xworm | ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d

General

Target

XClient.exe
Size

73KB
MD5

29489bd7b40f8fe8e9f8b5eef2e7934b
SHA1

808421866619a366107a592dc4936e4a3fde404e
SHA256

ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d
SHA512

dcf6ab092887cb0313a9dd8b3c5222e9d22d18d8efd24151627dc3fad56e0f812576ed9434c21853c2cb730412eb76ffb1c18689368e0ab34ba3e6e80287b1d2
SSDEEP

1536:d3Qg91AbJLf+HOVvZ6T+bY+j/jDHIkMRytbaZORK0NLTBVhb8:agTA5JC+bYeLXAytbyORVLjhb8

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

192.168.29.241:22119

books-royalty.gl.at.ply.gg:22119

Attributes

Install_directory
%ProgramData%
install_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2332-1-0x00000000012A0000-0x00000000012B8000-memory.dmp	family_xworm
behavioral1/files/0x000d0000000131aa-9.dat	family_xworm
behavioral1/memory/2756-11-0x00000000009B0000-0x00000000009C8000-memory.dmp	family_xworm
behavioral1/memory/1704-14-0x00000000013D0000-0x00000000013E8000-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\Comet.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Comet.lnk	XClient.exe

Executes dropped EXE 3 IoCs

pid	Process
2756	Comet
1704	Comet
2232	Comet

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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\Comet = "C:\\ProgramData\\Comet"	XClient.exe

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

System Information Discovery
T1082

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
2376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2332	XClient.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2332	XClient.exe
Token: SeDebugPrivilege	2332	XClient.exe
Token: SeDebugPrivilege	2756	Comet
Token: SeDebugPrivilege	1704	Comet
Token: SeDebugPrivilege	2232	Comet

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2332	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2332 wrote to memory of 2376	2332	XClient.exe	31
PID 2332 wrote to memory of 2376	2332	XClient.exe	31
PID 2332 wrote to memory of 2376	2332	XClient.exe	31
PID 2900 wrote to memory of 2756	2900	taskeng.exe	34
PID 2900 wrote to memory of 2756	2900	taskeng.exe	34
PID 2900 wrote to memory of 2756	2900	taskeng.exe	34
PID 2900 wrote to memory of 1704	2900	taskeng.exe	35
PID 2900 wrote to memory of 1704	2900	taskeng.exe	35
PID 2900 wrote to memory of 1704	2900	taskeng.exe	35
PID 2900 wrote to memory of 2232	2900	taskeng.exe	37
PID 2900 wrote to memory of 2232	2900	taskeng.exe	37
PID 2900 wrote to memory of 2232	2900	taskeng.exe	37

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⤵
- 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:2332
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Comet" /tr "C:\ProgramData\Comet"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2376

C:\Windows\system32\taskeng.exe
taskeng.exe {3993BEEB-1E7B-4FC2-A2B9-F1DA1A2EFE77} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2900
- C:\ProgramData\Comet
  C:\ProgramData\Comet
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2756
- C:\ProgramData\Comet
  C:\ProgramData\Comet
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1704
- C:\ProgramData\Comet
  C:\ProgramData\Comet
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2232

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\Comet

Filesize
73KB

MD5
29489bd7b40f8fe8e9f8b5eef2e7934b

SHA1
808421866619a366107a592dc4936e4a3fde404e

SHA256
ee93b574812d8734c3b5eba01e7521a74010c8817f200781505b1002b789394d

SHA512
dcf6ab092887cb0313a9dd8b3c5222e9d22d18d8efd24151627dc3fad56e0f812576ed9434c21853c2cb730412eb76ffb1c18689368e0ab34ba3e6e80287b1d2

Download Submit
memory/1704-14-0x00000000013D0000-0x00000000013E8000-memory.dmp

Filesize
96KB

Download
memory/2332-0-0x000007FEF6723000-0x000007FEF6724000-memory.dmp

Filesize
4KB

Download
memory/2332-1-0x00000000012A0000-0x00000000012B8000-memory.dmp

Filesize
96KB

Download
memory/2332-5-0x000007FEF6720000-0x000007FEF710C000-memory.dmp

Filesize
9.9MB

Download
memory/2332-6-0x000007FEF6723000-0x000007FEF6724000-memory.dmp

Filesize
4KB

Download
memory/2332-7-0x000007FEF6720000-0x000007FEF710C000-memory.dmp

Filesize
9.9MB

Download
memory/2756-11-0x00000000009B0000-0x00000000009C8000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads