xworm | 0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0

Analysis

max time kernel
117s
max time network
119s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 16:19

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General

Target

0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
Size

78KB
MD5

959ac550de9dc34474a8d8b16a050cfd
SHA1

d6ad271189c5ea66b6ac3268b18c05fa26b5f0f0
SHA256

0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0
SHA512

2c2d837164824fc1503a022a43793e5586c08d6b6b633e7fe828289489fad4c90a7c0a9fb3f2b6de093e901e9b957670063107b06b1e1ea474335806955ab735
SSDEEP

1536:HBx2Kk3000uEZf4Tl+XbctEjt8Y50vuzsB1nKzvpmvqmUte4xRZ4T:H+LE00bZ2leMEZlmBIvh/XZ4

Score

10^/10

xworm defense_evasion discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

againzamel.zapto.org:1188

damoni.zapto.org:1188

Attributes

Install_directory
%AppData%
install_file
Update.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/files/0x0007000000012118-2.dat	family_xworm
behavioral1/memory/2944-7-0x0000000000F90000-0x0000000000FA8000-memory.dmp	family_xworm
behavioral1/memory/2168-43-0x0000000001230000-0x0000000001248000-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 4 IoCs

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

execution

PowerShell

T1059.001

pid	Process
2308	powershell.exe
2608	powershell.exe
2192	powershell.exe
2816	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2944	Update.exe
2168	Update.exe
1780	Update.exe

Loads dropped DLL 1 IoCs

pid	Process
1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.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-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\Update = "C:\\Users\\Admin\\AppData\\Roaming\\Update.exe"	Update.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
4	ip-api.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.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
1200	schtasks.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2356	powershell.exe
2308	powershell.exe
2608	powershell.exe
2192	powershell.exe
2816	powershell.exe
2944	Update.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2944	Update.exe
Token: SeDebugPrivilege	2356	powershell.exe
Token: SeDebugPrivilege	2308	powershell.exe
Token: SeDebugPrivilege	2608	powershell.exe
Token: SeDebugPrivilege	2192	powershell.exe
Token: SeDebugPrivilege	2816	powershell.exe
Token: SeDebugPrivilege	2944	Update.exe
Token: SeDebugPrivilege	2168	Update.exe
Token: SeDebugPrivilege	1780	Update.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2944	Update.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 1800 wrote to memory of 2356	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	30
PID 1800 wrote to memory of 2356	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	30
PID 1800 wrote to memory of 2356	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	30
PID 1800 wrote to memory of 2356	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	30
PID 1800 wrote to memory of 2944	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	32
PID 1800 wrote to memory of 2944	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	32
PID 1800 wrote to memory of 2944	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	32
PID 1800 wrote to memory of 2944	1800	0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe	32
PID 2944 wrote to memory of 2308	2944	Update.exe	34
PID 2944 wrote to memory of 2308	2944	Update.exe	34
PID 2944 wrote to memory of 2308	2944	Update.exe	34
PID 2944 wrote to memory of 2608	2944	Update.exe	36
PID 2944 wrote to memory of 2608	2944	Update.exe	36
PID 2944 wrote to memory of 2608	2944	Update.exe	36
PID 2944 wrote to memory of 2192	2944	Update.exe	38
PID 2944 wrote to memory of 2192	2944	Update.exe	38
PID 2944 wrote to memory of 2192	2944	Update.exe	38
PID 2944 wrote to memory of 2816	2944	Update.exe	40
PID 2944 wrote to memory of 2816	2944	Update.exe	40
PID 2944 wrote to memory of 2816	2944	Update.exe	40
PID 2944 wrote to memory of 1200	2944	Update.exe	43
PID 2944 wrote to memory of 1200	2944	Update.exe	43
PID 2944 wrote to memory of 1200	2944	Update.exe	43
PID 2028 wrote to memory of 2168	2028	taskeng.exe	46
PID 2028 wrote to memory of 2168	2028	taskeng.exe	46
PID 2028 wrote to memory of 2168	2028	taskeng.exe	46
PID 2028 wrote to memory of 1780	2028	taskeng.exe	47
PID 2028 wrote to memory of 1780	2028	taskeng.exe	47
PID 2028 wrote to memory of 1780	2028	taskeng.exe	47

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\0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe
"C:\Users\Admin\AppData\Local\Temp\0240fc167d3e9cabeb5a9e707ce52d7842e332e084bef5e22b72fc3ecd3488c0.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1800
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHgAcQBqACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAHcAagB3ACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAG0AagBlACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGMAaQBqACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2356
- C:\Users\Admin\AppData\Local\Temp\Update.exe
  "C:\Users\Admin\AppData\Local\Temp\Update.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2944
- - 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\Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2308
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2608
- - 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\Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2192
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Update.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2816
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Update" /tr "C:\Users\Admin\AppData\Roaming\Update.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:1200

C:\Windows\system32\taskeng.exe
taskeng.exe {F433EFE4-1D75-4A15-A273-458D0BFECA83} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2168
- C:\Users\Admin\AppData\Roaming\Update.exe
  C:\Users\Admin\AppData\Roaming\Update.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1780

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

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\37ZG2UOXMC6R9F9ZLKA5.temp

Filesize
7KB

MD5
71ad80645ade2396c2f97d407a695743

SHA1
8fff12ec00fc456cf0a831a6e158151ee0f921c0

SHA256
ae021d603e383a4bf98ede456b82780dfb0c2026ace863006adfba3b563a40ba

SHA512
65dc45b7c6e441eaf27696f87c9646a90035cf37748fb7696039de4e82fe973d74763b215fcfc95844ed03c2a78d21d6fd2eb171c2b19a6368a762bfb7bb1d05

Download Submit
\Users\Admin\AppData\Local\Temp\Update.exe

Filesize
73KB

MD5
d7cec6a9ad4510455738ee60758739d7

SHA1
9f935bff03c71d297d2ce3ca9c0ad1675bcf354d

SHA256
f6f746d7b5a8bd106b2b3fddb8839c51f45bf34b58f37ed6ba3b3e4ddc215fb4

SHA512
369b97be0d0793fc53936961e16c71cf016c801bf201dd3420bc87f1b4a9b9383359b22ce075e2d9452cbbcf329887ab62a05dab4854f9afcf61b22b0c4e9ae8

Download Submit
memory/2168-43-0x0000000001230000-0x0000000001248000-memory.dmp

Filesize
96KB

Download
memory/2308-15-0x000000001B5E0000-0x000000001B8C2000-memory.dmp

Filesize
2.9MB

Download
memory/2308-16-0x0000000002390000-0x0000000002398000-memory.dmp

Filesize
32KB

Download
memory/2608-22-0x000000001B450000-0x000000001B732000-memory.dmp

Filesize
2.9MB

Download
memory/2608-23-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2944-6-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download
memory/2944-7-0x0000000000F90000-0x0000000000FA8000-memory.dmp

Filesize
96KB

Download
memory/2944-35-0x000007FEF4FD3000-0x000007FEF4FD4000-memory.dmp

Filesize
4KB

Download