xworm | 8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-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 2 IoCs

resource	yara_rule
behavioral2/files/0x000c000000023b1f-2.dat	family_xworm
behavioral2/memory/2636-4-0x00000000002A0000-0x00000000002D8000-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
3560	powershell.exe
4468	powershell.exe
1728	powershell.exe
1344	powershell.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	msedge.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
2636	msedge.exe
4408	Msedge.exe
3852	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
22	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
3876	cmd.exe
804	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
380	taskkill.exe
4968	taskkill.exe
2812	taskkill.exe
3480	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
3628	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3560	powershell.exe
3560	powershell.exe
4468	powershell.exe
4468	powershell.exe
1728	powershell.exe
1728	powershell.exe
1344	powershell.exe
1344	powershell.exe
2636	msedge.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	380	taskkill.exe
Token: SeDebugPrivilege	4968	taskkill.exe
Token: SeDebugPrivilege	2812	taskkill.exe
Token: SeDebugPrivilege	3480	taskkill.exe
Token: SeDebugPrivilege	2636	msedge.exe
Token: SeDebugPrivilege	3560	powershell.exe
Token: SeDebugPrivilege	4468	powershell.exe
Token: SeDebugPrivilege	1728	powershell.exe
Token: SeDebugPrivilege	1344	powershell.exe
Token: SeDebugPrivilege	2636	msedge.exe
Token: SeDebugPrivilege	4408	Msedge.exe
Token: SeDebugPrivilege	3852	Msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2636	msedge.exe

Suspicious use of WriteProcessMemory 40 IoCs

description	pid	Process	procid_target
PID 4788 wrote to memory of 2040	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	84
PID 4788 wrote to memory of 2040	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	84
PID 2040 wrote to memory of 380	2040	cmd.exe	85
PID 2040 wrote to memory of 380	2040	cmd.exe	85
PID 4788 wrote to memory of 3876	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	87
PID 4788 wrote to memory of 3876	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	87
PID 3876 wrote to memory of 4968	3876	cmd.exe	88
PID 3876 wrote to memory of 4968	3876	cmd.exe	88
PID 4788 wrote to memory of 804	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	89
PID 4788 wrote to memory of 804	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	89
PID 804 wrote to memory of 2812	804	cmd.exe	90
PID 804 wrote to memory of 2812	804	cmd.exe	90
PID 4788 wrote to memory of 4700	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	91
PID 4788 wrote to memory of 4700	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	91
PID 4700 wrote to memory of 3480	4700	cmd.exe	92
PID 4700 wrote to memory of 3480	4700	cmd.exe	92
PID 4788 wrote to memory of 4696	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	93
PID 4788 wrote to memory of 4696	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	93
PID 4788 wrote to memory of 4252	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	94
PID 4788 wrote to memory of 4252	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	94
PID 4252 wrote to memory of 2636	4252	cmd.exe	95
PID 4252 wrote to memory of 2636	4252	cmd.exe	95
PID 4788 wrote to memory of 1848	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	96
PID 4788 wrote to memory of 1848	4788	8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe	96
PID 1848 wrote to memory of 3204	1848	cmd.exe	97
PID 1848 wrote to memory of 3204	1848	cmd.exe	97
PID 1848 wrote to memory of 4804	1848	cmd.exe	99
PID 1848 wrote to memory of 4804	1848	cmd.exe	99
PID 1848 wrote to memory of 1032	1848	cmd.exe	100
PID 1848 wrote to memory of 1032	1848	cmd.exe	100
PID 2636 wrote to memory of 3560	2636	msedge.exe	109
PID 2636 wrote to memory of 3560	2636	msedge.exe	109
PID 2636 wrote to memory of 4468	2636	msedge.exe	111
PID 2636 wrote to memory of 4468	2636	msedge.exe	111
PID 2636 wrote to memory of 1728	2636	msedge.exe	113
PID 2636 wrote to memory of 1728	2636	msedge.exe	113
PID 2636 wrote to memory of 1344	2636	msedge.exe	115
PID 2636 wrote to memory of 1344	2636	msedge.exe	115
PID 2636 wrote to memory of 3628	2636	msedge.exe	119
PID 2636 wrote to memory of 3628	2636	msedge.exe	119

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:4788
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM EpicGamesLauncher.exe /F
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2040
- - C:\Windows\system32\taskkill.exe
    taskkill /IM EpicGamesLauncher.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:380
- 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:3876
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping_BE.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4968
- 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:804
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2812
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM x64dbg.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4700
- - C:\Windows\system32\taskkill.exe
    taskkill /IM x64dbg.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3480
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:4696
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\msedge.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4252
- - C:\Windows\msedge.exe
    C:\Windows\msedge.exe
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2636
  - - 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:3560
  - - 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:4468
  - - 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:1728
  - - 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:1344
  - - 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:3628
- 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:1848
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\8e70da39f632e60160cc39e7960fe8026c07fe1556c3248a8fe94bdd738f6f69.exe" MD5
    3⤵
    PID:3204
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:4804
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:1032

C:\Users\Public\Msedge.exe
C:\Users\Public\Msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4408

C:\Users\Public\Msedge.exe
C:\Users\Public\Msedge.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3852

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

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Downloads

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

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

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

Filesize
2KB

MD5
d85ba6ff808d9e5444a4b369f5bc2730

SHA1
31aa9d96590fff6981b315e0b391b575e4c0804a

SHA256
84739c608a73509419748e4e20e6cc4e1846056c3fe1929a8300d5a1a488202f

SHA512
8c414eb55b45212af385accc16d9d562adba2123583ce70d22b91161fe878683845512a78f04dedd4ea98ed9b174dbfa98cf696370598ad8e6fbd1e714f1f249

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

Filesize
944B

MD5
62623d22bd9e037191765d5083ce16a3

SHA1
4a07da6872672f715a4780513d95ed8ddeefd259

SHA256
95d79fd575bbd21540e378fcbc1cd00d16f51af62ce15bae7080bb72c24e2010

SHA512
9a448b7a0d867466c2ea04ab84d2a9485d5fd20ab53b2b854f491831ee3f1d781b94d2635f7b0b35cb9f2d373cd52c67570879a56a42ed66bc9db06962ed4992

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

Filesize
944B

MD5
f3eac9b68f104f003d882411d4aa8d57

SHA1
718ea106498cbf60b64e60cf32f1360d894fc9bc

SHA256
99e2bb0e479a8fffd51054d9a2b7cf83afacc769ae695383060ec167138f2601

SHA512
302789e8cfeb058f900e95e4a940d707a94e8d301f94df8d2ce9792fb41834663a5baa8e3c0f3e8f85e6196d7994801b80d97b5a7239e67eb139edde3ba925f1

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

Filesize
944B

MD5
bcbb9bfb676bd2b5e00818847298fc39

SHA1
437b7849277ad58950af5ad8bd8f09a9ca802b3a

SHA256
5666298e1c8d3a4051b8bb9ba30e6313a2aafb6f403cc41e412fcc44b8793d0c

SHA512
cd4ecd4925b9a7ba9f8345144ae0ac308f801d018f17893eedbce1f18d754ea46c26ef512410a120df96b879e338b222f15801db50f1ff8a8969b23b322f6574

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

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\msedge.exe

Filesize
204KB

MD5
4738e3496a3efe5f19c57b764eb5ba9b

SHA1
da9163944b1f51438b2602cbc95660af43172065

SHA256
cb51764f19e66bb6accd7f0418332bac7759073ed245f0633dddd53f68e81933

SHA512
4cb3029e136471edf2ebb46d1e4fc3a70e5138a5bd4b3fb182b6746d00c69fd5cf8822c0c90c2bcb4d8276db0cecac16ea0198e18a44e755a340495b19cc2238

Download Submit
memory/2636-4-0x00000000002A0000-0x00000000002D8000-memory.dmp

Filesize
224KB

Download
memory/3560-5-0x00000138350A0000-0x00000138350C2000-memory.dmp

Filesize
136KB

Download