xworm | f483197df60b8767d23fa820efaab0c6bcc3a4b02ebee3c8f1290ef699f6697e

General

Target

Windows Shell Experience Host.exe
Size

86KB
MD5

17f122079462e212871a1e2eb20eaff9
SHA1

349e4b54323acce835916a2bbe40dc9c5d30931f
SHA256

f483197df60b8767d23fa820efaab0c6bcc3a4b02ebee3c8f1290ef699f6697e
SHA512

95548cb30e9e45c4024be181253200d2188b622754158f6268fa09e41327dbb8468399a1b5ddd9d868413638bf1b9b18f6814586530f2c6a0a6cbd6311234e94
SSDEEP

768:NG9nICDiZGhCMhOB0s1SbiFG9Ox7h86BOMhUL02dC+IHZK:NgICDiZQRhVeFG9e7h86BOM+Nd6c

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

147.185.221.20:65300

Mutex

RMe1pa1UgjNcB2Un

Attributes

Install_directory
%AppData%
install_file
Windows Shell Experience Host.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral2/memory/4684-1-0x0000000000010000-0x000000000002A000-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
5000	powershell.exe
2428	powershell.exe
1308	powershell.exe
1724	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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Windows Shell Experience Host.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Shell Experience Host.lnk	Windows Shell Experience Host.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Windows Shell Experience Host.lnk	Windows Shell Experience Host.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-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Shell Experience Host = "C:\\Users\\Admin\\AppData\\Roaming\\Windows Shell Experience Host.exe"	Windows Shell Experience Host.exe

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
2	ip-api.com

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1308	powershell.exe
1308	powershell.exe
1724	powershell.exe
1724	powershell.exe
5000	powershell.exe
5000	powershell.exe
2428	powershell.exe
2428	powershell.exe
4684	Windows Shell Experience Host.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4684	Windows Shell Experience Host.exe
Token: SeDebugPrivilege	1308	powershell.exe
Token: SeDebugPrivilege	1724	powershell.exe
Token: SeDebugPrivilege	5000	powershell.exe
Token: SeDebugPrivilege	2428	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4684	Windows Shell Experience Host.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4684 wrote to memory of 1308	4684	Windows Shell Experience Host.exe	90
PID 4684 wrote to memory of 1308	4684	Windows Shell Experience Host.exe	90
PID 4684 wrote to memory of 1724	4684	Windows Shell Experience Host.exe	92
PID 4684 wrote to memory of 1724	4684	Windows Shell Experience Host.exe	92
PID 4684 wrote to memory of 5000	4684	Windows Shell Experience Host.exe	94
PID 4684 wrote to memory of 5000	4684	Windows Shell Experience Host.exe	94
PID 4684 wrote to memory of 2428	4684	Windows Shell Experience Host.exe	96
PID 4684 wrote to memory of 2428	4684	Windows Shell Experience Host.exe	96

C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.exe
"C:\Users\Admin\AppData\Local\Temp\Windows Shell Experience Host.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:4684
- 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\Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1308
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1724
- 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\Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5000
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Windows Shell Experience Host.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2428

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
d28a889fd956d5cb3accfbaf1143eb6f

SHA1
157ba54b365341f8ff06707d996b3635da8446f7

SHA256
21e5d7ccf80a293e6ba30ed728846ca19c929c52b96e2c8d34e27cd2234f1d45

SHA512
0b6d88deb9be85722e6a78d5886d49f2caf407a59e128d2b4ed74c1356f9928c40048a62731959f2460e9ff9d9feee311043d2a37abe3bb92c2b76a44281478c

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

Filesize
944B

MD5
e5663972c1caaba7088048911c758bf3

SHA1
3462dea0f9c2c16a9c3afdaef8bbb1f753c1c198

SHA256
9f7f29a4696876cadca3f14d7e43f9ede0c97fd64be3f5d94bda49a91b6a419e

SHA512
ff4e72c46cf083de62baa2ce2661555dd91b5f144294015f7b262fd4500cb67fe80e1871a82da63b607e3e9cef401f4b73c587bf1134637881ecad51aad1eddc

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

Filesize
944B

MD5
d41206a7f745843a3868859e2ce85144

SHA1
04f62b316901f55589b62c091e9391c3996b8453

SHA256
462e76831bff79b55be34d2a8f60156ecfa07254cff7fd495afdf0cee614d192

SHA512
16ddc9efe14f2c3fb7d602b10211d1e83830c5b7edbec468561a1f98b9851b17d348ee61e74bdd274347269d13bd5bd4af286a3f62e4fdce4516f1f7ae511083

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_dzktt4ri.vsw.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1308-5-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/1308-6-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/1308-7-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/1308-13-0x000001B14D7E0000-0x000001B14D802000-memory.dmp

Filesize
136KB

Download
memory/1308-20-0x000001B165CE0000-0x000001B165EFC000-memory.dmp

Filesize
2.1MB

Download
memory/1308-21-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/4684-0-0x00007FFA89BB3000-0x00007FFA89BB5000-memory.dmp

Filesize
8KB

Download
memory/4684-4-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/4684-3-0x00007FFA89BB3000-0x00007FFA89BB5000-memory.dmp

Filesize
8KB

Download
memory/4684-2-0x00007FFA89BB0000-0x00007FFA8A671000-memory.dmp

Filesize
10.8MB

Download
memory/4684-1-0x0000000000010000-0x000000000002A000-memory.dmp

Filesize
104KB

Download
memory/5000-45-0x0000025D311E0000-0x0000025D313FC000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads