xworm | f5397c537fc606330bde4041b772c48e32170215def2a147a2c9f514c594aeab

General

Target

Terraria.exe
Size

60KB
MD5

26431ec9a1a79dabe8a67b64c005942e
SHA1

4f97b1ab1cec347bb27e6d49c791ca064c915c1f
SHA256

f5397c537fc606330bde4041b772c48e32170215def2a147a2c9f514c594aeab
SHA512

c95e03b07499b7cdd15e323d67b7a81bc1eb11cd6c6670a0d9a627cf119e4cc173f8ba2e00e65bb50cdf7d34316a54ab8d4ebb880eb7f9a71197dfe13678697a
SSDEEP

1536:Ke92V1xhC29ycp5+GvlYqibRmfF6uCOSJXfO38v:Ke92VM2cWwGvNibRvOSJfOsv

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

add-enlarge.gl.at.ply.gg:14520

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/928-0-0x00000000002F0000-0x0000000000306000-memory.dmp	family_xworm
behavioral2/files/0x000f00000002335e-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
4152	powershell.exe
1160	powershell.exe
2396	powershell.exe
5020	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-1-5-21-711569230-3659488422-571408806-1000\Control Panel\International\Geo\Nation	Terraria.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2728	svchost.exe
4824	svchost.exe
1148	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-1-5-21-711569230-3659488422-571408806-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	Terraria.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
15	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
4068	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
4152	powershell.exe
4152	powershell.exe
1160	powershell.exe
1160	powershell.exe
2396	powershell.exe
2396	powershell.exe
5020	powershell.exe
5020	powershell.exe
928	Terraria.exe

Suspicious use of AdjustPrivilegeToken 9 IoCs

description	pid	Process
Token: SeDebugPrivilege	928	Terraria.exe
Token: SeDebugPrivilege	4152	powershell.exe
Token: SeDebugPrivilege	1160	powershell.exe
Token: SeDebugPrivilege	2396	powershell.exe
Token: SeDebugPrivilege	5020	powershell.exe
Token: SeDebugPrivilege	928	Terraria.exe
Token: SeDebugPrivilege	2728	svchost.exe
Token: SeDebugPrivilege	4824	svchost.exe
Token: SeDebugPrivilege	1148	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
928	Terraria.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 928 wrote to memory of 4152	928	Terraria.exe	90
PID 928 wrote to memory of 4152	928	Terraria.exe	90
PID 928 wrote to memory of 1160	928	Terraria.exe	93
PID 928 wrote to memory of 1160	928	Terraria.exe	93
PID 928 wrote to memory of 2396	928	Terraria.exe	95
PID 928 wrote to memory of 2396	928	Terraria.exe	95
PID 928 wrote to memory of 5020	928	Terraria.exe	97
PID 928 wrote to memory of 5020	928	Terraria.exe	97
PID 928 wrote to memory of 4068	928	Terraria.exe	99
PID 928 wrote to memory of 4068	928	Terraria.exe	99

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\Terraria.exe
"C:\Users\Admin\AppData\Local\Temp\Terraria.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:928
- 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\Terraria.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:4152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Terraria.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1160
- 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:2396
- 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:5020
- 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⤵
  - Creates scheduled task(s)
  PID:4068

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2728

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4824

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1148

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

Scheduled Task/Job

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

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

Replay Monitor

Loading Replay Monitor...

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
2e907f77659a6601fcc408274894da2e

SHA1
9f5b72abef1cd7145bf37547cdb1b9254b4efe9d

SHA256
385da35673330e21ac02545220552fe301fe54dedefbdafc097ac4342a295233

SHA512
34fa0fff24f6550f55f828541aaefe5d75c86f8f0842d54b50065e9746f9662bb7209c74c9a9571540b9855bb3851f01db613190024e89b198d485bb5dc07721

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

Filesize
944B

MD5
e2efbfd23e33d8d07d019bdd9ca20649

SHA1
68d3b285c423d311bdf8dc53354f5f4000caf386

SHA256
f4386e3a103dafd6e85bebc2ad649069d168b4da8a0ded51b3ec96fa1408a828

SHA512
b7a961002557ff2efb785f756c9347e250392eab3dcb5168c67e89238e85368a41d0a5bdc94bfbbc192ba427c83e982234b3cf8824b166a69973f3f9df177443

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

Filesize
944B

MD5
f41f42c322498af0591f396c59dd4304

SHA1
e1e5aa68d73d48bc5e743a34f6c0fa8960ff7514

SHA256
d8bd9a4a363ff2ac2dc887759ec6ba4215a4ce0925a8fb9c531573458ee4a31c

SHA512
2328a1b402b4fb0de9c451fb630eab58549129d3bcfb70b9834cfbd16065ebaadec006b309ea17ac182d34c53e01705cbc9e0196eb0cbd62600c866e79a1844f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_rel1akbw.yxg.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
60KB

MD5
26431ec9a1a79dabe8a67b64c005942e

SHA1
4f97b1ab1cec347bb27e6d49c791ca064c915c1f

SHA256
f5397c537fc606330bde4041b772c48e32170215def2a147a2c9f514c594aeab

SHA512
c95e03b07499b7cdd15e323d67b7a81bc1eb11cd6c6670a0d9a627cf119e4cc173f8ba2e00e65bb50cdf7d34316a54ab8d4ebb880eb7f9a71197dfe13678697a

Download Submit
memory/928-0-0x00000000002F0000-0x0000000000306000-memory.dmp

Filesize
88KB

Download
memory/928-2-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download
memory/928-1-0x00007FFAE48B3000-0x00007FFAE48B5000-memory.dmp

Filesize
8KB

Download
memory/928-60-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download
memory/4152-4-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download
memory/4152-18-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download
memory/4152-6-0x000001D8F6850000-0x000001D8F6872000-memory.dmp

Filesize
136KB

Download
memory/4152-5-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download
memory/4152-3-0x00007FFAE48B0000-0x00007FFAE5371000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads