xworm | 4aa25bafef5dc68516ade8745ae9fd6a3b6afe94585bcc8ade397a0f465efe69

General

Target

Microsoft Edge.exe
Size

204KB
MD5

2f8eec53d54849f91c554d3f60312a72
SHA1

c75e269e347f6773eb3261408a24165f6e4d004e
SHA256

4aa25bafef5dc68516ade8745ae9fd6a3b6afe94585bcc8ade397a0f465efe69
SHA512

c711f0425224971128844fa570f510102b1b5e818c57bc71a5f6c49a52b266b122781886b2f3050b4172a755379726062f822aaaf7c452d0d1fcc005805109aa
SSDEEP

3072:K6TnncjjDb+bQkJLkkOJOebvGRUGKXs+S++7KFSbxeY+qDDrMP:XcHDyb51kjbvPGqStKEbxI

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:1488

Attributes

Install_directory
%AppData%
install_file
Microsoft Edge.exe

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/232-1-0x0000000000C00000-0x0000000000C38000-memory.dmp	family_xworm

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

4560 powershell.exe
4444 powershell.exe
3516 powershell.exe
1988 powershell.exe

pid	process
4560	powershell.exe
4444	powershell.exe
3516	powershell.exe
1988	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:

Microsoft Edge.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\Control Panel\International\Geo\Nation	Microsoft Edge.exe

Drops startup file 2 IoCs

Processes:

Microsoft Edge.exe

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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Microsoft Edge.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-540404634-651139247-2967210625-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Microsoft Edge = "C:\\Users\\Admin\\AppData\\Roaming\\Microsoft Edge.exe"	Microsoft Edge.exe

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeMicrosoft Edge.exe

pid	process
1988	powershell.exe
1988	powershell.exe
4560	powershell.exe
4560	powershell.exe
4444	powershell.exe
4444	powershell.exe
3516	powershell.exe
3516	powershell.exe
232	Microsoft Edge.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Microsoft Edge.exepowershell.exepowershell.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	232	Microsoft Edge.exe
Token: SeDebugPrivilege	1988	powershell.exe
Token: SeDebugPrivilege	4560	powershell.exe
Token: SeDebugPrivilege	4444	powershell.exe
Token: SeDebugPrivilege	3516	powershell.exe
Token: SeDebugPrivilege	232	Microsoft Edge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Microsoft Edge.exe

pid process

232 Microsoft Edge.exe

pid	process
232	Microsoft Edge.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

Microsoft Edge.exe

description	pid	process	target process
PID 232 wrote to memory of 1988	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 1988	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 4560	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 4560	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 4444	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 4444	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 3516	232	Microsoft Edge.exe	powershell.exe
PID 232 wrote to memory of 3516	232	Microsoft Edge.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe
"C:\Users\Admin\AppData\Local\Temp\Microsoft Edge.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:232

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\Microsoft Edge.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1988

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Microsoft Edge.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4560

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\Microsoft Edge.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4444

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Microsoft Edge.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3516

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
ce4540390cc4841c8973eb5a3e9f4f7d

SHA1
2293f30a6f4c9538bc5b06606c10a50ab4ecef8e

SHA256
e834e1da338b9644d538cefd70176768816da2556939c1255d386931bd085105

SHA512
2a3e466cb5a81d2b65256053b768a98321eb3e65ff46353eefc9864f14a391748116f050e7482ddd73a51575bf0a6fc5c673023dade62dbd8b174442bae1cc6b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sten1x4p.0gg.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/232-1-0x0000000000C00000-0x0000000000C38000-memory.dmp

Filesize
224KB

Download
memory/232-59-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/232-0-0x00007FFC70883000-0x00007FFC70885000-memory.dmp

Filesize
8KB

Download
memory/232-58-0x00007FFC70883000-0x00007FFC70885000-memory.dmp

Filesize
8KB

Download
memory/232-57-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-12-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-18-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-15-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-14-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-13-0x00007FFC70880000-0x00007FFC71341000-memory.dmp

Filesize
10.8MB

Download
memory/1988-2-0x000001D66D4B0000-0x000001D66D4D2000-memory.dmp

Filesize
136KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads