xworm | 7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035

General

Target

RobloxFlingV4.exe
Size

77KB
MD5

a3d8c1ce63a239eda1c0958acd5f106f
SHA1

d9b5899773d4250cfa80605bb3524a01aad462b8
SHA256

7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035
SHA512

cddeaab7f3441aeaf19cdd5cd9560f42b8e6e95752584b7faa868728fb442becfb069eaade6d69c64eefcd20922f6800c136cebdd2d896fa1add896325c908ef
SSDEEP

1536:entZ0f9nRQFt8jo2r6+RRoXPGLyTsrG96HIU+bml4cfP61Ak8OvdUCUVB:669nRQFt8jNs/vTf+IU+bmo18OF1OB

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

success-olympus.gl.at.ply.gg:36156

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/memory/2328-1-0x0000000000C20000-0x0000000000C3A000-memory.dmp	family_xworm
behavioral1/files/0x0009000000012119-35.dat	family_xworm
behavioral1/memory/2864-37-0x0000000000340000-0x000000000035A000-memory.dmp	family_xworm
behavioral1/memory/3032-40-0x0000000000110000-0x000000000012A000-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
1884	powershell.exe
804	powershell.exe
2768	powershell.exe
2636	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	RobloxFlingV4.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.lnk	RobloxFlingV4.exe

Executes dropped EXE 2 IoCs

pid	Process
2864	svchost
3032	svchost

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-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost"	RobloxFlingV4.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
2628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1884	powershell.exe
804	powershell.exe
2768	powershell.exe
2636	powershell.exe
2328	RobloxFlingV4.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	RobloxFlingV4.exe
Token: SeDebugPrivilege	1884	powershell.exe
Token: SeDebugPrivilege	804	powershell.exe
Token: SeDebugPrivilege	2768	powershell.exe
Token: SeDebugPrivilege	2636	powershell.exe
Token: SeDebugPrivilege	2328	RobloxFlingV4.exe
Token: SeDebugPrivilege	2864	svchost
Token: SeDebugPrivilege	3032	svchost

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2328	RobloxFlingV4.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 1884	2328	RobloxFlingV4.exe	31
PID 2328 wrote to memory of 1884	2328	RobloxFlingV4.exe	31
PID 2328 wrote to memory of 1884	2328	RobloxFlingV4.exe	31
PID 2328 wrote to memory of 804	2328	RobloxFlingV4.exe	33
PID 2328 wrote to memory of 804	2328	RobloxFlingV4.exe	33
PID 2328 wrote to memory of 804	2328	RobloxFlingV4.exe	33
PID 2328 wrote to memory of 2768	2328	RobloxFlingV4.exe	35
PID 2328 wrote to memory of 2768	2328	RobloxFlingV4.exe	35
PID 2328 wrote to memory of 2768	2328	RobloxFlingV4.exe	35
PID 2328 wrote to memory of 2636	2328	RobloxFlingV4.exe	37
PID 2328 wrote to memory of 2636	2328	RobloxFlingV4.exe	37
PID 2328 wrote to memory of 2636	2328	RobloxFlingV4.exe	37
PID 2328 wrote to memory of 2628	2328	RobloxFlingV4.exe	39
PID 2328 wrote to memory of 2628	2328	RobloxFlingV4.exe	39
PID 2328 wrote to memory of 2628	2328	RobloxFlingV4.exe	39
PID 1196 wrote to memory of 2864	1196	taskeng.exe	42
PID 1196 wrote to memory of 2864	1196	taskeng.exe	42
PID 1196 wrote to memory of 2864	1196	taskeng.exe	42
PID 1196 wrote to memory of 3032	1196	taskeng.exe	44
PID 1196 wrote to memory of 3032	1196	taskeng.exe	44
PID 1196 wrote to memory of 3032	1196	taskeng.exe	44

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\RobloxFlingV4.exe
"C:\Users\Admin\AppData\Local\Temp\RobloxFlingV4.exe"
1⤵
- 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:2328
- 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\RobloxFlingV4.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1884
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'RobloxFlingV4.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:804
- 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'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2636
- 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"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2628

C:\Windows\system32\taskeng.exe
taskeng.exe {34A7E915-2EB5-4157-816E-7D9D044829D1} S-1-5-21-1846800975-3917212583-2893086201-1000:ZQABOPWE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Roaming\svchost
  C:\Users\Admin\AppData\Roaming\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2864
- C:\Users\Admin\AppData\Roaming\svchost
  C:\Users\Admin\AppData\Roaming\svchost
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3032

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
6a4644060db922c58376c2dac6ab33c6

SHA1
fc685853d24c3ac8454fc23481c5110605bcb143

SHA256
a68fd444298805fec2acced41623453bdaa14c99564253fee451d2feffa768a9

SHA512
2d45452c0d4066ad793dae54297d9f1e2598c106cf4fc4eb275e7b19202662cc49cc8811417e09acc030e1e66a58a925d58f4e6cee227e087eba5183fe018a92

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

Filesize
77KB

MD5
a3d8c1ce63a239eda1c0958acd5f106f

SHA1
d9b5899773d4250cfa80605bb3524a01aad462b8

SHA256
7b24d9dc380ea21160d1e5f753b4992cdc1c8ebf8071cf87f31ec7a7be55c035

SHA512
cddeaab7f3441aeaf19cdd5cd9560f42b8e6e95752584b7faa868728fb442becfb069eaade6d69c64eefcd20922f6800c136cebdd2d896fa1add896325c908ef

Download Submit
memory/804-15-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/804-14-0x000000001B690000-0x000000001B972000-memory.dmp

Filesize
2.9MB

Download
memory/1884-7-0x000000001B740000-0x000000001BA22000-memory.dmp

Filesize
2.9MB

Download
memory/1884-8-0x0000000001E70000-0x0000000001E78000-memory.dmp

Filesize
32KB

Download
memory/1884-6-0x0000000002C70000-0x0000000002CF0000-memory.dmp

Filesize
512KB

Download
memory/2328-0-0x000007FEF6313000-0x000007FEF6314000-memory.dmp

Filesize
4KB

Download
memory/2328-31-0x000000001B210000-0x000000001B290000-memory.dmp

Filesize
512KB

Download
memory/2328-32-0x000007FEF6313000-0x000007FEF6314000-memory.dmp

Filesize
4KB

Download
memory/2328-33-0x000000001B210000-0x000000001B290000-memory.dmp

Filesize
512KB

Download
memory/2328-1-0x0000000000C20000-0x0000000000C3A000-memory.dmp

Filesize
104KB

Download
memory/2864-37-0x0000000000340000-0x000000000035A000-memory.dmp

Filesize
104KB

Download
memory/3032-40-0x0000000000110000-0x000000000012A000-memory.dmp

Filesize
104KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads