xworm | 97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64

General

Target

97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.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/2756-20-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2756-17-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2756-15-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2756-21-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2756-24-0x0000000000400000-0x0000000000410000-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
2360	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	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe

Loads dropped DLL 1 IoCs

pid	Process
2756	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2328 set thread context of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34

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	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.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
2564	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2360	powershell.exe
2756	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2756	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe
Token: SeDebugPrivilege	2360	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2756	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2360	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	30
PID 2328 wrote to memory of 2360	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	30
PID 2328 wrote to memory of 2360	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	30
PID 2328 wrote to memory of 2360	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	30
PID 2328 wrote to memory of 2564	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	31
PID 2328 wrote to memory of 2564	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	31
PID 2328 wrote to memory of 2564	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	31
PID 2328 wrote to memory of 2564	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	31
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34
PID 2328 wrote to memory of 2756	2328	97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe	34

C:\Users\Admin\AppData\Local\Temp\97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe
"C:\Users\Admin\AppData\Local\Temp\97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2328
- 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:2360
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\FFXkKmgOJiIrD" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8A36.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2564
- C:\Users\Admin\AppData\Local\Temp\97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.exe
  "C:\Users\Admin\AppData\Local\Temp\97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64.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:2756

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\tmp8A36.tmp

Filesize
1KB

MD5
f35985629f359883d4b8f166c9a06509

SHA1
fe08ea7d7793ce61018078b4692c8f858a7926f0

SHA256
c42e1e1a213ac475cd3ca7edc6c5245c09a3271faf10e273bf386c331bf34d72

SHA512
3c4a4e21cbb92d4bf87533e0b0789782e3acbfc51f16675561e510d4f2ebc4831e27c848766b8fb87bfe2ad7a2f074a51ca93205e4efd727f8857b6e1cc60e30

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

Filesize
653KB

MD5
2f70673f42fa875f6086be3f08d0228d

SHA1
9d669bedf14a71f846ffa4fd2026f8d956daa57e

SHA256
97ef8e5f7cce1ba7216aae7b44778fee1140371a68681b84b886bfbffb1e9e64

SHA512
3dfe6da9f87e82f59addc56aaad56f25305aa2f1ea4a579b9829dd4fffa4f89a93d74f5311e4194bf4c42b035394cf2e3fd5480b0237d24076c33c60603b9dc6

Download Submit
memory/2328-23-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-1-0x0000000000990000-0x0000000000A38000-memory.dmp

Filesize
672KB

Download
memory/2328-2-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-3-0x0000000073F50000-0x000000007463E000-memory.dmp

Filesize
6.9MB

Download
memory/2328-4-0x0000000000A40000-0x0000000000A5C000-memory.dmp

Filesize
112KB

Download
memory/2328-5-0x00000000008E0000-0x0000000000932000-memory.dmp

Filesize
328KB

Download
memory/2328-0-0x0000000073F5E000-0x0000000073F5F000-memory.dmp

Filesize
4KB

Download
memory/2756-20-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-17-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-19-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2756-21-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-24-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2756-11-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads