xworm | 834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf

General

Target

SolaraX.exe
Size

74KB
MD5

aef41983064b12d1e648100e8141bf19
SHA1

b258d4a810e818e9c9dcaba62f75f34036b60fcd
SHA256

834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf
SHA512

2e4e3fdf7cd1892b73cf1989dfd82d91c677653a4501f44bb2d74b153b72982e069998b5bef097a7645970838c13ac86ec546173f6baf3afb7cbc26e6c9d5524
SSDEEP

1536:CSwcF9ZPLxJfu4OjKOd5fbLioM5706leROrV3P7UN:dwcF9ZPG4O+Od5fbLilveROrpw

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:34930

minimum-ball.gl.at.ply.gg:34930

Attributes

Install_directory
%AppData%
install_file
SolaraX.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/640-1-0x0000000000600000-0x0000000000618000-memory.dmp	family_xworm
behavioral2/files/0x0007000000022a03-58.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
228	powershell.exe
3032	powershell.exe
2164	powershell.exe
4964	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-1-5-21-22591836-1183090055-1220658180-1000\Control Panel\International\Geo\Nation	SolaraX.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
4420	SolaraX.exe
396	SolaraX.exe
972	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-1-5-21-22591836-1183090055-1220658180-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\SolaraX = "C:\\Users\\Admin\\AppData\\Roaming\\SolaraX.exe"	SolaraX.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
2736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
228	powershell.exe
228	powershell.exe
3032	powershell.exe
3032	powershell.exe
2164	powershell.exe
2164	powershell.exe
4964	powershell.exe
4964	powershell.exe
640	SolaraX.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	640	SolaraX.exe
Token: SeDebugPrivilege	228	powershell.exe
Token: SeDebugPrivilege	3032	powershell.exe
Token: SeDebugPrivilege	2164	powershell.exe
Token: SeDebugPrivilege	4964	powershell.exe
Token: SeDebugPrivilege	640	SolaraX.exe
Token: SeDebugPrivilege	4420	SolaraX.exe
Token: SeDebugPrivilege	396	SolaraX.exe
Token: SeDebugPrivilege	972	SolaraX.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
640	SolaraX.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 228	640	SolaraX.exe	89
PID 640 wrote to memory of 228	640	SolaraX.exe	89
PID 640 wrote to memory of 3032	640	SolaraX.exe	91
PID 640 wrote to memory of 3032	640	SolaraX.exe	91
PID 640 wrote to memory of 2164	640	SolaraX.exe	95
PID 640 wrote to memory of 2164	640	SolaraX.exe	95
PID 640 wrote to memory of 4964	640	SolaraX.exe	97
PID 640 wrote to memory of 4964	640	SolaraX.exe	97
PID 640 wrote to memory of 2736	640	SolaraX.exe	101
PID 640 wrote to memory of 2736	640	SolaraX.exe	101

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\SolaraX.exe
"C:\Users\Admin\AppData\Local\Temp\SolaraX.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:640
- 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\SolaraX.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:228
- 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:3032
- 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:2164
- 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:4964
- 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:2736

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4420

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:396

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:972

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
6d3e9c29fe44e90aae6ed30ccf799ca8

SHA1
c7974ef72264bbdf13a2793ccf1aed11bc565dce

SHA256
2360634e63e8f0b5748e2c56ebb8f4aa78e71008ea7b5c9ca1c49be03b49557d

SHA512
60c38c4367352537545d859f64b9c5cbada94240478d1d039fd27b5ecba4dc1c90051557c16d802269703b873546ead416279c0a80c6fd5e49ad361cef22596a

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

Filesize
944B

MD5
fd98baf5a9c30d41317663898985593b

SHA1
ea300b99f723d2429d75a6c40e0838bf60f17aad

SHA256
9d97a5bbc88fdcceac25f293383f7e5ce242675460ffbfb2ee9090870c034e96

SHA512
bf4dbbd671b5d7afb326622a7c781f150860294d3dba7160330046c258c84a15981c70e50d84dc7faaa7cc8b8c90bf8df818b3f2d3806a8a3671dfe5e38fe7b0

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

Filesize
944B

MD5
15dde0683cd1ca19785d7262f554ba93

SHA1
d039c577e438546d10ac64837b05da480d06bf69

SHA256
d6fa39eab7ee36f44dc3f9f2839d098433db95c1eba924e4bcf4e5c0d268d961

SHA512
57c0e1b87bc1c136f0d39f3ce64bb8f8274a0491e4ca6e45e5c7f9070aa9d9370c6f590ce37cd600b252df2638d870205249a514c43245ca7ed49017024a4672

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_g3w4w2ax.3cx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
74KB

MD5
aef41983064b12d1e648100e8141bf19

SHA1
b258d4a810e818e9c9dcaba62f75f34036b60fcd

SHA256
834bcea2665dc99b4c16fe87095f3e2b44e2e013ec1017407a061a1203c2f3cf

SHA512
2e4e3fdf7cd1892b73cf1989dfd82d91c677653a4501f44bb2d74b153b72982e069998b5bef097a7645970838c13ac86ec546173f6baf3afb7cbc26e6c9d5524

Download Submit
memory/228-12-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/228-17-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/228-14-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/228-13-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/228-7-0x0000016644110000-0x0000016644132000-memory.dmp

Filesize
136KB

Download
memory/640-0-0x00007FFB2A513000-0x00007FFB2A515000-memory.dmp

Filesize
8KB

Download
memory/640-56-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/640-57-0x00007FFB2A513000-0x00007FFB2A515000-memory.dmp

Filesize
8KB

Download
memory/640-61-0x00007FFB2A510000-0x00007FFB2AFD1000-memory.dmp

Filesize
10.8MB

Download
memory/640-1-0x0000000000600000-0x0000000000618000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads