000000000260000-0x000000000028E000-memory.dmp

Filesize
184KB

Download
memory/4192-31-0x00007FFA8F233000-0x00007FFA8F235000-memory.dmp

Filesize
8KB

Download
memory/4192-32-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4592-3-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4592-4-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4592-10-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download
memory/4592-12-0x00000207FBEB0000-0x00000207FBED2000-memory.dmp

Filesize
136KB

Download
memory/4592-18-0x00007FFA8F230000-0x00007FFA8FCF1000-memory.dmp

Filesize
10.8MB

Download