xworm | 1ff08d4cbe1a41c10692941c7835b93ea5738057dc381cf4704136436911df05

General

Target

msedge_visual_render.exe
Size

188KB
MD5

e796b778b392f06de4d340ec0f88b4cc
SHA1

32561bf3b022aef8a62bac3e820ef7e3bc648f57
SHA256

1ff08d4cbe1a41c10692941c7835b93ea5738057dc381cf4704136436911df05
SHA512

dcdbeb8d1720b2bfe8ce8c2311414b71ec090eb94db53d379c08cbf7b17a25ac4bc9488315e867406bb1661a76df223c953f01c7d40997fdf9ccb20daaf4c8c7
SSDEEP

3072:2rhv4AbmL4mkbrz9EO7PvJKRUGKXs+S++7KFSbxeY+qDDrMn:2r7bmclbX3ZGqStKEbxI

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

23.ip.gl.ply.gg:57660

Attributes

Install_directory
%AppData%
install_file
msedge.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/1124-1-0x0000000000D20000-0x0000000000D54000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
4980	powershell.exe
316	powershell.exe
900	powershell.exe
1232	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	msedge_visual_render.exe

Drops startup file 2 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\msedge.lnk	msedge_visual_render.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\msedge.lnk	msedge_visual_render.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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\msedge = "C:\\Users\\Admin\\AppData\\Roaming\\msedge.exe"	msedge_visual_render.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4980	powershell.exe
4980	powershell.exe
316	powershell.exe
316	powershell.exe
900	powershell.exe
900	powershell.exe
1232	powershell.exe
1232	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1124	msedge_visual_render.exe
Token: SeDebugPrivilege	4980	powershell.exe
Token: SeDebugPrivilege	316	powershell.exe
Token: SeDebugPrivilege	900	powershell.exe
Token: SeDebugPrivilege	1232	powershell.exe
Token: SeDebugPrivilege	1124	msedge_visual_render.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 1124 wrote to memory of 4980	1124	msedge_visual_render.exe	88
PID 1124 wrote to memory of 4980	1124	msedge_visual_render.exe	88
PID 1124 wrote to memory of 316	1124	msedge_visual_render.exe	90
PID 1124 wrote to memory of 316	1124	msedge_visual_render.exe	90
PID 1124 wrote to memory of 900	1124	msedge_visual_render.exe	94
PID 1124 wrote to memory of 900	1124	msedge_visual_render.exe	94
PID 1124 wrote to memory of 1232	1124	msedge_visual_render.exe	96
PID 1124 wrote to memory of 1232	1124	msedge_visual_render.exe	96

C:\Users\Admin\AppData\Local\Temp\msedge_visual_render.exe
"C:\Users\Admin\AppData\Local\Temp\msedge_visual_render.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1124
- 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\msedge_visual_render.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4980
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge_visual_render.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:316
- 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\msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:900
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1232

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

1

T1012

System Information Discovery

2

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
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
944B

MD5
a2c8179aaa149c0b9791b73ce44c04d1

SHA1
703361b0d43ec7f669304e7c0ffbbfdeb1e484ff

SHA256
c1d30342a40a2b6e7553da30ceb85754d33820f6fbb3bbbed1ceb30d6390de4a

SHA512
2e201dd457d055baad86f68c15bcc7beb48d6dc2ffc10db7f304eb93f697e7b45991cbde857d25da2c9c60c23f3e13df8b5ed5809c1753737a23096e296cc9e3

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

Filesize
944B

MD5
67e8893616f805af2411e2f4a1411b2a

SHA1
39bf1e1a0ddf46ce7c136972120f512d92827dcd

SHA256
ca0dfe104c1bf27f7e01999fcdabc16c6400c3da937c832c26bdbca322381d31

SHA512
164e911a9935e75c8be1a6ec3d31199a16ba2a1064da6c09d771b2a38dd7fddd142301ef55d67d90f306d3a454a1ce7b72e129ea42e44500b9b8c623a8d98b4d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_3yp51dqi.jua.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1124-0-0x00007FFC4B1C3000-0x00007FFC4B1C5000-memory.dmp

Filesize
8KB

Download
memory/1124-1-0x0000000000D20000-0x0000000000D54000-memory.dmp

Filesize
208KB

Download
memory/1124-57-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/1124-58-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-13-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-14-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-15-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-18-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-12-0x00007FFC4B1C0000-0x00007FFC4BC81000-memory.dmp

Filesize
10.8MB

Download
memory/4980-2-0x000002BB202C0000-0x000002BB202E2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads