xworm | c2a9fefda9159dd2712510c1c9077a1885d0ebc45251285dad95ba7184b98856

Analysis

max time kernel
118s
max time network
141s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
03-11-2024 19:38

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

XwormLoader.exe
Size

7.9MB
MD5

5b757c6d0af650a77ba1bf7edea18b36
SHA1

c2ee4e12ff4b70511dbcab25dbf8b0d45f2d52b3
SHA256

c2a9fefda9159dd2712510c1c9077a1885d0ebc45251285dad95ba7184b98856
SHA512

93ca04887c63c3a0a4a5d42c48d0f4f7cc7fe7f6dad4dd45136ac048639d2edab66a2d2459779b9a2a075fa8981ea40567b34e5ed0535c1deecfe5e838385960
SSDEEP

196608:T7b4C6XrL5HfZBEhl3xZi5OslC9+PWbXooVl41u1mMFsr5:T7yvRZBEP3xZi5Oso+PWbXooL4Sa

Score

10^/10

xworm execution rat trojan

Malware Config

Signatures

Detect Xworm Payload 4 IoCs

resource	yara_rule
behavioral1/files/0x0004000000004ed7-11.dat	family_xworm
behavioral1/memory/1228-13-0x0000000000A80000-0x0000000000AAA000-memory.dmp	family_xworm
behavioral1/memory/2052-59-0x0000000000AF0000-0x0000000000B1A000-memory.dmp	family_xworm
behavioral1/memory/2068-61-0x0000000000250000-0x000000000027A000-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
2236	powershell.exe
2784	powershell.exe
3000	powershell.exe
1948	powershell.exe

.NET Reactor proctector 4 IoCs

Detects an executable protected by an unregistered version of Eziriz's .NET Reactor.

resource	yara_rule
behavioral1/files/0x0004000000004ed7-11.dat	net_reactor
behavioral1/memory/1228-13-0x0000000000A80000-0x0000000000AAA000-memory.dmp	net_reactor
behavioral1/memory/2052-59-0x0000000000AF0000-0x0000000000B1A000-memory.dmp	net_reactor
behavioral1/memory/2068-61-0x0000000000250000-0x000000000027A000-memory.dmp	net_reactor

Deletes itself 1 IoCs

pid	Process
2680	cmd.exe

Executes dropped EXE 4 IoCs

pid	Process
1228	svchost.exe
2992	Xworm V5.6.exe
2052	svchost.exe
2068	svchost.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2772	timeout.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
2608	schtasks.exe

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1228	svchost.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2236	powershell.exe
2784	powershell.exe
3000	powershell.exe
1948	powershell.exe
1228	svchost.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	2816	XwormLoader.exe
Token: SeDebugPrivilege	1228	svchost.exe
Token: SeDebugPrivilege	2236	powershell.exe
Token: SeDebugPrivilege	2784	powershell.exe
Token: SeDebugPrivilege	3000	powershell.exe
Token: SeDebugPrivilege	1948	powershell.exe
Token: SeDebugPrivilege	2052	svchost.exe
Token: SeDebugPrivilege	2068	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1228	svchost.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 2816 wrote to memory of 1228	2816	XwormLoader.exe	31
PID 2816 wrote to memory of 1228	2816	XwormLoader.exe	31
PID 2816 wrote to memory of 1228	2816	XwormLoader.exe	31
PID 2816 wrote to memory of 2992	2816	XwormLoader.exe	32
PID 2816 wrote to memory of 2992	2816	XwormLoader.exe	32
PID 2816 wrote to memory of 2992	2816	XwormLoader.exe	32
PID 2816 wrote to memory of 2680	2816	XwormLoader.exe	33
PID 2816 wrote to memory of 2680	2816	XwormLoader.exe	33
PID 2816 wrote to memory of 2680	2816	XwormLoader.exe	33
PID 2680 wrote to memory of 2772	2680	cmd.exe	35
PID 2680 wrote to memory of 2772	2680	cmd.exe	35
PID 2680 wrote to memory of 2772	2680	cmd.exe	35
PID 1228 wrote to memory of 2236	1228	svchost.exe	36
PID 1228 wrote to memory of 2236	1228	svchost.exe	36
PID 1228 wrote to memory of 2236	1228	svchost.exe	36
PID 1228 wrote to memory of 2784	1228	svchost.exe	38
PID 1228 wrote to memory of 2784	1228	svchost.exe	38
PID 1228 wrote to memory of 2784	1228	svchost.exe	38
PID 1228 wrote to memory of 3000	1228	svchost.exe	40
PID 1228 wrote to memory of 3000	1228	svchost.exe	40
PID 1228 wrote to memory of 3000	1228	svchost.exe	40
PID 1228 wrote to memory of 1948	1228	svchost.exe	42
PID 1228 wrote to memory of 1948	1228	svchost.exe	42
PID 1228 wrote to memory of 1948	1228	svchost.exe	42
PID 2992 wrote to memory of 2508	2992	Xworm V5.6.exe	44
PID 2992 wrote to memory of 2508	2992	Xworm V5.6.exe	44
PID 2992 wrote to memory of 2508	2992	Xworm V5.6.exe	44
PID 1228 wrote to memory of 2608	1228	svchost.exe	45
PID 1228 wrote to memory of 2608	1228	svchost.exe	45
PID 1228 wrote to memory of 2608	1228	svchost.exe	45
PID 1284 wrote to memory of 2052	1284	taskeng.exe	49
PID 1284 wrote to memory of 2052	1284	taskeng.exe	49
PID 1284 wrote to memory of 2052	1284	taskeng.exe	49
PID 1284 wrote to memory of 2068	1284	taskeng.exe	50
PID 1284 wrote to memory of 2068	1284	taskeng.exe	50
PID 1284 wrote to memory of 2068	1284	taskeng.exe	50

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\XwormLoader.exe
"C:\Users\Admin\AppData\Local\Temp\XwormLoader.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2816
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1228
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2236
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:2784
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\ProgramData\svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3000
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'svchost.exe'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1948
- - C:\Windows\System32\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "svchost" /tr "C:\ProgramData\svchost.exe"
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2608
- C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe
  "C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2992
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2992 -s 732
    3⤵
    PID:2508
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpEA7E.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:2680
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2772

C:\Windows\system32\taskeng.exe
taskeng.exe {BCF1463F-BE26-4798-8EE3-3F890E7F65B3} S-1-5-21-3533259084-2542256011-65585152-1000:XPAJOTIY\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1284
- C:\ProgramData\svchost.exe
  C:\ProgramData\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2052
- C:\ProgramData\svchost.exe
  C:\ProgramData\svchost.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2068

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\Xworm V5.6.exe

Filesize
14.9MB

MD5
db51a102eab752762748a2dec8f7f67a

SHA1
194688ec1511b83063f7b0167ae250764b7591d1

SHA256
93e5e7f018053c445c521b010caff89e61f61743635db3500aad32d6e495abb2

SHA512
fb2fb6605a17fedb65e636cf3716568e85b8ea423c23e0513eb87f3a3441e2cabc4c3e6346225a9bf7b81e97470f3ab516feea649a7afb5cdf02faff8d7f09a5

Download Submit
C:\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
144KB

MD5
4b90399888a12fb85ccc3d0190d5a1d3

SHA1
3326c027bac28b9480b0c7f621481a6cc033db4e

SHA256
cede03d0ef98d200bd5b68f6ca4e0d74e2a62fc430a38083663c3031dbb1c77f

SHA512
899ec2df2f5d70716ad5d0686bfe0a6c66ccbcf7f0485efbdfc0615f90b3526cd3d31069fa66c7c6ae8bba6ce92200836c50da40a3731888b7326b970d93216a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpEA7E.tmp.bat

Filesize
163B

MD5
85f29d97ca6cffd74d740fb975823eec

SHA1
f9455fa9039ccb835ae2428485c9fda0e33b5453

SHA256
16ba910412ae40dc9f656a2ca5056a25aed3ead7c18fc42f30de7da03faaf9ee

SHA512
b2b3bd902ab4c3cf0e17ac5926a873af285143b27872bfda24d8142d3b1dccd60c457408aaf241c72ed78d1712bef0f9cc7d913309dabcc7fe8f6c11dc778623

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\EKO0WX8OXHM2RFBGYJD2.temp

Filesize
7KB

MD5
b645cb869a3a88550f15bb68e04b6d6d

SHA1
684f04ad4ea047e3dcc67f49cc12cc8bf7ae34dc

SHA256
48fdb463940a7bd1f9644c031e903879825c4f32bd1d5713a014c09f057dc682

SHA512
1912adfd6bac7b343b115d0794e493094706da854737db78192edd446b5824f6df99c7fba6b84ea5e3bddcc2629ac66219525e807d970a0e2398cbfbcf86363b

Download Submit
memory/1228-15-0x000007FEF3DA3000-0x000007FEF3DA4000-memory.dmp

Filesize
4KB

Download
memory/1228-13-0x0000000000A80000-0x0000000000AAA000-memory.dmp

Filesize
168KB

Download
memory/2052-59-0x0000000000AF0000-0x0000000000B1A000-memory.dmp

Filesize
168KB

Download
memory/2068-61-0x0000000000250000-0x000000000027A000-memory.dmp

Filesize
168KB

Download
memory/2236-35-0x000000001B570000-0x000000001B852000-memory.dmp

Filesize
2.9MB

Download
memory/2236-36-0x0000000001E80000-0x0000000001E88000-memory.dmp

Filesize
32KB

Download
memory/2784-43-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2784-42-0x000000001B630000-0x000000001B912000-memory.dmp

Filesize
2.9MB

Download
memory/2816-8-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-30-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-0-0x000007FEF66FE000-0x000007FEF66FF000-memory.dmp

Filesize
4KB

Download
memory/2816-12-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-6-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-14-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-3-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-2-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2816-1-0x000007FEF6440000-0x000007FEF6DDD000-memory.dmp

Filesize
9.6MB

Download
memory/2992-28-0x00000000001F0000-0x00000000010D8000-memory.dmp

Filesize
14.9MB

Download