xworm | 12bc7739ff2e83c94c4ccff18eba664e1697ffb9db986c446c8fb35a663c3a00

General

Target

runtime/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

Processes:

resource	yara_rule
behavioral1/memory/1668-1-0x0000000000D60000-0x0000000000D94000-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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

636 powershell.exe
5052 powershell.exe
3664 powershell.exe
1072 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

Processes:

msedge_visual_render.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	msedge_visual_render.exe

Drops startup file 2 IoCs

Processes:

msedge_visual_render.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\msedge.lnk	msedge_visual_render.exe
File opened for modification	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

Processes:

msedge_visual_render.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000\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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid	process
636	powershell.exe
636	powershell.exe
5052	powershell.exe
5052	powershell.exe
3664	powershell.exe
3664	powershell.exe
1072	powershell.exe
1072	powershell.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

msedge_visual_render.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	1668	msedge_visual_render.exe
Token: SeDebugPrivilege	636	powershell.exe
Token: SeDebugPrivilege	5052	powershell.exe
Token: SeDebugPrivilege	3664	powershell.exe
Token: SeDebugPrivilege	1072	powershell.exe
Token: SeDebugPrivilege	1668	msedge_visual_render.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

msedge_visual_render.exe

description	pid	process	target process
PID 1668 wrote to memory of 636	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 636	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 5052	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 5052	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 3664	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 3664	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 1072	1668	msedge_visual_render.exe	powershell.exe
PID 1668 wrote to memory of 1072	1668	msedge_visual_render.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\runtime\msedge_visual_render.exe
"C:\Users\Admin\AppData\Local\Temp\runtime\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:1668
- 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\runtime\msedge_visual_render.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:636
- 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:5052
- 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:3664
- 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:1072

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
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_x3cuwl4d.qqj.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/636-12-0x00007FFEEE0C0000-0x00007FFEEEB81000-memory.dmp

Filesize
10.8MB

Download
memory/636-13-0x00007FFEEE0C0000-0x00007FFEEEB81000-memory.dmp

Filesize
10.8MB

Download
memory/636-14-0x00007FFEEE0C0000-0x00007FFEEEB81000-memory.dmp

Filesize
10.8MB

Download
memory/636-17-0x00007FFEEE0C0000-0x00007FFEEEB81000-memory.dmp

Filesize
10.8MB

Download
memory/636-2-0x0000026771D30000-0x0000026771D52000-memory.dmp

Filesize
136KB

Download
memory/1668-0-0x00007FFEEE0C3000-0x00007FFEEE0C5000-memory.dmp

Filesize
8KB

Download
memory/1668-1-0x0000000000D60000-0x0000000000D94000-memory.dmp

Filesize
208KB

Download
memory/1668-56-0x00007FFEEE0C3000-0x00007FFEEE0C5000-memory.dmp

Filesize
8KB

Download
memory/1668-57-0x00007FFEEE0C0000-0x00007FFEEEB81000-memory.dmp

Filesize
10.8MB

Download
memory/1668-58-0x00007FFEEE0C0000-0x00007FFEEEB81000-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