xworm | 585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815

Analysis

max time kernel
129s
max time network
148s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
11-01-2024 11:35

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General

Target

msfiler.exe
Size

419KB
MD5

8a716466aa6f2d425ec09770626e8e54
SHA1

62fb757ea5098651331f91c1664db9fe46b21879
SHA256

585d1fb4f288974b683c5abfb10c97d7d2ae3f59c2bcfd78ba272e3be2cd7815
SHA512

54f11067e400347834689b4532ae53b00ec96a3ca90a2c21de27942f4ca30306fdda0522c1a3a4cde047ad650162e2d8313205220acaab4cc60e010965690940
SSDEEP

6144:QTCsE3O4yuS5O0RBOInaCa6G6ypdf4Bf7e/DnjBeq04fVXOUvE0CGsSE9BLM:2E3O5uOO0mInnGZCTS84fZLtw

Score

10^/10

xworm rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

5.182.87.154:7000

Mutex

VMFidhoqn75fm5lJ

Attributes

Install_directory
%Temp%
install_file
mdnsresp.exe

aes.plain

Signatures

Detect Xworm Payload 6 IoCs

resource	yara_rule
behavioral1/memory/2864-10-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-9-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-13-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-17-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2864-15-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm
behavioral1/memory/2736-25-0x0000000001DB0000-0x0000000001DF0000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm

Drops startup file 2 IoCs

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

Loads dropped DLL 1 IoCs

pid	Process
2864	msfiler.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 536 set thread context of 2864	536	msfiler.exe	30

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

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
2736	powershell.exe
2640	powershell.exe
2948	powershell.exe
752	powershell.exe
2172	powershell.exe
2864	msfiler.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

description	pid	Process
Token: SeDebugPrivilege	536	msfiler.exe
Token: SeDebugPrivilege	2864	msfiler.exe
Token: SeDebugPrivilege	2736	powershell.exe
Token: SeDebugPrivilege	2640	powershell.exe
Token: SeDebugPrivilege	2948	powershell.exe
Token: SeDebugPrivilege	752	powershell.exe
Token: SeDebugPrivilege	2172	powershell.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2864	msfiler.exe

Suspicious use of WriteProcessMemory 29 IoCs

description	pid	Process	procid_target
PID 536 wrote to memory of 2736	536	msfiler.exe	28
PID 536 wrote to memory of 2736	536	msfiler.exe	28
PID 536 wrote to memory of 2736	536	msfiler.exe	28
PID 536 wrote to memory of 2736	536	msfiler.exe	28
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 536 wrote to memory of 2864	536	msfiler.exe	30
PID 2864 wrote to memory of 2640	2864	msfiler.exe	32
PID 2864 wrote to memory of 2640	2864	msfiler.exe	32
PID 2864 wrote to memory of 2640	2864	msfiler.exe	32
PID 2864 wrote to memory of 2640	2864	msfiler.exe	32
PID 2864 wrote to memory of 2948	2864	msfiler.exe	34
PID 2864 wrote to memory of 2948	2864	msfiler.exe	34
PID 2864 wrote to memory of 2948	2864	msfiler.exe	34
PID 2864 wrote to memory of 2948	2864	msfiler.exe	34
PID 2864 wrote to memory of 752	2864	msfiler.exe	36
PID 2864 wrote to memory of 752	2864	msfiler.exe	36
PID 2864 wrote to memory of 752	2864	msfiler.exe	36
PID 2864 wrote to memory of 752	2864	msfiler.exe	36
PID 2864 wrote to memory of 2172	2864	msfiler.exe	37
PID 2864 wrote to memory of 2172	2864	msfiler.exe	37
PID 2864 wrote to memory of 2172	2864	msfiler.exe	37
PID 2864 wrote to memory of 2172	2864	msfiler.exe	37

C:\Users\Admin\AppData\Local\Temp\msfiler.exe
"C:\Users\Admin\AppData\Local\Temp\msfiler.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:536
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc QQBkAGQALQBNAHAAUAByAGUAZgBlAHIAZQBuAGMAZQAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEMAOgBcAFUAcwBlAHIAcwBcAEEAZABtAGkAbgBcAEEAcABwAEQAYQB0AGEAXABMAG8AYwBhAGwAXABUAGUAbQBwAFwAbQBzAGYAaQBsAGUAcgAuAGUAeABlADsAIABBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAALQBFAHgAYwBsAHUAcwBpAG8AbgBQAHIAbwBjAGUAcwBzACAAbQBzAGYAaQBsAGUAcgAuAGUAeABlADsA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2736
- C:\Users\Admin\AppData\Local\Temp\msfiler.exe
  C:\Users\Admin\AppData\Local\Temp\msfiler.exe
  2⤵
  - Drops startup file
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:2864
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\msfiler.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2640
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msfiler.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2948
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:752
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'mdnsresp.exe'
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2172

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

Filesize
7KB

MD5
529ceb853a543c021a423ebe4efbc89d

SHA1
eae154750e42d8c8e5a30991ad66ee43eedc02b5

SHA256
59bf519527a0995b0cda47434fef97803917a4fa6ac94cdb9171bc872bf7920e

SHA512
b862ba61dec087f8b324048507c0365117ca85e79bfd1b192b50deebbdbeee4be75d4fccd5bb867e70db3b125151bf48d476bc7f512fb6a8aac5cbf36824dbd6

Download Submit
\Users\Admin\AppData\Local\Temp\mdnsresp.exe

Filesize
234KB

MD5
fa2f5b70ae3d3c4b9dfec81467ea06ea

SHA1
f9e11ae2fd6e5454322568728119e7741409768c

SHA256
4664064ae88131fd4e92a5454d08dd4ee9d293895f468ba2ac633a6aceb1f6c2

SHA512
ea55b98d25edbc464d6045b5c14ee95a9f2376153a7a3b982a80c9b15368d3f5213e43d304f742155690a71fc5b723403e2e26728f624e4f17628518326a740b

Download Submit
memory/536-18-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/536-1-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/536-2-0x00000000046A0000-0x00000000046E0000-memory.dmp

Filesize
256KB

Download
memory/536-3-0x00000000006F0000-0x0000000000738000-memory.dmp

Filesize
288KB

Download
memory/536-4-0x00000000005E0000-0x0000000000610000-memory.dmp

Filesize
192KB

Download
memory/536-5-0x0000000000790000-0x00000000007C0000-memory.dmp

Filesize
192KB

Download
memory/536-6-0x0000000004610000-0x000000000465C000-memory.dmp

Filesize
304KB

Download
memory/536-0-0x0000000000270000-0x00000000002E0000-memory.dmp

Filesize
448KB

Download
memory/752-62-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/752-57-0x00000000027E0000-0x0000000002820000-memory.dmp

Filesize
256KB

Download
memory/752-59-0x00000000027E0000-0x0000000002820000-memory.dmp

Filesize
256KB

Download
memory/752-60-0x00000000027E0000-0x0000000002820000-memory.dmp

Filesize
256KB

Download
memory/752-58-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/752-56-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2172-70-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2172-69-0x00000000024E0000-0x0000000002520000-memory.dmp

Filesize
256KB

Download
memory/2172-68-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2172-71-0x00000000024E0000-0x0000000002520000-memory.dmp

Filesize
256KB

Download
memory/2172-72-0x00000000024E0000-0x0000000002520000-memory.dmp

Filesize
256KB

Download
memory/2172-73-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2640-35-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2640-39-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2640-34-0x0000000002410000-0x0000000002450000-memory.dmp

Filesize
256KB

Download
memory/2640-33-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2640-38-0x0000000002410000-0x0000000002450000-memory.dmp

Filesize
256KB

Download
memory/2640-36-0x00000000708E0000-0x0000000070E8B000-memory.dmp

Filesize
5.7MB

Download
memory/2640-37-0x0000000002410000-0x0000000002450000-memory.dmp

Filesize
256KB

Download
memory/2736-24-0x0000000001DB0000-0x0000000001DF0000-memory.dmp

Filesize
256KB

Download
memory/2736-27-0x00000000713A0000-0x000000007194B000-memory.dmp

Filesize
5.7MB

Download
memory/2736-26-0x0000000001DB0000-0x0000000001DF0000-memory.dmp

Filesize
256KB

Download
memory/2736-22-0x00000000713A0000-0x000000007194B000-memory.dmp

Filesize
5.7MB

Download
memory/2736-23-0x00000000713A0000-0x000000007194B000-memory.dmp

Filesize
5.7MB

Download
memory/2736-25-0x0000000001DB0000-0x0000000001DF0000-memory.dmp

Filesize
256KB

Download
memory/2864-15-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-9-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-80-0x0000000004110000-0x0000000004150000-memory.dmp

Filesize
256KB

Download
memory/2864-79-0x0000000004110000-0x0000000004150000-memory.dmp

Filesize
256KB

Download
memory/2864-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-11-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2864-7-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-61-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2864-8-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-19-0x0000000074D10000-0x00000000753FE000-memory.dmp

Filesize
6.9MB

Download
memory/2864-13-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2864-17-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2948-45-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2948-50-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2948-46-0x0000000002160000-0x00000000021A0000-memory.dmp

Filesize
256KB

Download
memory/2948-47-0x0000000070330000-0x00000000708DB000-memory.dmp

Filesize
5.7MB

Download
memory/2948-48-0x0000000002160000-0x00000000021A0000-memory.dmp

Filesize
256KB

Download
memory/2948-49-0x0000000002160000-0x00000000021A0000-memory.dmp

Filesize
256KB

Download