xworm | 188d525daed5c014ea5ae62a1fd1841d783693e41712ea58b9906cda2b60dbed

General

Target

SolaraX.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/2716-1-0x0000000000760000-0x000000000077A000-memory.dmp	family_xworm
behavioral1/files/0x000f00000001e4cd-59.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
1476	powershell.exe
212	powershell.exe
1764	powershell.exe
1424	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-1-5-21-1874072718-2205492803-118941907-1000\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
1504	SolaraX.exe
5032	SolaraX.exe
2668	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-1-5-21-1874072718-2205492803-118941907-1000\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
4908	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1476	powershell.exe
1476	powershell.exe
212	powershell.exe
212	powershell.exe
1764	powershell.exe
1764	powershell.exe
1424	powershell.exe
1424	powershell.exe
2716	SolaraX.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	2716	SolaraX.exe
Token: SeDebugPrivilege	1476	powershell.exe
Token: SeDebugPrivilege	212	powershell.exe
Token: SeDebugPrivilege	1764	powershell.exe
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeDebugPrivilege	2716	SolaraX.exe
Token: SeDebugPrivilege	1504	SolaraX.exe
Token: SeDebugPrivilege	5032	SolaraX.exe
Token: SeDebugPrivilege	2668	SolaraX.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2716	SolaraX.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 2716 wrote to memory of 1476	2716	SolaraX.exe	90
PID 2716 wrote to memory of 1476	2716	SolaraX.exe	90
PID 2716 wrote to memory of 212	2716	SolaraX.exe	94
PID 2716 wrote to memory of 212	2716	SolaraX.exe	94
PID 2716 wrote to memory of 1764	2716	SolaraX.exe	96
PID 2716 wrote to memory of 1764	2716	SolaraX.exe	96
PID 2716 wrote to memory of 1424	2716	SolaraX.exe	98
PID 2716 wrote to memory of 1424	2716	SolaraX.exe	98
PID 2716 wrote to memory of 4908	2716	SolaraX.exe	101
PID 2716 wrote to memory of 4908	2716	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:2716
- 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:1476
- 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:212
- 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:1764
- 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:1424
- 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:4908

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1504

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5032

C:\Users\Admin\AppData\Roaming\SolaraX.exe
C:\Users\Admin\AppData\Roaming\SolaraX.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2668

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
6d42b6da621e8df5674e26b799c8e2aa

SHA1
ab3ce1327ea1eeedb987ec823d5e0cb146bafa48

SHA256
5ab6a1726f425c6d0158f55eb8d81754ddedd51e651aa0a899a29b7a58619c4c

SHA512
53faffbda8a835bc1143e894c118c15901a5fd09cfc2224dd2f754c06dc794897315049a579b9a8382d4564f071576045aaaf824019b7139d939152dca38ce29

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

Filesize
944B

MD5
76c6e3b2ad1433171c41ab35f72143bd

SHA1
1cd60281833c9e7f528368c33ea35ea089c171df

SHA256
741bd92f96f875e51d3c05150f8ad84422543abd5394979dae0c079e01a5b7d9

SHA512
807113b376297489bf13f2f2ece4dafda2b033d89bc911b6575ec84254c51a417258747d09b08b548c3ba7fd8087a58095601526b7fe740dfe816b00c1638afa

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

Filesize
944B

MD5
ec66606831e595ea115f35d1b61b7105

SHA1
f22d025450dc8dafd9b434b2eb31cb876bcb8109

SHA256
4f17fe98ecf3ea9ec9873ff0a3acdd6ca93eb17e280a01ff6cfeca4422019dec

SHA512
f2922870f0b34b5cd8a75ce3aa94362a43997a752b0e8e9001f63d650225bf15415a75ce8aa333e4d3554a52ca5d40eec7b15ce67e3ee20441cf2680de59ed5d

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_20jq4ksq.5tv.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/1476-12-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/1476-17-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/1476-14-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/1476-13-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/1476-2-0x000001CADE8B0000-0x000001CADE8D2000-memory.dmp

Filesize
136KB

Download
memory/2716-0-0x00007FFF24243000-0x00007FFF24245000-memory.dmp

Filesize
8KB

Download
memory/2716-56-0x00007FFF24243000-0x00007FFF24245000-memory.dmp

Filesize
8KB

Download
memory/2716-57-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/2716-58-0x00007FFF24240000-0x00007FFF24D01000-memory.dmp

Filesize
10.8MB

Download
memory/2716-61-0x0000000002990000-0x000000000299C000-memory.dmp

Filesize
48KB

Download
memory/2716-1-0x0000000000760000-0x000000000077A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads