xworm | 8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69

Analysis

max time kernel
150s
max time network
135s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
18/11/2024, 16:30

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General

Target

8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe
Size

867KB
MD5

bed3b5ce30d2d279d91945bf705477bc
SHA1

75c2cdb2cb3f9632aa1d6ec42a4ee5a5a995198f
SHA256

8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69
SHA512

87415c6be1238aa20dfcadadd17f63e7651f552292e36f32ed8e29e36346433346b29447db75eb935316692b95d85e7b0e8b22d1f8997485a67e997e29f36b79
SSDEEP

12288:i98NVBjvwSRz04lj4k/GG6yY5adl8M64mzx8B/wmtilK6yEbx9H:vV9vT5lj4MGdyY5SWv4mM/eyErH

Score

10^/10

xworm discovery execution rat trojan

Malware Config

Extracted

Family

xworm

45.84.199.152:7000

Attributes

Install_directory
%Public%
install_file
Msedge.exe

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012280-2.dat	family_xworm
behavioral1/memory/2992-4-0x00000000001C0000-0x00000000001F8000-memory.dmp	family_xworm
behavioral1/memory/1352-35-0x0000000000C10000-0x0000000000C48000-memory.dmp	family_xworm
behavioral1/memory/568-38-0x0000000001130000-0x0000000001168000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
2596	powershell.exe
2020	powershell.exe
1048	powershell.exe
2440	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 3 IoCs

pid	Process
2992	msedge.exe
1352	Msedge.exe
568	Msedge.exe

Looks up external IP address via web service 1 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

flow	ioc
10	ip-api.com

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\msedge.exe	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe

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

System Information Discovery
T1082

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2504	cmd.exe
1040	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
2120	taskkill.exe
2332	taskkill.exe
2560	taskkill.exe
320	taskkill.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
1768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2440	powershell.exe
2596	powershell.exe
2020	powershell.exe
1048	powershell.exe
2992	msedge.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	2120	taskkill.exe
Token: SeDebugPrivilege	2332	taskkill.exe
Token: SeDebugPrivilege	2560	taskkill.exe
Token: SeDebugPrivilege	320	taskkill.exe
Token: SeDebugPrivilege	2992	msedge.exe
Token: SeDebugPrivilege	2440	powershell.exe
Token: SeDebugPrivilege	2596	powershell.exe
Token: SeDebugPrivilege	2020	powershell.exe
Token: SeDebugPrivilege	1048	powershell.exe
Token: SeDebugPrivilege	2992	msedge.exe
Token: SeDebugPrivilege	1352	Msedge.exe
Token: SeDebugPrivilege	568	Msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2992	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3032 wrote to memory of 2336	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	31
PID 3032 wrote to memory of 2336	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	31
PID 3032 wrote to memory of 2336	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	31
PID 2336 wrote to memory of 2120	2336	cmd.exe	32
PID 2336 wrote to memory of 2120	2336	cmd.exe	32
PID 2336 wrote to memory of 2120	2336	cmd.exe	32
PID 3032 wrote to memory of 2504	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	34
PID 3032 wrote to memory of 2504	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	34
PID 3032 wrote to memory of 2504	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	34
PID 2504 wrote to memory of 2332	2504	cmd.exe	35
PID 2504 wrote to memory of 2332	2504	cmd.exe	35
PID 2504 wrote to memory of 2332	2504	cmd.exe	35
PID 3032 wrote to memory of 1040	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	36
PID 3032 wrote to memory of 1040	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	36
PID 3032 wrote to memory of 1040	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	36
PID 1040 wrote to memory of 2560	1040	cmd.exe	37
PID 1040 wrote to memory of 2560	1040	cmd.exe	37
PID 1040 wrote to memory of 2560	1040	cmd.exe	37
PID 3032 wrote to memory of 1796	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	38
PID 3032 wrote to memory of 1796	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	38
PID 3032 wrote to memory of 1796	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	38
PID 1796 wrote to memory of 320	1796	cmd.exe	39
PID 1796 wrote to memory of 320	1796	cmd.exe	39
PID 1796 wrote to memory of 320	1796	cmd.exe	39
PID 3032 wrote to memory of 2964	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	40
PID 3032 wrote to memory of 2964	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	40
PID 3032 wrote to memory of 2964	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	40
PID 3032 wrote to memory of 2976	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	41
PID 3032 wrote to memory of 2976	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	41
PID 3032 wrote to memory of 2976	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	41
PID 2976 wrote to memory of 2992	2976	cmd.exe	42
PID 2976 wrote to memory of 2992	2976	cmd.exe	42
PID 2976 wrote to memory of 2992	2976	cmd.exe	42
PID 3032 wrote to memory of 2968	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	43
PID 3032 wrote to memory of 2968	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	43
PID 3032 wrote to memory of 2968	3032	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	43
PID 2968 wrote to memory of 2816	2968	cmd.exe	44
PID 2968 wrote to memory of 2816	2968	cmd.exe	44
PID 2968 wrote to memory of 2816	2968	cmd.exe	44
PID 2968 wrote to memory of 2296	2968	cmd.exe	45
PID 2968 wrote to memory of 2296	2968	cmd.exe	45
PID 2968 wrote to memory of 2296	2968	cmd.exe	45
PID 2968 wrote to memory of 2960	2968	cmd.exe	46
PID 2968 wrote to memory of 2960	2968	cmd.exe	46
PID 2968 wrote to memory of 2960	2968	cmd.exe	46
PID 2992 wrote to memory of 2440	2992	msedge.exe	48
PID 2992 wrote to memory of 2440	2992	msedge.exe	48
PID 2992 wrote to memory of 2440	2992	msedge.exe	48
PID 2992 wrote to memory of 2596	2992	msedge.exe	50
PID 2992 wrote to memory of 2596	2992	msedge.exe	50
PID 2992 wrote to memory of 2596	2992	msedge.exe	50
PID 2992 wrote to memory of 2020	2992	msedge.exe	52
PID 2992 wrote to memory of 2020	2992	msedge.exe	52
PID 2992 wrote to memory of 2020	2992	msedge.exe	52
PID 2992 wrote to memory of 1048	2992	msedge.exe	54
PID 2992 wrote to memory of 1048	2992	msedge.exe	54
PID 2992 wrote to memory of 1048	2992	msedge.exe	54
PID 2992 wrote to memory of 1768	2992	msedge.exe	56
PID 2992 wrote to memory of 1768	2992	msedge.exe	56
PID 2992 wrote to memory of 1768	2992	msedge.exe	56
PID 1544 wrote to memory of 1352	1544	taskeng.exe	59
PID 1544 wrote to memory of 1352	1544	taskeng.exe	59
PID 1544 wrote to memory of 1352	1544	taskeng.exe	59
PID 1544 wrote to memory of 568	1544	taskeng.exe	60

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe
"C:\Users\Admin\AppData\Local\Temp\8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3032
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM EpicGamesLauncher.exe /F
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2336
- - C:\Windows\system32\taskkill.exe
    taskkill /IM EpicGamesLauncher.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2120
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM FortniteClient-Win64-Shipping_BE.exe /F
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:2504
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping_BE.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2332
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM FortniteClient-Win64-Shipping.exe /F
  2⤵
  - System Network Configuration Discovery: Internet Connection Discovery
  - Suspicious use of WriteProcessMemory
  PID:1040
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2560
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM x64dbg.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1796
- - C:\Windows\system32\taskkill.exe
    taskkill /IM x64dbg.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:320
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2964
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\msedge.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2976
- - C:\Windows\msedge.exe
    C:\Windows\msedge.exe
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2992
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Windows\msedge.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2440
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'msedge.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2596
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Public\Msedge.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:2020
  - - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Msedge.exe'
      4⤵
      Command and Scripting Interpreter: PowerShell
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1048
  - - C:\Windows\System32\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "Msedge" /tr "C:\Users\Public\Msedge.exe"
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1768
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2968
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe" MD5
    3⤵
    PID:2816
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2296
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:2960

C:\Windows\system32\taskeng.exe
taskeng.exe {E448C98F-A7EC-4D40-AD5B-659F38C410F1} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1544
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1352
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:568

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Network Configuration Discovery

T1016

Internet Connection Discovery

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
4e40e418b614b8b0ecc3e0949f99e7a8

SHA1
f71cc43697d461ee5b407582201a47f9501c71d7

SHA256
188c48ca55ba6955b366a333bd6d9d6955cd4abd3aa1658f804409adfaef225c

SHA512
6907181a40ed44bde09a8037319d19a5336071e6cf4c116559e56ec3d6952f719d00c0f2a5453aec80956082040d04a969a1ca14e33d7a9fe1e48c79cd0558fb

Download Submit
C:\Windows\msedge.exe

Filesize
204KB

MD5
4738e3496a3efe5f19c57b764eb5ba9b

SHA1
da9163944b1f51438b2602cbc95660af43172065

SHA256
cb51764f19e66bb6accd7f0418332bac7759073ed245f0633dddd53f68e81933

SHA512
4cb3029e136471edf2ebb46d1e4fc3a70e5138a5bd4b3fb182b6746d00c69fd5cf8822c0c90c2bcb4d8276db0cecac16ea0198e18a44e755a340495b19cc2238

Download Submit
memory/568-38-0x0000000001130000-0x0000000001168000-memory.dmp

Filesize
224KB

Download
memory/1352-35-0x0000000000C10000-0x0000000000C48000-memory.dmp

Filesize
224KB

Download
memory/2440-9-0x000000001B5C0000-0x000000001B8A2000-memory.dmp

Filesize
2.9MB

Download
memory/2440-10-0x0000000001E10000-0x0000000001E18000-memory.dmp

Filesize
32KB

Download
memory/2596-16-0x000000001B540000-0x000000001B822000-memory.dmp

Filesize
2.9MB

Download
memory/2596-17-0x0000000002810000-0x0000000002818000-memory.dmp

Filesize
32KB

Download
memory/2992-4-0x00000000001C0000-0x00000000001F8000-memory.dmp

Filesize
224KB

Download