xworm | 2a941fc746bc1d50f9d84a2936deb146c8501c350819a02fdddf92a7cb4ad275

General

Target

NeptuneRat V4.0.exe
Size

291KB
MD5

3c307836e2b7e74b428306fe1850361b
SHA1

b01e94d0d986e225b33d6764c78960a79323ac2f
SHA256

2a941fc746bc1d50f9d84a2936deb146c8501c350819a02fdddf92a7cb4ad275
SHA512

ca985e7d9b5660ab4beedd5bffc5e91f091a5e841ff53cb386b0af75765f56beac16f20819611ce0f72a81bb6d7ea08ae386efad2ad1c001cf7e96799f3ae2fc
SSDEEP

6144:vS25OwbrqZhMV3kYIklbHmiI8o2oPE7zz83/C8bZlcx:vXbrehMV3QWLYA7zz868bZ

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

3.0

C2

should-reductions.gl.at.ply.gg:24817

Attributes

Install_directory
%AppData%
install_file
NoiseSup.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/1208-40-0x000000001AD80000-0x000000001AD9A000-memory.dmp	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 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
4320	powershell.exe
2120	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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	NeptuneRat V4.0.exe

Executes dropped EXE 1 IoCs

pid	Process
1208	WUDFHost.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-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WUDFHost = "C:\\Users\\Admin\\AppData\\Roaming\\WUDFHost.exe"	WUDFHost.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
8	discord.com
9	discord.com

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

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
824	timeout.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
4320	powershell.exe
4320	powershell.exe
2120	powershell.exe
2120	powershell.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	3668	NeptuneRat V4.0.exe
Token: SeBackupPrivilege	4844	vssvc.exe
Token: SeRestorePrivilege	4844	vssvc.exe
Token: SeAuditPrivilege	4844	vssvc.exe
Token: SeDebugPrivilege	4320	powershell.exe
Token: SeDebugPrivilege	2120	powershell.exe
Token: SeDebugPrivilege	1208	WUDFHost.exe
Token: SeDebugPrivilege	1208	WUDFHost.exe
Token: SeDebugPrivilege	1208	WUDFHost.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 3668 wrote to memory of 4320	3668	NeptuneRat V4.0.exe	87
PID 3668 wrote to memory of 4320	3668	NeptuneRat V4.0.exe	87
PID 3668 wrote to memory of 2120	3668	NeptuneRat V4.0.exe	89
PID 3668 wrote to memory of 2120	3668	NeptuneRat V4.0.exe	89
PID 3668 wrote to memory of 4176	3668	NeptuneRat V4.0.exe	92
PID 3668 wrote to memory of 4176	3668	NeptuneRat V4.0.exe	92
PID 4176 wrote to memory of 824	4176	cmd.exe	94
PID 4176 wrote to memory of 824	4176	cmd.exe	94

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
Uses Volume Shadow Copy service COM API
The Volume Shadow Copy service is used to manage backups/snapshots.
ransomware

C:\Users\Admin\AppData\Local\Temp\NeptuneRat V4.0.exe
"C:\Users\Admin\AppData\Local\Temp\NeptuneRat V4.0.exe"
1⤵
- Checks computer location settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3668
- 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\WUDFHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4320
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WUDFHost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2120
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4176
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:824

C:\Windows\system32\vssvc.exe
C:\Windows\system32\vssvc.exe
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:4844

C:\Users\Admin\AppData\Roaming\WUDFHost.exe
C:\Users\Admin\AppData\Roaming\WUDFHost.exe
1⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
PID:1208

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

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_toxwe21z.nmn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB98C.tmp.bat

Filesize
167B

MD5
8eae06f2b52e1f170c783a8510f8f61d

SHA1
ee5ca90bfa2e788c4953a88eeafea76a1509770f

SHA256
5e390af6213499e24d540af577aaf1076325e94b56d8f8d02ca5700d97ebcd82

SHA512
3f1cf1768126c836ea38947114276dc4ff509c31c4bc9abdc198cf558c715984cff4da3ef1a6d8325d30b5888801c3d15df805a3c8538fc4662a6a3611c39c5f

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

Filesize
291KB

MD5
3c307836e2b7e74b428306fe1850361b

SHA1
b01e94d0d986e225b33d6764c78960a79323ac2f

SHA256
2a941fc746bc1d50f9d84a2936deb146c8501c350819a02fdddf92a7cb4ad275

SHA512
ca985e7d9b5660ab4beedd5bffc5e91f091a5e841ff53cb386b0af75765f56beac16f20819611ce0f72a81bb6d7ea08ae386efad2ad1c001cf7e96799f3ae2fc

Download Submit
memory/1208-40-0x000000001AD80000-0x000000001AD9A000-memory.dmp

Filesize
104KB

Download
memory/3668-1-0x0000000000890000-0x00000000008DE000-memory.dmp

Filesize
312KB

Download
memory/3668-2-0x00007FFA48870000-0x00007FFA49331000-memory.dmp

Filesize
10.8MB

Download
memory/3668-0-0x00007FFA48873000-0x00007FFA48875000-memory.dmp

Filesize
8KB

Download
memory/3668-39-0x00007FFA48870000-0x00007FFA49331000-memory.dmp

Filesize
10.8MB

Download
memory/4320-3-0x00007FFA48870000-0x00007FFA49331000-memory.dmp

Filesize
10.8MB

Download
memory/4320-18-0x00007FFA48870000-0x00007FFA49331000-memory.dmp

Filesize
10.8MB

Download
memory/4320-14-0x00007FFA48870000-0x00007FFA49331000-memory.dmp

Filesize
10.8MB

Download
memory/4320-15-0x0000022324B10000-0x0000022324B32000-memory.dmp

Filesize
136KB

Download
memory/4320-10-0x00007FFA48870000-0x00007FFA49331000-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