xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

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

C2

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

Attributes

Install_directory
%ProgramData%
install_file
svhost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2816-1-0x0000000000780000-0x0000000000796000-memory.dmp	family_xworm
behavioral1/files/0x000d000000023289-59.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
1660	powershell.exe
916	powershell.exe
4168	powershell.exe
3680	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-1-5-21-1337824034-2731376981-3755436523-1000\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 30 IoCs

pid	Process
4552	svhost.exe
4988	svhost.exe
3708	svhost.exe
3884	svhost.exe
4624	svhost.exe
1536	svhost.exe
4812	svhost.exe
4304	svhost.exe
3304	svhost.exe
2336	svhost.exe
2688	svhost.exe
216	svhost.exe
4368	svhost.exe
1240	svhost.exe
3248	svhost.exe
5084	svhost.exe
2884	svhost.exe
3800	svhost.exe
1412	svhost.exe
1868	svhost.exe
2180	svhost.exe
1088	svhost.exe
2940	svhost.exe
3720	svhost.exe
1536	svhost.exe
4248	svhost.exe
4384	svhost.exe
652	svhost.exe
3996	svhost.exe
1640	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-1-5-21-1337824034-2731376981-3755436523-1000\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

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
844	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
1660	powershell.exe
1660	powershell.exe
916	powershell.exe
916	powershell.exe
4168	powershell.exe
4168	powershell.exe
3680	powershell.exe
3680	powershell.exe

Suspicious use of AdjustPrivilegeToken 35 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	sv.exe
Token: SeDebugPrivilege	1660	powershell.exe
Token: SeDebugPrivilege	916	powershell.exe
Token: SeDebugPrivilege	4168	powershell.exe
Token: SeDebugPrivilege	3680	powershell.exe
Token: SeDebugPrivilege	2816	sv.exe
Token: SeDebugPrivilege	4552	svhost.exe
Token: SeDebugPrivilege	4988	svhost.exe
Token: SeDebugPrivilege	3708	svhost.exe
Token: SeDebugPrivilege	3884	svhost.exe
Token: SeDebugPrivilege	4624	svhost.exe
Token: SeDebugPrivilege	1536	svhost.exe
Token: SeDebugPrivilege	4812	svhost.exe
Token: SeDebugPrivilege	4304	svhost.exe
Token: SeDebugPrivilege	3304	svhost.exe
Token: SeDebugPrivilege	2336	svhost.exe
Token: SeDebugPrivilege	2688	svhost.exe
Token: SeDebugPrivilege	216	svhost.exe
Token: SeDebugPrivilege	4368	svhost.exe
Token: SeDebugPrivilege	1240	svhost.exe
Token: SeDebugPrivilege	5084	svhost.exe
Token: SeDebugPrivilege	2884	svhost.exe
Token: SeDebugPrivilege	3800	svhost.exe
Token: SeDebugPrivilege	1412	svhost.exe
Token: SeDebugPrivilege	1868	svhost.exe
Token: SeDebugPrivilege	2180	svhost.exe
Token: SeDebugPrivilege	1088	svhost.exe
Token: SeDebugPrivilege	2940	svhost.exe
Token: SeDebugPrivilege	3720	svhost.exe
Token: SeDebugPrivilege	1536	svhost.exe
Token: SeDebugPrivilege	4248	svhost.exe
Token: SeDebugPrivilege	4384	svhost.exe
Token: SeDebugPrivilege	652	svhost.exe
Token: SeDebugPrivilege	3996	svhost.exe
Token: SeDebugPrivilege	1640	svhost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 1660	2816	sv.exe	80
PID 2816 wrote to memory of 1660	2816	sv.exe	80
PID 2816 wrote to memory of 916	2816	sv.exe	82
PID 2816 wrote to memory of 916	2816	sv.exe	82
PID 2816 wrote to memory of 4168	2816	sv.exe	84
PID 2816 wrote to memory of 4168	2816	sv.exe	84
PID 2816 wrote to memory of 3680	2816	sv.exe	86
PID 2816 wrote to memory of 3680	2816	sv.exe	86
PID 2816 wrote to memory of 844	2816	sv.exe	88
PID 2816 wrote to memory of 844	2816	sv.exe	88

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:2816
- 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:1660
- 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:916
- 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:4168
- 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:3680
- 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:844

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4552

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4988

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3708

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3884

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4624

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1536

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4812

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4304

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3304

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2336

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2688

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:216

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4368

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1240

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
PID:3248

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5084

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2884

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3800

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1412

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1868

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2180

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1088

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2940

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3720

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1536

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4248

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4384

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:652

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3996

C:\ProgramData\svhost.exe
C:\ProgramData\svhost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1640

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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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
04f1d68afbed6b13399edfae1e9b1472

SHA1
8bfdcb687a995e4a63a8c32df2c66dc89f91a8b0

SHA256
f358f33a42122e97c489fad7bbc8beab2eb42d42e4ec7fce0dd61fe6d8c0b8de

SHA512
30c5e72a8134992094d937d2588f7a503b1d6407d11afe0265b7c8b0ce14071925e5caed13fc4f9c28705df4c7aed3601f81b007048b148af274d7784aa5fb75

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_nmjhs22p.vty.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1660-14-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/1660-17-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/1660-13-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/1660-12-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/1660-2-0x000001E640B80000-0x000001E640BA2000-memory.dmp

Filesize
136KB

Download
memory/2816-0-0x00007FF9D55F3000-0x00007FF9D55F5000-memory.dmp

Filesize
8KB

Download
memory/2816-57-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/2816-58-0x00007FF9D55F0000-0x00007FF9D60B1000-memory.dmp

Filesize
10.8MB

Download
memory/2816-1-0x0000000000780000-0x0000000000796000-memory.dmp

Filesize
88KB

Download
memory/4168-41-0x00000224C7FF0000-0x00000224C820C000-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