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 1 IoCs

resource	yara_rule
behavioral2/memory/1600-1-0x0000000000B20000-0x0000000000B3A000-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
1504	powershell.exe
4472	powershell.exe
1872	powershell.exe
2584	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-1-5-21-250031470-1197856012-2659781506-1000\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

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-1-5-21-250031470-1197856012-2659781506-1000\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

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
4432	schtasks.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
1504	powershell.exe
1504	powershell.exe
4472	powershell.exe
4472	powershell.exe
4472	powershell.exe
1872	powershell.exe
1872	powershell.exe
1872	powershell.exe
2584	powershell.exe
2584	powershell.exe
2584	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1600	XClient.exe
Token: SeDebugPrivilege	1504	powershell.exe
Token: SeDebugPrivilege	4472	powershell.exe
Token: SeDebugPrivilege	1872	powershell.exe
Token: SeDebugPrivilege	2584	powershell.exe
Token: SeDebugPrivilege	1600	XClient.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1600 wrote to memory of 1504	1600	XClient.exe	91
PID 1600 wrote to memory of 1504	1600	XClient.exe	91
PID 1600 wrote to memory of 4472	1600	XClient.exe	95
PID 1600 wrote to memory of 4472	1600	XClient.exe	95
PID 1600 wrote to memory of 1872	1600	XClient.exe	97
PID 1600 wrote to memory of 1872	1600	XClient.exe	97
PID 1600 wrote to memory of 2584	1600	XClient.exe	99
PID 1600 wrote to memory of 2584	1600	XClient.exe	99
PID 1600 wrote to memory of 4432	1600	XClient.exe	102
PID 1600 wrote to memory of 4432	1600	XClient.exe	102

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:1600
- 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:1504
- 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:4472
- 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:1872
- 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:2584
- 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:4432

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
dd1d0b083fedf44b482a028fb70b96e8

SHA1
dc9c027937c9f6d52268a1504cbae42a39c8d36a

SHA256
cab7944d29e0501dc0db904ac460ca7a87700e0ec7eb62298b7b97cbf40c424c

SHA512
96bec38bfda176292ae65dcf735103e7888baa212038737c1d1e215fcb76e4c0355e4a827a1934303e7aecae91012fa412f13e38f382b732758bae985cc67973

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_k2hnutjd.u4a.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1504-11-0x000001F353FF0000-0x000001F354012000-memory.dmp

Filesize
136KB

Download
memory/1504-14-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1504-17-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1504-13-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1504-12-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1600-0-0x00007FFC44513000-0x00007FFC44515000-memory.dmp

Filesize
8KB

Download
memory/1600-1-0x0000000000B20000-0x0000000000B3A000-memory.dmp

Filesize
104KB

Download
memory/1600-56-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download
memory/1600-57-0x00007FFC44513000-0x00007FFC44515000-memory.dmp

Filesize
8KB

Download
memory/1600-58-0x00007FFC44510000-0x00007FFC44FD1000-memory.dmp

Filesize
10.8MB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads