xworm | 3cca5bd72a29bcd3621db5307142564ab6d2ecfc909d896d39f356ef3e2d37c0

Resubmissions

13-01-2025 01:12

250113-bkxc8sykcv 10

11-01-2025 02:59

250111-dgsxratjfl 10

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
11-01-2025 02:59

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General

Target

Xworm-5.6/._cache_svchost.exe
Size

40KB
MD5

5390ed74a0c3c880fdd6d0e2d135bfe1
SHA1

0dbe542e0fe98e17e877f2e5d1dd6dc252943f41
SHA256

48ca5393cc5f72125e9677a9833e86b4bd65aa4a9c167c6171a2d38359b100d9
SHA512

54699e0c3dba1d2df00aca934264fbf728bc2185024d577f3ce2325a9a04467e5b52d15e5f3a5689fe839afa48175765d55f941879076de8012f4bb84fab9cd7
SSDEEP

768:MWwYyt6YWwAIxBWPA6Z9tF5Pa9GFOwhE332hiF0:+Y4R3AImPA+vFY9GFOwWme0

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

45.141.26.134:7000

Mutex

CcojtGUool4u0Nw2

Attributes

Install_directory
%Userprofile%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/3052-1-0x00000000000D0000-0x00000000000E0000-memory.dmp	family_xworm
behavioral1/files/0x0007000000012116-7.dat	family_xworm
behavioral1/memory/2632-9-0x0000000000D70000-0x0000000000D80000-memory.dmp	family_xworm
behavioral1/memory/1508-12-0x0000000000210000-0x0000000000220000-memory.dmp	family_xworm

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

Executes dropped EXE 3 IoCs

pid	Process
2632	svchost.exe
2180	svchost.exe
1508	svchost.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-1-5-21-3290804112-2823094203-3137964600-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\svchost.exe"	._cache_svchost.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

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
2740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
3052	._cache_svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	._cache_svchost.exe
Token: SeDebugPrivilege	3052	._cache_svchost.exe
Token: SeDebugPrivilege	2632	svchost.exe
Token: SeDebugPrivilege	2180	svchost.exe
Token: SeDebugPrivilege	1508	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3052	._cache_svchost.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2740	3052	._cache_svchost.exe	31
PID 3052 wrote to memory of 2740	3052	._cache_svchost.exe	31
PID 3052 wrote to memory of 2740	3052	._cache_svchost.exe	31
PID 2796 wrote to memory of 2632	2796	taskeng.exe	35
PID 2796 wrote to memory of 2632	2796	taskeng.exe	35
PID 2796 wrote to memory of 2632	2796	taskeng.exe	35
PID 2796 wrote to memory of 2180	2796	taskeng.exe	36
PID 2796 wrote to memory of 2180	2796	taskeng.exe	36
PID 2796 wrote to memory of 2180	2796	taskeng.exe	36
PID 2796 wrote to memory of 1508	2796	taskeng.exe	37
PID 2796 wrote to memory of 1508	2796	taskeng.exe	37
PID 2796 wrote to memory of 1508	2796	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\Xworm-5.6\._cache_svchost.exe
"C:\Users\Admin\AppData\Local\Temp\Xworm-5.6\._cache_svchost.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2740

C:\Windows\system32\taskeng.exe
taskeng.exe {07DB0085-369D-4351-AF48-AE9A813CF822} S-1-5-21-3290804112-2823094203-3137964600-1000:VORHPBAB\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2632
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2180
- C:\Users\Admin\svchost.exe
  C:\Users\Admin\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1508

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\svchost.exe

Filesize
40KB

MD5
5390ed74a0c3c880fdd6d0e2d135bfe1

SHA1
0dbe542e0fe98e17e877f2e5d1dd6dc252943f41

SHA256
48ca5393cc5f72125e9677a9833e86b4bd65aa4a9c167c6171a2d38359b100d9

SHA512
54699e0c3dba1d2df00aca934264fbf728bc2185024d577f3ce2325a9a04467e5b52d15e5f3a5689fe839afa48175765d55f941879076de8012f4bb84fab9cd7

Download Submit
memory/1508-12-0x0000000000210000-0x0000000000220000-memory.dmp

Filesize
64KB

Download
memory/2632-9-0x0000000000D70000-0x0000000000D80000-memory.dmp

Filesize
64KB

Download
memory/3052-0-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/3052-1-0x00000000000D0000-0x00000000000E0000-memory.dmp

Filesize
64KB

Download
memory/3052-2-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download
memory/3052-4-0x000007FEF5EA3000-0x000007FEF5EA4000-memory.dmp

Filesize
4KB

Download
memory/3052-5-0x000007FEF5EA0000-0x000007FEF688C000-memory.dmp

Filesize
9.9MB

Download