xworm | f3e4d0ae62e681200fb759ba5717b8002bdebdfb5ad2ad92200ad62d03ad5a46

General

Target

7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe
Size

73KB
MD5

af9ff800562a87e5121cad94adb74471
SHA1

ccadb2b20a7ee0cffeffed04e415ca131a7c41bc
SHA256

7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246
SHA512

004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892
SSDEEP

1536:q2H3hrFnT3fdHC0+aasbh0bkkNB/cxbRH6TTpH4ONThXiA:nXffdDznmbklxbCTpYOBhSA

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:56698

true-lung.gl.at.ply.gg:56698

Attributes

Install_directory
%Userprofile%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1020-1-0x00000000002C0000-0x00000000002D8000-memory.dmp	family_xworm
behavioral2/files/0x0011000000023acd-60.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
384	powershell.exe
4088	powershell.exe
2680	powershell.exe
1904	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svhost.lnk	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe

Executes dropped EXE 2 IoCs

pid	Process
856	svhost.exe
3300	svhost.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\Users\\Admin\\svhost.exe"	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.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
15	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
5036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2680	powershell.exe
2680	powershell.exe
1904	powershell.exe
1904	powershell.exe
384	powershell.exe
384	powershell.exe
4088	powershell.exe
4088	powershell.exe
1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	1904	powershell.exe
Token: SeDebugPrivilege	384	powershell.exe
Token: SeDebugPrivilege	4088	powershell.exe
Token: SeDebugPrivilege	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe
Token: SeDebugPrivilege	856	svhost.exe
Token: SeDebugPrivilege	3300	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1020 wrote to memory of 2680	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	89
PID 1020 wrote to memory of 2680	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	89
PID 1020 wrote to memory of 1904	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	91
PID 1020 wrote to memory of 1904	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	91
PID 1020 wrote to memory of 384	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	96
PID 1020 wrote to memory of 384	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	96
PID 1020 wrote to memory of 4088	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	99
PID 1020 wrote to memory of 4088	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	99
PID 1020 wrote to memory of 5036	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	101
PID 1020 wrote to memory of 5036	1020	7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe	101

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\7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe
"C:\Users\Admin\AppData\Local\Temp\7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe"
1⤵
- Checks computer location settings
- 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:1020
- 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\7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2680
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1904
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:384
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4088
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\Users\Admin\svhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:5036

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:856

C:\Users\Admin\svhost.exe
C:\Users\Admin\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3300

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
a43e653ffb5ab07940f4bdd9cc8fade4

SHA1
af43d04e3427f111b22dc891c5c7ee8a10ac4123

SHA256
c4c53abb13e99475aebfbe9fec7a8fead81c14c80d9dcc2b81375304f3a683fe

SHA512
62a97e95e1f19a8d4302847110dae44f469877eed6aa8ea22345c6eb25ee220e7d310fa0b7ec5df42356815421c0af7c46a0f1fee8933cc446641800eda6cd1b

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
4bf0bc0ee50f611e59dc831fbe4bec43

SHA1
07f72e5d6a281be0dba1e3ef97dfdf37f799bab8

SHA256
786a7b226dd73b5fd37e113170a5fe9a3de6f7dcca5f07b526d06ccb9ee1e810

SHA512
695252ef0552cfefa8ef6b882f45912d03247983c4b9bbc30a1d6122b1a74ba736c8eef339a2230fbc98deafee9cf41410169ff62f8eab6b7590868215feb39f

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

Filesize
944B

MD5
1408adb4fa31cb3d20a9dc97ed8a9428

SHA1
33a8b5c585779112ea6a0c440289d735f97fa112

SHA256
59ab3fabec142f3e9379d208f5a617351822ed1fd9a0b7c77a9a30085c3b18b7

SHA512
019b71160ef3642890faae3b5dc0d91f400373a7c8fabfbc08ca81a14d26f276cc67b14439b87e05304d6c2542efbe9469a3f093f298b4e58754cf68db936619

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

Filesize
944B

MD5
e60eb305a7b2d9907488068b7065abd3

SHA1
1643dd7f915ac50c75bc01c53d68c5dafb9ce28d

SHA256
ad07460e061642c0dd4e7dfa7b821aacce873e290389e72f708e9f3504f9d135

SHA512
95c45afec6fa4e0b2a21edd10a6b2dc30568810c67bc9bc34d98ab111c48261f377a370583adb27e08616b0108026c119493b1b093b52ce931117e646b46cb7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ml1uo2od.hdq.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\svhost.exe

Filesize
73KB

MD5
af9ff800562a87e5121cad94adb74471

SHA1
ccadb2b20a7ee0cffeffed04e415ca131a7c41bc

SHA256
7bcff120e45739b923e684e9c246e4c650cdfe3e5fe51399cfba6bcf932bd246

SHA512
004d275549a7c0b8ba717a46c9a9b80ecc442db6dd868384a17ba797f1db8a64d6198317ffd28ca619c8fe3ffebb934eb9cb9b60486e8e5c79563206c9aaf892

Download Submit
memory/1020-0-0x00007FFCA1993000-0x00007FFCA1995000-memory.dmp

Filesize
8KB

Download
memory/1020-30-0x00007FFCA1993000-0x00007FFCA1995000-memory.dmp

Filesize
8KB

Download
memory/1020-2-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download
memory/1020-58-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download
memory/1020-1-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/2680-14-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download
memory/2680-15-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download
memory/2680-18-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download
memory/2680-12-0x0000027286890000-0x00000272868B2000-memory.dmp

Filesize
136KB

Download
memory/2680-13-0x00007FFCA1990000-0x00007FFCA2451000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads