xworm | 545403ae8941712ac4f021d5867ac8df35a554d5754192c54da66f7b2a2d4e5f

Analysis

max time kernel
145s
max time network
126s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:12

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General

Target

67a62cb441400a13757721a9f7d8c6ba.exe
Size

63KB
MD5

67a62cb441400a13757721a9f7d8c6ba
SHA1

1e42025629579d101861b1b686beb475c48a8636
SHA256

2f7457a67bc6130046e72c2ab095d3744a410e4b04ac3315197b8b8849fc4e22
SHA512

87d3b0187a482638b15e8291793f72d8019bb952239dc749a3a79c9c11186d8a93cb18d0c7f4b9b582c2dde0a32c9173198082dd3c97589222fa4a6ba093ce54
SSDEEP

1536:V50NqnY2ITdR7iA72cWD+bO3JWB5sViBgOi+X:Vi8Y5RFiA7+D+bOcA9OiQ

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:14012

Attributes

Install_directory
%Userprofile%
install_file
unbranded.exe

Signatures

Detect Xworm Payload 5 IoCs

resource	yara_rule
behavioral1/memory/2396-1-0x0000000000270000-0x0000000000286000-memory.dmp	family_xworm
behavioral1/files/0x00050000000194f2-9.dat	family_xworm
behavioral1/memory/2784-11-0x00000000012D0000-0x00000000012E6000-memory.dmp	family_xworm
behavioral1/memory/764-15-0x00000000002A0000-0x00000000002B6000-memory.dmp	family_xworm
behavioral1/memory/2992-17-0x00000000011E0000-0x00000000011F6000-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\unbranded.lnk	67a62cb441400a13757721a9f7d8c6ba.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\unbranded.lnk	67a62cb441400a13757721a9f7d8c6ba.exe

Executes dropped EXE 3 IoCs

pid	Process
2784	unbranded.exe
764	unbranded.exe
2992	unbranded.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\unbranded = "C:\\Users\\Admin\\unbranded.exe"	67a62cb441400a13757721a9f7d8c6ba.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
2148	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2396	67a62cb441400a13757721a9f7d8c6ba.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2396	67a62cb441400a13757721a9f7d8c6ba.exe
Token: SeDebugPrivilege	2784	unbranded.exe
Token: SeDebugPrivilege	764	unbranded.exe
Token: SeDebugPrivilege	2992	unbranded.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2396	67a62cb441400a13757721a9f7d8c6ba.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2148	2396	67a62cb441400a13757721a9f7d8c6ba.exe	31
PID 2396 wrote to memory of 2148	2396	67a62cb441400a13757721a9f7d8c6ba.exe	31
PID 2396 wrote to memory of 2148	2396	67a62cb441400a13757721a9f7d8c6ba.exe	31
PID 2696 wrote to memory of 2784	2696	taskeng.exe	34
PID 2696 wrote to memory of 2784	2696	taskeng.exe	34
PID 2696 wrote to memory of 2784	2696	taskeng.exe	34
PID 2696 wrote to memory of 764	2696	taskeng.exe	35
PID 2696 wrote to memory of 764	2696	taskeng.exe	35
PID 2696 wrote to memory of 764	2696	taskeng.exe	35
PID 2696 wrote to memory of 2992	2696	taskeng.exe	36
PID 2696 wrote to memory of 2992	2696	taskeng.exe	36
PID 2696 wrote to memory of 2992	2696	taskeng.exe	36

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\67a62cb441400a13757721a9f7d8c6ba.exe
"C:\Users\Admin\AppData\Local\Temp\67a62cb441400a13757721a9f7d8c6ba.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:2396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "unbranded" /tr "C:\Users\Admin\unbranded.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2148

C:\Windows\system32\taskeng.exe
taskeng.exe {CC9B396A-5F63-4EDA-A0BE-36DA550ABB53} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Users\Admin\unbranded.exe
  C:\Users\Admin\unbranded.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2784
- C:\Users\Admin\unbranded.exe
  C:\Users\Admin\unbranded.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:764
- C:\Users\Admin\unbranded.exe
  C:\Users\Admin\unbranded.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2992

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

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\unbranded.exe

Filesize
63KB

MD5
67a62cb441400a13757721a9f7d8c6ba

SHA1
1e42025629579d101861b1b686beb475c48a8636

SHA256
2f7457a67bc6130046e72c2ab095d3744a410e4b04ac3315197b8b8849fc4e22

SHA512
87d3b0187a482638b15e8291793f72d8019bb952239dc749a3a79c9c11186d8a93cb18d0c7f4b9b582c2dde0a32c9173198082dd3c97589222fa4a6ba093ce54

Download Submit
memory/764-15-0x00000000002A0000-0x00000000002B6000-memory.dmp

Filesize
88KB

Download
memory/2396-0-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp

Filesize
4KB

Download
memory/2396-1-0x0000000000270000-0x0000000000286000-memory.dmp

Filesize
88KB

Download
memory/2396-6-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp

Filesize
9.9MB

Download
memory/2396-7-0x000007FEF58D3000-0x000007FEF58D4000-memory.dmp

Filesize
4KB

Download
memory/2396-12-0x000007FEF58D0000-0x000007FEF62BC000-memory.dmp

Filesize
9.9MB

Download
memory/2784-11-0x00000000012D0000-0x00000000012E6000-memory.dmp

Filesize
88KB

Download
memory/2992-17-0x00000000011E0000-0x00000000011F6000-memory.dmp

Filesize
88KB

Download