xworm | 34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45

General

Target

XClient.exe
Size

68KB
MD5

68604d1b2200493d620fbb9e70c3b182
SHA1

dbffc3b9a4935f31120bd623849175c3072f748e
SHA256

34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45
SHA512

1f3f15895dc2b9ac282554d99ea7a7daa44ecd7c0c655c84851200c95b51e1a4688b4690f94a75343b1cbfa838f1aa3e975f4da329782e71436a9a8000d4e19d
SSDEEP

1536:6RgdNcKAE/LQXYd4AnLv5DKA7VHg4kbzmWZf/kxTYSbFcAzOthYV:6wyoEXW4alxBkbzVapFbFrzOtCV

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:57562

kind-lap.gl.at.ply.gg:57562

Attributes

Install_directory
%AppData%
install_file
svchost.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3556-1-0x0000000000810000-0x0000000000828000-memory.dmp	family_xworm
behavioral2/files/0x000b000000023b61-10.dat	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	XClient.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
4888	svchost.exe
784	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-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\svchost = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	XClient.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
2592	schtasks.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3556	XClient.exe
Token: SeDebugPrivilege	3556	XClient.exe
Token: SeDebugPrivilege	4888	svchost.exe
Token: SeDebugPrivilege	784	svchost.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 3556 wrote to memory of 2592	3556	XClient.exe	84
PID 3556 wrote to memory of 2592	3556	XClient.exe	84

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\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3556
- 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⤵
  - Scheduled Task/Job: Scheduled Task
  PID:2592

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4888

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:784

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\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\Roaming\svchost.exe

Filesize
68KB

MD5
68604d1b2200493d620fbb9e70c3b182

SHA1
dbffc3b9a4935f31120bd623849175c3072f748e

SHA256
34e19eff1a2abfbcec9af157d91af7c502ec0f5cce0b58bb49b7a4c7a23d6f45

SHA512
1f3f15895dc2b9ac282554d99ea7a7daa44ecd7c0c655c84851200c95b51e1a4688b4690f94a75343b1cbfa838f1aa3e975f4da329782e71436a9a8000d4e19d

Download Submit
memory/3556-0-0x00007FFCD54B3000-0x00007FFCD54B5000-memory.dmp

Filesize
8KB

Download
memory/3556-1-0x0000000000810000-0x0000000000828000-memory.dmp

Filesize
96KB

Download
memory/3556-6-0x00007FFCD54B0000-0x00007FFCD5F71000-memory.dmp

Filesize
10.8MB

Download
memory/3556-7-0x00007FFCD54B3000-0x00007FFCD54B5000-memory.dmp

Filesize
8KB

Download
memory/3556-8-0x00007FFCD54B0000-0x00007FFCD5F71000-memory.dmp

Filesize
10.8MB

Download
memory/3556-9-0x000000001C160000-0x000000001C16C000-memory.dmp

Filesize
48KB

Download
memory/4888-12-0x00007FFCD54B0000-0x00007FFCD5F71000-memory.dmp

Filesize
10.8MB

Download
memory/4888-14-0x00007FFCD54B0000-0x00007FFCD5F71000-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