xworm | 64348ec4267b52c1a7f639ccfaf9478b6d5159f796176076650901e5b7c0e1df

Analysis

max time kernel
1779s
max time network
1800s
platform
windows11-21h2_x64
resource
win11-20241007-en
resource tags

arch:x64arch:x86image:win11-20241007-enlocale:en-usos:windows11-21h2-x64system
submitted
20-11-2024 22:08

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

tumblr-main/svchost.exe
Size

54KB
MD5

161f7262ae9a6d95ce0f93e46cc5fcf9
SHA1

164551a9330c19a9ed62b6e7d54c6d247704b5e0
SHA256

73a74ebd5e95700aef901c8771fc4b64a677885f23e15bd67628b38e726f7408
SHA512

63bcc54b5846ec20e65c660054d5f6051f357bf803451bf740d7d27505dcc3497a122d62e62ed966329d5b713b8848300bb5ddd77025a3b53cd0d53a19a4c3ea
SSDEEP

1536:SgkETz/wBd3o3nnJWbdWDc06KVnO/jtg:SGnIcXJWbdWBnO/xg

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

45.10.151.182:7000

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral8/memory/3796-1-0x0000000000420000-0x0000000000434000-memory.dmp	family_xworm
behavioral8/files/0x001f00000002aacb-54.dat	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 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
3180	powershell.exe
1520	powershell.exe
1400	powershell.exe
4992	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 30 IoCs

pid	Process
1336	svchost.exe
4884	svchost.exe
956	svchost.exe
4356	svchost.exe
3616	svchost.exe
4892	svchost.exe
4376	svchost.exe
4172	svchost.exe
3792	svchost.exe
2092	svchost.exe
4980	svchost.exe
3160	svchost.exe
4548	svchost.exe
2472	svchost.exe
2316	svchost.exe
2460	svchost.exe
4992	svchost.exe
4448	svchost.exe
2888	svchost.exe
5044	svchost.exe
2192	svchost.exe
2504	svchost.exe
2476	svchost.exe
708	svchost.exe
2220	svchost.exe
4352	svchost.exe
5000	svchost.exe
3448	svchost.exe
4932	svchost.exe
4400	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-1-5-21-556537508-2730415644-482548075-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	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
1	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
3952	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3180	powershell.exe
3180	powershell.exe
1520	powershell.exe
1520	powershell.exe
1400	powershell.exe
1400	powershell.exe
4992	powershell.exe
4992	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
3796	svchost.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	3796	svchost.exe
Token: SeDebugPrivilege	3180	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1400	powershell.exe
Token: SeDebugPrivilege	4992	powershell.exe
Token: SeDebugPrivilege	3796	svchost.exe
Token: SeDebugPrivilege	1336	svchost.exe
Token: SeDebugPrivilege	4884	svchost.exe
Token: SeDebugPrivilege	956	svchost.exe
Token: SeDebugPrivilege	4356	svchost.exe
Token: SeDebugPrivilege	3616	svchost.exe
Token: SeDebugPrivilege	4892	svchost.exe
Token: SeDebugPrivilege	4376	svchost.exe
Token: SeDebugPrivilege	4172	svchost.exe
Token: SeDebugPrivilege	3792	svchost.exe
Token: SeDebugPrivilege	2092	svchost.exe
Token: SeDebugPrivilege	4980	svchost.exe
Token: SeDebugPrivilege	3160	svchost.exe
Token: SeDebugPrivilege	4548	svchost.exe
Token: SeDebugPrivilege	2472	svchost.exe
Token: SeDebugPrivilege	2316	svchost.exe
Token: SeDebugPrivilege	2460	svchost.exe
Token: SeDebugPrivilege	4992	svchost.exe
Token: SeDebugPrivilege	4448	svchost.exe
Token: SeDebugPrivilege	2888	svchost.exe
Token: SeDebugPrivilege	5044	svchost.exe
Token: SeDebugPrivilege	2192	svchost.exe
Token: SeDebugPrivilege	2504	svchost.exe
Token: SeDebugPrivilege	2476	svchost.exe
Token: SeDebugPrivilege	708	svchost.exe
Token: SeDebugPrivilege	2220	svchost.exe
Token: SeDebugPrivilege	4352	svchost.exe
Token: SeDebugPrivilege	5000	svchost.exe
Token: SeDebugPrivilege	3448	svchost.exe
Token: SeDebugPrivilege	4932	svchost.exe
Token: SeDebugPrivilege	4400	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3796 wrote to memory of 3180	3796	svchost.exe	81
PID 3796 wrote to memory of 3180	3796	svchost.exe	81
PID 3796 wrote to memory of 1520	3796	svchost.exe	83
PID 3796 wrote to memory of 1520	3796	svchost.exe	83
PID 3796 wrote to memory of 1400	3796	svchost.exe	85
PID 3796 wrote to memory of 1400	3796	svchost.exe	85
PID 3796 wrote to memory of 4992	3796	svchost.exe	87
PID 3796 wrote to memory of 4992	3796	svchost.exe	87
PID 3796 wrote to memory of 3952	3796	svchost.exe	89
PID 3796 wrote to memory of 3952	3796	svchost.exe	89

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\tumblr-main\svchost.exe
"C:\Users\Admin\AppData\Local\Temp\tumblr-main\svchost.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3796
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\tumblr-main\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3180
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1520
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Roaming\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1400
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4992
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3952

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1336

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4884

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:956

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4356

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3616

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4892

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4376

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4172

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3792

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2092

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4980

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3160

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4548

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2472

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2316

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2460

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4992

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4448

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2888

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5044

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2192

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2504

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2476

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:708

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2220

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4352

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5000

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3448

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4932

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4400

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
e1406e40bc90234838ab278843448a11

SHA1
7e056692cfcf53a92ba8582a5fc0d2a418ef0c81

SHA256
fdc53165753f599dd5a22b0bd229f8e4c63e73dc47aece0b475c79a7255b1d10

SHA512
8ada81e44b16bfca0141dfe52a0b63e3cc7827b8dc45bfea87f834ffb759eeac87426c722b75fd76a447ab5efb69e0053b9fb34bd42d40b413a48f702eb70ab7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
051a74485331f9d9f5014e58ec71566c

SHA1
4ed0256a84f2e95609a0b4d5c249bca624db8fe4

SHA256
3f67e4ba795fd89d33e9a1fe7547e297a82ae50b8f25eedc2b33a27866b28888

SHA512
1f15fd8ca727b198495ef826002c1cbcc63e98eecb2e92abff48354ae668e6c3aaf9bd3005664967ae75637bacee7e730ce36142483d08ae6a068d9ae3e0e17d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jw1glqql.res.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
54KB

MD5
161f7262ae9a6d95ce0f93e46cc5fcf9

SHA1
164551a9330c19a9ed62b6e7d54c6d247704b5e0

SHA256
73a74ebd5e95700aef901c8771fc4b64a677885f23e15bd67628b38e726f7408

SHA512
63bcc54b5846ec20e65c660054d5f6051f357bf803451bf740d7d27505dcc3497a122d62e62ed966329d5b713b8848300bb5ddd77025a3b53cd0d53a19a4c3ea

Download Submit
memory/3180-11-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-15-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-18-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-14-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-13-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-12-0x00007FF9F7210000-0x00007FF9F7CD2000-memory.dmp

Filesize
10.8MB

Download
memory/3180-4-0x00000215C2810000-0x00000215C2832000-memory.dmp

Filesize
136KB

Download
memory/3796-0-0x00007FF9F7213000-0x00007FF9F7215000-memory.dmp

Filesize
8KB

Download
memory/3796-1-0x0000000000420000-0x0000000000434000-memory.dmp

Filesize
80KB

Download