xworm | 24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade

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
19/11/2024, 15:43

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General

Target

Loader.exe
Size

29.3MB
MD5

54fb546b537e9e4efe685d60565b3008
SHA1

81cb60b39b7a4c6abb5004b90351dbb23f80da58
SHA256

24969dc7438810f78b7c98da7542d9925a7f1e327b54eafb475d20fbf47b8ade
SHA512

4e220910c66b9f131f655884cee2fef239e4872242de09ff5de6bde9a50ccd3b448a6c7578e7c3cbfea851f97f236937f11005a5642bf1222b01fa74699f166a
SSDEEP

786432:RutirSLniIrHESgG8VGC76nNLOnx+F5GjMgbeoOmW0uEpT:Rut2SuWHHgGCQN6nxOsjMvhmW0uEpT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

45.141.27.248:7777

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000d000000023a68-13.dat	family_xworm
behavioral2/memory/4320-21-0x0000000000250000-0x0000000000268000-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
1176	powershell.exe
4628	powershell.exe
3708	powershell.exe
4580	powershell.exe

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

Drops startup file 2 IoCs

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

Executes dropped EXE 5 IoCs

pid	Process
1760	loader.exe
4320	svchost.exe
4204	svchost.exe
4056	svchost.exe
4592	svchost.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\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	svchost.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
13	ip-api.com

Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs

pid	Process
1760	loader.exe
1760	loader.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
4540	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4628	powershell.exe
4628	powershell.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe
1760	loader.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	svchost.exe
Token: SeDebugPrivilege	4628	powershell.exe
Token: SeDebugPrivilege	3708	powershell.exe
Token: SeDebugPrivilege	4580	powershell.exe
Token: SeDebugPrivilege	1176	powershell.exe
Token: SeDebugPrivilege	4320	svchost.exe
Token: SeDebugPrivilege	4204	svchost.exe
Token: SeDebugPrivilege	4056	svchost.exe
Token: SeDebugPrivilege	4592	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4320	svchost.exe

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 2584 wrote to memory of 1760	2584	Loader.exe	86
PID 2584 wrote to memory of 1760	2584	Loader.exe	86
PID 2584 wrote to memory of 4320	2584	Loader.exe	88
PID 2584 wrote to memory of 4320	2584	Loader.exe	88
PID 4320 wrote to memory of 4628	4320	svchost.exe	93
PID 4320 wrote to memory of 4628	4320	svchost.exe	93
PID 1760 wrote to memory of 3760	1760	loader.exe	95
PID 1760 wrote to memory of 3760	1760	loader.exe	95
PID 4320 wrote to memory of 3708	4320	svchost.exe	96
PID 4320 wrote to memory of 3708	4320	svchost.exe	96
PID 3760 wrote to memory of 3952	3760	cmd.exe	98
PID 3760 wrote to memory of 3952	3760	cmd.exe	98
PID 4320 wrote to memory of 4580	4320	svchost.exe	100
PID 4320 wrote to memory of 4580	4320	svchost.exe	100
PID 1760 wrote to memory of 4948	1760	loader.exe	102
PID 1760 wrote to memory of 4948	1760	loader.exe	102
PID 4320 wrote to memory of 1176	4320	svchost.exe	103
PID 4320 wrote to memory of 1176	4320	svchost.exe	103
PID 4320 wrote to memory of 4540	4320	svchost.exe	105
PID 4320 wrote to memory of 4540	4320	svchost.exe	105
PID 1760 wrote to memory of 768	1760	loader.exe	109
PID 1760 wrote to memory of 768	1760	loader.exe	109

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\Loader.exe
"C:\Users\Admin\AppData\Local\Temp\Loader.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Users\Admin\AppData\Roaming\loader.exe
  "C:\Users\Admin\AppData\Roaming\loader.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of NtSetInformationThreadHideFromDebugger
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1760
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c MODE CON COLS=80 LINES=20
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3760
  - - C:\Windows\system32\mode.com
      MODE CON COLS=80 LINES=20
      4⤵
      PID:3952
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:4948
- - C:\Windows\system32\cmd.exe
    C:\Windows\system32\cmd.exe /c cls
    3⤵
    PID:768
- C:\Users\Admin\AppData\Roaming\svchost.exe
  "C:\Users\Admin\AppData\Roaming\svchost.exe"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4320
- - 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:4628
- - 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 use of AdjustPrivilegeToken
    PID:3708
- - 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 use of AdjustPrivilegeToken
    PID:4580
- - 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 use of AdjustPrivilegeToken
    PID:1176
- - 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:4540

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4204

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4056

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4592

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\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\svchost.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
8b0fa5bb931381266db74160bf829cd5

SHA1
a09f7b0366d527e91e4e51c123fbe313dae2fc95

SHA256
3d3112fe048034402d17e26c4f214bb47570039c4bbd384574f454fc6120925b

SHA512
fe4f71f6883df1d5baa6d13e24e90000ed1a184ab968dbd4ebbaf6c854f05ab9da86e3602693da57bbb8997c15350b7b22bcc3a781a77a58beb60e478a7b2631

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

Filesize
944B

MD5
b7189719e6df2c3dfc76197ec3f31f7a

SHA1
effd91412deadc87cc10ef76cdecc1e0b54b6d41

SHA256
1c72fa37d078b92c7e900b2e3d17c43c34d936a696a8ddf6c519f4a80308b892

SHA512
2df1f1d45844da7ffb17cdfb411f223e9c614c00f5cf7eb5ba92bf7ba174875af2a515371208286c95c0479c934ae2c6a83dfc0b54380be89db1eddd19faf978

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ltcxnge1.nxb.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Roaming\loader.exe

Filesize
29.3MB

MD5
170db7116b898427029ab7fc3c3c8bb9

SHA1
8d2d059d31e06d6234afc051fc2710111ee7370e

SHA256
7c52608e6509a39e649a932bc55769d7c2a43e84744c761aaf3fa4a01013ef1f

SHA512
c06b958fb85aa9de340da70ce02a729b5c1babc88040203d58001dee0dedfdf26621569bb1797f7c5620f7af51e09291d7b399e44a2fcddce476a27101f41090

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe

Filesize
70KB

MD5
e9a629dd7b0accda9d7696fc15135663

SHA1
d3643c86610e441da6304670fe7e5c2d07d1a6df

SHA256
bace1c7a8d5498687db5abc129d37373a918d5bda3ef11b94f21b3807887e799

SHA512
cceadc67f570e0165b0925b450e06eac2c46552e0b646a761862f5e6290fbdd727b84b41ca23470edf42da623643f29c58ea5a01bcf084f4488476ecace144d6

Download Submit
memory/1760-35-0x00007FF7DEA50000-0x00007FF7E1BC7000-memory.dmp

Filesize
49.5MB

Download
memory/1760-34-0x00007FFF0EF80000-0x00007FFF0EF82000-memory.dmp

Filesize
8KB

Download
memory/1760-33-0x00007FFF0EF70000-0x00007FFF0EF72000-memory.dmp

Filesize
8KB

Download
memory/2584-0-0x00007FFEF0383000-0x00007FFEF0385000-memory.dmp

Filesize
8KB

Download
memory/2584-1-0x00000000005A0000-0x00000000022FE000-memory.dmp

Filesize
29.4MB

Download
memory/4320-21-0x0000000000250000-0x0000000000268000-memory.dmp

Filesize
96KB

Download
memory/4628-32-0x000001A5F6FB0000-0x000001A5F6FD2000-memory.dmp

Filesize
136KB

Download