xenorat | 93d60d73b33815ffcfa599af4dde3a900bf3ed880d667b2029a6c791d6340810

Analysis

max time kernel
39s
max time network
44s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20241023-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20241023-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
28-11-2024 19:04

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General

Target

ByeFunV1Helper.exe
Size

61KB
MD5

4853487df85809a47fd28f81f60914e3
SHA1

efa5f925e0587a5282154def356c93ca6c56fac8
SHA256

93d60d73b33815ffcfa599af4dde3a900bf3ed880d667b2029a6c791d6340810
SHA512

84afd14836ac592548e35f9c03eaabcce22a0d18e3ad596be99f3924e094856d9733fb3e2844bc629ba9dedcdcf22c14d77b2527de475a95d788f6ee2678623d
SSDEEP

1536:Bw+jjgnNH9XqcnW85SbTiuIyLJ+/oOyc:Bw+jqV91UbTiIN+Afc

Score

10^/10

xenorat discovery rat trojan

Malware Config

Extracted

Family

xenorat

10.9.30.162

Mutex

ByeFunV1Helper

Attributes

delay
5000
install_path
appdata
port
4872
startup_name
BYEFUNHELPERINJECTED

Signatures

Detect XenoRat Payload 2 IoCs

resource	yara_rule
behavioral1/memory/2724-1-0x0000000000F30000-0x0000000000F46000-memory.dmp	family_xenorat
behavioral1/files/0x002900000004505f-2.dat	family_xenorat

XenorRat
XenorRat is a remote access trojan written in C#.
trojan rat xenorat
Xenorat family
xenorat

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-1-5-21-4074627901-37362009-3519777259-1000\Control Panel\International\Geo\Nation	ByeFunV1Helper.exe

Executes dropped EXE 1 IoCs

pid	Process
4360	ByeFunV1Helper.exe

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 3 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	ByeFunV1Helper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ByeFunV1Helper.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

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
4236	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2724 wrote to memory of 4360	2724	ByeFunV1Helper.exe	81
PID 2724 wrote to memory of 4360	2724	ByeFunV1Helper.exe	81
PID 2724 wrote to memory of 4360	2724	ByeFunV1Helper.exe	81
PID 4360 wrote to memory of 4236	4360	ByeFunV1Helper.exe	86
PID 4360 wrote to memory of 4236	4360	ByeFunV1Helper.exe	86
PID 4360 wrote to memory of 4236	4360	ByeFunV1Helper.exe	86

C:\Users\Admin\AppData\Local\Temp\ByeFunV1Helper.exe
"C:\Users\Admin\AppData\Local\Temp\ByeFunV1Helper.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2724
- C:\Users\Admin\AppData\Roaming\XenoManager\ByeFunV1Helper.exe
  "C:\Users\Admin\AppData\Roaming\XenoManager\ByeFunV1Helper.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4360
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /Create /TN "BYEFUNHELPERINJECTED" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8A1F.tmp" /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

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\Microsoft\CLR_v4.0_32\UsageLogs\ByeFunV1Helper.exe.log

Filesize
226B

MD5
66aea5e724c4a224d092067c3381783b

SHA1
ee3cc64c4370a255391bdfeef2883d5b7a6e6230

SHA256
04b17cab961f973464bba8924f764edef6451d1774f2405d27ef33d164296923

SHA512
5d719e303f491d1443cb7c7e8946481e90532522a422c98f82466e1eddcd1ef24a4505dcbf75f2191fbb66825d3550566d7f408a3854edeb4c1a192c8c9a6d06

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp8A1F.tmp

Filesize
1KB

MD5
bb70f1cba24f68d4cb6eacd5d6035625

SHA1
c8705627c78eabd594a31042b9db58fd3bd115b7

SHA256
0a71ff9931e7ad8cd696b9b77405702708996905e0e050a178d321779484d54a

SHA512
ea16a159d812c4c5f4b9030e54ca0079bec35b8b6872166c0eb945aa526f244f52b6de673cb8c4b8c496b471df247065f5abaa701ad5991a13faf8c60e268ff6

Download Submit
C:\Users\Admin\AppData\Roaming\XenoManager\ByeFunV1Helper.exe

Filesize
61KB

MD5
4853487df85809a47fd28f81f60914e3

SHA1
efa5f925e0587a5282154def356c93ca6c56fac8

SHA256
93d60d73b33815ffcfa599af4dde3a900bf3ed880d667b2029a6c791d6340810

SHA512
84afd14836ac592548e35f9c03eaabcce22a0d18e3ad596be99f3924e094856d9733fb3e2844bc629ba9dedcdcf22c14d77b2527de475a95d788f6ee2678623d

Download Submit
memory/2724-0-0x0000000074EBE000-0x0000000074EBF000-memory.dmp

Filesize
4KB

Download
memory/2724-1-0x0000000000F30000-0x0000000000F46000-memory.dmp

Filesize
88KB

Download
memory/4360-5-0x0000000074EB0000-0x0000000075661000-memory.dmp

Filesize
7.7MB

Download
memory/4360-8-0x0000000074EB0000-0x0000000075661000-memory.dmp

Filesize
7.7MB

Download
memory/4360-9-0x0000000074EB0000-0x0000000075661000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads