xenorat | be045cf8976030dc7200bedb119e053213e575af26e5e5b92a1a4f51e2f96b4e

General

Target
Nitro.exe
Size 45KB
Sample240914-2t99ka1fpl
SHA256 be045cf8976030dc7200bedb119e053213e575af26e5e5b92a1a4f51e2f96b4e
MD5 7ff205ae30f13c7fac35957f21a12174
SHA1 10a776f49aa65cc8b2d02404689a9b535585aba0
SHA512 8d4fcda66dbb1090c2b14677598f6280f2531e054510c2dde99c45a3d4e9181c1827ed192401d6fa4753bbb06b678d6c1f437b7bbaaef32b0759817db8ed5408
SSDEEP 768:1dhO/poiiUcjlJInzXSeH9Xqk5nWEZ5SbTDadWI7CPW5+:Lw+jjgnrH9XqcnW85SbTcWI2
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

xenorat discovery rat trojan

Malware Config

Extracted

Family

xenorat

C2

148.0.169.121

Mutex

Nitro

Attributes

delay
5000
install_path
temp
port
4444
startup_name
Nitro

Signatures

Detect XenoRat Payload 2 IoCs

resource	yara_rule
behavioral2/memory/3240-1-0x00000000002E0000-0x00000000002F2000-memory.dmp	family_xenorat
behavioral2/files/0x00070000000234bd-6.dat	family_xenorat

XenorRat
XenorRat is a remote access trojan written in C#.
trojan rat 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-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	Nitro.exe

Executes dropped EXE 1 IoCs

pid	Process
1008	Nitro.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	Nitro.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Nitro.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
2152	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3240 wrote to memory of 1008	3240	Nitro.exe	86
PID 3240 wrote to memory of 1008	3240	Nitro.exe	86
PID 3240 wrote to memory of 1008	3240	Nitro.exe	86
PID 1008 wrote to memory of 2152	1008	Nitro.exe	92
PID 1008 wrote to memory of 2152	1008	Nitro.exe	92
PID 1008 wrote to memory of 2152	1008	Nitro.exe	92

C:\Users\Admin\AppData\Local\Temp\Nitro.exe
"C:\Users\Admin\AppData\Local\Temp\Nitro.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3240
- C:\Users\Admin\AppData\Local\Temp\XenoManager\Nitro.exe
  "C:\Users\Admin\AppData\Local\Temp\XenoManager\Nitro.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1008
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /Create /TN "Nitro" /XML "C:\Users\Admin\AppData\Local\Temp\tmp9EC0.tmp" /F
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2152

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

Nitro.exe.log

Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Nitro.exe.log
Size 226B
SHA256 7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d
MD5 916851e072fbabc4796d8916c5131092
SHA1 d48a602229a690c512d5fdaf4c8d77547a88e7a2
SHA512 07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521
MD5 SHA1 SHA512

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Nitro.exe

Path C:\Users\Admin\AppData\Local\Temp\XenoManager\Nitro.exe
Size 45KB
SHA256 be045cf8976030dc7200bedb119e053213e575af26e5e5b92a1a4f51e2f96b4e
MD5 7ff205ae30f13c7fac35957f21a12174
SHA1 10a776f49aa65cc8b2d02404689a9b535585aba0
SHA512 8d4fcda66dbb1090c2b14677598f6280f2531e054510c2dde99c45a3d4e9181c1827ed192401d6fa4753bbb06b678d6c1f437b7bbaaef32b0759817db8ed5408
SSDEEP 768:1dhO/poiiUcjlJInzXSeH9Xqk5nWEZ5SbTDadWI7CPW5+:Lw+jjgnrH9XqcnW85SbTcWI2
MD5 SHA1 SHA512 SSDEEP

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tmp9EC0.tmp

Path C:\Users\Admin\AppData\Local\Temp\tmp9EC0.tmp
Size 1KB
SHA256 4c66a47aa57a8014b7a18da47b7b1e269fb9b65cb655c4207052795c2834c42f
MD5 f292f0812e8b5cea420ad7fb063bc968
SHA1 e33b7761603aac46807a31d85be6126ef294c794
SHA512 4e897bae204f48be3d523e84b1b0aa9b18c93b51f96311be57da2e758f2a463ee92bbac568fd120a37f52ef65822d111d421647f5ab82fc46ee4c462676377cf
MD5 SHA1 SHA512

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memory/1008-15-0x0000000074430000-0x0000000074BE0000-memory.dmp

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memory/1008-18-0x0000000074430000-0x0000000074BE0000-memory.dmp

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memory/1008-19-0x0000000074430000-0x0000000074BE0000-memory.dmp

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memory/3240-0-0x000000007443E000-0x000000007443F000-memory.dmp

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memory/3240-1-0x00000000002E0000-0x00000000002F2000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads