xworm | 4441cb86070e91e5c3c1d58c7043cef87f8c07015327ac49a9512b3f61a33a31

Analysis

max time kernel
150s
max time network
148s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
20-12-2024 18:26

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General

Target

x2woof.exe
Size

314KB
MD5

a5ba086a31a86f52e15f428b7b86366b
SHA1

5e7e4c2f1580b464be77ab7c03b0fefad70b901e
SHA256

4441cb86070e91e5c3c1d58c7043cef87f8c07015327ac49a9512b3f61a33a31
SHA512

aca4e8e9a09e2062330dd5f021c4175fd1cb44c8b2b42386e5f0dead8c74b872e75aa80f709deb96215216848afac87d68fd6ce86a02cfd7a5808c148b65fe2c
SSDEEP

6144:Hf4QpI7++bazupxp2a3fTnrrBrkRqPaCY+zoUf/f92Oq7ElR:HfuSBzupxplzrFPcq3xqkR

Score

10^/10

xworm bootkit discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

hope-asia.gl.at.ply.gg:35710

Attributes

Install_directory
%ProgramData%
install_file
x2woof.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/5112-1-0x0000000000610000-0x0000000000664000-memory.dmp	family_xworm
behavioral2/files/0x000d000000023b7c-58.dat	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
748	powershell.exe
1284	powershell.exe
788	powershell.exe
2200	powershell.exe

Checks computer location settings 2 TTPs 3 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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	x2woof.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	akxhbl.exe
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	akxhbl.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x2woof.lnk	x2woof.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\x2woof.lnk	x2woof.exe

Executes dropped EXE 9 IoCs

pid	Process
4804	x2woof.exe
2252	x2woof.exe
3956	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
1328	akxhbl.exe
3020	akxhbl.exe
4412	akxhbl.exe
4900	akxhbl.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-1-5-21-493223053-2004649691-1575712786-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\x2woof = "C:\\ProgramData\\x2woof.exe"	x2woof.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
15	ip-api.com

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	akxhbl.exe

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 3 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	akxhbl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	akxhbl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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
4892	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
748	powershell.exe
748	powershell.exe
1284	powershell.exe
1284	powershell.exe
788	powershell.exe
788	powershell.exe
2200	powershell.exe
2200	powershell.exe
5112	x2woof.exe
3680	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3768	akxhbl.exe
1328	akxhbl.exe
1328	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
1328	akxhbl.exe
3020	akxhbl.exe
1328	akxhbl.exe
3020	akxhbl.exe
3020	akxhbl.exe
3020	akxhbl.exe
1328	akxhbl.exe
1328	akxhbl.exe
4412	akxhbl.exe
4412	akxhbl.exe
4412	akxhbl.exe
1328	akxhbl.exe
4412	akxhbl.exe
1328	akxhbl.exe
3020	akxhbl.exe
3020	akxhbl.exe
3680	akxhbl.exe
3680	akxhbl.exe
3768	akxhbl.exe
3768	akxhbl.exe
1328	akxhbl.exe
1328	akxhbl.exe
4412	akxhbl.exe
4412	akxhbl.exe
3768	akxhbl.exe
3768	akxhbl.exe
3680	akxhbl.exe
3680	akxhbl.exe
3020	akxhbl.exe
3020	akxhbl.exe
4412	akxhbl.exe
1328	akxhbl.exe
4412	akxhbl.exe
1328	akxhbl.exe
3020	akxhbl.exe
3680	akxhbl.exe
3020	akxhbl.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5112	x2woof.exe
Token: SeDebugPrivilege	748	powershell.exe
Token: SeDebugPrivilege	1284	powershell.exe
Token: SeDebugPrivilege	788	powershell.exe
Token: SeDebugPrivilege	2200	powershell.exe
Token: SeDebugPrivilege	5112	x2woof.exe
Token: SeDebugPrivilege	4804	x2woof.exe
Token: SeDebugPrivilege	2252	x2woof.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5112	x2woof.exe
4900	akxhbl.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 5112 wrote to memory of 748	5112	x2woof.exe	89
PID 5112 wrote to memory of 748	5112	x2woof.exe	89
PID 5112 wrote to memory of 1284	5112	x2woof.exe	91
PID 5112 wrote to memory of 1284	5112	x2woof.exe	91
PID 5112 wrote to memory of 788	5112	x2woof.exe	93
PID 5112 wrote to memory of 788	5112	x2woof.exe	93
PID 5112 wrote to memory of 2200	5112	x2woof.exe	97
PID 5112 wrote to memory of 2200	5112	x2woof.exe	97
PID 5112 wrote to memory of 4892	5112	x2woof.exe	102
PID 5112 wrote to memory of 4892	5112	x2woof.exe	102
PID 5112 wrote to memory of 3956	5112	x2woof.exe	118
PID 5112 wrote to memory of 3956	5112	x2woof.exe	118
PID 5112 wrote to memory of 3956	5112	x2woof.exe	118
PID 3956 wrote to memory of 3680	3956	akxhbl.exe	120
PID 3956 wrote to memory of 3680	3956	akxhbl.exe	120
PID 3956 wrote to memory of 3680	3956	akxhbl.exe	120
PID 3956 wrote to memory of 3768	3956	akxhbl.exe	121
PID 3956 wrote to memory of 3768	3956	akxhbl.exe	121
PID 3956 wrote to memory of 3768	3956	akxhbl.exe	121
PID 3956 wrote to memory of 1328	3956	akxhbl.exe	122
PID 3956 wrote to memory of 1328	3956	akxhbl.exe	122
PID 3956 wrote to memory of 1328	3956	akxhbl.exe	122
PID 3956 wrote to memory of 3020	3956	akxhbl.exe	123
PID 3956 wrote to memory of 3020	3956	akxhbl.exe	123
PID 3956 wrote to memory of 3020	3956	akxhbl.exe	123
PID 3956 wrote to memory of 4412	3956	akxhbl.exe	124
PID 3956 wrote to memory of 4412	3956	akxhbl.exe	124
PID 3956 wrote to memory of 4412	3956	akxhbl.exe	124
PID 3956 wrote to memory of 4900	3956	akxhbl.exe	125
PID 3956 wrote to memory of 4900	3956	akxhbl.exe	125
PID 3956 wrote to memory of 4900	3956	akxhbl.exe	125
PID 4900 wrote to memory of 436	4900	akxhbl.exe	128
PID 4900 wrote to memory of 436	4900	akxhbl.exe	128
PID 4900 wrote to memory of 436	4900	akxhbl.exe	128

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\x2woof.exe
"C:\Users\Admin\AppData\Local\Temp\x2woof.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5112
- 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\x2woof.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:748
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'x2woof.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1284
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\x2woof.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:788
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'x2woof.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2200
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "x2woof" /tr "C:\ProgramData\x2woof.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:4892
- C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
  "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3956
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:3680
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:3768
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:1328
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:3020
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /watchdog
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    PID:4412
- - C:\Users\Admin\AppData\Local\Temp\akxhbl.exe
    "C:\Users\Admin\AppData\Local\Temp\akxhbl.exe" /main
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - Writes to the Master Boot Record (MBR)
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:4900
  - - C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\System32\notepad.exe" \note.txt
      4⤵
      System Location Discovery: System Language Discovery
      PID:436

C:\ProgramData\x2woof.exe
C:\ProgramData\x2woof.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4804

C:\ProgramData\x2woof.exe
C:\ProgramData\x2woof.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2252

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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

Pre-OS Boot

T1542

Bootkit

T1542.003

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:\ProgramData\x2woof.exe

Filesize
314KB

MD5
a5ba086a31a86f52e15f428b7b86366b

SHA1
5e7e4c2f1580b464be77ab7c03b0fefad70b901e

SHA256
4441cb86070e91e5c3c1d58c7043cef87f8c07015327ac49a9512b3f61a33a31

SHA512
aca4e8e9a09e2062330dd5f021c4175fd1cb44c8b2b42386e5f0dead8c74b872e75aa80f709deb96215216848afac87d68fd6ce86a02cfd7a5808c148b65fe2c

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\x2woof.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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
da5c82b0e070047f7377042d08093ff4

SHA1
89d05987cd60828cca516c5c40c18935c35e8bd3

SHA256
77a94ef8c4258445d538a6006ffadb05afdf888f6f044e1e5466b981a07f16c5

SHA512
7360311a3c97b73dd3f6d7179cd979e0e20d69f380d38292447e17e369087d9dd5acb66cd0cbdd95ac4bfb16e5a1b86825f835a8d45b14ea9812102cff59704b

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

Filesize
944B

MD5
b7ea079f15251103266e15aede3f1c8d

SHA1
000c19eecd539561bd6e3ca6769479841c7ae839

SHA256
cc84364e997583c4f1e2adc90a2c03fc593a0145846cd5e116c20644d5cd3767

SHA512
25a6b05e83a77c5603b3f80a27b209bd13e6eff33cdfb980798bbb59342c0c9579b56d9d5ac7e36982a77c178cd12e84725eeefa47f5d808bcd40be4250ada37

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_zf1oifdy.fg2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\akxhbl.exe

Filesize
14KB

MD5
19dbec50735b5f2a72d4199c4e184960

SHA1
6fed7732f7cb6f59743795b2ab154a3676f4c822

SHA256
a3d5715a81f2fbeb5f76c88c9c21eeee87142909716472f911ff6950c790c24d

SHA512
aa8a6bbb1ec516d5d5acf8be6863a4c6c5d754cee12b3d374c3a6acb393376806edc422f0ffb661c210e5b9485da88521e4a0956a4b7b08a5467cfaacd90591d

Download Submit
C:\note.txt

Filesize
218B

MD5
afa6955439b8d516721231029fb9ca1b

SHA1
087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

SHA256
8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

SHA512
5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

Download Submit
memory/748-10-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/748-18-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/748-15-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/748-9-0x0000019A7B620000-0x0000019A7B642000-memory.dmp

Filesize
136KB

Download
memory/748-3-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/5112-57-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/5112-0-0x00007FFB67ED3000-0x00007FFB67ED5000-memory.dmp

Filesize
8KB

Download
memory/5112-2-0x00007FFB67ED0000-0x00007FFB68991000-memory.dmp

Filesize
10.8MB

Download
memory/5112-1-0x0000000000610000-0x0000000000664000-memory.dmp

Filesize
336KB

Download