xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

Analysis

max time kernel
1800s
max time network
1172s
platform
windows10-2004_x64
resource
win10v2004-20240611-en
resource tags

arch:x64arch:x86image:win10v2004-20240611-enlocale:en-usos:windows10-2004-x64system
submitted
01/07/2024, 09:10

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General

Target

sv.exe
Size

63KB
MD5

c095a62b525e62244cad230e696028cf
SHA1

67232c186d3efe248b540f1f2fe3382770b5074a
SHA256

a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6
SHA512

5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0
SSDEEP

1536:unjFXblMp3wgDkbivVSm16KTOKjLIJXc:unrAwgDkbicmbOKj0JM

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

amount-acceptance.gl.at.ply.gg:7420

Attributes

Install_directory
%ProgramData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/memory/4280-1-0x00000000008E0000-0x00000000008F6000-memory.dmp	family_xworm
behavioral4/files/0x000900000002294f-58.dat	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

pid	Process
4192	powershell.exe
436	powershell.exe
1540	powershell.exe
1112	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-1-5-21-3169499791-3545231813-3156325206-1000\Control Panel\International\Geo\Nation	sv.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 6 IoCs

pid	Process
3092	svhost.exe
4480	svhost.exe
2244	svhost.exe
5108	svhost.exe
2860	svhost.exe
2628	svhost.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-1-5-21-3169499791-3545231813-3156325206-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svhost = "C:\\ProgramData\\svhost.exe"	sv.exe

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

System Information Discovery
T1082

Modifies data under HKEY_USERS 15 IoCs

description	ioc	Process
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglowBalance = "10"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\AccentColor = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColor = "3288365271"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationAfterglow = "3288365271"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationGlassAttribute = "1"	LogonUI.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentPalette = a6d8ff0076b9ed00429ce3000078d700005a9e000042750000264200f7630c00	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History\AutoColor = "0"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationColorBalance = "89"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\ColorizationBlurBalance = "1"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\StartColorMenu = "4288567808"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent\AccentColorMenu = "4292311040"	LogonUI.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\DWM\EnableWindowColorization = "206"	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Accent	LogonUI.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Themes\History	LogonUI.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
656	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
4192	powershell.exe
4192	powershell.exe
436	powershell.exe
436	powershell.exe
1540	powershell.exe
1540	powershell.exe
1112	powershell.exe
1112	powershell.exe

Suspicious behavior: LoadsDriver 64 IoCs

pid	Process
1012	Process not Found
4736	Process not Found
4508	Process not Found
3076	Process not Found
220	Process not Found
4452	Process not Found
3700	Process not Found
3140	Process not Found
1564	Process not Found
3512	Process not Found
1876	Process not Found
1816	Process not Found
1644	Process not Found
4904	Process not Found
3092	Process not Found
3816	Process not Found
3760	Process not Found
3524	Process not Found
3960	Process not Found
4672	Process not Found
232	Process not Found
3872	Process not Found
344	Process not Found
8	Process not Found
1728	Process not Found
2748	Process not Found
1584	Process not Found
4484	Process not Found
1276	Process not Found
4112	Process not Found
1940	Process not Found
3684	Process not Found
2968	Process not Found
5064	Process not Found
760	Process not Found
1864	Process not Found
5088	Process not Found
2324	Process not Found
1388	Process not Found
888	Process not Found
2428	Process not Found
4180	Process not Found
4576	Process not Found
1248	Process not Found
936	Process not Found
2020	Process not Found
3560	Process not Found
3564	Process not Found
436	Process not Found
3900	Process not Found
5104	Process not Found
4440	Process not Found
1652	Process not Found
2160	Process not Found
4148	Process not Found
3836	Process not Found
1756	Process not Found
4936	Process not Found
4724	Process not Found
2572	Process not Found
1972	Process not Found
1732	Process not Found
3440	Process not Found
2488	Process not Found

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	4280	sv.exe
Token: SeDebugPrivilege	4192	powershell.exe
Token: SeDebugPrivilege	436	powershell.exe
Token: SeDebugPrivilege	1540	powershell.exe
Token: SeDebugPrivilege	1112	powershell.exe
Token: SeDebugPrivilege	4280	sv.exe
Token: SeDebugPrivilege	3092	svhost.exe
Token: SeDebugPrivilege	4480	svhost.exe
Token: SeDebugPrivilege	2244	svhost.exe
Token: SeDebugPrivilege	5108	svhost.exe
Token: SeDebugPrivilege	2860	svhost.exe
Token: SeDebugPrivilege	2628	svhost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
5112	LogonUI.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 4280 wrote to memory of 4192	4280	sv.exe	87
PID 4280 wrote to memory of 4192	4280	sv.exe	87
PID 4280 wrote to memory of 436	4280	sv.exe	89
PID 4280 wrote to memory of 436	4280	sv.exe	89
PID 4280 wrote to memory of 1540	4280	sv.exe	91
PID 4280 wrote to memory of 1540	4280	sv.exe	91
PID 4280 wrote to memory of 1112	4280	sv.exe	93
PID 4280 wrote to memory of 1112	4280	sv.exe	93
PID 4280 wrote to memory of 656	4280	sv.exe	95
PID 4280 wrote to memory of 656	4280	sv.exe	95
PID 4280 wrote to memory of 4316	4280	sv.exe	126
PID 4280 wrote to memory of 4316	4280	sv.exe	126

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\sv.exe
"C:\Users\Admin\AppData\Local\Temp\sv.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4280
- 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\sv.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4192
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'sv.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:436
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1540
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svhost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1112
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svhost" /tr "C:\ProgramData\svhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:656
- C:\Windows\SYSTEM32\shutdown.exe
  shutdown.exe -L
  2⤵
  PID:4316

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3092

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4480

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2244

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5108

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2860

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2628

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x4 /state0:0xa3939055 /state1:0x41c64e6d
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of SetWindowsHookEx
PID:5112

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\ProgramData\svhost.exe

Filesize
63KB

MD5
c095a62b525e62244cad230e696028cf

SHA1
67232c186d3efe248b540f1f2fe3382770b5074a

SHA256
a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

SHA512
5ba859d89a9277d9b6243f461991cc6472d001cdea52d9fcfba3cbead88fbc69d9dfce076b1fdeaf0d1cd21fe4cace54f1cefe1c352d70cc8fa2898fe1b61fb0

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\CLR_v4.0\UsageLogs\svhost.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
944B

MD5
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
fa8d1461e4feb2c39654e3a555a027f8

SHA1
0ca46b8961ceba8f9da31de5ed2408643fc89141

SHA256
7e26e4f0ef3a7d2904818a691429789c4781029ff4aab697c3b7c9a4287d661f

SHA512
e486b8f029c7eec60b6b2b5603390330afb1ddf627cc01c511808c47e68676b4c429b9f75fd4e16e48b496dccfe8cc8ec4a35825e1e889e66571acb6c03e0869

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

Filesize
944B

MD5
96e3b86880fedd5afc001d108732a3e5

SHA1
8fc17b39d744a9590a6d5897012da5e6757439a3

SHA256
c3077e4cadb4ed246c02abe55aa6cf832fee4c2546b7addb7d22cd1c7c8c1294

SHA512
909b1968f7204fa7029109b02232d8cc5438f6b4dc7c9044e4e47c59fcee538199b13029e36592b12ed573d48a308dd4822d2ced4129ab08d4111897e02be55d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_mgqe5p3i.ort.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/4192-12-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4192-17-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4192-14-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4192-13-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4192-2-0x0000023C6A720000-0x0000023C6A742000-memory.dmp

Filesize
136KB

Download
memory/4280-0-0x00007FFC3D363000-0x00007FFC3D365000-memory.dmp

Filesize
8KB

Download
memory/4280-56-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4280-57-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download
memory/4280-1-0x00000000008E0000-0x00000000008F6000-memory.dmp

Filesize
88KB

Download
memory/4280-68-0x00007FFC3D360000-0x00007FFC3DE21000-memory.dmp

Filesize
10.8MB

Download