xworm | 0ee2a7df29906b7f4567d2861efddfe6302ee0c1b042aabcddec52f53190bc37

Analysis

max time kernel
150s
max time network
148s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
19-11-2024 01:39

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General

Target

f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe
Size

867KB
MD5

a8bd5b655845ba8a23a38abfd7e1bb03
SHA1

90b245be80f5beb8b7b0e50bf910e1b4bff1f1cf
SHA256

f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc
SHA512

f560893e04ee817be99c07a42ea654ce3f2ceaddcb3a644094a5316333ce85911f87eb06c10960673d53050e9b4a60410f0c61169c21e203014ba338138ed664
SSDEEP

12288:i98NVBjvwSRz04lj4k/GG6yY5adl8M64mzx8B/wmtilK6yEbx9:vV9vT5lj4MGdyY5SWv4mM/eyEr

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 3 IoCs

resource	yara_rule
behavioral1/files/0x000f00000001756e-3.dat	family_xworm
behavioral1/memory/3016-4-0x00000000000F0000-0x0000000000128000-memory.dmp	family_xworm
behavioral1/memory/976-36-0x0000000000ED0000-0x0000000000F08000-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
2252	powershell.exe
1100	powershell.exe
2176	powershell.exe
2568	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
3016	msedge.exe
976	Msedge.exe
1992	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	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.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
2920	cmd.exe
2864	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
3012	taskkill.exe
2932	taskkill.exe
2316	taskkill.exe
2872	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
1744	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2252	powershell.exe
1100	powershell.exe
2176	powershell.exe
2568	powershell.exe
3016	msedge.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	3012	taskkill.exe
Token: SeDebugPrivilege	2932	taskkill.exe
Token: SeDebugPrivilege	2316	taskkill.exe
Token: SeDebugPrivilege	2872	taskkill.exe
Token: SeDebugPrivilege	3016	msedge.exe
Token: SeDebugPrivilege	2252	powershell.exe
Token: SeDebugPrivilege	1100	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	2568	powershell.exe
Token: SeDebugPrivilege	3016	msedge.exe
Token: SeDebugPrivilege	976	Msedge.exe
Token: SeDebugPrivilege	1992	Msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3016	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 1516	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	30
PID 392 wrote to memory of 1516	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	30
PID 392 wrote to memory of 1516	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	30
PID 1516 wrote to memory of 3012	1516	cmd.exe	31
PID 1516 wrote to memory of 3012	1516	cmd.exe	31
PID 1516 wrote to memory of 3012	1516	cmd.exe	31
PID 392 wrote to memory of 2920	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	33
PID 392 wrote to memory of 2920	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	33
PID 392 wrote to memory of 2920	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	33
PID 2920 wrote to memory of 2932	2920	cmd.exe	34
PID 2920 wrote to memory of 2932	2920	cmd.exe	34
PID 2920 wrote to memory of 2932	2920	cmd.exe	34
PID 392 wrote to memory of 2864	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	35
PID 392 wrote to memory of 2864	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	35
PID 392 wrote to memory of 2864	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	35
PID 2864 wrote to memory of 2316	2864	cmd.exe	36
PID 2864 wrote to memory of 2316	2864	cmd.exe	36
PID 2864 wrote to memory of 2316	2864	cmd.exe	36
PID 392 wrote to memory of 3004	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	37
PID 392 wrote to memory of 3004	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	37
PID 392 wrote to memory of 3004	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	37
PID 3004 wrote to memory of 2872	3004	cmd.exe	38
PID 3004 wrote to memory of 2872	3004	cmd.exe	38
PID 3004 wrote to memory of 2872	3004	cmd.exe	38
PID 392 wrote to memory of 2976	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	39
PID 392 wrote to memory of 2976	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	39
PID 392 wrote to memory of 2976	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	39
PID 392 wrote to memory of 2884	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 392 wrote to memory of 2884	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 392 wrote to memory of 2884	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 2884 wrote to memory of 3016	2884	cmd.exe	41
PID 2884 wrote to memory of 3016	2884	cmd.exe	41
PID 2884 wrote to memory of 3016	2884	cmd.exe	41
PID 392 wrote to memory of 2996	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	42
PID 392 wrote to memory of 2996	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	42
PID 392 wrote to memory of 2996	392	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	42
PID 2996 wrote to memory of 2716	2996	cmd.exe	43
PID 2996 wrote to memory of 2716	2996	cmd.exe	43
PID 2996 wrote to memory of 2716	2996	cmd.exe	43
PID 2996 wrote to memory of 2724	2996	cmd.exe	44
PID 2996 wrote to memory of 2724	2996	cmd.exe	44
PID 2996 wrote to memory of 2724	2996	cmd.exe	44
PID 2996 wrote to memory of 2732	2996	cmd.exe	45
PID 2996 wrote to memory of 2732	2996	cmd.exe	45
PID 2996 wrote to memory of 2732	2996	cmd.exe	45
PID 3016 wrote to memory of 2252	3016	msedge.exe	46
PID 3016 wrote to memory of 2252	3016	msedge.exe	46
PID 3016 wrote to memory of 2252	3016	msedge.exe	46
PID 3016 wrote to memory of 1100	3016	msedge.exe	48
PID 3016 wrote to memory of 1100	3016	msedge.exe	48
PID 3016 wrote to memory of 1100	3016	msedge.exe	48
PID 3016 wrote to memory of 2176	3016	msedge.exe	50
PID 3016 wrote to memory of 2176	3016	msedge.exe	50
PID 3016 wrote to memory of 2176	3016	msedge.exe	50
PID 3016 wrote to memory of 2568	3016	msedge.exe	52
PID 3016 wrote to memory of 2568	3016	msedge.exe	52
PID 3016 wrote to memory of 2568	3016	msedge.exe	52
PID 3016 wrote to memory of 1744	3016	msedge.exe	54
PID 3016 wrote to memory of 1744	3016	msedge.exe	54
PID 3016 wrote to memory of 1744	3016	msedge.exe	54
PID 2192 wrote to memory of 976	2192	taskeng.exe	57
PID 2192 wrote to memory of 976	2192	taskeng.exe	57
PID 2192 wrote to memory of 976	2192	taskeng.exe	57
PID 2192 wrote to memory of 1992	2192	taskeng.exe	58

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\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe
"C:\Users\Admin\AppData\Local\Temp\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM EpicGamesLauncher.exe /F
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1516
- - C:\Windows\system32\taskkill.exe
    taskkill /IM EpicGamesLauncher.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:3012
- 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:2920
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping_BE.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2932
- 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:2864
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2316
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM x64dbg.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3004
- - C:\Windows\system32\taskkill.exe
    taskkill /IM x64dbg.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2872
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2976
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\msedge.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2884
- - 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:3016
  - - 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:2252
  - - 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:1100
  - - 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:2176
  - - 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:2568
  - - 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:1744
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe" MD5 | find /i /v "md5" | find /i /v "certutil"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2996
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe" MD5
    3⤵
    PID:2716
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2724
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:2732

C:\Windows\system32\taskeng.exe
taskeng.exe {C7DAE4C4-91F8-4F11-B520-618560FBE870} S-1-5-21-3692679935-4019334568-335155002-1000:BCXRJFKE\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2192
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:976
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1992

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
5846f1335c0b33a00258e960a1302215

SHA1
44214964b43712e0d0f410b5329af47be325dbfd

SHA256
bd068c72594bfa0ef6d52e39c40b33d210e54a3e0957c7178194c3d192771faf

SHA512
1ba40e745edc08cb2409563a8b581378f5a58512e10533130312eb8f99623e0921654251ff1cf72a4c1ea3b5ee11a8865661bd7bdbf79455c0f7582324a42033

Download Submit
C:\Windows\msedge.exe

Filesize
204KB

MD5
4738e3496a3efe5f19c57b764eb5ba9b

SHA1
da9163944b1f51438b2602cbc95660af43172065

SHA256
cb51764f19e66bb6accd7f0418332bac7759073ed245f0633dddd53f68e81933

SHA512
4cb3029e136471edf2ebb46d1e4fc3a70e5138a5bd4b3fb182b6746d00c69fd5cf8822c0c90c2bcb4d8276db0cecac16ea0198e18a44e755a340495b19cc2238

Download Submit
memory/976-36-0x0000000000ED0000-0x0000000000F08000-memory.dmp

Filesize
224KB

Download
memory/1100-16-0x000000001B320000-0x000000001B602000-memory.dmp

Filesize
2.9MB

Download
memory/1100-17-0x0000000002310000-0x0000000002318000-memory.dmp

Filesize
32KB

Download
memory/2252-9-0x000000001B310000-0x000000001B5F2000-memory.dmp

Filesize
2.9MB

Download
memory/2252-10-0x0000000002480000-0x0000000002488000-memory.dmp

Filesize
32KB

Download
memory/3016-4-0x00000000000F0000-0x0000000000128000-memory.dmp

Filesize
224KB

Download