xworm | a25bff1c3254fa942a830abd32bd1953e282a321a94ab9fc22e25f66d5f4b1a2

Analysis

max time kernel
55s
max time network
58s
platform
windows11-21h2_x64
resource
win11-20240611-en
resource tags

arch:x64arch:x86image:win11-20240611-enlocale:en-usos:windows11-21h2-x64system
submitted
15-06-2024 05:15

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General

Target

Nkomssgp.exe
Size

4.6MB
MD5

1d6421617b9bdaccaa87db2edc96cda0
SHA1

002eb8b01151aebe91d8a8f8d4ed52c3aad9e1b2
SHA256

a25bff1c3254fa942a830abd32bd1953e282a321a94ab9fc22e25f66d5f4b1a2
SHA512

80f991929992adeda30d8137bf59c435671548f4580dac3e1c6df7c129c5d554711365a3b375cff8568345f554f971026ea60785931deeb8baacd6c643e92104
SSDEEP

24576:w5VeFILu7XJJbYzr8KNJWtOh6S9JD4E678avKanuEXLI16NqX6QZkUHHsOS8dK/Z:4Vw

Score

10^/10

xworm execution rat trojan

Malware Config

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral1/memory/4552-4902-0x0000000000400000-0x0000000000434000-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

Processes:

powershell.exepowershell.exe

pid process

2588 powershell.exe
1636 powershell.exe
Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service
T1102

Processes:

flow ioc

1 pastebin.com
4 pastebin.com
Looks up external IP address via web service 1 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow ioc

1 ip-api.com
Suspicious use of SetThreadContext 1 IoCs

Processes:

Nkomssgp.exe

description pid process target process

PID 4284 set thread context of 4552 4284 Nkomssgp.exe Nkomssgp.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Suspicious behavior: EnumeratesProcesses 6 IoCs

Processes:

Nkomssgp.exepowershell.exepowershell.exeNkomssgp.exe

pid process

4284 Nkomssgp.exe
2588 powershell.exe
2588 powershell.exe
1636 powershell.exe
1636 powershell.exe
4552 Nkomssgp.exe

pid	process
2588	powershell.exe
1636	powershell.exe

flow	ioc
1	pastebin.com
4	pastebin.com

flow	ioc
1	ip-api.com

description	pid	process	target process
PID 4284 set thread context of 4552	4284	Nkomssgp.exe	Nkomssgp.exe

pid	process
4284	Nkomssgp.exe
2588	powershell.exe
2588	powershell.exe
1636	powershell.exe
1636	powershell.exe
4552	Nkomssgp.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

Nkomssgp.exeNkomssgp.exepowershell.exepowershell.exe

description	pid	process
Token: SeDebugPrivilege	4284	Nkomssgp.exe
Token: SeDebugPrivilege	4284	Nkomssgp.exe
Token: SeDebugPrivilege	4552	Nkomssgp.exe
Token: SeDebugPrivilege	2588	powershell.exe
Token: SeDebugPrivilege	1636	powershell.exe
Token: SeDebugPrivilege	4552	Nkomssgp.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Nkomssgp.exe

pid process

4552 Nkomssgp.exe

pid	process
4552	Nkomssgp.exe

Suspicious use of WriteProcessMemory 14 IoCs

Processes:

Nkomssgp.exeNkomssgp.exe

description	pid	process	target process
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4284 wrote to memory of 4552	4284	Nkomssgp.exe	Nkomssgp.exe
PID 4552 wrote to memory of 2588	4552	Nkomssgp.exe	powershell.exe
PID 4552 wrote to memory of 2588	4552	Nkomssgp.exe	powershell.exe
PID 4552 wrote to memory of 2588	4552	Nkomssgp.exe	powershell.exe
PID 4552 wrote to memory of 1636	4552	Nkomssgp.exe	powershell.exe
PID 4552 wrote to memory of 1636	4552	Nkomssgp.exe	powershell.exe
PID 4552 wrote to memory of 1636	4552	Nkomssgp.exe	powershell.exe

C:\Users\Admin\AppData\Local\Temp\Nkomssgp.exe
"C:\Users\Admin\AppData\Local\Temp\Nkomssgp.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4284

C:\Users\Admin\AppData\Local\Temp\Nkomssgp.exe
"C:\Users\Admin\AppData\Local\Temp\Nkomssgp.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4552

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionPath 'C:\Users\Admin\AppData\Local\Temp\Nkomssgp.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2588

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Nkomssgp.exe'
3⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1636

Network

MITRE ATT&CK Matrix ATT&CK v13

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

Exfiltration

Command and Control

Web Service

T1102

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\Nkomssgp.exe.log
Filesize
805B

MD5
9d0cacca373731660e8268a162d9d4ff

SHA1
a82111d00132cdf7ef46af5681601d55c6a0e17c

SHA256
95932f81206717ff86f0974ee37dc40d5d914f730f00a08344b4c1765d663394

SHA512
8c971ab501fc322b13f53b03325b2295e1eedb12b6d50a4225e6e3b4bf5128665b1a3d8b560a8b04f14bfa6f5cba41058e4f546139101fc303f3b8393f5ca485

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
Filesize
2KB

MD5
d0c46cad6c0778401e21910bd6b56b70

SHA1
7be418951ea96326aca445b8dfe449b2bfa0dca6

SHA256
9600b3fdf0565ccb49e21656aa4b24d7c18f776bfd04d9ee984b134707550f02

SHA512
057531b468f7fbbb2175a696a8aab274dec0d17d9f71df309edcff35e064f3378050066a3df47ccd03048fac461594ec75e3d4fe64f9dd79949d129f51e02949

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
Filesize
18KB

MD5
a60181a4528030274396adce728b9291

SHA1
0a3a2036925ddea87690be698690b22fe5977446

SHA256
c5421717244e28377218d689054a10296c04119d947131c1fff8f688b5ffd303

SHA512
bb64d1f65ee0b5feedfd00684e2ed05d40f6c508faff5f8d0018af7e0f2f5905970b8b7660f1f2bdadccac27f97c479c3509254c0f3d578b156d6f4627497147

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5nc2ewgu.mea.ps1
Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1636-4959-0x00000000700E0000-0x000000007012C000-memory.dmp

Filesize
304KB

Download
memory/1636-4949-0x0000000006300000-0x0000000006657000-memory.dmp

Filesize
3.3MB

Download
memory/2588-4936-0x00000000076D0000-0x0000000007D4A000-memory.dmp

Filesize
6.5MB

Download
memory/2588-4925-0x00000000700E0000-0x000000007012C000-memory.dmp

Filesize
304KB

Download
memory/2588-4942-0x00000000072E0000-0x00000000072F5000-memory.dmp

Filesize
84KB

Download
memory/2588-4941-0x00000000072D0000-0x00000000072DE000-memory.dmp

Filesize
56KB

Download
memory/2588-4940-0x00000000072A0000-0x00000000072B1000-memory.dmp

Filesize
68KB

Download
memory/2588-4939-0x0000000007330000-0x00000000073C6000-memory.dmp

Filesize
600KB

Download
memory/2588-4938-0x0000000007100000-0x000000000710A000-memory.dmp

Filesize
40KB

Download
memory/2588-4937-0x0000000007090000-0x00000000070AA000-memory.dmp

Filesize
104KB

Download
memory/2588-4944-0x00000000073D0000-0x00000000073D8000-memory.dmp

Filesize
32KB

Download
memory/2588-4935-0x0000000006F60000-0x0000000007004000-memory.dmp

Filesize
656KB

Download
memory/2588-4934-0x0000000006F40000-0x0000000006F5E000-memory.dmp

Filesize
120KB

Download
memory/2588-4943-0x00000000073F0000-0x000000000740A000-memory.dmp

Filesize
104KB

Download
memory/2588-4924-0x0000000006F00000-0x0000000006F34000-memory.dmp

Filesize
208KB

Download
memory/2588-4923-0x0000000005D70000-0x0000000005DBC000-memory.dmp

Filesize
304KB

Download
memory/2588-4922-0x0000000005D30000-0x0000000005D4E000-memory.dmp

Filesize
120KB

Download
memory/2588-4921-0x00000000058A0000-0x0000000005BF7000-memory.dmp

Filesize
3.3MB

Download
memory/2588-4947-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/2588-4910-0x0000000004F90000-0x0000000004FB2000-memory.dmp

Filesize
136KB

Download
memory/2588-4911-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/2588-4912-0x0000000005130000-0x0000000005196000-memory.dmp

Filesize
408KB

Download
memory/2588-4909-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/2588-4907-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/2588-4908-0x0000000005270000-0x000000000589A000-memory.dmp

Filesize
6.2MB

Download
memory/2588-4906-0x0000000002560000-0x0000000002596000-memory.dmp

Filesize
216KB

Download
memory/4284-40-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-36-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-8-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-24-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-12-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-6-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-5-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-66-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-4891-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/4284-4892-0x0000000007020000-0x000000000708E000-memory.dmp

Filesize
440KB

Download
memory/4284-4893-0x0000000007090000-0x00000000070DC000-memory.dmp

Filesize
304KB

Download
memory/4284-4894-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/4284-4895-0x0000000005950000-0x00000000059A4000-memory.dmp

Filesize
336KB

Download
memory/4284-14-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-4900-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/4284-1-0x0000000000990000-0x0000000000E22000-memory.dmp

Filesize
4.6MB

Download
memory/4284-2-0x0000000006B80000-0x0000000006DB2000-memory.dmp

Filesize
2.2MB

Download
memory/4284-3-0x0000000007360000-0x0000000007906000-memory.dmp

Filesize
5.6MB

Download
memory/4284-4-0x0000000006E50000-0x0000000006EE2000-memory.dmp

Filesize
584KB

Download
memory/4284-18-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-16-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-22-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-26-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-28-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-30-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-32-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-35-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-11-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-38-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-0-0x000000007501E000-0x000000007501F000-memory.dmp

Filesize
4KB

Download
memory/4284-46-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-42-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-44-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-48-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-50-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-52-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-54-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-56-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-60-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-62-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-64-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-68-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-58-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4284-20-0x0000000006B80000-0x0000000006DAC000-memory.dmp

Filesize
2.2MB

Download
memory/4552-4905-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/4552-4904-0x0000000005840000-0x00000000058A6000-memory.dmp

Filesize
408KB

Download
memory/4552-4903-0x0000000005720000-0x00000000057BC000-memory.dmp

Filesize
624KB

Download
memory/4552-4902-0x0000000000400000-0x0000000000434000-memory.dmp

Filesize
208KB

Download
memory/4552-4901-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/4552-4969-0x0000000007290000-0x000000000729A000-memory.dmp

Filesize
40KB

Download
memory/4552-4970-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download
memory/4552-4971-0x0000000007300000-0x000000000730C000-memory.dmp

Filesize
48KB

Download
memory/4552-4972-0x0000000075010000-0x00000000757C1000-memory.dmp

Filesize
7.7MB

Download