xworm | 573b2ca9df39dc24d7e769786b7fd1bcafda80c2b7404b919e92cbbc65db9baf

General

Target

quest mod installer.exe
Size

165KB
MD5

6b223bcb2346baac936dc94b8fbc0e80
SHA1

672fb1856a64c9d71d438e9beaf8094aeb65e4cb
SHA256

573b2ca9df39dc24d7e769786b7fd1bcafda80c2b7404b919e92cbbc65db9baf
SHA512

2c22c62be5490383f29ea1b9023dbffce9f0d9a36431bbbc494d29e041896758878f729539abc793e2ae5e3ef4b27666e50064b11a284a7ef9d27c2c57a77443
SSDEEP

3072:UvRZfiACBoHbT0/h5dOMpkMZ0Bz65/M6If+3Js+3JFkKeTnC:UvRZfiIbwhFHZ0xBt25

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

C2

127.0.0.1:53655

147.185.221.24::53655

147.185.221.24:53655

topics-properties.gl.at.ply.gg:53655

Attributes

Install_directory
%AppData%
install_file
XClient.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/memory/1264-1-0x00000000003D0000-0x0000000000400000-memory.dmp	family_xworm
behavioral2/files/0x000200000001e75d-9.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	quest mod installer.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
3184	XClient.exe
2588	XClient.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
13	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
3744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1264	quest mod installer.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	1264	quest mod installer.exe
Token: SeDebugPrivilege	1264	quest mod installer.exe
Token: SeDebugPrivilege	3184	XClient.exe
Token: SeDebugPrivilege	2588	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1264	quest mod installer.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1264 wrote to memory of 3744	1264	quest mod installer.exe	86
PID 1264 wrote to memory of 3744	1264	quest mod installer.exe	86

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\quest mod installer.exe
"C:\Users\Admin\AppData\Local\Temp\quest mod installer.exe"
1⤵
- Checks computer location settings
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1264
- 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:3744

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3184

C:\Users\Admin\AppData\Roaming\XClient.exe
C:\Users\Admin\AppData\Roaming\XClient.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2588

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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\XClient.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
165KB

MD5
6b223bcb2346baac936dc94b8fbc0e80

SHA1
672fb1856a64c9d71d438e9beaf8094aeb65e4cb

SHA256
573b2ca9df39dc24d7e769786b7fd1bcafda80c2b7404b919e92cbbc65db9baf

SHA512
2c22c62be5490383f29ea1b9023dbffce9f0d9a36431bbbc494d29e041896758878f729539abc793e2ae5e3ef4b27666e50064b11a284a7ef9d27c2c57a77443

Download Submit
memory/1264-0-0x00007FFA5DF43000-0x00007FFA5DF45000-memory.dmp

Filesize
8KB

Download
memory/1264-1-0x00000000003D0000-0x0000000000400000-memory.dmp

Filesize
192KB

Download
memory/1264-2-0x00007FFA5DF40000-0x00007FFA5EA01000-memory.dmp

Filesize
10.8MB

Download
memory/1264-7-0x00007FFA5DF43000-0x00007FFA5DF45000-memory.dmp

Filesize
8KB

Download
memory/1264-8-0x00007FFA5DF40000-0x00007FFA5EA01000-memory.dmp

Filesize
10.8MB

Download
memory/3184-11-0x00007FFA5DF40000-0x00007FFA5EA01000-memory.dmp

Filesize
10.8MB

Download
memory/3184-13-0x00007FFA5DF40000-0x00007FFA5EA01000-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