xenorat | 76c45fabe4e4438e1d9d434e9cd104219fc7e855b90bafaf52b70c069a495b65

General

Target

test.exe
Size

163KB
MD5

4531671a39dfdd4a9711e64400f7f0fa
SHA1

55357cd9c957105f9b5af04f1a8e65101229ae4a
SHA256

76c45fabe4e4438e1d9d434e9cd104219fc7e855b90bafaf52b70c069a495b65
SHA512

d35d54d6986dfbe22fcac76792853cacdc1c4b0eecba5cd7703c3b1f50005d42b8e36ccc6a8c5a4928d2c49413896e11779f4e23357b7229b0863511f5ab3f52
SSDEEP

3072:O6kZB/A8p+F3sh+3NB/fXdBcRDmGCKX+Ip4rI4gei6+SRaBwV0BfI6Ks2:hkZB/A8p+F2+3b/fXdKcLKXhG84geVoP

Score

10^/10

xenorat discovery rat trojan

Malware Config

Extracted

Family

xenorat

C2

10.160.192.195

Mutex

Attributes

delay
5000
install_path
appdata
port
13579
startup_name
Windows CL

Signatures

Detect XenoRat Payload 2 IoCs

resource	yara_rule
behavioral1/files/0x000800000001650a-6.dat	family_xenorat
behavioral1/memory/2028-10-0x0000000000800000-0x0000000000812000-memory.dmp	family_xenorat

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

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\test.exe	test.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\test.exe	test.exe

Executes dropped EXE 1 IoCs

pid	Process
2028	tempfile

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	tempfile
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AcroRd32.exe

Modifies registry class 7 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_Classes\Local Settings	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command	rundll32.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-312935884-697965778-3955649944-1000_CLASSES\_auto_file\shell\Read\command\ = "\"C:\\Program Files (x86)\\Adobe\\Reader 9.0\\Reader\\AcroRd32.exe\" \"%1\""	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2740	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2740	AcroRd32.exe
2740	AcroRd32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2160 wrote to memory of 2028	2160	test.exe	32
PID 2160 wrote to memory of 2028	2160	test.exe	32
PID 2160 wrote to memory of 2028	2160	test.exe	32
PID 2160 wrote to memory of 2028	2160	test.exe	32
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2028 wrote to memory of 2748	2028	tempfile	33
PID 2748 wrote to memory of 2740	2748	rundll32.exe	34
PID 2748 wrote to memory of 2740	2748	rundll32.exe	34
PID 2748 wrote to memory of 2740	2748	rundll32.exe	34
PID 2748 wrote to memory of 2740	2748	rundll32.exe	34

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Drops startup file
- Suspicious use of WriteProcessMemory
PID:2160
- C:\Users\Admin\AppData\Local\Temp\tempfile
  "C:\Users\Admin\AppData\Local\Temp\tempfile"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2028
- - C:\Windows\SysWOW64\rundll32.exe
    "C:\Windows\system32\rundll32.exe" C:\Windows\system32\shell32.dll,OpenAs_RunDLL C:\Users\Admin\AppData\Roaming\XenoManager\tempfile
    3⤵
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:2748
  - - C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
      "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\Users\Admin\AppData\Roaming\XenoManager\tempfile"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: GetForegroundWindowSpam
      Suspicious use of SetWindowsHookEx
      PID:2740

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\tempfile

Filesize
45KB

MD5
2be6e608f41c752b6d4d00ee65d3a4dd

SHA1
19d4f38a8c86f29b1fdd43dfbd98c3ad3192ceff

SHA256
481de496a0d953c431a161f7929cabb72817c48d287951e85b76fb1e50529a60

SHA512
b725d3f02658b2033f75e7dc364118c865ce6a48b07acba80e4be54083f09dad6d42d68fd186010b21ce92c3118f9150787d40900b5443f990c6caf6a1d9bd8d

Download Submit
C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
8ce50473d0aaafb81d220ce2d6d0529a

SHA1
49adefb48da3f80fe92b4f1783720b8ae8453614

SHA256
21cdff0a47cfe7f7e9f0f23e90af0654cbd11c995933a69fff296f623ae30799

SHA512
76423eb6974a5f8a32bc448c4043b1689228276520ad05fc829b9a77c9fa1967abf3afbda6f30738dc7744d8f8a62621888134b5e69e538f33411f064d4e08bd

Download Submit
memory/2028-9-0x000000007403E000-0x000000007403F000-memory.dmp

Filesize
4KB

Download
memory/2028-10-0x0000000000800000-0x0000000000812000-memory.dmp

Filesize
72KB

Download
memory/2160-0-0x000007FEF52B3000-0x000007FEF52B4000-memory.dmp

Filesize
4KB

Download
memory/2160-1-0x0000000000D90000-0x0000000000DC0000-memory.dmp

Filesize
192KB

Download
memory/2160-8-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download
memory/2160-13-0x000007FEF52B0000-0x000007FEF5C9C000-memory.dmp

Filesize
9.9MB

Download

Analysis

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