xworm | f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc

Analysis

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

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
17-11-2024 18:12

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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/0x000b000000012280-2.dat	family_xworm
behavioral1/memory/3040-4-0x0000000000B50000-0x0000000000B88000-memory.dmp	family_xworm
behavioral1/memory/1544-37-0x0000000000E50000-0x0000000000E88000-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
1748	powershell.exe
2352	powershell.exe
1736	powershell.exe
2392	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
3040	msedge.exe
1544	Msedge.exe
552	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
2560	cmd.exe
2092	cmd.exe

Kills process with taskkill 4 IoCs

evasion

pid	Process
2536	taskkill.exe
2568	taskkill.exe
1728	taskkill.exe
2312	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
2752	schtasks.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2352	powershell.exe
1736	powershell.exe
2392	powershell.exe
1748	powershell.exe
3040	msedge.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	taskkill.exe
Token: SeDebugPrivilege	2312	taskkill.exe
Token: SeDebugPrivilege	2536	taskkill.exe
Token: SeDebugPrivilege	2568	taskkill.exe
Token: SeDebugPrivilege	3040	msedge.exe
Token: SeDebugPrivilege	2352	powershell.exe
Token: SeDebugPrivilege	1736	powershell.exe
Token: SeDebugPrivilege	2392	powershell.exe
Token: SeDebugPrivilege	1748	powershell.exe
Token: SeDebugPrivilege	3040	msedge.exe
Token: SeDebugPrivilege	1544	Msedge.exe
Token: SeDebugPrivilege	552	Msedge.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3040	msedge.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 2120	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	31
PID 3036 wrote to memory of 2120	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	31
PID 3036 wrote to memory of 2120	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	31
PID 2120 wrote to memory of 1728	2120	cmd.exe	32
PID 2120 wrote to memory of 1728	2120	cmd.exe	32
PID 2120 wrote to memory of 1728	2120	cmd.exe	32
PID 3036 wrote to memory of 2092	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	34
PID 3036 wrote to memory of 2092	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	34
PID 3036 wrote to memory of 2092	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	34
PID 2092 wrote to memory of 2312	2092	cmd.exe	35
PID 2092 wrote to memory of 2312	2092	cmd.exe	35
PID 2092 wrote to memory of 2312	2092	cmd.exe	35
PID 3036 wrote to memory of 2560	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	36
PID 3036 wrote to memory of 2560	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	36
PID 3036 wrote to memory of 2560	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	36
PID 2560 wrote to memory of 2536	2560	cmd.exe	37
PID 2560 wrote to memory of 2536	2560	cmd.exe	37
PID 2560 wrote to memory of 2536	2560	cmd.exe	37
PID 3036 wrote to memory of 320	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	38
PID 3036 wrote to memory of 320	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	38
PID 3036 wrote to memory of 320	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	38
PID 320 wrote to memory of 2568	320	cmd.exe	39
PID 320 wrote to memory of 2568	320	cmd.exe	39
PID 320 wrote to memory of 2568	320	cmd.exe	39
PID 3036 wrote to memory of 2980	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 3036 wrote to memory of 2980	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 3036 wrote to memory of 2980	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	40
PID 3036 wrote to memory of 2992	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	41
PID 3036 wrote to memory of 2992	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	41
PID 3036 wrote to memory of 2992	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	41
PID 2992 wrote to memory of 3040	2992	cmd.exe	42
PID 2992 wrote to memory of 3040	2992	cmd.exe	42
PID 2992 wrote to memory of 3040	2992	cmd.exe	42
PID 3036 wrote to memory of 2844	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	43
PID 3036 wrote to memory of 2844	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	43
PID 3036 wrote to memory of 2844	3036	f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe	43
PID 2844 wrote to memory of 2796	2844	cmd.exe	44
PID 2844 wrote to memory of 2796	2844	cmd.exe	44
PID 2844 wrote to memory of 2796	2844	cmd.exe	44
PID 2844 wrote to memory of 2960	2844	cmd.exe	45
PID 2844 wrote to memory of 2960	2844	cmd.exe	45
PID 2844 wrote to memory of 2960	2844	cmd.exe	45
PID 2844 wrote to memory of 2952	2844	cmd.exe	46
PID 2844 wrote to memory of 2952	2844	cmd.exe	46
PID 2844 wrote to memory of 2952	2844	cmd.exe	46
PID 3040 wrote to memory of 2352	3040	msedge.exe	48
PID 3040 wrote to memory of 2352	3040	msedge.exe	48
PID 3040 wrote to memory of 2352	3040	msedge.exe	48
PID 3040 wrote to memory of 1736	3040	msedge.exe	50
PID 3040 wrote to memory of 1736	3040	msedge.exe	50
PID 3040 wrote to memory of 1736	3040	msedge.exe	50
PID 3040 wrote to memory of 2392	3040	msedge.exe	52
PID 3040 wrote to memory of 2392	3040	msedge.exe	52
PID 3040 wrote to memory of 2392	3040	msedge.exe	52
PID 3040 wrote to memory of 1748	3040	msedge.exe	54
PID 3040 wrote to memory of 1748	3040	msedge.exe	54
PID 3040 wrote to memory of 1748	3040	msedge.exe	54
PID 3040 wrote to memory of 2752	3040	msedge.exe	56
PID 3040 wrote to memory of 2752	3040	msedge.exe	56
PID 3040 wrote to memory of 2752	3040	msedge.exe	56
PID 448 wrote to memory of 1544	448	taskeng.exe	59
PID 448 wrote to memory of 1544	448	taskeng.exe	59
PID 448 wrote to memory of 1544	448	taskeng.exe	59
PID 448 wrote to memory of 552	448	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\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe
"C:\Users\Admin\AppData\Local\Temp\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM EpicGamesLauncher.exe /F
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2120
- - C:\Windows\system32\taskkill.exe
    taskkill /IM EpicGamesLauncher.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:1728
- 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:2092
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping_BE.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2312
- 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:2560
- - C:\Windows\system32\taskkill.exe
    taskkill /IM FortniteClient-Win64-Shipping.exe /F
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2536
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c taskkill /IM x64dbg.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:320
- - C:\Windows\system32\taskkill.exe
    taskkill /IM x64dbg.exe
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:2568
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c cls
  2⤵
  PID:2980
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c start C:\Windows\msedge.exe
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2992
- - 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:3040
  - - 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:2352
  - - 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:1736
  - - 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:2392
  - - 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:1748
  - - 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:2752
- 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:2844
- - C:\Windows\system32\certutil.exe
    certutil -hashfile "C:\Users\Admin\AppData\Local\Temp\f126b1c0b4ff973d9618b7287d011b61731c2b0e5e9960c72f5ef444288aa8dc.exe" MD5
    3⤵
    PID:2796
- - C:\Windows\system32\find.exe
    find /i /v "md5"
    3⤵
    PID:2960
- - C:\Windows\system32\find.exe
    find /i /v "certutil"
    3⤵
    PID:2952

C:\Windows\system32\taskeng.exe
taskeng.exe {036A22A0-4536-4720-BFCC-011CD68E41AA} S-1-5-21-1163522206-1469769407-485553996-1000:PJCSDMRP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:448
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1544
- C:\Users\Public\Msedge.exe
  C:\Users\Public\Msedge.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:552

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\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
005a4128aa75c2dbef8b078d60ac845a

SHA1
2ff86d35e6d41d206801717adf3f501b7445f548

SHA256
fe9cb5ae99ea710eb4b460de4fd7a1fb6341e6d78110234609aa8d3e6ea2e476

SHA512
6086dde3a399750ed738bcc26e2496d4a6c71d37d8095150b6b1df9ce7142d08a8a1217495f39be281b6d6937b6a03a2400a7d4f8de465dfe3308eb8237333e4

Download Submit
C:\Windows\msedge.exe

Filesize
204KB

MD5
4738e3496a3efe5f19c57b764eb5ba9b

SHA1
da9163944b1f51438b2602cbc95660af43172065

SHA256
cb51764f19e66bb6accd7f0418332bac7759073ed245f0633dddd53f68e81933

SHA512
4cb3029e136471edf2ebb46d1e4fc3a70e5138a5bd4b3fb182b6746d00c69fd5cf8822c0c90c2bcb4d8276db0cecac16ea0198e18a44e755a340495b19cc2238

Download Submit
memory/1544-37-0x0000000000E50000-0x0000000000E88000-memory.dmp

Filesize
224KB

Download
memory/1736-16-0x000000001B6E0000-0x000000001B9C2000-memory.dmp

Filesize
2.9MB

Download
memory/1736-17-0x0000000001F80000-0x0000000001F88000-memory.dmp

Filesize
32KB

Download
memory/2352-9-0x000000001B620000-0x000000001B902000-memory.dmp

Filesize
2.9MB

Download
memory/2352-10-0x0000000001D60000-0x0000000001D68000-memory.dmp

Filesize
32KB

Download
memory/3040-4-0x0000000000B50000-0x0000000000B88000-memory.dmp

Filesize
224KB

Download