xworm | 54a6342541cb80a9e801ce48de755ab5dfb1931e2afdf9ae55714f502c9b09e4

General

Target

33333.exe
Size

90KB
MD5

e10791416cbe4bd094d22476f1e0d067
SHA1

9e86515eb7e5b3fd7adfc52db9508adc61c29cd8
SHA256

54a6342541cb80a9e801ce48de755ab5dfb1931e2afdf9ae55714f502c9b09e4
SHA512

34cdc3c5f152dc27e1ff07311264fcebb250e8125d3a4cf7a02797a16bb48dea4ecfc3de88d46a439481ca80d54fe5f0e4964206a5a00bf665a0bdeac5df9e9b
SSDEEP

1536:K+yL5gAxHwKKXHWsjTv5RHWvcbJMP7CesjBD6DrWWmPOrVYTSdBc:el9OWs3WkbJsTs+CPOrVWuc

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

virtual-pointed.gl.at.ply.gg:17000

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2076-1-0x00000000008C0000-0x00000000008DC000-memory.dmp	family_xworm
behavioral1/files/0x00120000000122f3-34.dat	family_xworm
behavioral1/memory/1440-35-0x0000000000E20000-0x0000000000E3C000-memory.dmp	family_xworm
behavioral1/memory/436-38-0x0000000001260000-0x000000000127C000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2796	powershell.exe
2756	powershell.exe
2280	powershell.exe
2988	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	33333.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	33333.exe

Executes dropped EXE 3 IoCs

pid	Process
1440	svchost.exe
436	svchost.exe
1452	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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	33333.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
1568	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2280	powershell.exe
2988	powershell.exe
2796	powershell.exe
2756	powershell.exe
2076	33333.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2076	33333.exe
Token: SeDebugPrivilege	2280	powershell.exe
Token: SeDebugPrivilege	2988	powershell.exe
Token: SeDebugPrivilege	2796	powershell.exe
Token: SeDebugPrivilege	2756	powershell.exe
Token: SeDebugPrivilege	2076	33333.exe
Token: SeDebugPrivilege	1440	svchost.exe
Token: SeDebugPrivilege	436	svchost.exe
Token: SeDebugPrivilege	1452	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2076	33333.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 2076 wrote to memory of 2280	2076	33333.exe	31
PID 2076 wrote to memory of 2280	2076	33333.exe	31
PID 2076 wrote to memory of 2280	2076	33333.exe	31
PID 2076 wrote to memory of 2988	2076	33333.exe	33
PID 2076 wrote to memory of 2988	2076	33333.exe	33
PID 2076 wrote to memory of 2988	2076	33333.exe	33
PID 2076 wrote to memory of 2796	2076	33333.exe	35
PID 2076 wrote to memory of 2796	2076	33333.exe	35
PID 2076 wrote to memory of 2796	2076	33333.exe	35
PID 2076 wrote to memory of 2756	2076	33333.exe	37
PID 2076 wrote to memory of 2756	2076	33333.exe	37
PID 2076 wrote to memory of 2756	2076	33333.exe	37
PID 2076 wrote to memory of 1568	2076	33333.exe	39
PID 2076 wrote to memory of 1568	2076	33333.exe	39
PID 2076 wrote to memory of 1568	2076	33333.exe	39
PID 1436 wrote to memory of 1440	1436	taskeng.exe	42
PID 1436 wrote to memory of 1440	1436	taskeng.exe	42
PID 1436 wrote to memory of 1440	1436	taskeng.exe	42
PID 1436 wrote to memory of 436	1436	taskeng.exe	43
PID 1436 wrote to memory of 436	1436	taskeng.exe	43
PID 1436 wrote to memory of 436	1436	taskeng.exe	43
PID 1436 wrote to memory of 1452	1436	taskeng.exe	44
PID 1436 wrote to memory of 1452	1436	taskeng.exe	44
PID 1436 wrote to memory of 1452	1436	taskeng.exe	44

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\33333.exe
"C:\Users\Admin\AppData\Local\Temp\33333.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:2076
- 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\33333.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2280
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '33333.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2988
- 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:2796
- 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:2756
- 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:1568

C:\Windows\system32\taskeng.exe
taskeng.exe {3C4EE062-E245-4C0F-BC7A-A770DDE08EA2} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1436
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1440
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1452

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

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

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
3fce9cd2e2575bf1b517d65eb01cfa33

SHA1
8641b4c6c9d041ed853a0d99acf7d6d38a1a8a36

SHA256
9294a078e2dff9e5e5ed63a59443c0246e7e37ede185ed0d5ace5c0940da2684

SHA512
7bc7804b8848f6560d9f348228b215d5c2c6d2238fbe9155b8d8697d180423b10ba22dd87ee9cf14c0466094d1139b75e2f7c8e57eddd6cd18901d2bc70da368

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

Filesize
90KB

MD5
e10791416cbe4bd094d22476f1e0d067

SHA1
9e86515eb7e5b3fd7adfc52db9508adc61c29cd8

SHA256
54a6342541cb80a9e801ce48de755ab5dfb1931e2afdf9ae55714f502c9b09e4

SHA512
34cdc3c5f152dc27e1ff07311264fcebb250e8125d3a4cf7a02797a16bb48dea4ecfc3de88d46a439481ca80d54fe5f0e4964206a5a00bf665a0bdeac5df9e9b

Download Submit
memory/436-38-0x0000000001260000-0x000000000127C000-memory.dmp

Filesize
112KB

Download
memory/1440-35-0x0000000000E20000-0x0000000000E3C000-memory.dmp

Filesize
112KB

Download
memory/2076-31-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2076-1-0x00000000008C0000-0x00000000008DC000-memory.dmp

Filesize
112KB

Download
memory/2076-2-0x000007FEF5160000-0x000007FEF5B4C000-memory.dmp

Filesize
9.9MB

Download
memory/2076-0-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

Filesize
4KB

Download
memory/2076-16-0x000007FEF5163000-0x000007FEF5164000-memory.dmp

Filesize
4KB

Download
memory/2280-7-0x000000001B440000-0x000000001B722000-memory.dmp

Filesize
2.9MB

Download
memory/2280-8-0x00000000022E0000-0x00000000022E8000-memory.dmp

Filesize
32KB

Download
memory/2988-15-0x0000000002370000-0x0000000002378000-memory.dmp

Filesize
32KB

Download
memory/2988-14-0x000000001B250000-0x000000001B532000-memory.dmp

Filesize
2.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads