xworm | 90c52c013f848e753497323f4921ffb9f8e6c3704daad58ea2940426a4da0bd9

General

Target

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Size

70KB
MD5

109adf5a32829b151d536e30a81ee96b
SHA1

dc23006a97e7d5bc34eedec563432e63ed6a226a
SHA256

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311
SHA512

74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5
SSDEEP

1536:QeYZA06UMG73jWw9o5zeS6LQR9bAayaIMbckM6mfOWcNFOfab:QfZxfMGTFXS6LQR9bAaZbfsfOPMab

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

involved-hurt.gl.at.ply.gg:35238

Attributes

Install_directory
%LocalAppData%
install_file
WindowsHealthSystem.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/memory/396-0-0x0000000000010000-0x0000000000028000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe	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

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

Drops startup file 2 IoCs

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsHealthSystem.lnk	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\WindowsHealthSystem.lnk	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

Executes dropped EXE 3 IoCs

Processes:

WindowsHealthSystem.exeWindowsHealthSystem.exeWindowsHealthSystem.exe

pid process

5028 WindowsHealthSystem.exe
2188 WindowsHealthSystem.exe
4396 WindowsHealthSystem.exe

pid	process
5028	WindowsHealthSystem.exe
2188	WindowsHealthSystem.exe
4396	WindowsHealthSystem.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsHealthSystem = "C:\\Users\\Admin\\AppData\\Local\\WindowsHealthSystem.exe"	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

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

Processes:

schtasks.exe

pid process

4368 schtasks.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

pid process

396 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

pid	process
4368	schtasks.exe

pid	process
396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

pid	process
4540	powershell.exe
4540	powershell.exe
2836	powershell.exe
2836	powershell.exe
4364	powershell.exe
4364	powershell.exe
4432	powershell.exe
4432	powershell.exe
396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exepowershell.exepowershell.exepowershell.exepowershell.exeWindowsHealthSystem.exeWindowsHealthSystem.exeWindowsHealthSystem.exe

description	pid	process
Token: SeDebugPrivilege	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Token: SeDebugPrivilege	4540	powershell.exe
Token: SeDebugPrivilege	2836	powershell.exe
Token: SeDebugPrivilege	4364	powershell.exe
Token: SeDebugPrivilege	4432	powershell.exe
Token: SeDebugPrivilege	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
Token: SeDebugPrivilege	5028	WindowsHealthSystem.exe
Token: SeDebugPrivilege	2188	WindowsHealthSystem.exe
Token: SeDebugPrivilege	4396	WindowsHealthSystem.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

pid process

396 4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

pid	process
396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

Suspicious use of WriteProcessMemory 10 IoCs

Processes:

4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe

description	pid	process	target process
PID 396 wrote to memory of 4540	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4540	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 2836	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 2836	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4364	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4364	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4432	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4432	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	powershell.exe
PID 396 wrote to memory of 4368	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	schtasks.exe
PID 396 wrote to memory of 4368	396	4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe	schtasks.exe

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\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe
"C:\Users\Admin\AppData\Local\Temp\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.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:396

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\4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4540

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess '4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2836

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\WindowsHealthSystem.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4364

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'WindowsHealthSystem.exe'
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4432

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "WindowsHealthSystem" /tr "C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe"
2⤵
- Creates scheduled task(s)
PID:4368

C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5028

C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2188

C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4396

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\WindowsHealthSystem.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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

MD5
eb1ad317bd25b55b2bbdce8a28a74a94

SHA1
98a3978be4d10d62e7411946474579ee5bdc5ea6

SHA256
9e94e7c9ac6134ee30e79498558aa1a5a1ac79a643666c3f8922eed215dd3a98

SHA512
d011f266c0240d84470c0f9577cd9e4927309bd19bb38570ca9704ed8e1d159f9bea982a59d3eefef72ce7a10bd81208b82e88ef57c7af587f7437a89769adc0

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

MD5
d8cb3e9459807e35f02130fad3f9860d

SHA1
5af7f32cb8a30e850892b15e9164030a041f4bd6

SHA256
2b139c74072ccbdaa17b950f32a6dbc934dfb7af9973d97c9b0d9c498012ba68

SHA512
045239ba31367fbdd59e883f74eafc05724e23bd6e8f0c1e7171ea2496a497eb9e0cfcb57285bb81c4d569daadba43d6ef64c626ca48f1e2a59e8d97f0cc9184

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_04iasfgh.4gq.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\WindowsHealthSystem.exe
Filesize
70KB

MD5
109adf5a32829b151d536e30a81ee96b

SHA1
dc23006a97e7d5bc34eedec563432e63ed6a226a

SHA256
4b9d898379e5dd1d260c1706aa04aa8270994835a523bb83695062d92c830311

SHA512
74e7fb13e195dcf6b8ed0f40c034925c3762b2e0c43c8faede99ce79a4b07966ff5336769db3f9f5bb4c0478cefc879d59b43d5ded5bda3e75d19bd0a1e9e9e5

Download Submit
memory/396-0-0x0000000000010000-0x0000000000028000-memory.dmp

Filesize
96KB

Download
memory/396-68-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/396-67-0x000000001AB70000-0x000000001AB80000-memory.dmp

Filesize
64KB

Download
memory/396-74-0x000000001AB70000-0x000000001AB80000-memory.dmp

Filesize
64KB

Download
memory/396-1-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/2188-78-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/2188-79-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/2836-32-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/2836-20-0x00000252A5990000-0x00000252A59A0000-memory.dmp

Filesize
64KB

Download
memory/2836-19-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4364-44-0x000002BBEDE30000-0x000002BBEDE40000-memory.dmp

Filesize
64KB

Download
memory/4364-43-0x000002BBEDE30000-0x000002BBEDE40000-memory.dmp

Filesize
64KB

Download
memory/4364-42-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4364-47-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4396-82-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4396-81-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4432-62-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4432-48-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4432-49-0x0000022587040000-0x0000022587050000-memory.dmp

Filesize
64KB

Download
memory/4432-50-0x0000022587040000-0x0000022587050000-memory.dmp

Filesize
64KB

Download
memory/4540-4-0x000001E7BD710000-0x000001E7BD720000-memory.dmp

Filesize
64KB

Download
memory/4540-14-0x000001E7BD710000-0x000001E7BD720000-memory.dmp

Filesize
64KB

Download
memory/4540-2-0x000001E7BF890000-0x000001E7BF8B2000-memory.dmp

Filesize
136KB

Download
memory/4540-3-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/4540-17-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/5028-71-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download
memory/5028-73-0x00007FFF2F9A0000-0x00007FFF30461000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads