xworm | fcb25edd7e4c2a9e994e1a084488e12df32b46c92a2384f01708b4a1c2cd3a61

General

Target

xclient.exe
Size

135KB
MD5

439179334e1527e8d4a6b557b352b915
SHA1

34586204b00571b0c7cc1f042957b9b72cb23e22
SHA256

fcb25edd7e4c2a9e994e1a084488e12df32b46c92a2384f01708b4a1c2cd3a61
SHA512

c3d7c61f0aea42ec887ebee99da3108ac3aeda16feb6e3bedd5c4d30c57c735c591bae34ca377d95e6f0bd4b007c2300502ba01351db5f6f05d242a947bf2c00
SSDEEP

1536:t19JeX4CHpOcrgI1bqOSjzE7d7naRMd6hhucoJOIB+32KXO1He4a:3KX4CHk4D1bqw7TaUJOS02kks

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

patients-bags.gl.at.ply:30820

Attributes

Install_directory
%Userprofile%
install_file
discord.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2368-0-0x0000000000F80000-0x0000000000FA8000-memory.dmp	family_xworm
behavioral1/files/0x000c000000023409-71.dat	family_xworm

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

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-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	xclient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3608	discord.exe
3788	discord.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-1-5-21-2177723727-746291240-1644359950-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\discord = "C:\\Users\\Admin\\discord.exe"	xclient.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
24	ip-api.com

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
1744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1768	powershell.exe
1768	powershell.exe
4732	powershell.exe
4732	powershell.exe
4160	powershell.exe
4160	powershell.exe
3824	powershell.exe
3824	powershell.exe
2368	xclient.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	xclient.exe
Token: SeDebugPrivilege	1768	powershell.exe
Token: SeDebugPrivilege	4732	powershell.exe
Token: SeDebugPrivilege	4160	powershell.exe
Token: SeDebugPrivilege	3824	powershell.exe
Token: SeDebugPrivilege	2368	xclient.exe
Token: SeDebugPrivilege	3608	discord.exe
Token: SeDebugPrivilege	3788	discord.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2368	xclient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1768	2368	xclient.exe	92
PID 2368 wrote to memory of 1768	2368	xclient.exe	92
PID 2368 wrote to memory of 4732	2368	xclient.exe	94
PID 2368 wrote to memory of 4732	2368	xclient.exe	94
PID 2368 wrote to memory of 4160	2368	xclient.exe	96
PID 2368 wrote to memory of 4160	2368	xclient.exe	96
PID 2368 wrote to memory of 3824	2368	xclient.exe	98
PID 2368 wrote to memory of 3824	2368	xclient.exe	98
PID 2368 wrote to memory of 1744	2368	xclient.exe	100
PID 2368 wrote to memory of 1744	2368	xclient.exe	100

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\xclient.exe
"C:\Users\Admin\AppData\Local\Temp\xclient.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:2368
- 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\xclient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'xclient.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4732
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\discord.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4160
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'discord.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3824
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "discord" /tr "C:\Users\Admin\discord.exe"
  2⤵
  - Creates scheduled task(s)
  PID:1744

C:\Users\Admin\discord.exe
C:\Users\Admin\discord.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3608

C:\Users\Admin\discord.exe
C:\Users\Admin\discord.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3788

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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\discord.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
440cb38dbee06645cc8b74d51f6e5f71

SHA1
d7e61da91dc4502e9ae83281b88c1e48584edb7c

SHA256
8ef7a682dfd99ff5b7e9de0e1be43f0016d68695a43c33c028af2635cc15ecfe

SHA512
3aab19578535e6ba0f6beb5690c87d970292100704209d2dcebddcdd46c6bead27588ef5d98729bfd50606a54cc1edf608b3d15bef42c13b9982aaaf15de7fd6

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

Filesize
944B

MD5
4a154efa7af25bb8b94d0d9c7b4f15cd

SHA1
5e0e04103e4eef1bc7ef242b730aed1958f98e1f

SHA256
c216eda372556eb78e680bde247c2fd2085642ee33031905a213c6bec502ccce

SHA512
fc4678133318fe1952947be74e244246336c7faacc9b9ae32336d57b106ec8f044e5db41dd98e8f3a54270ddacab2fc84a66d5d67deeadc3056ea5213bcbbba4

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

Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

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

Filesize
944B

MD5
96e3b86880fedd5afc001d108732a3e5

SHA1
8fc17b39d744a9590a6d5897012da5e6757439a3

SHA256
c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294

SHA512
909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_0nin1so1.0qf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
135KB

MD5
439179334e1527e8d4a6b557b352b915

SHA1
34586204b00571b0c7cc1f042957b9b72cb23e22

SHA256
fcb25edd7e4c2a9e994e1a084488e12df32b46c92a2384f01708b4a1c2cd3a61

SHA512
c3d7c61f0aea42ec887ebee99da3108ac3aeda16feb6e3bedd5c4d30c57c735c591bae34ca377d95e6f0bd4b007c2300502ba01351db5f6f05d242a947bf2c00

Download Submit
memory/1768-14-0x00000237763E0000-0x00000237763F0000-memory.dmp

Filesize
64KB

Download
memory/1768-15-0x00000237763E0000-0x00000237763F0000-memory.dmp

Filesize
64KB

Download
memory/1768-18-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1768-13-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/1768-8-0x0000023778460000-0x0000023778482000-memory.dmp

Filesize
136KB

Download
memory/2368-0-0x0000000000F80000-0x0000000000FA8000-memory.dmp

Filesize
160KB

Download
memory/2368-69-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/2368-70-0x000000001BD90000-0x000000001BDA0000-memory.dmp

Filesize
64KB

Download
memory/2368-2-0x000000001BD90000-0x000000001BDA0000-memory.dmp

Filesize
64KB

Download
memory/2368-1-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3608-73-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3608-75-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3788-79-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3788-80-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3824-64-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/3824-52-0x000001FE9AB00000-0x000001FE9AB10000-memory.dmp

Filesize
64KB

Download
memory/3824-51-0x000001FE9AB00000-0x000001FE9AB10000-memory.dmp

Filesize
64KB

Download
memory/3824-50-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4160-49-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4160-46-0x0000022B6BE60000-0x0000022B6BE70000-memory.dmp

Filesize
64KB

Download
memory/4160-44-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4160-45-0x0000022B6BE60000-0x0000022B6BE70000-memory.dmp

Filesize
64KB

Download
memory/4732-34-0x00007FFF40030000-0x00007FFF40AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4732-22-0x000001B5A6E80000-0x000001B5A6E90000-memory.dmp

Filesize
64KB

Download
memory/4732-21-0x000001B5A6E80000-0x000001B5A6E90000-memory.dmp

Filesize
64KB

Download
memory/4732-20-0x00007FFF40030000-0x00007FFF40AF1000-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