xworm | 188d525daed5c014ea5ae62a1fd1841d783693e41712ea58b9906cda2b60dbed

General

Target

X.exe
Size

82KB
MD5

b201ce5dcb58284da7a5ef6294418e56
SHA1

27573051f80debfd74e1a72d27cfd29f58c76d7e
SHA256

188d525daed5c014ea5ae62a1fd1841d783693e41712ea58b9906cda2b60dbed
SHA512

f282f9efa40ce5e753faf803079af9aae478711e6e2f3dcf09c744ae3e670c6ef0cb18b62c8e57ba825faef8c396dd481768ef0680681d4b1b80ad1c3433f11c
SSDEEP

1536:D2wgD0/WhgBpRCn3wtSD+bQ6QqTMj34Al6G4tIzOasNnP6UO:ywkeWQCn1+bQdjrytuOa6Sz

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:36623

fax-scenarios.gl.at.ply.gg:36623

Attributes

Install_directory
%AppData%
install_file
SolaraX.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral1/memory/5040-1-0x0000000000990000-0x00000000009AA000-memory.dmp	family_xworm
behavioral1/files/0x000300000001e99b-60.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
4604	powershell.exe
1908	powershell.exe
3364	powershell.exe
4396	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-1161330783-2912525651-1278508834-1000\Control Panel\International\Geo\Nation	X.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 15 IoCs

pid	Process
1940	SolaraX.exe
2556	SolaraX.exe
3560	SolaraX.exe
4992	SolaraX.exe
4972	SolaraX.exe
4876	SolaraX.exe
1844	SolaraX.exe
4512	SolaraX.exe
3632	SolaraX.exe
1948	SolaraX.exe
3732	SolaraX.exe
1312	SolaraX.exe
32	SolaraX.exe
1188	SolaraX.exe
4464	SolaraX.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-1-5-21-1161330783-2912525651-1278508834-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SolaraX = "C:\\Users\\Admin\\AppData\\Roaming\\SolaraX.exe"	X.exe

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

System Information Discovery
T1082

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1161330783-2912525651-1278508834-1000_Classes\Local Settings	calc.exe
Key created	\REGISTRY\USER\S-1-5-21-1161330783-2912525651-1278508834-1000_Classes\Local Settings	explorer.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
2284	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4604	powershell.exe
4604	powershell.exe
1908	powershell.exe
1908	powershell.exe
3364	powershell.exe
3364	powershell.exe
4396	powershell.exe
4396	powershell.exe
5040	X.exe

Suspicious use of AdjustPrivilegeToken 21 IoCs

description	pid	Process
Token: SeDebugPrivilege	5040	X.exe
Token: SeDebugPrivilege	4604	powershell.exe
Token: SeDebugPrivilege	1908	powershell.exe
Token: SeDebugPrivilege	3364	powershell.exe
Token: SeDebugPrivilege	4396	powershell.exe
Token: SeDebugPrivilege	5040	X.exe
Token: SeDebugPrivilege	1940	SolaraX.exe
Token: SeDebugPrivilege	2556	SolaraX.exe
Token: SeDebugPrivilege	3560	SolaraX.exe
Token: SeDebugPrivilege	4992	SolaraX.exe
Token: SeDebugPrivilege	4972	SolaraX.exe
Token: SeDebugPrivilege	4876	SolaraX.exe
Token: SeDebugPrivilege	1844	SolaraX.exe
Token: SeDebugPrivilege	4512	SolaraX.exe
Token: SeDebugPrivilege	3632	SolaraX.exe
Token: SeDebugPrivilege	1948	SolaraX.exe
Token: SeDebugPrivilege	3732	SolaraX.exe
Token: SeDebugPrivilege	1312	SolaraX.exe
Token: SeDebugPrivilege	32	SolaraX.exe
Token: SeDebugPrivilege	1188	SolaraX.exe
Token: SeDebugPrivilege	4464	SolaraX.exe

Suspicious use of FindShellTrayWindow 3 IoCs

pid	Process
5040	X.exe
5040	X.exe
5040	X.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
5040	X.exe
3964	OpenWith.exe

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 5040 wrote to memory of 4604	5040	X.exe	91
PID 5040 wrote to memory of 4604	5040	X.exe	91
PID 5040 wrote to memory of 1908	5040	X.exe	93
PID 5040 wrote to memory of 1908	5040	X.exe	93
PID 5040 wrote to memory of 3364	5040	X.exe	97
PID 5040 wrote to memory of 3364	5040	X.exe	97
PID 5040 wrote to memory of 4396	5040	X.exe	99
PID 5040 wrote to memory of 4396	5040	X.exe	99
PID 5040 wrote to memory of 2284	5040	X.exe	104
PID 5040 wrote to memory of 2284	5040	X.exe	104
PID 5040 wrote to memory of 1752	5040	X.exe	121
PID 5040 wrote to memory of 1752	5040	X.exe	121
PID 1752 wrote to memory of 684	1752	cmd.exe	123
PID 1752 wrote to memory of 684	1752	cmd.exe	123
PID 5040 wrote to memory of 2432	5040	X.exe	125
PID 5040 wrote to memory of 2432	5040	X.exe	125

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\X.exe
"C:\Users\Admin\AppData\Local\Temp\X.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 FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:5040
- 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\X.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4604
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'X.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1908
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3364
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4396
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "SolaraX" /tr "C:\Users\Admin\AppData\Roaming\SolaraX.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2284
- C:\Windows\SYSTEM32\cmd.exe
  cmd.exe /c start calc
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1752
- - C:\Windows\system32\calc.exe
    calc
    3⤵
    - Modifies registry class
    PID:684
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe"
  2⤵
  - Modifies registry class
  PID:2432

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1940

C:\Windows\system32\OpenWith.exe
C:\Windows\system32\OpenWith.exe -Embedding
1⤵
- Suspicious use of SetWindowsHookEx
PID:3964

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2556

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3560

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4992

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4972

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4876

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1844

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4512

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3632

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1948

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3732

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1312

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:32

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1188

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\SolaraX.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
cadef9abd087803c630df65264a6c81c

SHA1
babbf3636c347c8727c35f3eef2ee643dbcc4bd2

SHA256
cce65b73cdfe9304bcd5207913e8b60fb69faa20cd3b684f2b0343b755b99438

SHA512
7278aa87124abb382d9024a645e881e7b7cf1b84e8894943b36e018dbf0399e6858392f77980b599fa5488e2e21bf757a0702fe6419417edac93b68e0c2ec085

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

Filesize
944B

MD5
ba169f4dcbbf147fe78ef0061a95e83b

SHA1
92a571a6eef49fff666e0f62a3545bcd1cdcda67

SHA256
5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1

SHA512
8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c

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

Filesize
944B

MD5
34f595487e6bfd1d11c7de88ee50356a

SHA1
4caad088c15766cc0fa1f42009260e9a02f953bb

SHA256
0f9a4b52e01cb051052228a55d0515911b7ef5a8db3cf925528c746df511424d

SHA512
10976c5deaf9fac449e703e852c3b08d099f430de2d7c7b8e2525c35d63e28b890e5aab63feff9b20bca0aaf9f35a3ba411aee3fbeee9ea59f90ed25bd617a0b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_tvcjxt55.p0o.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
82KB

MD5
b201ce5dcb58284da7a5ef6294418e56

SHA1
27573051f80debfd74e1a72d27cfd29f58c76d7e

SHA256
188d525daed5c014ea5ae62a1fd1841d783693e41712ea58b9906cda2b60dbed

SHA512
f282f9efa40ce5e753faf803079af9aae478711e6e2f3dcf09c744ae3e670c6ef0cb18b62c8e57ba825faef8c396dd481768ef0680681d4b1b80ad1c3433f11c

Download Submit
memory/4604-13-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/4604-17-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/4604-14-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/4604-12-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/4604-11-0x0000016BD6D90000-0x0000016BD6DB2000-memory.dmp

Filesize
136KB

Download
memory/5040-0-0x00007FFE388C3000-0x00007FFE388C5000-memory.dmp

Filesize
8KB

Download
memory/5040-56-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/5040-57-0x00007FFE388C3000-0x00007FFE388C5000-memory.dmp

Filesize
8KB

Download
memory/5040-58-0x00007FFE388C0000-0x00007FFE39381000-memory.dmp

Filesize
10.8MB

Download
memory/5040-59-0x000000001B630000-0x000000001B63C000-memory.dmp

Filesize
48KB

Download
memory/5040-63-0x000000001C2D0000-0x000000001C2DC000-memory.dmp

Filesize
48KB

Download
memory/5040-65-0x0000000002B60000-0x0000000002B6A000-memory.dmp

Filesize
40KB

Download
memory/5040-1-0x0000000000990000-0x00000000009AA000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads