xworm | 6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9

General

Target

Solara.exe
Size

44KB
MD5

1150929a02621ff0d0be6733e29384b9
SHA1

492a4b13def38b1b62c41450a3b885a18c979c52
SHA256

6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9
SHA512

a98cb8995b4634e9d8fb636be85715aac9012b9809f8fb294900e3380660379575ab33c4d01b79ddf9508afa6e03847bdf26b242dbb45bcc6cd79c49486b3639
SSDEEP

768:ohMJ+n2DNw1N1QbEblsUUdvFFRPG9+h2P/6OOChEvmbWT:QMUn2uBEbvFw9+8/6OOC+uiT

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

127.0.0.1:46867

10.9.76.6:46867

192.168.56.1:46867

192.168.1.6:46867

172.23.0.1:46867

disease-tattoo.gl.at.ply.gg:46867

Mutex

g7MF6jpeNipSWFbJ

Attributes

Install_directory
%AppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1528-1-0x0000000000CA0000-0x0000000000CB2000-memory.dmp	family_xworm
behavioral2/files/0x000e00000001e450-61.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
2668	powershell.exe
1076	powershell.exe
2496	powershell.exe
5068	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-1-5-21-925314154-1797147466-1467878628-1000\Control Panel\International\Geo\Nation	Solara.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2044	svchost.exe
3916	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-1-5-21-925314154-1797147466-1467878628-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Solara.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
3980	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
1076	powershell.exe
1076	powershell.exe
2496	powershell.exe
2496	powershell.exe
5068	powershell.exe
5068	powershell.exe
2668	powershell.exe
2668	powershell.exe
1528	Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	1528	Solara.exe
Token: SeDebugPrivilege	1076	powershell.exe
Token: SeDebugPrivilege	2496	powershell.exe
Token: SeDebugPrivilege	5068	powershell.exe
Token: SeDebugPrivilege	2668	powershell.exe
Token: SeDebugPrivilege	1528	Solara.exe
Token: SeDebugPrivilege	2044	svchost.exe
Token: SeDebugPrivilege	3916	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1528	Solara.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1528 wrote to memory of 1076	1528	Solara.exe	91
PID 1528 wrote to memory of 1076	1528	Solara.exe	91
PID 1528 wrote to memory of 2496	1528	Solara.exe	94
PID 1528 wrote to memory of 2496	1528	Solara.exe	94
PID 1528 wrote to memory of 5068	1528	Solara.exe	97
PID 1528 wrote to memory of 5068	1528	Solara.exe	97
PID 1528 wrote to memory of 2668	1528	Solara.exe	99
PID 1528 wrote to memory of 2668	1528	Solara.exe	99
PID 1528 wrote to memory of 3980	1528	Solara.exe	102
PID 1528 wrote to memory of 3980	1528	Solara.exe	102

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\Solara.exe
"C:\Users\Admin\AppData\Local\Temp\Solara.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:1528
- 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\Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1076
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2496
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:5068
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2668
- 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"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3980

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2044

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3916

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\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
77d622bb1a5b250869a3238b9bc1402b

SHA1
d47f4003c2554b9dfc4c16f22460b331886b191b

SHA256
f97ff12a8abf4bf88bb6497bd2ac2da12628c8847a8ba5a9026bdbb76507cdfb

SHA512
d6789b5499f23c9035375a102271e17a8a82e57d6f5312fa24242e08a83efdeb8becb7622f55c4cf1b89c7d864b445df11f4d994cf7e2f87a900535bcca12fd9

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

Filesize
944B

MD5
d65ebc84c6b0b52901fb46f5e2b83ab5

SHA1
d036a0c3eb9e1616d0f7f5ca41171060c13a3095

SHA256
d45581b0807a0d04a70ec75e3e4575e73f148e5b4e0d3d325dfbd6400a4bfbd1

SHA512
88ac232e7702ebd53788cf8429d266ae367111bfccf4bc9d40ead25b552347521458ca60d320e2775b5d2edcaf8501251cb2db68b38dc000ac50463fb80865be

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

Filesize
944B

MD5
6010e022cfcf213cca762933d10506c3

SHA1
782ac7d9e6ab9ec99eb1f3f893d7619de3bcb398

SHA256
d223a6db31813db577d47604c9120f1d3d399b6a527ff5d886fc2f0def19b3bb

SHA512
b4498fc6abd26786c222ca7c31cd1506fb38fe171ee8184a79037e07cfae387aa0b9eaab3df81d04a8250de600538dcbaa9fbc509ba837ac6bf41dcb71351ccd

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sy52qoj3.vop.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
44KB

MD5
1150929a02621ff0d0be6733e29384b9

SHA1
492a4b13def38b1b62c41450a3b885a18c979c52

SHA256
6d7a1d6a51fcb0bf6ef1068a108f53b492337f63cad4555d706e835da63519a9

SHA512
a98cb8995b4634e9d8fb636be85715aac9012b9809f8fb294900e3380660379575ab33c4d01b79ddf9508afa6e03847bdf26b242dbb45bcc6cd79c49486b3639

Download Submit
memory/1076-12-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1076-17-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1076-14-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1076-13-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1076-2-0x0000024937A80000-0x0000024937AA2000-memory.dmp

Filesize
136KB

Download
memory/1528-0-0x00007FFFB9153000-0x00007FFFB9155000-memory.dmp

Filesize
8KB

Download
memory/1528-58-0x00007FFFB9153000-0x00007FFFB9155000-memory.dmp

Filesize
8KB

Download
memory/1528-59-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1528-60-0x00007FFFB9150000-0x00007FFFB9C11000-memory.dmp

Filesize
10.8MB

Download
memory/1528-1-0x0000000000CA0000-0x0000000000CB2000-memory.dmp

Filesize
72KB

Download
memory/2496-30-0x0000023C78520000-0x0000023C7873C000-memory.dmp

Filesize
2.1MB

Download
memory/5068-42-0x000002D574C60000-0x000002D574E7C000-memory.dmp

Filesize
2.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads