xworm | baa8ace81d5e51f20fea99bf6b8de26c594a2011b670883304e085e5a9847eb2

General

Target

XClient.exe
Size

80KB
MD5

bfa950b37b6a4f8de71af861e677a8b4
SHA1

2ee40bfbf2964d92c82256e5924169295dfdd225
SHA256

07f94f8f6061ba95899914496edc5854aa810de56797d9004875276d60e21ade
SHA512

235b514fac01b24edaef3aeb4209676789b6ba9264a8798cb7ae48c26d2455cdd8f254e92bbba688535acb69fd77b3c0a0a549cf97ece84c235cc74f72234e1a
SSDEEP

1536:EI5NuEGJkEtydWqZQSp1eS+b59gxzhfxdl/5m6qeo//3Oy/4IK4Dax5:Eg1GhtktQGAS+b59cJ4eA/OlINDab

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

full-self.gl.at.ply.gg:45212

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral4/memory/4916-0-0x0000000000B90000-0x0000000000BAA000-memory.dmp	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
4884	powershell.exe
2464	powershell.exe
2032	powershell.exe
2768	powershell.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-1-5-21-25141632-2315680713-2621025411-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	XClient.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4884	powershell.exe
4884	powershell.exe
2464	powershell.exe
2464	powershell.exe
2032	powershell.exe
2032	powershell.exe
2768	powershell.exe
2768	powershell.exe
4916	XClient.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	4916	XClient.exe
Token: SeDebugPrivilege	4884	powershell.exe
Token: SeDebugPrivilege	2464	powershell.exe
Token: SeDebugPrivilege	2032	powershell.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	4916	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4916	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4916 wrote to memory of 4884	4916	XClient.exe	83
PID 4916 wrote to memory of 4884	4916	XClient.exe	83
PID 4916 wrote to memory of 2464	4916	XClient.exe	85
PID 4916 wrote to memory of 2464	4916	XClient.exe	85
PID 4916 wrote to memory of 2032	4916	XClient.exe	87
PID 4916 wrote to memory of 2032	4916	XClient.exe	87
PID 4916 wrote to memory of 2768	4916	XClient.exe	89
PID 4916 wrote to memory of 2768	4916	XClient.exe	89

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4916
- 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:4884
- 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:2464
- 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:2032
- 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:2768

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

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\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
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

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

Filesize
944B

MD5
80b42fe4c6cf64624e6c31e5d7f2d3b3

SHA1
1f93e7dd83b86cb900810b7e3e43797868bf7d93

SHA256
ee20a5b38a6674366efda276dbbf0b43eb54efd282acfc1033042f6b53a80d4d

SHA512
83c1c744c15a8b427a1d3af677ec3bfd0353875a60fe886c41570981e17467ebbb59619b960ca8c5c3ab1430946b0633ea200b7e7d84ab6dca88b60c50055573

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

Filesize
944B

MD5
4093e5ab3812960039eba1a814c2ffb0

SHA1
b5e4a98a80be72fccd3cc910e93113d2febef298

SHA256
c0794e2b7036ce5612446a8b15e0c8387773bbc921f63cf8849f8a1f4ef3878c

SHA512
f3555b45aa1a1dd5214716dc81a05905c4ecd5a3e1276d35e08c65623ab1d14d469b3b576a5d9638264c1222d73889d2cc1ee43fb579d9ca3fcddd9f557cac7b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_irsc2ujp.25d.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2032-42-0x0000026BF51F0000-0x0000026BF533F000-memory.dmp

Filesize
1.3MB

Download
memory/2464-31-0x00000235FB9B0000-0x00000235FBAFF000-memory.dmp

Filesize
1.3MB

Download
memory/2768-53-0x000001772F4A0000-0x000001772F5EF000-memory.dmp

Filesize
1.3MB

Download
memory/4884-12-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-19-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-17-0x0000018831910000-0x0000018831A5F000-memory.dmp

Filesize
1.3MB

Download
memory/4884-18-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-14-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-13-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-11-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4884-10-0x00000188317A0000-0x00000188317C2000-memory.dmp

Filesize
136KB

Download
memory/4916-1-0x00007FF9B59F3000-0x00007FF9B59F5000-memory.dmp

Filesize
8KB

Download
memory/4916-0-0x0000000000B90000-0x0000000000BAA000-memory.dmp

Filesize
104KB

Download
memory/4916-55-0x00007FF9B59F0000-0x00007FF9B64B2000-memory.dmp

Filesize
10.8MB

Download
memory/4916-56-0x00007FF9B59F0000-0x00007FF9B64B2000-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