xworm | 4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a

General

Target

XCliet.exe
Size

68KB
MD5

0815ae69147a697b5bae3d8d15cb7c75
SHA1

99a3b145ca36742aa0cbe0ef33829426f1dcf4ef
SHA256

4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a
SHA512

992b165f6816f4711b3b0a6b7a8f83e4f58838abea7714df4bc8c30f7d9ed401d9b8f63296e3d13ca2d81894f754511628b042c5028feca4f54ca2b6bf70f0aa
SSDEEP

1536:RR1SVHku2BbeHCKNNJu+b4+QA6e2OcJv5SuUA:oReSTNu+b4e2Oa7R

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

pst-evidence.gl.at.ply.gg:8848

Attributes

Install_directory
%LocalAppData%
install_file
System32.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2340-1-0x0000000000EA0000-0x0000000000EB8000-memory.dmp	family_xworm
behavioral1/files/0x002000000002aa66-56.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
3812	powershell.exe
1092	powershell.exe
4108	powershell.exe
3312	powershell.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XCliet.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\System32.lnk	XCliet.exe

Executes dropped EXE 2 IoCs

pid	Process
4348	System32.exe
3604	System32.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-1-5-21-4018527317-446799424-2810249686-1000\Software\Microsoft\Windows\CurrentVersion\Run\System32 = "C:\\Users\\Admin\\AppData\\Local\\System32.exe"	XCliet.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
72	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3812	powershell.exe
3812	powershell.exe
1092	powershell.exe
1092	powershell.exe
4108	powershell.exe
4108	powershell.exe
3312	powershell.exe
3312	powershell.exe
2340	XCliet.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2340	XCliet.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	1092	powershell.exe
Token: SeDebugPrivilege	4108	powershell.exe
Token: SeDebugPrivilege	3312	powershell.exe
Token: SeDebugPrivilege	2340	XCliet.exe
Token: SeDebugPrivilege	4348	System32.exe
Token: SeDebugPrivilege	3604	System32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2340	XCliet.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2340 wrote to memory of 3812	2340	XCliet.exe	77
PID 2340 wrote to memory of 3812	2340	XCliet.exe	77
PID 2340 wrote to memory of 1092	2340	XCliet.exe	79
PID 2340 wrote to memory of 1092	2340	XCliet.exe	79
PID 2340 wrote to memory of 4108	2340	XCliet.exe	81
PID 2340 wrote to memory of 4108	2340	XCliet.exe	81
PID 2340 wrote to memory of 3312	2340	XCliet.exe	83
PID 2340 wrote to memory of 3312	2340	XCliet.exe	83
PID 2340 wrote to memory of 72	2340	XCliet.exe	85
PID 2340 wrote to memory of 72	2340	XCliet.exe	85

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\XCliet.exe
"C:\Users\Admin\AppData\Local\Temp\XCliet.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:2340
- 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\XCliet.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3812
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XCliet.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1092
- 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\System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4108
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System32.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3312
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System32" /tr "C:\Users\Admin\AppData\Local\System32.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:72

C:\Users\Admin\AppData\Local\System32.exe
C:\Users\Admin\AppData\Local\System32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4348

C:\Users\Admin\AppData\Local\System32.exe
C:\Users\Admin\AppData\Local\System32.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3604

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

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\System32.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
1a9fa92a4f2e2ec9e244d43a6a4f8fb9

SHA1
9910190edfaccece1dfcc1d92e357772f5dae8f7

SHA256
0ee052d5333fd5fd86bc84856fec98e045f077a7ac8051651bf7c521b9706888

SHA512
5d2361476fa22200e6f83883efe7dcb8c3fe7dae8d56e04e28a36e9ae1270c327b6aa161d92b239593da7661289d002c574446ecfd6bd19928209aae25e3ef64

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

Filesize
944B

MD5
c24caab1947646fcc49d6158d78a56f5

SHA1
aa2cd00401eb273991f2d6fdc739d473ff6e8319

SHA256
0696315ad3df3edd5426276c265bd13d8bd2a0d101548bcaedd82e2aebde655a

SHA512
35e1d214dfb4c7f078496e3e303aea152aa48f9db5b9aa188aeb82b541582ed77f60bfe8712836232b5aa31d3645edfc79b42c8f90e92e06778f21aa44971bff

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

Filesize
944B

MD5
781da0576417bf414dc558e5a315e2be

SHA1
215451c1e370be595f1c389f587efeaa93108b4c

SHA256
41a5aef8b0bbeea2766f40a7bba2c78322379f167c610f7055ccb69e7db030fe

SHA512
24e283aa30a2903ebe154dad49b26067a45e46fec57549ad080d3b9ec3f272044efaaed3822d067837f5521262192f466c47195ffe7f75f8c7c5dcf3159ea737

Download Submit
C:\Users\Admin\AppData\Local\System32.exe

Filesize
68KB

MD5
0815ae69147a697b5bae3d8d15cb7c75

SHA1
99a3b145ca36742aa0cbe0ef33829426f1dcf4ef

SHA256
4e986640769f16346bc1b6d9f5d033f4452c659b1275fc70bc736f1b2079828a

SHA512
992b165f6816f4711b3b0a6b7a8f83e4f58838abea7714df4bc8c30f7d9ed401d9b8f63296e3d13ca2d81894f754511628b042c5028feca4f54ca2b6bf70f0aa

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tvln2ukt.j4p.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/2340-1-0x0000000000EA0000-0x0000000000EB8000-memory.dmp

Filesize
96KB

Download
memory/2340-0-0x00007FFA9E893000-0x00007FFA9E895000-memory.dmp

Filesize
8KB

Download
memory/2340-55-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/2340-54-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-11-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-18-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-15-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-14-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-13-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-12-0x00007FFA9E890000-0x00007FFA9F352000-memory.dmp

Filesize
10.8MB

Download
memory/3812-2-0x000002012CA90000-0x000002012CAB2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads