xworm | fb74bd701a497dc3451d70bb8ed961303c6a6552fbcfc0c685015163748cdf12

General

Target

GTAGLagPatcher.exe
Size

70KB
MD5

a465ea357cae35a66da7279a592e25c5
SHA1

fb20362c444ea4fbdc14597b78eee66c5b9c2a44
SHA256

fb74bd701a497dc3451d70bb8ed961303c6a6552fbcfc0c685015163748cdf12
SHA512

bc88851b92eb39cc22a41f1e6d6425fa061b8e1abdc8a9f0b51d76f67df38158fbc19872f9b2ccc4a50e090067a11f047bbf5b282dea35118636bdc0c3dd4210
SSDEEP

1536:UQKOINQ8A4A3inaxLUPs9bfI86cT06POOoNQFMEX:UfrNQ8A4As6Ks9bf3dOfNg9X

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:33292

corporation-ver.gl.at.ply.gg:33292

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1164-1-0x00000000005A0000-0x00000000005B8000-memory.dmp	family_xworm
behavioral2/files/0x002000000002ab25-56.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
2448	powershell.exe
4480	powershell.exe
1976	powershell.exe
3256	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2320	XClient.exe
1860	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-1-5-21-1474490143-3221292397-4168103503-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	GTAGLagPatcher.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
1	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
3636	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2448	powershell.exe
2448	powershell.exe
4480	powershell.exe
4480	powershell.exe
1976	powershell.exe
1976	powershell.exe
3256	powershell.exe
3256	powershell.exe
1164	GTAGLagPatcher.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1164	GTAGLagPatcher.exe
Token: SeDebugPrivilege	2448	powershell.exe
Token: SeDebugPrivilege	4480	powershell.exe
Token: SeDebugPrivilege	1976	powershell.exe
Token: SeDebugPrivilege	3256	powershell.exe
Token: SeDebugPrivilege	1164	GTAGLagPatcher.exe
Token: SeDebugPrivilege	2320	XClient.exe
Token: SeDebugPrivilege	1860	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1164	GTAGLagPatcher.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1164 wrote to memory of 2448	1164	GTAGLagPatcher.exe	81
PID 1164 wrote to memory of 2448	1164	GTAGLagPatcher.exe	81
PID 1164 wrote to memory of 4480	1164	GTAGLagPatcher.exe	83
PID 1164 wrote to memory of 4480	1164	GTAGLagPatcher.exe	83
PID 1164 wrote to memory of 1976	1164	GTAGLagPatcher.exe	85
PID 1164 wrote to memory of 1976	1164	GTAGLagPatcher.exe	85
PID 1164 wrote to memory of 3256	1164	GTAGLagPatcher.exe	87
PID 1164 wrote to memory of 3256	1164	GTAGLagPatcher.exe	87
PID 1164 wrote to memory of 3636	1164	GTAGLagPatcher.exe	89
PID 1164 wrote to memory of 3636	1164	GTAGLagPatcher.exe	89

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\GTAGLagPatcher.exe
"C:\Users\Admin\AppData\Local\Temp\GTAGLagPatcher.exe"
1⤵
- 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:1164
- 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\GTAGLagPatcher.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2448
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'GTAGLagPatcher.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4480
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1976
- 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:3256
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3636

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2320

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
654B

MD5
2cbbb74b7da1f720b48ed31085cbd5b8

SHA1
79caa9a3ea8abe1b9c4326c3633da64a5f724964

SHA256
e31b18f21621d9983bfdf1ea3e53884a9d58b8ffd79e0e5790da6f3a81a8b9d3

SHA512
ecf02d5240e0c1c005d3ab393aa7eff62bd498c2db5905157e2bf6d29e1b663228a9583950842629d1a4caef404c8941a0c7799b1a3bd1eb890a09fdb7efcff9

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
6903d57eed54e89b68ebb957928d1b99

SHA1
fade011fbf2e4bc044d41e380cf70bd6a9f73212

SHA256
36cbb00b016c9f97645fb628ef72b524dfbdf6e08d626e5c837bbbb9075dcb52

SHA512
c192ea9810fd22de8378269235c1035aa1fe1975a53c876fe4a7acc726c020f94773c21e4e4771133f9fcedb0209f0a5324c594c1db5b28fe1b27644db4fdc9e

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

Filesize
944B

MD5
8b1394bd98c93d68bb4151a8c8c4015b

SHA1
3c5695c58a2186c1a13e70d8de9343f660429a91

SHA256
3d46aa2ace9880ec7c1eb00581078beb3ca2107f343654aa5d5e250c97bf67d8

SHA512
b7fe198d72b322dd2b2badf038821af9ceccae8b506f7475d8c253ea40aef9b0ba50dae223d5251d72a14aec81d025d394d3277576125d03f3e4ec393459a607

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

Filesize
944B

MD5
cc2210f652fff7eb769ceac982678f09

SHA1
dc1eebc04c9fc5dbfc05b80340ada3c63e16178e

SHA256
8fd1a8119831b8aec9d809642505b154c6ad3a6920a7bf7c8028e369da5978c5

SHA512
38db3e814c4e67f79938574d4d7b73248c61011dca46d2c77615aa1682fddf0554f41eef2097c4149ad4dee41b53db9c654901d001fc6f674d0a7c3ef5f58303

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sn0paxgl.ry3.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
70KB

MD5
a465ea357cae35a66da7279a592e25c5

SHA1
fb20362c444ea4fbdc14597b78eee66c5b9c2a44

SHA256
fb74bd701a497dc3451d70bb8ed961303c6a6552fbcfc0c685015163748cdf12

SHA512
bc88851b92eb39cc22a41f1e6d6425fa061b8e1abdc8a9f0b51d76f67df38158fbc19872f9b2ccc4a50e090067a11f047bbf5b282dea35118636bdc0c3dd4210

Download Submit
memory/1164-0-0x00007FFDCB233000-0x00007FFDCB235000-memory.dmp

Filesize
8KB

Download
memory/1164-2-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/1164-1-0x00000000005A0000-0x00000000005B8000-memory.dmp

Filesize
96KB

Download
memory/1164-55-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-12-0x00000188EFFB0000-0x00000188EFFD2000-memory.dmp

Filesize
136KB

Download
memory/2448-19-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-16-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-15-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-14-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-13-0x00007FFDCB230000-0x00007FFDCBCF2000-memory.dmp

Filesize
10.8MB

Download
memory/2448-3-0x00007FFDCB230000-0x00007FFDCBCF2000-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