xworm | fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e

General

Target

Xworm5.6.exe
Size

212KB
MD5

79a261a7ed31322af647ac3779479773
SHA1

e392f7feeb3ae0e5eb74deebdb0a983a0bb22be5
SHA256

fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e
SHA512

137b082fc232a5112eabc9f9d5c66cc8186f4b5047f0328cc427311d3afd526c3b893896c29ea548bfea20485cf8c09a0299bc71dd0b85a10efd162549c33179
SSDEEP

3072:mIl0bB95AOnVgk0A2ewhLapuvpAsZOyMqmyBeYVYA:/ubVhVnY/GWGwqqm1

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

java-either.gl.at.ply.gg:50133

Attributes

Install_directory
%AppData%
install_file
USB.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4728-1-0x0000000000900000-0x000000000093C000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023c9f-57.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
3876	powershell.exe
1152	powershell.exe
3112	powershell.exe
2212	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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Xworm5.6.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xworm.lnk	Xworm5.6.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Xworm.lnk	Xworm5.6.exe

Executes dropped EXE 2 IoCs

pid	Process
4784	Xworm
3912	Xworm

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-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Xworm = "C:\\Users\\Admin\\AppData\\Roaming\\Xworm"	Xworm5.6.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
19	ip-api.com

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
396	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3876	powershell.exe
3876	powershell.exe
1152	powershell.exe
1152	powershell.exe
3112	powershell.exe
3112	powershell.exe
2212	powershell.exe
2212	powershell.exe
4728	Xworm5.6.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	4728	Xworm5.6.exe
Token: SeDebugPrivilege	3876	powershell.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	3112	powershell.exe
Token: SeDebugPrivilege	2212	powershell.exe
Token: SeDebugPrivilege	4728	Xworm5.6.exe
Token: SeDebugPrivilege	4784	Xworm
Token: SeDebugPrivilege	3912	Xworm

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4728	Xworm5.6.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 3876	4728	Xworm5.6.exe	94
PID 4728 wrote to memory of 3876	4728	Xworm5.6.exe	94
PID 4728 wrote to memory of 1152	4728	Xworm5.6.exe	96
PID 4728 wrote to memory of 1152	4728	Xworm5.6.exe	96
PID 4728 wrote to memory of 3112	4728	Xworm5.6.exe	98
PID 4728 wrote to memory of 3112	4728	Xworm5.6.exe	98
PID 4728 wrote to memory of 2212	4728	Xworm5.6.exe	100
PID 4728 wrote to memory of 2212	4728	Xworm5.6.exe	100
PID 4728 wrote to memory of 396	4728	Xworm5.6.exe	102
PID 4728 wrote to memory of 396	4728	Xworm5.6.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\Xworm5.6.exe
"C:\Users\Admin\AppData\Local\Temp\Xworm5.6.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:4728
- 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\Xworm5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3876
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xworm5.6.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1152
- 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\Xworm'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3112
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Xworm'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2212
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Xworm" /tr "C:\Users\Admin\AppData\Roaming\Xworm"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:396

C:\Users\Admin\AppData\Roaming\Xworm
C:\Users\Admin\AppData\Roaming\Xworm
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4784

C:\Users\Admin\AppData\Roaming\Xworm
C:\Users\Admin\AppData\Roaming\Xworm
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3912

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\Xworm.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
2979eabc783eaca50de7be23dd4eafcf

SHA1
d709ce5f3a06b7958a67e20870bfd95b83cad2ea

SHA256
006cca90e78fbb571532a83082ac6712721a34ea4b21f490058ffb3f521f4903

SHA512
92bc433990572d9427d0c93eef9bd1cc23fa00ed60dd0c9c983d87d3421e02ce3f156c6f88fe916ef6782dbf185cbce083bc0094f8c527f302be6a37d1c53aba

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

Filesize
944B

MD5
2524e72b0573fa94e9cb8089728a4b47

SHA1
3d5c4dfd6e7632153e687ee866f8ecc70730a0f1

SHA256
fafde5bec1db5e838e0a43603714686f9911b7aaa8d8ff0fe40f9496a7b38747

SHA512
99a7593a82353f792a58ea99196330aaa8c34ac2f616f0be4b4ca4f76388485866ba96dc62d9b8e7627c1df6a1f74111342307ba82400adce5adac68b47a6fa8

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

Filesize
944B

MD5
22310ad6749d8cc38284aa616efcd100

SHA1
440ef4a0a53bfa7c83fe84326a1dff4326dcb515

SHA256
55b1d8021c4eb4c3c0d75e3ed7a4eb30cd0123e3d69f32eeb596fe4ffec05abf

SHA512
2ef08e2ee15bb86695fe0c10533014ffed76ececc6e579d299d3365fafb7627f53e32e600bb6d872b9f58aca94f8cb7e1e94cdfd14777527f7f0aa019d9c6def

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_w24a5mzd.pys.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
212KB

MD5
79a261a7ed31322af647ac3779479773

SHA1
e392f7feeb3ae0e5eb74deebdb0a983a0bb22be5

SHA256
fdc1271b3f571e656af8be8b944641592f2cb27b422756921fbfc6eeef55710e

SHA512
137b082fc232a5112eabc9f9d5c66cc8186f4b5047f0328cc427311d3afd526c3b893896c29ea548bfea20485cf8c09a0299bc71dd0b85a10efd162549c33179

Download Submit
memory/3876-14-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-15-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-18-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-13-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/3876-12-0x0000015FD3340000-0x0000015FD3362000-memory.dmp

Filesize
136KB

Download
memory/4728-0-0x00007FF8CE2F3000-0x00007FF8CE2F5000-memory.dmp

Filesize
8KB

Download
memory/4728-2-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4728-56-0x00007FF8CE2F0000-0x00007FF8CEDB1000-memory.dmp

Filesize
10.8MB

Download
memory/4728-1-0x0000000000900000-0x000000000093C000-memory.dmp

Filesize
240KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads