xworm | ddf376949bfba2dc3a3b96f71a4daa5509f1a9fd5b7e7cd76c0c26bb47519eb1

General

Target

8UU8B5W8VV.exe
Size

297KB
MD5

082976e714a0f693c0ecec066ebdecf7
SHA1

cfb7949744a86a9cb3b483adeed0774d1608c2a4
SHA256

ddf376949bfba2dc3a3b96f71a4daa5509f1a9fd5b7e7cd76c0c26bb47519eb1
SHA512

dae2da7ac35267a7cc7aa9b9a67adb7bdef12f8377913261bc5221d02a3959bbe97e43d99edcab312d62349f54bfc4682ad47f3586351de9d39a8fa9acd608d3
SSDEEP

6144:qPLuOE2FcpKJblg71etEk87aSDZ9K0B5zOchum8uVTGlx:6Li2FcpKLg71eeTaSDZ9Kq56cE

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

ensure-manual.gl.at.ply.gg:41199

Mutex

ZtTzf8WYbWwk3j1n

Attributes

Install_directory
%AppData%
install_file
dllhost.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/4468-2-0x00000000010B0000-0x00000000010C0000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

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-1-5-21-2319007114-3335580451-2147236418-1000\Control Panel\International\Geo\Nation	8UU8B5W8VV.exe

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dllhost.lnk	8UU8B5W8VV.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\dllhost.lnk	8UU8B5W8VV.exe

Executes dropped EXE 1 IoCs

pid	Process
1388	dllhost.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2319007114-3335580451-2147236418-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\8UU8B5W8VV.exe = "C:\\Users\\Admin\\AppData\\Roaming\\8UU8B5W8VV.exe"	8UU8B5W8VV.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2319007114-3335580451-2147236418-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\dllhost = "C:\\Users\\Admin\\AppData\\Roaming\\dllhost.exe"	8UU8B5W8VV.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 2 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
3820	schtasks.exe
3724	schtasks.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4468	8UU8B5W8VV.exe
Token: SeDebugPrivilege	1388	dllhost.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4468 wrote to memory of 3568	4468	8UU8B5W8VV.exe	81
PID 4468 wrote to memory of 3568	4468	8UU8B5W8VV.exe	81
PID 4468 wrote to memory of 3820	4468	8UU8B5W8VV.exe	83
PID 4468 wrote to memory of 3820	4468	8UU8B5W8VV.exe	83
PID 4468 wrote to memory of 3724	4468	8UU8B5W8VV.exe	91
PID 4468 wrote to memory of 3724	4468	8UU8B5W8VV.exe	91

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\8UU8B5W8VV.exe
"C:\Users\Admin\AppData\Local\Temp\8UU8B5W8VV.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4468
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Query /TN 8UU8B5W8VV
  2⤵
  PID:3568
- C:\Windows\SYSTEM32\schtasks.exe
  "schtasks.exe" /Create /SC ONLOGON /TN 8UU8B5W8VV /TR C:\Users\Admin\AppData\Roaming\8UU8B5W8VV.exe /RU INTERACTIVE /RL HIGHEST /F
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3820
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "dllhost" /tr "C:\Users\Admin\AppData\Roaming\dllhost.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:3724

C:\Users\Admin\AppData\Roaming\dllhost.exe
"C:\Users\Admin\AppData\Roaming\dllhost.exe"
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1388

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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\Roaming\dllhost.exe

Filesize
297KB

MD5
082976e714a0f693c0ecec066ebdecf7

SHA1
cfb7949744a86a9cb3b483adeed0774d1608c2a4

SHA256
ddf376949bfba2dc3a3b96f71a4daa5509f1a9fd5b7e7cd76c0c26bb47519eb1

SHA512
dae2da7ac35267a7cc7aa9b9a67adb7bdef12f8377913261bc5221d02a3959bbe97e43d99edcab312d62349f54bfc4682ad47f3586351de9d39a8fa9acd608d3

Download Submit
memory/4468-0-0x00007FFA0C563000-0x00007FFA0C565000-memory.dmp

Filesize
8KB

Download
memory/4468-1-0x00000000008B0000-0x0000000000900000-memory.dmp

Filesize
320KB

Download
memory/4468-2-0x00000000010B0000-0x00000000010C0000-memory.dmp

Filesize
64KB

Download
memory/4468-7-0x00007FFA0C560000-0x00007FFA0D022000-memory.dmp

Filesize
10.8MB

Download
memory/4468-8-0x00007FFA0C563000-0x00007FFA0C565000-memory.dmp

Filesize
8KB

Download
memory/4468-11-0x000000001B5B0000-0x000000001B5BC000-memory.dmp

Filesize
48KB

Download
memory/4468-13-0x00007FFA0C560000-0x00007FFA0D022000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads