xworm | e2430be4254080e2ad735e09c0e5fc83ebe2fc034662edcc898f6444bb6ec0d5

Analysis

max time kernel
30s
max time network
142s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
05-10-2024 18:51

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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
%AppData%
install_file
WebRuntime.exe

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral4/files/0x000100000002abc0-12.dat	family_xworm
behavioral4/memory/2856-23-0x0000000000DE0000-0x0000000000DF6000-memory.dmp	family_xworm

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

Executes dropped EXE 1 IoCs

pid	Process
2856	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.

flow	ioc
3	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

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

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-6179872-1886041298-1573312864-1000\Software\Microsoft\Internet Explorer\Main\FeatureControl\FEATURE_BROWSER_EMULATION\RC7.exe = "11001"	RC7.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	RC7.exe
Token: SeDebugPrivilege	2856	Temp.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 2856	1640	RC7.exe	78
PID 1640 wrote to memory of 2856	1640	RC7.exe	78

C:\Users\Admin\AppData\Local\Temp\RC7.exe
"C:\Users\Admin\AppData\Local\Temp\RC7.exe"
1⤵
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- 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:2856

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
66KB

MD5
57d1cfd1a2f8d248c6e18c903127452a

SHA1
746dc1af18c021dd5c9f8446155f75b891381f37

SHA256
4fd418e12de833bd0bfc5ec23ebbe5f37e12f0e40b96613a53ba013221f1915b

SHA512
8aef885aec60c0f6bb0b9df9f3ddb194e39e0afc025f46767272b711bf0aeac1e186ee47fd70b07ce575e9feca88f38157ac2c92f7de3c80532845921165ec36

Download Submit
memory/1640-3-0x0000000006160000-0x0000000006706000-memory.dmp

Filesize
5.6MB

Download
memory/1640-2-0x00000000056C0000-0x00000000059DC000-memory.dmp

Filesize
3.1MB

Download
memory/1640-0-0x00000000742EE000-0x00000000742EF000-memory.dmp

Filesize
4KB

Download
memory/1640-4-0x00000000059E0000-0x0000000005A72000-memory.dmp

Filesize
584KB

Download
memory/1640-5-0x00000000742E0000-0x0000000074A91000-memory.dmp

Filesize
7.7MB

Download
memory/1640-1-0x00000000006D0000-0x00000000007A0000-memory.dmp

Filesize
832KB

Download
memory/1640-24-0x0000000006DD0000-0x0000000006DDA000-memory.dmp

Filesize
40KB

Download
memory/1640-25-0x0000000006DE0000-0x0000000006DEA000-memory.dmp

Filesize
40KB

Download
memory/1640-26-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

Filesize
64KB

Download
memory/1640-29-0x00000000742E0000-0x0000000074A91000-memory.dmp

Filesize
7.7MB

Download
memory/2856-22-0x00007FFDAEE53000-0x00007FFDAEE55000-memory.dmp

Filesize
8KB

Download
memory/2856-23-0x0000000000DE0000-0x0000000000DF6000-memory.dmp

Filesize
88KB

Download
memory/2856-28-0x000000001BCF0000-0x000000001BD00000-memory.dmp

Filesize
64KB

Download