xworm | 28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b

Resubmissions

02/09/2024, 04:11

240902-erx5ws1ekl 10

31/08/2024, 15:44

240831-s6y8dssajf 10

31/08/2024, 15:41

240831-s4ytva1gph 10

31/08/2024, 15:35

240831-s1fh4a1fjk 10

Analysis

max time kernel
432s
max time network
441s
platform
windows11-21h2_x64
resource
win11-20240802-en
resource tags

arch:x64arch:x86image:win11-20240802-enlocale:en-usos:windows11-21h2-x64system
submitted
31/08/2024, 15:41

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General

Target

XClient.exe
Size

84KB
MD5

13f12b20731a141144d59aef56828f78
SHA1

2aef63a0f584914b022ea7d039bd431fa99520b3
SHA256

28041fc75ea0dd89b4cfa6338ff7dd3ef053bf5e49eca14f6d8e4acc003c9c6b
SHA512

19f9aeb3ceed2cd0ab93e0f449174de9f07afba41f38c620a1480b052c18ce898d52b9c90f3cfe83611064b4b6cf7444041a4b1d52de214811436975802bcbaa
SSDEEP

1536:E4VFkamGxes+ESPmWnz5fH0hgThsipZR8beJKNlG8V6f7/7zOD5gfRJoBP:E4VNxedPmWt04/UbeSly7/vOD5c4V

Score

10^/10

xworm execution rat trojan

Malware Config

Extracted

Family

xworm

178.215.236.68:7000

Attributes

install_file
USB.exe

Signatures

Detect Xworm Payload 1 IoCs

resource	yara_rule
behavioral1/memory/2480-1-0x0000000000EF0000-0x0000000000F0C000-memory.dmp	family_xworm

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

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

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

execution

PowerShell

T1059.001

pid	Process
1536	powershell.exe
1364	powershell.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
1	ip-api.com

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
2348	timeout.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1536	powershell.exe
1536	powershell.exe
1364	powershell.exe
1364	powershell.exe
2480	XClient.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2480	XClient.exe
Token: SeDebugPrivilege	1536	powershell.exe
Token: SeDebugPrivilege	1364	powershell.exe
Token: SeDebugPrivilege	2480	XClient.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2480	XClient.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2480 wrote to memory of 1536	2480	XClient.exe	84
PID 2480 wrote to memory of 1536	2480	XClient.exe	84
PID 2480 wrote to memory of 1364	2480	XClient.exe	86
PID 2480 wrote to memory of 1364	2480	XClient.exe	86
PID 2480 wrote to memory of 2792	2480	XClient.exe	88
PID 2480 wrote to memory of 2792	2480	XClient.exe	88
PID 2792 wrote to memory of 2348	2792	cmd.exe	90
PID 2792 wrote to memory of 2348	2792	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\XClient.exe
"C:\Users\Admin\AppData\Local\Temp\XClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2480
- 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\XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1536
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'XClient.exe'
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1364
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5B9E.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2792
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2348

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
2KB

MD5
627073ee3ca9676911bee35548eff2b8

SHA1
4c4b68c65e2cab9864b51167d710aa29ebdcff2e

SHA256
85b280a39fc31ba1e15fb06102a05b8405ff3b82feb181d4170f04e466dd647c

SHA512
3c5f6c03e253b83c57e8d6f0334187dbdcdf4fa549eecd36cbc1322dca6d3ca891dc6a019c49ec2eafb88f82d0434299c31e4dfaab123acb42e0546218f311fb

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

Filesize
944B

MD5
e3840d9bcedfe7017e49ee5d05bd1c46

SHA1
272620fb2605bd196df471d62db4b2d280a363c6

SHA256
3ac83e70415b9701ee71a4560232d7998e00c3db020fde669eb01b8821d2746f

SHA512
76adc88ab3930acc6b8b7668e2de797b8c00edcfc41660ee4485259c72a8adf162db62c2621ead5a9950f12bfe8a76ccab79d02fda11860afb0e217812cac376

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_04e45arm.apk.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp5B9E.tmp.bat

Filesize
159B

MD5
1c585b82aa63d4f0d3a1588a07a54aaa

SHA1
d7be256851b5dfe93f749dd1c89748695fe9d967

SHA256
d8d19d2b8c67fa4902c8681787384daa357619d48c5c5cb39184d483ca3bc3b6

SHA512
80625e81fb94feb9363409697ef12a95724184eec5f4dbf5c55a62a567655976a3055af0ccfb07094aea9c805e1ea1207d276417523fe2d359caf180e312db22

Download Submit
memory/1536-18-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/1536-13-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/1536-12-0x000002BC496F0000-0x000002BC49712000-memory.dmp

Filesize
136KB

Download
memory/1536-14-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/1536-17-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/1536-8-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/2480-0-0x00007FFF7B633000-0x00007FFF7B635000-memory.dmp

Filesize
8KB

Download
memory/2480-2-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/2480-30-0x00007FFF7B633000-0x00007FFF7B635000-memory.dmp

Filesize
8KB

Download
memory/2480-31-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download
memory/2480-1-0x0000000000EF0000-0x0000000000F0C000-memory.dmp

Filesize
112KB

Download
memory/2480-36-0x00007FFF7B630000-0x00007FFF7C0F2000-memory.dmp

Filesize
10.8MB

Download