xworm | e2430be4254080e2ad735e09c0e5fc83ebe2fc034662edcc898f6444bb6ec0d5

Analysis

max time kernel
93s
max time network
135s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
05-10-2024 18:57

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General

Target

RC7.exe
Size

809KB
MD5

8431fbda6408a7a2d8d954abb46d0012
SHA1

2f268b2a51379762b268f0b208ca48826e623f93
SHA256

befedb8dcf588b42acd2db96dc71d82df5da67821b0b3403098de3b77e345b33
SHA512

e25bf48f70bad66c48095514444f64717aea8c14228519e76a6d0280cef2458af513f68d26fc11bb4599e125acd9d88c8af0092cc20d11434b97b2de5e5fad64
SSDEEP

6144:gbK5rCbsIg2mvqvUOCbsIg2mvqvUzwvIJVLfsMT:DMbsIg2mCvUPbsIg2mCvUztVLfRT

Score

10^/10

xworm discovery rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:22612

bay-husband.gl.at.ply.gg:22612

Attributes

Install_directory
%ProgramData%
install_file
WebRuntime.exe

Signatures

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\Extracted\Temp.exe	family_xworm
behavioral8/memory/4320-23-0x0000000000520000-0x000000000053C000-memory.dmp	family_xworm

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

Processes:

RC7.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation RC7.exe
Executes dropped EXE 1 IoCs

Processes:

Temp.exe

pid process

4320 Temp.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.

Processes:

flow ioc

23 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
discovery

System Language Discovery
T1614.001

Processes:

RC7.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language RC7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	RC7.exe

pid	process
4320	Temp.exe

flow	ioc
23	ip-api.com

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RC7.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

RC7.exe

description	ioc	process
Set value (int)	\REGISTRY\USER\S-1-5-21-656926755-4116854191-210765258-1000\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\RC7.exe = "11001"	RC7.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

RC7.exeTemp.exe

description pid process

Token: SeDebugPrivilege 4952 RC7.exe
Token: SeDebugPrivilege 4320 Temp.exe
Suspicious use of WriteProcessMemory 2 IoCs

Processes:

RC7.exe

description pid process target process

PID 4952 wrote to memory of 4320 4952 RC7.exe Temp.exe
PID 4952 wrote to memory of 4320 4952 RC7.exe Temp.exe

description	pid	process
Token: SeDebugPrivilege	4952	RC7.exe
Token: SeDebugPrivilege	4320	Temp.exe

description	pid	process	target process
PID 4952 wrote to memory of 4320	4952	RC7.exe	Temp.exe
PID 4952 wrote to memory of 4320	4952	RC7.exe	Temp.exe

C:\Users\Admin\AppData\Local\Temp\RC7.exe
"C:\Users\Admin\AppData\Local\Temp\RC7.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Users\Admin\AppData\Local\Temp\Extracted\Temp.exe
  "C:\Users\Admin\AppData\Local\Temp\Extracted\Temp.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:4320

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Extracted\Temp.exe

Filesize
83KB

MD5
83d1ae21a7f05487cc5d62eb83ee9523

SHA1
a01e42cb77a9595d08804cea32fc0a69c8de60f5

SHA256
17d76f6c81180a48771a369e55e2331cbcde64c3101060cdaf1fd911ff6fc72a

SHA512
e9ed64c0c24f142f53064de85d11516a707378178c0688bb0eabd52af29d13b3315beead066512553b275433b56063f98fc67cda0e8ba40f7ef53c7b44f70389

Download Submit
memory/4320-29-0x000000001B2C0000-0x000000001B2D0000-memory.dmp

Filesize
64KB

Download
memory/4320-23-0x0000000000520000-0x000000000053C000-memory.dmp

Filesize
112KB

Download
memory/4320-22-0x00007FFF4AA43000-0x00007FFF4AA45000-memory.dmp

Filesize
8KB

Download
memory/4952-3-0x0000000006200000-0x00000000067A4000-memory.dmp

Filesize
5.6MB

Download
memory/4952-5-0x00000000748D0000-0x0000000075080000-memory.dmp

Filesize
7.7MB

Download
memory/4952-4-0x0000000005CF0000-0x0000000005D82000-memory.dmp

Filesize
584KB

Download
memory/4952-0-0x00000000748DE000-0x00000000748DF000-memory.dmp

Filesize
4KB

Download
memory/4952-2-0x0000000005830000-0x0000000005B4C000-memory.dmp

Filesize
3.1MB

Download
memory/4952-24-0x0000000007210000-0x000000000721A000-memory.dmp

Filesize
40KB

Download
memory/4952-25-0x0000000007220000-0x000000000722A000-memory.dmp

Filesize
40KB

Download
memory/4952-26-0x0000000005800000-0x0000000005810000-memory.dmp

Filesize
64KB

Download
memory/4952-28-0x00000000748D0000-0x0000000075080000-memory.dmp

Filesize
7.7MB

Download
memory/4952-1-0x0000000000A80000-0x0000000000B50000-memory.dmp

Filesize
832KB

Download