xworm | afe8adbd892f2c77a1cb9f8dc096ddbced00d80a96c427c384d6e3377ee7ac79

Analysis

max time kernel
146s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
09/06/2024, 14:52

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
VisualC++.exe
Size 38KB
Sample240609-r89apscd53
SHA256 afe8adbd892f2c77a1cb9f8dc096ddbced00d80a96c427c384d6e3377ee7ac79
MD5 ccf5611055e2534d41517afa19af6831
SHA1 29c3f3457922d209434678289a2e574c9975a4b9
SHA512 7cdef22ba8f9447b86c9f4026ff33f39ec837efe7f66a0f88b10e3615535f3b392858e3152560ac12c9bcec3c401da0b064005828538b602e2c59c05c748ec87
SSDEEP 768:yypWCI+GtIgSimoTsn/SXFyw9BHIFG6rO/h3PyYnlt:yypWQGtIgHu/EFr91IFG6rO/lZlt
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

addition-proxy.gl.at.ply.gg:2272

Mutex

alPkNQSy79I7nWvh

Attributes

Install_directory
%LocalAppData%
install_file
svchost.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4268-1-0x0000000000650000-0x0000000000660000-memory.dmp	family_xworm
behavioral2/files/0x000c0000000233e1-57.dat	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat 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
3412	powershell.exe
4856	powershell.exe
2964	powershell.exe
2428	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-1-5-21-2539840389-1261165778-1087677076-1000\Control Panel\International\Geo\Nation	VisualC++.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3684	svchost.exe
5056	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-1-5-21-2539840389-1261165778-1087677076-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Local\\svchost.exe"	VisualC++.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
7	ip-api.com

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

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
3268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3412	powershell.exe
3412	powershell.exe
4856	powershell.exe
4856	powershell.exe
2964	powershell.exe
2964	powershell.exe
2428	powershell.exe
2428	powershell.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4268	VisualC++.exe
Token: SeDebugPrivilege	3412	powershell.exe
Token: SeDebugPrivilege	4856	powershell.exe
Token: SeDebugPrivilege	2964	powershell.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	4268	VisualC++.exe
Token: SeDebugPrivilege	3684	svchost.exe
Token: SeDebugPrivilege	5056	svchost.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4268 wrote to memory of 3412	4268	VisualC++.exe	82
PID 4268 wrote to memory of 3412	4268	VisualC++.exe	82
PID 4268 wrote to memory of 4856	4268	VisualC++.exe	84
PID 4268 wrote to memory of 4856	4268	VisualC++.exe	84
PID 4268 wrote to memory of 2964	4268	VisualC++.exe	86
PID 4268 wrote to memory of 2964	4268	VisualC++.exe	86
PID 4268 wrote to memory of 2428	4268	VisualC++.exe	88
PID 4268 wrote to memory of 2428	4268	VisualC++.exe	88
PID 4268 wrote to memory of 3268	4268	VisualC++.exe	92
PID 4268 wrote to memory of 3268	4268	VisualC++.exe	92

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\VisualC++.exe
"C:\Users\Admin\AppData\Local\Temp\VisualC++.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4268
- 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\VisualC++.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3412
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'VisualC++.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4856
- 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\svchost.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2964
- 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:2428
- 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\Local\svchost.exe"
  2⤵
  - Creates scheduled task(s)
  PID:3268

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3684

C:\Users\Admin\AppData\Local\svchost.exe
C:\Users\Admin\AppData\Local\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5056

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

powershell.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
Size 2KB
SHA256 84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f
MD5 d85ba6ff808d9e5444a4b369f5bc2730
SHA1 31aa9d96590fff6981b315e0b391b575e4c0804a
SHA512 8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249
MD5 SHA1 SHA512

Submit Download

svchost.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\svchost.exe.log
Size 654B
SHA256 e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced
MD5 2ff39f6c7249774be85fd60a8f9a245e
SHA1 684ff36b31aedc1e587c8496c02722c6698c1c4e
SHA512 1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 e27addfbd9b37ec25f271297f7457be01e21b149ee679778b51d6eb7efd416de
MD5 b23515fc1ed808926fac7e74ea896dd1
SHA1 e2239483b0c394d70b32bf79125f587aac8a1588
SHA512 eeffd17aa8bad99c6cfb81105f1c185bcaba7f4976917a9f2ecd923f7836c08cd4751070a93f3375803f147a6db2380a3d04ab1858bcedcbedf4a112ad5c50d1
MD5 SHA1 SHA512

Submit Download

StartupProfileData-NonInteractive

Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Size 944B
SHA256 5ef1421e19fde4bc03cd825dd7d6c0e7863f85fd8f0aa4a4d4f8d555dc7606d1
MD5 ba169f4dcbbf147fe78ef0061a95e83b
SHA1 92a571a6eef49fff666e0f62a3545bcd1cdcda67
SHA512 8d2e5e552210dcda684682538bc964fdd8a8ff5b24cc2cc8af813729f0202191f98eb42d38d2355df17ae620fe401aad6ceaedaed3b112fdacd32485a3a0c07c
MD5 SHA1 SHA512

Submit Download

__PSScriptPolicyTest_ewvr2g3c.k1w.ps1

Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_ewvr2g3c.k1w.ps1
Size 60B
SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
MD5 d17fe0a3f47be24a6453e9ef58c94641
SHA1 6ab83620379fc69f80c0242105ddffd7d98d5d9d
SHA512 5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82
MD5 SHA1 SHA512

Submit Download

svchost.exe

Path C:\Users\Admin\AppData\Local\svchost.exe
Size 38KB
SHA256 afe8adbd892f2c77a1cb9f8dc096ddbced00d80a96c427c384d6e3377ee7ac79
MD5 ccf5611055e2534d41517afa19af6831
SHA1 29c3f3457922d209434678289a2e574c9975a4b9
SHA512 7cdef22ba8f9447b86c9f4026ff33f39ec837efe7f66a0f88b10e3615535f3b392858e3152560ac12c9bcec3c401da0b064005828538b602e2c59c05c748ec87
SSDEEP 768:yypWCI+GtIgSimoTsn/SXFyw9BHIFG6rO/h3PyYnlt:yypWQGtIgHu/EFr91IFG6rO/lZlt
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/3412-3-0x00007FFC3E9F0000-0x00007FFC3F4B1000-memory.dmp

Download

memory/3412-17-0x00007FFC3E9F0000-0x00007FFC3F4B1000-memory.dmp

Download

memory/3412-8-0x000001917FD70000-0x000001917FD92000-memory.dmp

Download

memory/3412-4-0x00007FFC3E9F0000-0x00007FFC3F4B1000-memory.dmp

Download

memory/4268-0-0x00007FFC3E9F3000-0x00007FFC3E9F5000-memory.dmp

Download

memory/4268-56-0x00007FFC3E9F0000-0x00007FFC3F4B1000-memory.dmp

Download

memory/4268-2-0x00007FFC3E9F0000-0x00007FFC3F4B1000-memory.dmp

Download

memory/4268-1-0x0000000000650000-0x0000000000660000-memory.dmp

Download