xworm | a5728f8fd33c77818782d3eef567b77d1586b1927696affced63d494691edbe6

Analysis

max time kernel
1798s
max time network
1799s
platform
windows7_x64
resource
win7-20240611-en
resource tags

arch:x64arch:x86image:win7-20240611-enlocale:en-usos:windows7-x64system
submitted
01/07/2024, 09:15

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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 9 IoCs

resource	yara_rule
behavioral2/memory/1636-1-0x0000000000300000-0x0000000000316000-memory.dmp	family_xworm
behavioral2/files/0x000b0000000122d6-34.dat	family_xworm
behavioral2/memory/1732-36-0x00000000013B0000-0x00000000013C6000-memory.dmp	family_xworm
behavioral2/memory/1832-54-0x00000000003B0000-0x00000000003C6000-memory.dmp	family_xworm
behavioral2/memory/1592-56-0x0000000001350000-0x0000000001366000-memory.dmp	family_xworm
behavioral2/memory/1664-62-0x0000000000050000-0x0000000000066000-memory.dmp	family_xworm
behavioral2/memory/1092-64-0x00000000008F0000-0x0000000000906000-memory.dmp	family_xworm
behavioral2/memory/2384-66-0x0000000000C20000-0x0000000000C36000-memory.dmp	family_xworm
behavioral2/memory/2764-68-0x0000000001370000-0x0000000001386000-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

pid	Process
2712	powershell.exe
1492	powershell.exe
1604	powershell.exe
2572	powershell.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
1732	svhost.exe
2376	svhost.exe
1348	svhost.exe
1432	svhost.exe
1712	svhost.exe
2732	svhost.exe
2084	svhost.exe
2268	svhost.exe
1612	svhost.exe
2488	svhost.exe
792	svhost.exe
2060	svhost.exe
992	svhost.exe
2964	svhost.exe
2640	svhost.exe
1832	svhost.exe
1592	svhost.exe
2140	svhost.exe
1672	svhost.exe
1520	svhost.exe
1908	svhost.exe
1664	svhost.exe
1092	svhost.exe
2384	svhost.exe
2764	svhost.exe
2296	svhost.exe
2124	svhost.exe
1732	svhost.exe
2476	svhost.exe
1584	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-1-5-21-1340930862-1405011213-2821322012-1000\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
2528	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1492	powershell.exe
1604	powershell.exe
2572	powershell.exe
2712	powershell.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1636	sv.exe

Suspicious use of AdjustPrivilegeToken 36 IoCs

description	pid	Process
Token: SeDebugPrivilege	1636	sv.exe
Token: SeDebugPrivilege	1492	powershell.exe
Token: SeDebugPrivilege	1604	powershell.exe
Token: SeDebugPrivilege	2572	powershell.exe
Token: SeDebugPrivilege	2712	powershell.exe
Token: SeDebugPrivilege	1636	sv.exe
Token: SeDebugPrivilege	1732	svhost.exe
Token: SeDebugPrivilege	2376	svhost.exe
Token: SeDebugPrivilege	1348	svhost.exe
Token: SeDebugPrivilege	1432	svhost.exe
Token: SeDebugPrivilege	1712	svhost.exe
Token: SeDebugPrivilege	2732	svhost.exe
Token: SeDebugPrivilege	2084	svhost.exe
Token: SeDebugPrivilege	2268	svhost.exe
Token: SeDebugPrivilege	1612	svhost.exe
Token: SeDebugPrivilege	2488	svhost.exe
Token: SeDebugPrivilege	792	svhost.exe
Token: SeDebugPrivilege	2060	svhost.exe
Token: SeDebugPrivilege	992	svhost.exe
Token: SeDebugPrivilege	2964	svhost.exe
Token: SeDebugPrivilege	2640	svhost.exe
Token: SeDebugPrivilege	1832	svhost.exe
Token: SeDebugPrivilege	1592	svhost.exe
Token: SeDebugPrivilege	2140	svhost.exe
Token: SeDebugPrivilege	1672	svhost.exe
Token: SeDebugPrivilege	1520	svhost.exe
Token: SeDebugPrivilege	1908	svhost.exe
Token: SeDebugPrivilege	1664	svhost.exe
Token: SeDebugPrivilege	1092	svhost.exe
Token: SeDebugPrivilege	2384	svhost.exe
Token: SeDebugPrivilege	2764	svhost.exe
Token: SeDebugPrivilege	2296	svhost.exe
Token: SeDebugPrivilege	2124	svhost.exe
Token: SeDebugPrivilege	1732	svhost.exe
Token: SeDebugPrivilege	2476	svhost.exe
Token: SeDebugPrivilege	1584	svhost.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 1636 wrote to memory of 1492	1636	sv.exe	28
PID 1636 wrote to memory of 1492	1636	sv.exe	28
PID 1636 wrote to memory of 1492	1636	sv.exe	28
PID 1636 wrote to memory of 1604	1636	sv.exe	30
PID 1636 wrote to memory of 1604	1636	sv.exe	30
PID 1636 wrote to memory of 1604	1636	sv.exe	30
PID 1636 wrote to memory of 2572	1636	sv.exe	32
PID 1636 wrote to memory of 2572	1636	sv.exe	32
PID 1636 wrote to memory of 2572	1636	sv.exe	32
PID 1636 wrote to memory of 2712	1636	sv.exe	34
PID 1636 wrote to memory of 2712	1636	sv.exe	34
PID 1636 wrote to memory of 2712	1636	sv.exe	34
PID 1636 wrote to memory of 2528	1636	sv.exe	36
PID 1636 wrote to memory of 2528	1636	sv.exe	36
PID 1636 wrote to memory of 2528	1636	sv.exe	36
PID 1972 wrote to memory of 1732	1972	taskeng.exe	40
PID 1972 wrote to memory of 1732	1972	taskeng.exe	40
PID 1972 wrote to memory of 1732	1972	taskeng.exe	40
PID 1972 wrote to memory of 2376	1972	taskeng.exe	43
PID 1972 wrote to memory of 2376	1972	taskeng.exe	43
PID 1972 wrote to memory of 2376	1972	taskeng.exe	43
PID 1972 wrote to memory of 1348	1972	taskeng.exe	44
PID 1972 wrote to memory of 1348	1972	taskeng.exe	44
PID 1972 wrote to memory of 1348	1972	taskeng.exe	44
PID 1972 wrote to memory of 1432	1972	taskeng.exe	45
PID 1972 wrote to memory of 1432	1972	taskeng.exe	45
PID 1972 wrote to memory of 1432	1972	taskeng.exe	45
PID 1972 wrote to memory of 1712	1972	taskeng.exe	46
PID 1972 wrote to memory of 1712	1972	taskeng.exe	46
PID 1972 wrote to memory of 1712	1972	taskeng.exe	46
PID 1972 wrote to memory of 2732	1972	taskeng.exe	47
PID 1972 wrote to memory of 2732	1972	taskeng.exe	47
PID 1972 wrote to memory of 2732	1972	taskeng.exe	47
PID 1972 wrote to memory of 2084	1972	taskeng.exe	48
PID 1972 wrote to memory of 2084	1972	taskeng.exe	48
PID 1972 wrote to memory of 2084	1972	taskeng.exe	48
PID 1972 wrote to memory of 2268	1972	taskeng.exe	49
PID 1972 wrote to memory of 2268	1972	taskeng.exe	49
PID 1972 wrote to memory of 2268	1972	taskeng.exe	49
PID 1972 wrote to memory of 1612	1972	taskeng.exe	50
PID 1972 wrote to memory of 1612	1972	taskeng.exe	50
PID 1972 wrote to memory of 1612	1972	taskeng.exe	50
PID 1972 wrote to memory of 2488	1972	taskeng.exe	51
PID 1972 wrote to memory of 2488	1972	taskeng.exe	51
PID 1972 wrote to memory of 2488	1972	taskeng.exe	51
PID 1972 wrote to memory of 792	1972	taskeng.exe	52
PID 1972 wrote to memory of 792	1972	taskeng.exe	52
PID 1972 wrote to memory of 792	1972	taskeng.exe	52
PID 1972 wrote to memory of 2060	1972	taskeng.exe	53
PID 1972 wrote to memory of 2060	1972	taskeng.exe	53
PID 1972 wrote to memory of 2060	1972	taskeng.exe	53
PID 1972 wrote to memory of 992	1972	taskeng.exe	54
PID 1972 wrote to memory of 992	1972	taskeng.exe	54
PID 1972 wrote to memory of 992	1972	taskeng.exe	54
PID 1972 wrote to memory of 2964	1972	taskeng.exe	55
PID 1972 wrote to memory of 2964	1972	taskeng.exe	55
PID 1972 wrote to memory of 2964	1972	taskeng.exe	55
PID 1972 wrote to memory of 2640	1972	taskeng.exe	56
PID 1972 wrote to memory of 2640	1972	taskeng.exe	56
PID 1972 wrote to memory of 2640	1972	taskeng.exe	56
PID 1972 wrote to memory of 1832	1972	taskeng.exe	57
PID 1972 wrote to memory of 1832	1972	taskeng.exe	57
PID 1972 wrote to memory of 1832	1972	taskeng.exe	57
PID 1972 wrote to memory of 1592	1972	taskeng.exe	58

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⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1636
- 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:1492
- 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:1604
- 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:2572
- 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:2712
- 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:2528

C:\Windows\system32\taskeng.exe
taskeng.exe {21622DD2-5A7A-4525-81D9-D5D3D86FC3ED} S-1-5-21-1340930862-1405011213-2821322012-1000:TICCAUTD\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1972
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1732
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2376
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1348
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1432
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1712
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2732
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2084
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2268
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1612
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2488
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:792
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2060
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:992
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2640
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1832
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1592
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2140
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1672
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1520
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1908
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1664
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1092
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2384
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2764
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2296
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2124
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1732
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2476
- C:\ProgramData\svhost.exe
  C:\ProgramData\svhost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1584

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
c8c904d98173aef3c8de253e48338470

SHA1
65a3624ab27debdde0ed3ae227edf593a09340db

SHA256
aa40938570b84b52583346804ce869d3836933072c977371f412c64fec1770ca

SHA512
cccae1cccf75133fefb95f5632dcb86e720af10501f8d2c4d1b9bbf2752b8399997d4d50d0003f74b758067cb172d6735e8a1698d44fbd9f17e8494ec32a91fa

Download Submit
memory/1092-64-0x00000000008F0000-0x0000000000906000-memory.dmp

Filesize
88KB

Download
memory/1492-6-0x0000000002CE0000-0x0000000002D60000-memory.dmp

Filesize
512KB

Download
memory/1492-7-0x000000001B720000-0x000000001BA02000-memory.dmp

Filesize
2.9MB

Download
memory/1492-8-0x0000000001D80000-0x0000000001D88000-memory.dmp

Filesize
32KB

Download
memory/1592-56-0x0000000001350000-0x0000000001366000-memory.dmp

Filesize
88KB

Download
memory/1604-14-0x000000001B7C0000-0x000000001BAA2000-memory.dmp

Filesize
2.9MB

Download
memory/1604-15-0x00000000027E0000-0x00000000027E8000-memory.dmp

Filesize
32KB

Download
memory/1636-51-0x0000000000890000-0x000000000089C000-memory.dmp

Filesize
48KB

Download
memory/1636-32-0x000000001AD00000-0x000000001AD80000-memory.dmp

Filesize
512KB

Download
memory/1636-31-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/1636-30-0x000000001AD00000-0x000000001AD80000-memory.dmp

Filesize
512KB

Download
memory/1636-0-0x000007FEF5803000-0x000007FEF5804000-memory.dmp

Filesize
4KB

Download
memory/1636-1-0x0000000000300000-0x0000000000316000-memory.dmp

Filesize
88KB

Download
memory/1664-62-0x0000000000050000-0x0000000000066000-memory.dmp

Filesize
88KB

Download
memory/1732-36-0x00000000013B0000-0x00000000013C6000-memory.dmp

Filesize
88KB

Download
memory/1832-54-0x00000000003B0000-0x00000000003C6000-memory.dmp

Filesize
88KB

Download
memory/2384-66-0x0000000000C20000-0x0000000000C36000-memory.dmp

Filesize
88KB

Download
memory/2764-68-0x0000000001370000-0x0000000001386000-memory.dmp

Filesize
88KB

Download