xworm | 25065c211e05d389663fc109ba4a6a2d1b87eaf5de07a6fca4d7de1cfb3ae5a2

General

Target

Ro-exec/loader.exe
Size

72KB
MD5

5b7d9b25c07cfa6221c9814d1a0bff6d
SHA1

ba045627fd22184b26af329361112eb23dc73c64
SHA256

241b2b0a9a5007860f27507bfdeb5be3c427f42eaf00f49ef6d8b43ca99eb89d
SHA512

1fc32109dd9ce6358dd8db8321875d0bd6beebc44ec0869ebbbfcdf600ed9391738f31045255ba190a6501519f4259c22188f145c58cafa86ab858b9e9f10114
SSDEEP

1536:e7h6H0wE+uyryCxD+fen9bHl6gZnfsd6oz7OFPKZGNQ:e7W0X+uyzD+U9bHYR7OFCyQ

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Attributes

Install_directory
%AppData%
install_file
NVIDIAFrameview.exe
pastebin_url
https://pastebin.com/raw/UWpQULMP

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral3/memory/4664-0-0x0000000000F90000-0x0000000000FA8000-memory.dmp	family_xworm
behavioral3/files/0x000c00000002342a-71.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

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-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	loader.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3712	NVIDIAFrameview.exe
4212	NVIDIAFrameview.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-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\NVIDIAFrameview = "C:\\Users\\Admin\\AppData\\Roaming\\NVIDIAFrameview.exe"	loader.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
26	pastebin.com
27	pastebin.com
29	0.tcp.eu.ngrok.io

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
2252	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
4664	loader.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
864	powershell.exe
864	powershell.exe
2720	powershell.exe
2720	powershell.exe
3008	powershell.exe
3008	powershell.exe
3424	powershell.exe
3424	powershell.exe
4664	loader.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4664	loader.exe
Token: SeDebugPrivilege	864	powershell.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	3008	powershell.exe
Token: SeDebugPrivilege	3424	powershell.exe
Token: SeDebugPrivilege	4664	loader.exe
Token: SeDebugPrivilege	3712	NVIDIAFrameview.exe
Token: SeDebugPrivilege	4212	NVIDIAFrameview.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4664	loader.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4664 wrote to memory of 864	4664	loader.exe	88
PID 4664 wrote to memory of 864	4664	loader.exe	88
PID 4664 wrote to memory of 2720	4664	loader.exe	90
PID 4664 wrote to memory of 2720	4664	loader.exe	90
PID 4664 wrote to memory of 3008	4664	loader.exe	92
PID 4664 wrote to memory of 3008	4664	loader.exe	92
PID 4664 wrote to memory of 3424	4664	loader.exe	94
PID 4664 wrote to memory of 3424	4664	loader.exe	94
PID 4664 wrote to memory of 2252	4664	loader.exe	96
PID 4664 wrote to memory of 2252	4664	loader.exe	96

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\Ro-exec\loader.exe
"C:\Users\Admin\AppData\Local\Temp\Ro-exec\loader.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: AddClipboardFormatListener
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4664
- 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\Ro-exec\loader.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:864
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'loader.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2720
- 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\NVIDIAFrameview.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3008
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'NVIDIAFrameview.exe'
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3424
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "NVIDIAFrameview" /tr "C:\Users\Admin\AppData\Roaming\NVIDIAFrameview.exe"
  2⤵
  - Creates scheduled task(s)
  PID:2252

C:\Users\Admin\AppData\Roaming\NVIDIAFrameview.exe
C:\Users\Admin\AppData\Roaming\NVIDIAFrameview.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3712

C:\Users\Admin\AppData\Roaming\NVIDIAFrameview.exe
C:\Users\Admin\AppData\Roaming\NVIDIAFrameview.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4212

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

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

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\NVIDIAFrameview.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
3f8ce8430ac42502b8ed95f1edfca0b8

SHA1
8d04db80026713e5c54b5f1eaa2b11b8134c4625

SHA256
a94fc6aec9036a344b3b6492ab8e9d30903a6d65fa170c6e6b163faf0c76a58c

SHA512
1e2c311c2775452bed3b95331c3de5dfebfcf2ae78286a93e34ff533116c33fcaa0624186c9ab861e1be2b20d3b5831a9bd645ab2162f9feb218c8822a61af73

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

Filesize
944B

MD5
e58749a7a1826f6ea62df1e2ef63a32b

SHA1
c0bca21658b8be4f37b71eec9578bfefa44f862d

SHA256
0e1f0e684adb40a5d0668df5fed007c9046137d7ae16a1f2f343b139d5f9bc93

SHA512
4cf45b2b11ab31e7f67fff286b29d50ed28cd6043091144c5c0f1348b5f5916ed7479cf985595e6f096b586ab93b4b5dce612f688049b8366a2dd91863e98b70

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gjhwjopa.cbu.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
72KB

MD5
5b7d9b25c07cfa6221c9814d1a0bff6d

SHA1
ba045627fd22184b26af329361112eb23dc73c64

SHA256
241b2b0a9a5007860f27507bfdeb5be3c427f42eaf00f49ef6d8b43ca99eb89d

SHA512
1fc32109dd9ce6358dd8db8321875d0bd6beebc44ec0869ebbbfcdf600ed9391738f31045255ba190a6501519f4259c22188f145c58cafa86ab858b9e9f10114

Download Submit
memory/864-14-0x000001D2CCB60000-0x000001D2CCB70000-memory.dmp

Filesize
64KB

Download
memory/864-7-0x000001D2CCA30000-0x000001D2CCA52000-memory.dmp

Filesize
136KB

Download
memory/864-17-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/864-13-0x000001D2CCB60000-0x000001D2CCB70000-memory.dmp

Filesize
64KB

Download
memory/864-12-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/2720-20-0x000002A72C0D0000-0x000002A72C0E0000-memory.dmp

Filesize
64KB

Download
memory/2720-19-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/2720-21-0x000002A72C0D0000-0x000002A72C0E0000-memory.dmp

Filesize
64KB

Download
memory/2720-33-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3008-36-0x0000026A7FB50000-0x0000026A7FB60000-memory.dmp

Filesize
64KB

Download
memory/3008-35-0x0000026A7FB50000-0x0000026A7FB60000-memory.dmp

Filesize
64KB

Download
memory/3008-48-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3008-34-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3424-55-0x0000022F1A590000-0x0000022F1A5A0000-memory.dmp

Filesize
64KB

Download
memory/3424-60-0x0000022F1A590000-0x0000022F1A5A0000-memory.dmp

Filesize
64KB

Download
memory/3424-63-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3424-49-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3712-73-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/3712-75-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/4212-78-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/4212-79-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/4664-0-0x0000000000F90000-0x0000000000FA8000-memory.dmp

Filesize
96KB

Download
memory/4664-68-0x000000001BC20000-0x000000001BC30000-memory.dmp

Filesize
64KB

Download
memory/4664-69-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download
memory/4664-1-0x00007FFCD2280000-0x00007FFCD2D41000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads