xworm | fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728

General

Target

fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe
Size

52KB
MD5

57ce7a327782d47f5a95f5f73548d200
SHA1

1df4b4a4ed70605a7fede98f8c7e1b80042ef73e
SHA256

fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728
SHA512

1aaa25fc2a18ce8087c3c37bd9097d3e78910324f9992085690fed471f3a00bcd74b249f332bc7824361499e8dc27aa676421f4d82d0be04246703f3e2cae41e
SSDEEP

1536:cpHDSBc87/UWF70l/Crbi/OZu71Omwkn2OBCy:cYW8rHF70l/Ybi/HOt+fT

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:8848

u-football.gl.at.ply.gg:8848

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 3 IoCs

resource	yara_rule
behavioral1/memory/1104-1-0x00000000010C0000-0x00000000010D4000-memory.dmp	family_xworm
behavioral1/files/0x0015000000005587-10.dat	family_xworm
behavioral1/memory/2852-12-0x0000000000E40000-0x0000000000E54000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\XClient.lnk	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe

Executes dropped EXE 2 IoCs

pid	Process
2852	XClient.exe
2948	XClient.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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\XClient = "C:\\Users\\Admin\\AppData\\Roaming\\XClient.exe"	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.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
4	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
2800	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1104	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe
Token: SeDebugPrivilege	1104	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe
Token: SeDebugPrivilege	2852	XClient.exe
Token: SeDebugPrivilege	2948	XClient.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1104 wrote to memory of 2800	1104	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe	32
PID 1104 wrote to memory of 2800	1104	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe	32
PID 1104 wrote to memory of 2800	1104	fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe	32
PID 2620 wrote to memory of 2852	2620	taskeng.exe	35
PID 2620 wrote to memory of 2852	2620	taskeng.exe	35
PID 2620 wrote to memory of 2852	2620	taskeng.exe	35
PID 2620 wrote to memory of 2948	2620	taskeng.exe	36
PID 2620 wrote to memory of 2948	2620	taskeng.exe	36
PID 2620 wrote to memory of 2948	2620	taskeng.exe	36

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\fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe
"C:\Users\Admin\AppData\Local\Temp\fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728N.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1104
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "XClient" /tr "C:\Users\Admin\AppData\Roaming\XClient.exe"
  2⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2800

C:\Windows\system32\taskeng.exe
taskeng.exe {CE1279EB-5548-412F-A6D1-AA8A4101F3FB} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2620
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2852
- C:\Users\Admin\AppData\Roaming\XClient.exe
  C:\Users\Admin\AppData\Roaming\XClient.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2948

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

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\XClient.exe

Filesize
52KB

MD5
57ce7a327782d47f5a95f5f73548d200

SHA1
1df4b4a4ed70605a7fede98f8c7e1b80042ef73e

SHA256
fd9d1dfc1cf359603277712f179a5616503dd8ef4616149782873cf87fbff728

SHA512
1aaa25fc2a18ce8087c3c37bd9097d3e78910324f9992085690fed471f3a00bcd74b249f332bc7824361499e8dc27aa676421f4d82d0be04246703f3e2cae41e

Download Submit
memory/1104-0-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

Filesize
4KB

Download
memory/1104-1-0x00000000010C0000-0x00000000010D4000-memory.dmp

Filesize
80KB

Download
memory/1104-2-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/1104-7-0x000007FEF5833000-0x000007FEF5834000-memory.dmp

Filesize
4KB

Download
memory/1104-8-0x000007FEF5830000-0x000007FEF621C000-memory.dmp

Filesize
9.9MB

Download
memory/2852-12-0x0000000000E40000-0x0000000000E54000-memory.dmp

Filesize
80KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads