xworm | 97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64

General

Target

TOTAL RFQ.bat.exe
Size

653KB
MD5

2f70673f42fa875f6086be3f08d0228d
SHA1

9d669bedf14a71f846ffa4fd2026f8d956daa57e
SHA256

97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64
SHA512

3dfe6da9f87e82f59addc56aaad56f25305aa2f1ea4a579b9829dd4fffa4f89a93d74f5311e4194bf4c42b035394cf2e3fd5480b0237d24076c33c60603b9dc6
SSDEEP

12288:8qFKqcoUvEmbGqbxoVOxEKEXQ8MUzNkFa21YQ1G8aJqjZ0uqISt:8q0qconmNKYq5zZNkk2qQ8jJq10uqIg

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

154.216.20.132:2233

Mutex

NFxnDoJ61PAf6tB3

Attributes

Install_directory
%AppData%
install_file
XClient.exe

aes.plain

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2864-24-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-23-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-20-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-18-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-26-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2892	powershell.exe

Drops startup file 2 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
2864	TOTAL RFQ.bat.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1964 set thread context of 2864	1964	TOTAL RFQ.bat.exe	35

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TOTAL RFQ.bat.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	TOTAL RFQ.bat.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
2840	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2892	powershell.exe
2864	TOTAL RFQ.bat.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2864	TOTAL RFQ.bat.exe
Token: SeDebugPrivilege	2892	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	TOTAL RFQ.bat.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 1964 wrote to memory of 2892	1964	TOTAL RFQ.bat.exe	31
PID 1964 wrote to memory of 2892	1964	TOTAL RFQ.bat.exe	31
PID 1964 wrote to memory of 2892	1964	TOTAL RFQ.bat.exe	31
PID 1964 wrote to memory of 2892	1964	TOTAL RFQ.bat.exe	31
PID 1964 wrote to memory of 2840	1964	TOTAL RFQ.bat.exe	32
PID 1964 wrote to memory of 2840	1964	TOTAL RFQ.bat.exe	32
PID 1964 wrote to memory of 2840	1964	TOTAL RFQ.bat.exe	32
PID 1964 wrote to memory of 2840	1964	TOTAL RFQ.bat.exe	32
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35
PID 1964 wrote to memory of 2864	1964	TOTAL RFQ.bat.exe	35

C:\Users\Admin\AppData\Local\Temp\TOTAL RFQ.bat.exe
"C:\Users\Admin\AppData\Local\Temp\TOTAL RFQ.bat.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1964
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\FFXkKmgOJiIrD.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2892
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FFXkKmgOJiIrD" /XML "C:\Users\Admin\AppData\Local\Temp\tmpE7DF.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2840
- C:\Users\Admin\AppData\Local\Temp\TOTAL RFQ.bat.exe
  "C:\Users\Admin\AppData\Local\Temp\TOTAL RFQ.bat.exe"
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:2864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpE7DF.tmp

Filesize
1KB

MD5
3f5dd210fb4ba1241bfedb52fdf52736

SHA1
ab5c925012322404e6933f926179766bb05a4a2d

SHA256
ae65f41231b821356700087b3e46c8b88d7ad27647d0617cfa5e2177b27e77be

SHA512
9595cb1d23058359429cbc49c2d30c9a85d13c00830d25be6c3e6398a72356968a487c95c0309236d9fd0b2c20742fde9532a942fb70786ffaf25375e169f0da

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

Filesize
653KB

MD5
2f70673f42fa875f6086be3f08d0228d

SHA1
9d669bedf14a71f846ffa4fd2026f8d956daa57e

SHA256
97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64

SHA512
3dfe6da9f87e82f59addc56aaad56f25305aa2f1ea4a579b9829dd4fffa4f89a93d74f5311e4194bf4c42b035394cf2e3fd5480b0237d24076c33c60603b9dc6

Download Submit
memory/1964-27-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1964-1-0x0000000000330000-0x00000000003D8000-memory.dmp

Filesize
672KB

Download
memory/1964-2-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1964-3-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

Filesize
4KB

Download
memory/1964-4-0x0000000073F60000-0x000000007464E000-memory.dmp

Filesize
6.9MB

Download
memory/1964-5-0x00000000006E0000-0x00000000006FC000-memory.dmp

Filesize
112KB

Download
memory/1964-6-0x0000000000520000-0x0000000000572000-memory.dmp

Filesize
328KB

Download
memory/1964-0-0x0000000073F6E000-0x0000000073F6F000-memory.dmp

Filesize
4KB

Download
memory/2864-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-20-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-16-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-26-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-23-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-24-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads