xworm | 474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

General

Target

XClient.exe
Size

78KB
MD5

a25ac87d1fea176e553d1892811b8c8d
SHA1

9b624bebe8d344209f6c3d4fa160becb9a3e11dc
SHA256

474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b
SHA512

7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6
SSDEEP

1536:MeQgyB1wb3whRLC7CkbPOOsexl6FdyOGL8jRBYb:Bp61wbKkbPumOGL8jRBY

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

37.114.39.24:7000

Attributes

Install_directory
%AppData%
install_file
winxd9.exe
telegram
https://api.telegram.org/bot7574778549:AAEqgXDQvR3Aj3QmQtNrJtln4Nkd7sNBWVc/sendMessage?chat_id=6855762756

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3984-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp	family_xworm
behavioral2/files/0x000c00000001e4d3-58.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
2408	powershell.exe
2156	powershell.exe
3808	powershell.exe
4164	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-1-5-21-1874072718-2205492803-118941907-1000\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\winxd9.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\winxd9.lnk	XClient.exe

Executes dropped EXE 2 IoCs

pid	Process
2264	winxd9.exe
372	winxd9.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-1-5-21-1874072718-2205492803-118941907-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winxd9 = "C:\\Users\\Admin\\AppData\\Roaming\\winxd9.exe"	XClient.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
388	timeout.exe

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
396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
2408	powershell.exe
2408	powershell.exe
2156	powershell.exe
2156	powershell.exe
3808	powershell.exe
3808	powershell.exe
4164	powershell.exe
4164	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3984	XClient.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	2156	powershell.exe
Token: SeDebugPrivilege	3808	powershell.exe
Token: SeDebugPrivilege	4164	powershell.exe
Token: SeDebugPrivilege	3984	XClient.exe
Token: SeDebugPrivilege	2264	winxd9.exe
Token: SeDebugPrivilege	372	winxd9.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 2408	3984	XClient.exe	87
PID 3984 wrote to memory of 2408	3984	XClient.exe	87
PID 3984 wrote to memory of 2156	3984	XClient.exe	91
PID 3984 wrote to memory of 2156	3984	XClient.exe	91
PID 3984 wrote to memory of 3808	3984	XClient.exe	95
PID 3984 wrote to memory of 3808	3984	XClient.exe	95
PID 3984 wrote to memory of 4164	3984	XClient.exe	97
PID 3984 wrote to memory of 4164	3984	XClient.exe	97
PID 3984 wrote to memory of 396	3984	XClient.exe	99
PID 3984 wrote to memory of 396	3984	XClient.exe	99
PID 3984 wrote to memory of 3484	3984	XClient.exe	123
PID 3984 wrote to memory of 3484	3984	XClient.exe	123
PID 3984 wrote to memory of 4236	3984	XClient.exe	125
PID 3984 wrote to memory of 4236	3984	XClient.exe	125
PID 4236 wrote to memory of 388	4236	cmd.exe	127
PID 4236 wrote to memory of 388	4236	cmd.exe	127

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 use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3984
- 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⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2408
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2156
- 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\winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3808
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'winxd9.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4164
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "winxd9" /tr "C:\Users\Admin\AppData\Roaming\winxd9.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "winxd9"
  2⤵
  PID:3484
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp90AD.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4236
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:388

C:\Users\Admin\AppData\Roaming\winxd9.exe
C:\Users\Admin\AppData\Roaming\winxd9.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2264

C:\Users\Admin\AppData\Roaming\winxd9.exe
C:\Users\Admin\AppData\Roaming\winxd9.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:372

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\winxd9.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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
ff8dea104630cb0cb3da85eea627c4c0

SHA1
b332b51a9f473a604710d64b66c01c9df8caf88b

SHA256
97d63b322c131f512e5b1f2052d364bd82e41de6899d4d334532a35f6e290d7f

SHA512
698ee25bcecac3a2c71452150be7e69fb08bed1a041f2f44e38427a9bb6911a4eea8d7320bb4530c2893c11994913142051d472ddefe900055f415cb9673552e

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_v2xqgvrf.ycj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp90AD.tmp.bat

Filesize
159B

MD5
900225bb3c0f487387ae6c55af190989

SHA1
b613c913d8b4da71cd9348d21d97ae220de192b8

SHA256
96583dfeeef2a6da94e3af7ac89047c863a806799e15d046f706f420765cff19

SHA512
561d15b6be8be8ce510427fe6b0b1acfbfd1cef9c75f621d675188b396075752621db092d2316f1cabcf08d329c95a6237365158ef847d7cc6bb7d45588badd5

Download Submit
C:\Users\Admin\AppData\Roaming\winxd9.exe

Filesize
78KB

MD5
a25ac87d1fea176e553d1892811b8c8d

SHA1
9b624bebe8d344209f6c3d4fa160becb9a3e11dc

SHA256
474c6f3085668a490c022349ebae846ec861c7842500e92f8ffa45d4f78ce10b

SHA512
7a137d4ccc1766351f2ea1a20f4866491b36edaff4902c54d5edf1b69fe22fcae200a14a8d779fbb439f190bd070e91e2bdcbd7b7d2b508901167586a4b31db6

Download Submit
memory/2408-12-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/2408-17-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/2408-14-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/2408-13-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/2408-7-0x0000024923E60000-0x0000024923E82000-memory.dmp

Filesize
136KB

Download
memory/3984-56-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/3984-57-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/3984-0-0x00007FFBEE683000-0x00007FFBEE685000-memory.dmp

Filesize
8KB

Download
memory/3984-69-0x00007FFBEE680000-0x00007FFBEF141000-memory.dmp

Filesize
10.8MB

Download
memory/3984-1-0x0000000000A00000-0x0000000000A1A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads