xworm | 746c77a58163dd078211c86687ae3a7d8b3af1cb948983a8f4f7ce2167d22dad

General

Target

BootstrapperNew.exe
Size

3.0MB
MD5

bff87092bbbb8b265f9109351bb705b4
SHA1

f77384b9700f4899eb9b6e973a3f67258b8b38a1
SHA256

746c77a58163dd078211c86687ae3a7d8b3af1cb948983a8f4f7ce2167d22dad
SHA512

04acf2774bc60acfb7506e32925acd33c1f9fffd4e0f903858172ab9c892203489a98874ef441f6cc70053f51bc737d9dd719d0b5f72e9e8f43c40b1d223ec0e
SSDEEP

49152:OQJmPAp/HK6UBdnBwpirpcWBpfk2nQdHQrAVbJ432MuMd2jPEa:1mG/HKBBNfco8qisAw3gMYj

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:7000

google-rocks.gl.at.ply.gg:7000

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x000800000001878c-11.dat	family_xworm
behavioral1/memory/3008-14-0x0000000000D30000-0x0000000000D4A000-memory.dmp	family_xworm
behavioral1/memory/2912-66-0x0000000000300000-0x000000000031A000-memory.dmp	family_xworm
behavioral1/memory/2176-69-0x0000000000080000-0x000000000009A000-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
2772	powershell.exe
2720	powershell.exe
2680	powershell.exe
2044	powershell.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 5 IoCs

pid	Process
2108	Bootstrapper.exe
3008	Solara.exe
1208	Process not Found
2912	svchost.exe
2176	svchost.exe

Loads dropped DLL 2 IoCs

pid	Process
2112	BootstrapperNew.exe
1208	Process not Found

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-1-5-21-4177215427-74451935-3209572229-1000\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
1956	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2772	powershell.exe
2720	powershell.exe
2680	powershell.exe
2044	powershell.exe
3008	Solara.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	3008	Solara.exe
Token: SeDebugPrivilege	2772	powershell.exe
Token: SeDebugPrivilege	2720	powershell.exe
Token: SeDebugPrivilege	2680	powershell.exe
Token: SeDebugPrivilege	2044	powershell.exe
Token: SeDebugPrivilege	3008	Solara.exe
Token: SeDebugPrivilege	2912	svchost.exe
Token: SeDebugPrivilege	2176	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3008	Solara.exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2112 wrote to memory of 2108	2112	BootstrapperNew.exe	30
PID 2112 wrote to memory of 2108	2112	BootstrapperNew.exe	30
PID 2112 wrote to memory of 2108	2112	BootstrapperNew.exe	30
PID 2112 wrote to memory of 3008	2112	BootstrapperNew.exe	31
PID 2112 wrote to memory of 3008	2112	BootstrapperNew.exe	31
PID 2112 wrote to memory of 3008	2112	BootstrapperNew.exe	31
PID 3008 wrote to memory of 2772	3008	Solara.exe	32
PID 3008 wrote to memory of 2772	3008	Solara.exe	32
PID 3008 wrote to memory of 2772	3008	Solara.exe	32
PID 3008 wrote to memory of 2720	3008	Solara.exe	34
PID 3008 wrote to memory of 2720	3008	Solara.exe	34
PID 3008 wrote to memory of 2720	3008	Solara.exe	34
PID 3008 wrote to memory of 2680	3008	Solara.exe	37
PID 3008 wrote to memory of 2680	3008	Solara.exe	37
PID 3008 wrote to memory of 2680	3008	Solara.exe	37
PID 3008 wrote to memory of 2044	3008	Solara.exe	39
PID 3008 wrote to memory of 2044	3008	Solara.exe	39
PID 3008 wrote to memory of 2044	3008	Solara.exe	39
PID 3008 wrote to memory of 1956	3008	Solara.exe	41
PID 3008 wrote to memory of 1956	3008	Solara.exe	41
PID 3008 wrote to memory of 1956	3008	Solara.exe	41
PID 2228 wrote to memory of 2912	2228	taskeng.exe	44
PID 2228 wrote to memory of 2912	2228	taskeng.exe	44
PID 2228 wrote to memory of 2912	2228	taskeng.exe	44
PID 2228 wrote to memory of 2176	2228	taskeng.exe	45
PID 2228 wrote to memory of 2176	2228	taskeng.exe	45
PID 2228 wrote to memory of 2176	2228	taskeng.exe	45

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\BootstrapperNew.exe
"C:\Users\Admin\AppData\Local\Temp\BootstrapperNew.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2112
- C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe
  "C:\Users\Admin\AppData\Local\Temp\Bootstrapper.exe"
  2⤵
  - Executes dropped EXE
  PID:2108
- C:\Users\Admin\AppData\Local\Temp\Solara.exe
  "C:\Users\Admin\AppData\Local\Temp\Solara.exe"
  2⤵
  - Drops startup file
  - Executes dropped EXE
  - Adds Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3008
- - 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'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2772
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Solara.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2720
- - 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:2680
- - 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 behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2044
- - 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:1956

C:\Windows\system32\taskeng.exe
taskeng.exe {F5FC80A3-71D9-4061-9819-361DD5E612C5} S-1-5-21-4177215427-74451935-3209572229-1000:JSMURNPT\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2912
- C:\Users\Admin\AppData\Roaming\svchost.exe
  C:\Users\Admin\AppData\Roaming\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2176

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

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Solara.exe

Filesize
76KB

MD5
26b3ebae00dafdc80bd84c31c7f0e553

SHA1
55a47080a93ad6b69069ee3a58d8c2ffbbf20861

SHA256
68ead7f94d34fa9e8eef5016506da5a1d3e2cdb513f02880785b535051a88b52

SHA512
0c99e08108b6e0887d755fb1e3e93e69736a2b3b6636a0c4a372b18feb6a4cb749f46b1a9dac16d993e955c052ca9056efb79b72b4fb9c71b800f48604a26905

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
5d49fd78b57ebe2779f18e0ae6e948c6

SHA1
14c9ed40f0911f347ee62ac7e56adaf4a19e97e2

SHA256
71c86d1213fd64edcfce6e92c3e6e08e0a9f297640be4cc6ca69a8cd187c0ba9

SHA512
aea3723828c77cb229ac4a765b1433388440b9bf399cb568825a323f6501a5618b07a321851269fdd26aa2dee5d0f79a274a0909074b8aba6b89686787566f59

Download Submit
\Users\Admin\AppData\Local\Temp\Bootstrapper.exe

Filesize
2.9MB

MD5
f227cdfd423b3cc03bb69c49babf4da3

SHA1
3db5a97d9b0f2545e7ba97026af6c28512200441

SHA256
cb5d6c1ca0aa6232a2d55e14b20ac4a9945a0bd063c57d60a5ed3ae94160e3e8

SHA512
b10afd03b02a928545c16fad39a6ae46b68b1e1a2477a6990803ce80008e7161fb2ebc9380ba15a1b074bb436aa34bcd6c94a922933d438b1c22489717e1e10e

Download Submit
memory/2108-16-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-29-0x00000000027D0000-0x00000000027D8000-memory.dmp

Filesize
32KB

Download
memory/2108-15-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-62-0x00000000008E0000-0x00000000008EA000-memory.dmp

Filesize
40KB

Download
memory/2108-18-0x00000000008E0000-0x00000000008EA000-memory.dmp

Filesize
40KB

Download
memory/2108-17-0x00000000008E0000-0x00000000008EA000-memory.dmp

Filesize
40KB

Download
memory/2108-19-0x00000000008E0000-0x00000000008F0000-memory.dmp

Filesize
64KB

Download
memory/2108-22-0x000000001C360000-0x000000001C460000-memory.dmp

Filesize
1024KB

Download
memory/2108-23-0x0000000000F80000-0x0000000000F8A000-memory.dmp

Filesize
40KB

Download
memory/2108-25-0x00000000027A0000-0x00000000027A8000-memory.dmp

Filesize
32KB

Download
memory/2108-27-0x0000000002790000-0x000000000279A000-memory.dmp

Filesize
40KB

Download
memory/2108-26-0x00000000027B0000-0x00000000027C6000-memory.dmp

Filesize
88KB

Download
memory/2108-24-0x0000000000F90000-0x0000000000FB6000-memory.dmp

Filesize
152KB

Download
memory/2108-61-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-28-0x0000000000F70000-0x0000000000F7A000-memory.dmp

Filesize
40KB

Download
memory/2108-60-0x000007FEF5520000-0x000007FEF5F0C000-memory.dmp

Filesize
9.9MB

Download
memory/2108-12-0x0000000000FC0000-0x00000000012A2000-memory.dmp

Filesize
2.9MB

Download
memory/2112-1-0x0000000000250000-0x000000000054C000-memory.dmp

Filesize
3.0MB

Download
memory/2112-0-0x000007FEF5523000-0x000007FEF5524000-memory.dmp

Filesize
4KB

Download
memory/2176-69-0x0000000000080000-0x000000000009A000-memory.dmp

Filesize
104KB

Download
memory/2720-42-0x000000001B730000-0x000000001BA12000-memory.dmp

Filesize
2.9MB

Download
memory/2720-43-0x0000000001DE0000-0x0000000001DE8000-memory.dmp

Filesize
32KB

Download
memory/2772-36-0x0000000002910000-0x0000000002918000-memory.dmp

Filesize
32KB

Download
memory/2772-35-0x000000001B5A0000-0x000000001B882000-memory.dmp

Filesize
2.9MB

Download
memory/2912-66-0x0000000000300000-0x000000000031A000-memory.dmp

Filesize
104KB

Download
memory/3008-14-0x0000000000D30000-0x0000000000D4A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads