xworm | 906d56dada15af2cd0f497da8ca1b4d03ebd03c8d389925b21fd3a331b4f25bf

General

Target

Xeno.exe
Size

36KB
MD5

732dadd84533cd1638d710f431788456
SHA1

0c26e4a866f531056187cb49c129dfa6fd48f517
SHA256

906d56dada15af2cd0f497da8ca1b4d03ebd03c8d389925b21fd3a331b4f25bf
SHA512

6783a841bf881ede26be331a032584bf78f1d93a2963dde2836b3c7c2c127c31c778ded40d95b30d5a14ff4afa194403c544d6fbb26c7468ad215cb9d8fe3234
SSDEEP

768:qMr+VtK66pUb56RJR2umOe6W4oJ5Fyw99VPq6KO/hEy4VJS:qy+P6pUb56Ruuu6GTFr99Jq6KO/OjJS

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

february-surrey.gl.at.ply.gg:7000

Mutex

M6UqD69FyiepuCHR

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/3984-1-0x0000000000030000-0x0000000000040000-memory.dmp	family_xworm
behavioral1/files/0x002000000002ab19-56.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
4052	powershell.exe
1504	powershell.exe
2324	powershell.exe
2696	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2472	System User
4356	System User
3560	System User

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-1-5-21-4249425805-3408538557-1766626484-1000\Software\Microsoft\Windows\CurrentVersion\Run\System User = "C:\\Users\\Admin\\AppData\\Roaming\\System User"	Xeno.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
1296	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4052	powershell.exe
4052	powershell.exe
1504	powershell.exe
1504	powershell.exe
2324	powershell.exe
2324	powershell.exe
2696	powershell.exe
2696	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3984	Xeno.exe
Token: SeDebugPrivilege	4052	powershell.exe
Token: SeDebugPrivilege	1504	powershell.exe
Token: SeDebugPrivilege	2324	powershell.exe
Token: SeDebugPrivilege	2696	powershell.exe
Token: SeDebugPrivilege	3984	Xeno.exe
Token: SeDebugPrivilege	2472	System User
Token: SeDebugPrivilege	4356	System User
Token: SeDebugPrivilege	3560	System User

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3984 wrote to memory of 4052	3984	Xeno.exe	77
PID 3984 wrote to memory of 4052	3984	Xeno.exe	77
PID 3984 wrote to memory of 1504	3984	Xeno.exe	79
PID 3984 wrote to memory of 1504	3984	Xeno.exe	79
PID 3984 wrote to memory of 2324	3984	Xeno.exe	81
PID 3984 wrote to memory of 2324	3984	Xeno.exe	81
PID 3984 wrote to memory of 2696	3984	Xeno.exe	83
PID 3984 wrote to memory of 2696	3984	Xeno.exe	83
PID 3984 wrote to memory of 1296	3984	Xeno.exe	85
PID 3984 wrote to memory of 1296	3984	Xeno.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\Xeno.exe
"C:\Users\Admin\AppData\Local\Temp\Xeno.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3984
- 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\Xeno.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4052
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xeno.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 -ExclusionPath 'C:\Users\Admin\AppData\Roaming\System User'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2324
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'System User'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2696
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "System User" /tr "C:\Users\Admin\AppData\Roaming\System User"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:1296

C:\Users\Admin\AppData\Roaming\System User
"C:\Users\Admin\AppData\Roaming\System User"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2472

C:\Users\Admin\AppData\Roaming\System User
"C:\Users\Admin\AppData\Roaming\System User"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4356

C:\Users\Admin\AppData\Roaming\System User
"C:\Users\Admin\AppData\Roaming\System User"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3560

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\System User.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
2e8eb51096d6f6781456fef7df731d97

SHA1
ec2aaf851a618fb43c3d040a13a71997c25bda43

SHA256
96bfd9dd5883329927fe8c08b8956355a1a6ceb30ceeb5d4252b346df32bc864

SHA512
0a73dc9a49f92d9dd556c2ca2e36761890b3538f355ee1f013e7cf648d8c4d065f28046cd4a167db3dea304d1fbcbcea68d11ce6e12a3f20f8b6c018a60422d2

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

Filesize
944B

MD5
052b734e3d0b49bccde40def527c10df

SHA1
2ac7c9bd7dc7bd54699fd06252a89a963e1c1ec0

SHA256
d51b94b595a5bee567d89011dc8d97f6210a7911828e5a24172708d5a177f65f

SHA512
bbe94350f51a4029f44631e5bb6658d9583d46011db3ca3159a21b179ab7dc7b200a27ccdf34897fdcba890acec2cdb84a2c1ba0cd95360478e38e911f56f4ba

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

Filesize
944B

MD5
b8858c1312fd419c51df9a8a7654bbf0

SHA1
9a0ef19d9d1470f77b96ac9ab2613cd4d6a2f0f9

SHA256
8b8956bda78c94508b509771d05b88cbdeb3ae8fb2fd2dee091bc68905a8142f

SHA512
e13a46c898c0293303a92834ae3c6f9fb4e65c59e3112d42f1cc458078fa35d5dfa54c7bd8bbfc7f245bdfcd6b23490e191c7a932929e0a1cc9a29c342be196c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ebvvm2cm.kjg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\System User

Filesize
36KB

MD5
732dadd84533cd1638d710f431788456

SHA1
0c26e4a866f531056187cb49c129dfa6fd48f517

SHA256
906d56dada15af2cd0f497da8ca1b4d03ebd03c8d389925b21fd3a331b4f25bf

SHA512
6783a841bf881ede26be331a032584bf78f1d93a2963dde2836b3c7c2c127c31c778ded40d95b30d5a14ff4afa194403c544d6fbb26c7468ad215cb9d8fe3234

Download Submit
memory/3984-1-0x0000000000030000-0x0000000000040000-memory.dmp

Filesize
64KB

Download
memory/3984-0-0x00007FFD38193000-0x00007FFD38195000-memory.dmp

Filesize
8KB

Download
memory/3984-55-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/3984-54-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/3984-53-0x00007FFD38193000-0x00007FFD38195000-memory.dmp

Filesize
8KB

Download
memory/4052-11-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-18-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-15-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-14-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-13-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-12-0x00007FFD38190000-0x00007FFD38C52000-memory.dmp

Filesize
10.8MB

Download
memory/4052-10-0x00000215FB970000-0x00000215FB992000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads