xworm | b5a4b1a445b993f44e351821b76c5bdc156c2f2609c6f6fbfc34a731e7d9937f

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
05/03/2025, 12:57

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General

Target

QH8DN3K9X.exe
Size

518KB
MD5

8fd78d3f0ffc585c0946e347281caa9d
SHA1

1cd95c47a876b367a96b91575ce876f933659144
SHA256

b5a4b1a445b993f44e351821b76c5bdc156c2f2609c6f6fbfc34a731e7d9937f
SHA512

cc692611f688cf60a2d2f396e18e9ab7579832f127084a4c596b93550ecd913a952feff7c52f80f29e8d85217beb21659b5b644a8ea8cb653bbc74f0bb6bf27c
SSDEEP

6144:QC5gmYW9mPMQ/ay6H5hcQMFHYQdH2RYRtO7aIRvHLfaf97rUHZNTrtiZp6AH:jgtPx/uZhaHY4H2i2RvrfY0H7tc

Score

10^/10

xworm discovery persistence rat trojan

Malware Config

Extracted

Family

xworm

176.65.144.119:7000

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/3020-22-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/3020-24-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/3020-27-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/3020-28-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm
behavioral1/memory/3020-29-0x0000000000400000-0x0000000000416000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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

Executes dropped EXE 1 IoCs

pid	Process
2992	vcxxc.exe

Loads dropped DLL 3 IoCs

pid	Process
2752	cmd.exe
2752	cmd.exe
3020	InstallUtil.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-1-5-21-2039016743-699959520-214465309-1000\Software\Microsoft\Windows\CurrentVersion\Run\xcxz = "C:\\Users\\Admin\\AppData\\Roaming\\vcxxc.exe"	reg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2992 set thread context of 3020	2992	vcxxc.exe	40

System Location Discovery: System Language Discovery 1 TTPs 9 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	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vcxxc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	QH8DN3K9X.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 5 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2900	cmd.exe
2728	PING.EXE
2752	cmd.exe
2736	PING.EXE
2672	PING.EXE

Runs ping.exe 1 TTPs 3 IoCs

Remote System Discovery

T1018

pid	Process
2736	PING.EXE
2672	PING.EXE
2728	PING.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
3020	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
2712	QH8DN3K9X.exe
2712	QH8DN3K9X.exe
2712	QH8DN3K9X.exe
2712	QH8DN3K9X.exe
2712	QH8DN3K9X.exe
2712	QH8DN3K9X.exe
2992	vcxxc.exe
2992	vcxxc.exe
2992	vcxxc.exe
3020	InstallUtil.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2712	QH8DN3K9X.exe
Token: SeDebugPrivilege	2992	vcxxc.exe
Token: SeDebugPrivilege	3020	InstallUtil.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3020	InstallUtil.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 2712 wrote to memory of 2900	2712	QH8DN3K9X.exe	31
PID 2712 wrote to memory of 2900	2712	QH8DN3K9X.exe	31
PID 2712 wrote to memory of 2900	2712	QH8DN3K9X.exe	31
PID 2712 wrote to memory of 2900	2712	QH8DN3K9X.exe	31
PID 2900 wrote to memory of 2728	2900	cmd.exe	33
PID 2900 wrote to memory of 2728	2900	cmd.exe	33
PID 2900 wrote to memory of 2728	2900	cmd.exe	33
PID 2900 wrote to memory of 2728	2900	cmd.exe	33
PID 2712 wrote to memory of 2752	2712	QH8DN3K9X.exe	34
PID 2712 wrote to memory of 2752	2712	QH8DN3K9X.exe	34
PID 2712 wrote to memory of 2752	2712	QH8DN3K9X.exe	34
PID 2712 wrote to memory of 2752	2712	QH8DN3K9X.exe	34
PID 2752 wrote to memory of 2736	2752	cmd.exe	36
PID 2752 wrote to memory of 2736	2752	cmd.exe	36
PID 2752 wrote to memory of 2736	2752	cmd.exe	36
PID 2752 wrote to memory of 2736	2752	cmd.exe	36
PID 2900 wrote to memory of 2732	2900	cmd.exe	37
PID 2900 wrote to memory of 2732	2900	cmd.exe	37
PID 2900 wrote to memory of 2732	2900	cmd.exe	37
PID 2900 wrote to memory of 2732	2900	cmd.exe	37
PID 2752 wrote to memory of 2672	2752	cmd.exe	38
PID 2752 wrote to memory of 2672	2752	cmd.exe	38
PID 2752 wrote to memory of 2672	2752	cmd.exe	38
PID 2752 wrote to memory of 2672	2752	cmd.exe	38
PID 2752 wrote to memory of 2992	2752	cmd.exe	39
PID 2752 wrote to memory of 2992	2752	cmd.exe	39
PID 2752 wrote to memory of 2992	2752	cmd.exe	39
PID 2752 wrote to memory of 2992	2752	cmd.exe	39
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40
PID 2992 wrote to memory of 3020	2992	vcxxc.exe	40

C:\Users\Admin\AppData\Local\Temp\QH8DN3K9X.exe
"C:\Users\Admin\AppData\Local\Temp\QH8DN3K9X.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2712
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 9 > nul && REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "xcxz" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\vcxxc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2900
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 9
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2728
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKCU\Software\Microsoft\Windows\CurrentVersion\Run" /f /v "xcxz" /t REG_SZ /d "C:\Users\Admin\AppData\Roaming\vcxxc.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2732
- C:\Windows\SysWOW64\cmd.exe
  "cmd" /c ping 127.0.0.1 -n 15 > nul && copy "C:\Users\Admin\AppData\Local\Temp\QH8DN3K9X.exe" "C:\Users\Admin\AppData\Roaming\vcxxc.exe" && ping 127.0.0.1 -n 15 > nul && "C:\Users\Admin\AppData\Roaming\vcxxc.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2752
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 15
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2736
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1 -n 15
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2672
- - C:\Users\Admin\AppData\Roaming\vcxxc.exe
    "C:\Users\Admin\AppData\Roaming\vcxxc.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
      4⤵
      Drops startup file
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious behavior: AddClipboardFormatListener
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:3020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Remote System Discovery

T1018

System Location Discovery

T1614

System Language Discovery

T1614.001

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

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

Filesize
518KB

MD5
8fd78d3f0ffc585c0946e347281caa9d

SHA1
1cd95c47a876b367a96b91575ce876f933659144

SHA256
b5a4b1a445b993f44e351821b76c5bdc156c2f2609c6f6fbfc34a731e7d9937f

SHA512
cc692611f688cf60a2d2f396e18e9ab7579832f127084a4c596b93550ecd913a952feff7c52f80f29e8d85217beb21659b5b644a8ea8cb653bbc74f0bb6bf27c

Download Submit
memory/2712-0-0x0000000073F8E000-0x0000000073F8F000-memory.dmp

Filesize
4KB

Download
memory/2712-1-0x0000000001180000-0x0000000001208000-memory.dmp

Filesize
544KB

Download
memory/2712-2-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2712-3-0x0000000000370000-0x0000000000396000-memory.dmp

Filesize
152KB

Download
memory/2712-4-0x0000000073F80000-0x000000007466E000-memory.dmp

Filesize
6.9MB

Download
memory/2992-17-0x0000000000610000-0x0000000000616000-memory.dmp

Filesize
24KB

Download
memory/2992-16-0x0000000000A00000-0x0000000000A1A000-memory.dmp

Filesize
104KB

Download
memory/2992-15-0x0000000000EF0000-0x0000000000F78000-memory.dmp

Filesize
544KB

Download
memory/3020-18-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-20-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-22-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-24-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-26-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/3020-27-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-28-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/3020-29-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download