xworm | bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2

General

Target

XClient.exe
Size

65KB
MD5

f4e5f696d570d7941c3501411c0d1d6c
SHA1

4a22f1fc9571cf7da21df2eeb3db4d9af5ba5bee
SHA256

bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2
SHA512

9f21975b2eb8bc01d3fd7c18db02cf67cb1092013deac99842fb7868a213f23fcbc1cd37527b357be1447c332ed2b29dfc3e19925a5f654a6a1771a1ee9290e4
SSDEEP

1536:/o4f+hIhZduTpNj/PjkbFFUprp5QaN6GOIrma1:DxhqvkbFufpOIyk

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

sponef159-35748.portmap.host:7809

Attributes

Install_directory
%AppData%
install_file
svchost.exe
telegram
https://api.telegram.org/bot7508868671:AAG6XIOhz39IrQIUnjub1TKVOVZHfdjpsvM/sendMessage?chat_id=6094400048

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/4712-1-0x0000000000530000-0x0000000000546000-memory.dmp	family_xworm
behavioral1/files/0x000b000000023ca6-59.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
2132	powershell.exe
2872	powershell.exe
2012	powershell.exe
3560	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-1-5-21-4050598569-1597076380-177084960-1000\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\svchost.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	XClient.exe

Executes dropped EXE 2 IoCs

pid	Process
2376	svchost.exe
3784	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-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.exe

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

System Information Discovery
T1082

Checks SCSI registry key(s) 3 TTPs 3 IoCs

SCSI information is often read in order to detect sandboxing environments.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\FriendlyName	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000	taskmgr.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Enum\SCSI\Disk&Ven_WDC&Prod_WDS100T2B0A\4&215468a5&0&000000\Properties\{b725f130-47ef-101a-a5f1-02608c9eebac}\000A	taskmgr.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
2704	schtasks.exe

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
2132	powershell.exe
2132	powershell.exe
2872	powershell.exe
2872	powershell.exe
2012	powershell.exe
2012	powershell.exe
3560	powershell.exe
3560	powershell.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	4712	XClient.exe
Token: SeDebugPrivilege	2132	powershell.exe
Token: SeDebugPrivilege	2872	powershell.exe
Token: SeDebugPrivilege	2012	powershell.exe
Token: SeDebugPrivilege	3560	powershell.exe
Token: SeDebugPrivilege	4712	XClient.exe
Token: SeDebugPrivilege	2376	svchost.exe
Token: SeDebugPrivilege	1212	taskmgr.exe
Token: SeSystemProfilePrivilege	1212	taskmgr.exe
Token: SeCreateGlobalPrivilege	1212	taskmgr.exe
Token: 33	1212	taskmgr.exe
Token: SeIncBasePriorityPrivilege	1212	taskmgr.exe
Token: SeDebugPrivilege	3784	svchost.exe

Suspicious use of FindShellTrayWindow 40 IoCs

pid	Process
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe

Suspicious use of SendNotifyMessage 40 IoCs

pid	Process
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe
1212	taskmgr.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4712 wrote to memory of 2132	4712	XClient.exe	82
PID 4712 wrote to memory of 2132	4712	XClient.exe	82
PID 4712 wrote to memory of 2872	4712	XClient.exe	84
PID 4712 wrote to memory of 2872	4712	XClient.exe	84
PID 4712 wrote to memory of 2012	4712	XClient.exe	87
PID 4712 wrote to memory of 2012	4712	XClient.exe	87
PID 4712 wrote to memory of 3560	4712	XClient.exe	89
PID 4712 wrote to memory of 3560	4712	XClient.exe	89
PID 4712 wrote to memory of 2704	4712	XClient.exe	91
PID 4712 wrote to memory of 2704	4712	XClient.exe	91

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:4712
- 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:2132
- 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:2872
- 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:2012
- 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:3560
- 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:2704

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2376

C:\Windows\system32\taskmgr.exe
"C:\Windows\system32\taskmgr.exe" /4
1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1212

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3784

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

Peripheral Device Discovery

Query Registry

System Information Discovery

3

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\svchost.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
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

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

Filesize
944B

MD5
eaa23431aca14ab1b28011ab9ec88e5f

SHA1
f89b36fd6e99118b5d387a7364669f318f00fe8f

SHA256
cebe9b75ccd63a0f8c3cfb2d438b9db1817791edd30e40c55951334907f24bd7

SHA512
13487549661dc74b6855681fb3601a893ac02c732093abd4bbadfdfe948e8bcf79fbe4e32d1c165264a40c3500777c404062015990045d8769f16ea5dcf4702f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_u2lguom5.foj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk

Filesize
771B

MD5
453430639083b6e44a38998fec3075ba

SHA1
31e45ec660585ee86be5630154f822311241f2dd

SHA256
9bf2c25c8c1976e0cc791630da82013e842ec9006b55a119ef3f5ece61b1cf86

SHA512
16a4f812a256bed9d60c458a3a5ae532b055bc7e57a6cd3d480bfedbdf05bf2ac579ce17ee3622c7ebd3b3675e1411fc67051554530cfdfefbf31b2b5df73280

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

Filesize
65KB

MD5
f4e5f696d570d7941c3501411c0d1d6c

SHA1
4a22f1fc9571cf7da21df2eeb3db4d9af5ba5bee

SHA256
bf200fd4fc3cb983bd36958cbb6d0cdd23a25b5e8e897c2d8f7ac9758e728ed2

SHA512
9f21975b2eb8bc01d3fd7c18db02cf67cb1092013deac99842fb7868a213f23fcbc1cd37527b357be1447c332ed2b29dfc3e19925a5f654a6a1771a1ee9290e4

Download Submit
memory/1212-68-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-71-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-70-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-69-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-72-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-73-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-74-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-62-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-63-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/1212-64-0x000002A01F0A0000-0x000002A01F0A1000-memory.dmp

Filesize
4KB

Download
memory/2132-14-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/2132-17-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/2132-13-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/2132-12-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/2132-2-0x000001AFB4B30000-0x000001AFB4B52000-memory.dmp

Filesize
136KB

Download
memory/4712-57-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/4712-56-0x00007FFC0D290000-0x00007FFC0DD51000-memory.dmp

Filesize
10.8MB

Download
memory/4712-0-0x00007FFC0D293000-0x00007FFC0D295000-memory.dmp

Filesize
8KB

Download
memory/4712-1-0x0000000000530000-0x0000000000546000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads