xworm | f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274

Analysis

max time kernel
108s
max time network
106s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
10-11-2024 15:15

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General

Target

f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe
Size

29KB
MD5

f6573eddecb4954376e9f8ad71224e30
SHA1

fad9e65dd5dda45c13d41e9b65a123e2486a05c6
SHA256

f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274
SHA512

3a61062d7de93d8bcace7b297ed3f2d281ba5207876107565604405170628dff501a576c59f121ff7d4ec062d89b4cd6423d71c205bfa89e7282775f4caee34a
SSDEEP

768:bpAFB16GS5pMh0aVXiSQACn5UhlVFLJAXh92Jv/h/A:NAFhxh0aV4nsFJc9C+

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

127.0.0.1:51061

23.ip.gl.ply.gg:51061

Mutex

xOb48s6ij6ye94KQ

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x00120000000054a9-12.dat	family_xworm
behavioral1/memory/2740-22-0x00000000003A0000-0x00000000003B0000-memory.dmp	family_xworm
behavioral1/memory/2024-54-0x0000000000B10000-0x0000000000B20000-memory.dmp	family_xworm
behavioral1/memory/1900-57-0x0000000000F30000-0x0000000000F40000-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 5 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1696	powershell.exe
2900	powershell.exe
1652	powershell.exe
940	powershell.exe
2224	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2740	Nixware.exe
2024	svchost.exe
1900	svchost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\Nixware = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Nixware.exe"	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2872745919-2748461613-2989606286-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Nixware.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 9 IoCs

evasion

pid	Process
1804	timeout.exe
1712	timeout.exe
2792	timeout.exe
2876	timeout.exe
2072	timeout.exe
2952	timeout.exe
2688	timeout.exe
2452	timeout.exe
300	timeout.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
2184	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1652	powershell.exe
940	powershell.exe
2224	powershell.exe
1696	powershell.exe
2900	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1652	powershell.exe
Token: SeDebugPrivilege	2740	Nixware.exe
Token: SeDebugPrivilege	940	powershell.exe
Token: SeDebugPrivilege	2224	powershell.exe
Token: SeDebugPrivilege	1696	powershell.exe
Token: SeDebugPrivilege	2900	powershell.exe
Token: SeDebugPrivilege	2024	svchost.exe
Token: SeDebugPrivilege	1900	svchost.exe

Suspicious use of WriteProcessMemory 57 IoCs

description	pid	Process	procid_target
PID 1352 wrote to memory of 1652	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	30
PID 1352 wrote to memory of 1652	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	30
PID 1352 wrote to memory of 1652	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	30
PID 1352 wrote to memory of 2740	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	32
PID 1352 wrote to memory of 2740	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	32
PID 1352 wrote to memory of 2740	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	32
PID 1352 wrote to memory of 3028	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	33
PID 1352 wrote to memory of 3028	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	33
PID 1352 wrote to memory of 3028	1352	f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe	33
PID 3028 wrote to memory of 2792	3028	cmd.exe	35
PID 3028 wrote to memory of 2792	3028	cmd.exe	35
PID 3028 wrote to memory of 2792	3028	cmd.exe	35
PID 3028 wrote to memory of 2876	3028	cmd.exe	36
PID 3028 wrote to memory of 2876	3028	cmd.exe	36
PID 3028 wrote to memory of 2876	3028	cmd.exe	36
PID 3028 wrote to memory of 2072	3028	cmd.exe	37
PID 3028 wrote to memory of 2072	3028	cmd.exe	37
PID 3028 wrote to memory of 2072	3028	cmd.exe	37
PID 3028 wrote to memory of 2952	3028	cmd.exe	38
PID 3028 wrote to memory of 2952	3028	cmd.exe	38
PID 3028 wrote to memory of 2952	3028	cmd.exe	38
PID 2740 wrote to memory of 940	2740	Nixware.exe	39
PID 2740 wrote to memory of 940	2740	Nixware.exe	39
PID 2740 wrote to memory of 940	2740	Nixware.exe	39
PID 2740 wrote to memory of 2224	2740	Nixware.exe	41
PID 2740 wrote to memory of 2224	2740	Nixware.exe	41
PID 2740 wrote to memory of 2224	2740	Nixware.exe	41
PID 3028 wrote to memory of 300	3028	cmd.exe	43
PID 3028 wrote to memory of 300	3028	cmd.exe	43
PID 3028 wrote to memory of 300	3028	cmd.exe	43
PID 2740 wrote to memory of 1696	2740	Nixware.exe	44
PID 2740 wrote to memory of 1696	2740	Nixware.exe	44
PID 2740 wrote to memory of 1696	2740	Nixware.exe	44
PID 2740 wrote to memory of 2900	2740	Nixware.exe	46
PID 2740 wrote to memory of 2900	2740	Nixware.exe	46
PID 2740 wrote to memory of 2900	2740	Nixware.exe	46
PID 3028 wrote to memory of 2688	3028	cmd.exe	48
PID 3028 wrote to memory of 2688	3028	cmd.exe	48
PID 3028 wrote to memory of 2688	3028	cmd.exe	48
PID 3028 wrote to memory of 2452	3028	cmd.exe	49
PID 3028 wrote to memory of 2452	3028	cmd.exe	49
PID 3028 wrote to memory of 2452	3028	cmd.exe	49
PID 2740 wrote to memory of 2184	2740	Nixware.exe	50
PID 2740 wrote to memory of 2184	2740	Nixware.exe	50
PID 2740 wrote to memory of 2184	2740	Nixware.exe	50
PID 3028 wrote to memory of 1804	3028	cmd.exe	52
PID 3028 wrote to memory of 1804	3028	cmd.exe	52
PID 3028 wrote to memory of 1804	3028	cmd.exe	52
PID 3028 wrote to memory of 1712	3028	cmd.exe	53
PID 3028 wrote to memory of 1712	3028	cmd.exe	53
PID 3028 wrote to memory of 1712	3028	cmd.exe	53
PID 324 wrote to memory of 2024	324	taskeng.exe	56
PID 324 wrote to memory of 2024	324	taskeng.exe	56
PID 324 wrote to memory of 2024	324	taskeng.exe	56
PID 324 wrote to memory of 1900	324	taskeng.exe	57
PID 324 wrote to memory of 1900	324	taskeng.exe	57
PID 324 wrote to memory of 1900	324	taskeng.exe	57

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\f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe
"C:\Users\Admin\AppData\Local\Temp\f3590b9a4f1293d0f7f662de60607695bdb6e95aafdb459e2de1c7096b7a1274N.exe"
1⤵
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1352
- 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\Nixware.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1652
- C:\Users\Admin\AppData\Local\Temp\Nixware.exe
  "C:\Users\Admin\AppData\Local\Temp\Nixware.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2740
- - 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\Nixware.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:940
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Nixware.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2224
- - 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\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1696
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2900
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2184
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\fqwf.bat" "
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3028
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2792
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2876
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2072
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2952
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:300
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2688
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:2452
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:1804
- - C:\Windows\system32\timeout.exe
    timeout /t 1 /nobreak
    3⤵
    - Delays execution with timeout.exe
    PID:1712

C:\Windows\system32\taskeng.exe
taskeng.exe {952A9AC9-E793-4710-837C-96AC1AB3C3F5} S-1-5-21-2872745919-2748461613-2989606286-1000:CCJBVTGQ\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:324
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2024
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1900

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\Nixware.exe

Filesize
35KB

MD5
7927a45df166a1d50c6a3d2e0a76fd9e

SHA1
001f0fb1a6eee3086ff7fa02b22789c0b75ae62d

SHA256
1947f056c89dd21170950463b4abdcd644bbaf1a519bfb7be502f09178853135

SHA512
7b0d934be2fd3a6d2b1938b79a1763637c226cba22a3d42e3addb3d5f9346380d4636a6c5fee6d301b9e19dac2d7c239ba5d8e594a7a15c23d6b0aae679f3815

Download Submit
C:\Users\Admin\AppData\Local\Temp\fqwf.bat

Filesize
200B

MD5
acda9a75141b683a359bf739e74111c3

SHA1
a618d2350a5357f8b19d642320d26dbe0a891174

SHA256
7ef23e716b218877f06bc2e99869f93ee8406766ee50c0de9e83e549f2334971

SHA512
33637b529ec9360fc5183f0fc1e11528c8496a5fbce64b6563c416b5193b62641835a1ded1f2b7412b5e6ae1289de0236b42db1bd1e8e81309fb5e8b35c2fd8d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
eac589e1d814fa302c8b50bd94833578

SHA1
89ba7a7e2b9b6da5197cb9c037c1c1478120e032

SHA256
093c3977670aa8e2e2a2dba23d5367474fd27dbd564b02dc879c2d7aba889c64

SHA512
c4a3776d279cab90032edc411ec662d2c210d633da56112b4c3df1b4ca84def416bfb3893ddc38c28e49a5abc81753b5c2a433b26fbed1971db4fafec2475a44

Download Submit
memory/940-29-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/940-30-0x0000000002350000-0x0000000002358000-memory.dmp

Filesize
32KB

Download
memory/1352-0-0x000007FEF6263000-0x000007FEF6264000-memory.dmp

Filesize
4KB

Download
memory/1352-1-0x0000000001010000-0x000000000101E000-memory.dmp

Filesize
56KB

Download
memory/1652-8-0x0000000002240000-0x0000000002248000-memory.dmp

Filesize
32KB

Download
memory/1652-7-0x000000001B670000-0x000000001B952000-memory.dmp

Filesize
2.9MB

Download
memory/1652-6-0x0000000002E40000-0x0000000002EC0000-memory.dmp

Filesize
512KB

Download
memory/1900-57-0x0000000000F30000-0x0000000000F40000-memory.dmp

Filesize
64KB

Download
memory/2024-54-0x0000000000B10000-0x0000000000B20000-memory.dmp

Filesize
64KB

Download
memory/2740-22-0x00000000003A0000-0x00000000003B0000-memory.dmp

Filesize
64KB

Download