xenorat | b543df56136a5f5cab011ce1d88dd866aa47578c37bf5edab19db2c3d8c4e771

General

Target

serrteter.exe
Size

45KB
MD5

369a6ea15eb8ebde64fc1e043ad44382
SHA1

7f45dbf3268ec3bbfdd06c2086294b26d9beebac
SHA256

b543df56136a5f5cab011ce1d88dd866aa47578c37bf5edab19db2c3d8c4e771
SHA512

d88c224419abefae5da3ea3cb4b479c1bd1063a70ad3659d138886e194aca5a82e124e6dc74e108501fbbb0cdcd58c0bf9f8b53330e00a7bc74e978f1ac58533
SSDEEP

768:FdhO/poiiUcjlJInazH9Xqk5nWEZ5SbTDa+WI7CPW5N:bw+jjgnYH9XqcnW85SbTPWIF

Score

10^/10

xenorat discovery rat trojan

Malware Config

Extracted

Family

xenorat

C2

0.0.0.0

Mutex

Xeno_rat_nd8912d

Attributes

delay
1
install_path
appdata
port
8888
startup_name
Windows

Signatures

Detect XenoRat Payload 2 IoCs

resource	yara_rule
behavioral2/memory/4700-1-0x0000000000560000-0x0000000000572000-memory.dmp	family_xenorat
behavioral2/files/0x0007000000023cc0-6.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	serrteter.exe

Executes dropped EXE 1 IoCs

pid	Process
4888	serrteter.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	serrteter.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	serrteter.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
3992	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4700 wrote to memory of 4888	4700	serrteter.exe	85
PID 4700 wrote to memory of 4888	4700	serrteter.exe	85
PID 4700 wrote to memory of 4888	4700	serrteter.exe	85
PID 4888 wrote to memory of 3992	4888	serrteter.exe	86
PID 4888 wrote to memory of 3992	4888	serrteter.exe	86
PID 4888 wrote to memory of 3992	4888	serrteter.exe	86

C:\Users\Admin\AppData\Local\Temp\serrteter.exe
"C:\Users\Admin\AppData\Local\Temp\serrteter.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4700
- C:\Users\Admin\AppData\Roaming\XenoManager\serrteter.exe
  "C:\Users\Admin\AppData\Roaming\XenoManager\serrteter.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4888
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /Create /TN "Windows" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAB92.tmp" /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:3992

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

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

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\serrteter.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpAB92.tmp

Filesize
1KB

MD5
79b13ab7e7c490fbdcc8d5bacb4dd5b6

SHA1
2acf0c440abd9593318dfb9c155a517d24eb5e5b

SHA256
3764851eba7ab072cb22d8bd9a1723624a27fd164278f39bb94b966c433789fc

SHA512
7997a5a238daf7d519f103b3cdfdf3d67dfef13a1d49d6493dcd7086870429e34744034aaed6b090f563674af769329dc705de35d1f9c081f2b1afe3623efada

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

Filesize
45KB

MD5
369a6ea15eb8ebde64fc1e043ad44382

SHA1
7f45dbf3268ec3bbfdd06c2086294b26d9beebac

SHA256
b543df56136a5f5cab011ce1d88dd866aa47578c37bf5edab19db2c3d8c4e771

SHA512
d88c224419abefae5da3ea3cb4b479c1bd1063a70ad3659d138886e194aca5a82e124e6dc74e108501fbbb0cdcd58c0bf9f8b53330e00a7bc74e978f1ac58533

Download Submit
memory/4700-0-0x0000000074C7E000-0x0000000074C7F000-memory.dmp

Filesize
4KB

Download
memory/4700-1-0x0000000000560000-0x0000000000572000-memory.dmp

Filesize
72KB

Download
memory/4888-16-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4888-17-0x0000000074C70000-0x0000000075420000-memory.dmp

Filesize
7.7MB

Download
memory/4888-19-0x0000000074C70000-0x0000000075420000-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