xenorat | 3a27cbf28bf377fdaf2ede53ce2c4df68bc2a69de9a97912fc2bb836e643a95f | Triage

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
11-05-2024 16:02

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General

Target

stzb.exe
Size

45KB
MD5

d699990c3a4490c11c156fec8add57d7
SHA1

27227c08812566529e4a36d00655a25343fed2c0
SHA256

3a27cbf28bf377fdaf2ede53ce2c4df68bc2a69de9a97912fc2bb836e643a95f
SHA512

7fdb8064bd9ff20318da59967b1b8068eac047729baabdf19ce99145fd647a546eb57a9e02d22166afc4d839476932dbb8b54305e0026140a1de6ef834620b65
SSDEEP

768:EdhO/poiiUcjlJInNHqH9Xqk5nWEZ5SbTDasWI7CPW5Q:ew+jjgnEH9XqcnW85SbTFWI4

Score

10^/10

xenorat rat trojan

Malware Config

Extracted

Family

xenorat

C2

ayumi-42243.portmap.host

Mutex

Xeno_rat_nd8912d

Attributes

delay
1000
install_path
appdata
port
42243
startup_name
asdf

Signatures

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

System Information Discovery

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation	stzb.exe

Executes dropped EXE 1 IoCs

pid	Process
1076	stzb.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task/Job

pid	Process
1680	schtasks.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4356 wrote to memory of 1076	4356	stzb.exe	84
PID 4356 wrote to memory of 1076	4356	stzb.exe	84
PID 4356 wrote to memory of 1076	4356	stzb.exe	84
PID 1076 wrote to memory of 1680	1076	stzb.exe	86
PID 1076 wrote to memory of 1680	1076	stzb.exe	86
PID 1076 wrote to memory of 1680	1076	stzb.exe	86

C:\Users\Admin\AppData\Local\Temp\stzb.exe
"C:\Users\Admin\AppData\Local\Temp\stzb.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4356
- C:\Users\Admin\AppData\Roaming\XenoManager\stzb.exe
  "C:\Users\Admin\AppData\Roaming\XenoManager\stzb.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:1076
- - C:\Windows\SysWOW64\schtasks.exe
    "schtasks.exe" /Create /TN "asdf" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4F78.tmp" /F
    3⤵
    - Creates scheduled task(s)
    PID:1680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Persistence

Scheduled Task/Job

Privilege Escalation

Scheduled Task/Job

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\stzb.exe.log

Filesize
226B

MD5
916851e072fbabc4796d8916c5131092

SHA1
d48a602229a690c512d5fdaf4c8d77547a88e7a2

SHA256
7e750c904c43d27c89e55af809a679a96c0bb63fc511006ffbceffc2c7f6fb7d

SHA512
07ce4c881d6c411cac0b62364377e77950797c486804fb10d00555458716e3c47b1efc0d1f37e4cc3b7e6565bb402ca01c7ea8c963f9f9ace941a6e3883d2521

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4F78.tmp

Filesize
1KB

MD5
cd09efc4be2e9bcf7f87fe2202d1c2e7

SHA1
c3770bd132cc03c398018039f957c3299be702c2

SHA256
1986597741adca1243849a0622133bf3bb87460b7c10d714ceb0ee3c11a15931

SHA512
c8b27a0e2d8a211577fd1fb739346af733e24cccd1fe59b76e8ea47c737a7c3a0820a763806234d74ffda57f2a4fc3158ea5f9e097779c6bfa4e93455d6804ab

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

Filesize
45KB

MD5
d699990c3a4490c11c156fec8add57d7

SHA1
27227c08812566529e4a36d00655a25343fed2c0

SHA256
3a27cbf28bf377fdaf2ede53ce2c4df68bc2a69de9a97912fc2bb836e643a95f

SHA512
7fdb8064bd9ff20318da59967b1b8068eac047729baabdf19ce99145fd647a546eb57a9e02d22166afc4d839476932dbb8b54305e0026140a1de6ef834620b65

Download Submit
memory/1076-15-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/1076-18-0x00000000753B0000-0x0000000075B60000-memory.dmp

Filesize
7.7MB

Download
memory/4356-0-0x00000000753BE000-0x00000000753BF000-memory.dmp

Filesize
4KB

Download
memory/4356-1-0x0000000000DE0000-0x0000000000DF2000-memory.dmp

Filesize
72KB

Download