xworm | d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
29-06-2024 20:33

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General

Target

Updater.exe
Size

57KB
MD5

90a6868b7ce2020387d453aa38668584
SHA1

7bde411bb0d7b6aa7a020266a61ce0d61ef0b362
SHA256

d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a
SHA512

243c6010cbee28f5181383565a00c22375828f8b5293d35d9512adb249a4fadfd04eab3fb7b9789d6e1bea39f1cf513439e0f7d72ecb69e00a16e8f6d7f0efcc
SSDEEP

1536:Liu7HktvnRa+lZrOY/FJ9N76iOCweg662XkhiYYtG:LiftnZCgFJ9NTOCql2XkUYYtG

Score

10^/10

xworm execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

hardware-bands.gl.at.ply.gg:63257

Mutex

GRHeRJRFnCzlkxGI

Attributes

Install_directory
%AppData%
install_file
DiscordAutoUpdate.exe

aes.plain

Signatures

Detect Xworm Payload 4 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1740-1-0x0000000000C30000-0x0000000000C44000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe	family_xworm
behavioral1/memory/2128-37-0x0000000000170000-0x0000000000184000-memory.dmp	family_xworm
behavioral1/memory/3064-40-0x0000000001280000-0x0000000001294000-memory.dmp	family_xworm

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

Processes:

powershell.exepowershell.exepowershell.exepowershell.exe

pid process

2428 powershell.exe
2140 powershell.exe
2628 powershell.exe
2408 powershell.exe

pid	process
2428	powershell.exe
2140	powershell.exe
2628	powershell.exe
2408	powershell.exe

Drops startup file 2 IoCs

Processes:

Updater.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DiscordAutoUpdate.lnk	Updater.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DiscordAutoUpdate.lnk	Updater.exe

Executes dropped EXE 2 IoCs

Processes:

DiscordAutoUpdate.exeDiscordAutoUpdate.exe

pid process

2128 DiscordAutoUpdate.exe
3064 DiscordAutoUpdate.exe

pid	process
2128	DiscordAutoUpdate.exe
3064	DiscordAutoUpdate.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

Updater.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\DiscordAutoUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\DiscordAutoUpdate.exe"	Updater.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.

Processes:

flow ioc

4 ip-api.com
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
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

Processes:

schtasks.exe

pid process

2340 schtasks.exe
Suspicious behavior: EnumeratesProcesses 5 IoCs

Processes:

powershell.exepowershell.exepowershell.exepowershell.exeUpdater.exe

pid process

2628 powershell.exe
2408 powershell.exe
2428 powershell.exe
2140 powershell.exe
1740 Updater.exe

flow	ioc
4	ip-api.com

pid	process
2340	schtasks.exe

pid	process
2628	powershell.exe
2408	powershell.exe
2428	powershell.exe
2140	powershell.exe
1740	Updater.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

Processes:

Updater.exepowershell.exepowershell.exepowershell.exepowershell.exeDiscordAutoUpdate.exeDiscordAutoUpdate.exe

description	pid	process
Token: SeDebugPrivilege	1740	Updater.exe
Token: SeDebugPrivilege	2628	powershell.exe
Token: SeDebugPrivilege	2408	powershell.exe
Token: SeDebugPrivilege	2428	powershell.exe
Token: SeDebugPrivilege	2140	powershell.exe
Token: SeDebugPrivilege	1740	Updater.exe
Token: SeDebugPrivilege	2128	DiscordAutoUpdate.exe
Token: SeDebugPrivilege	3064	DiscordAutoUpdate.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

Updater.exe

pid process

1740 Updater.exe

pid	process
1740	Updater.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

Updater.exetaskeng.exe

description	pid	process	target process
PID 1740 wrote to memory of 2628	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2628	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2628	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2408	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2408	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2408	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2428	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2428	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2428	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2140	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2140	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2140	1740	Updater.exe	powershell.exe
PID 1740 wrote to memory of 2340	1740	Updater.exe	schtasks.exe
PID 1740 wrote to memory of 2340	1740	Updater.exe	schtasks.exe
PID 1740 wrote to memory of 2340	1740	Updater.exe	schtasks.exe
PID 2516 wrote to memory of 2128	2516	taskeng.exe	DiscordAutoUpdate.exe
PID 2516 wrote to memory of 2128	2516	taskeng.exe	DiscordAutoUpdate.exe
PID 2516 wrote to memory of 2128	2516	taskeng.exe	DiscordAutoUpdate.exe
PID 2516 wrote to memory of 3064	2516	taskeng.exe	DiscordAutoUpdate.exe
PID 2516 wrote to memory of 3064	2516	taskeng.exe	DiscordAutoUpdate.exe
PID 2516 wrote to memory of 3064	2516	taskeng.exe	DiscordAutoUpdate.exe

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\Updater.exe
"C:\Users\Admin\AppData\Local\Temp\Updater.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1740

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\Updater.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2628

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'Updater.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2408

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\Roaming\DiscordAutoUpdate.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2428

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -ExecutionPolicy Bypass Add-MpPreference -ExclusionProcess 'DiscordAutoUpdate.exe'
2⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:2140

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "DiscordAutoUpdate" /tr "C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2340

C:\Windows\system32\taskeng.exe
taskeng.exe {701F829F-28C1-4F11-9610-2781F4C3FB95} S-1-5-21-2721934792-624042501-2768869379-1000:BISMIZHX\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2516

C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe
C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2128

C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe
C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3064

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Roaming\DiscordAutoUpdate.exe
Filesize
57KB

MD5
90a6868b7ce2020387d453aa38668584

SHA1
7bde411bb0d7b6aa7a020266a61ce0d61ef0b362

SHA256
d2b430a0c74ef2bd97c86d95c35fe964bd00ed17d2e6542be33cc7c99def9d5a

SHA512
243c6010cbee28f5181383565a00c22375828f8b5293d35d9512adb249a4fadfd04eab3fb7b9789d6e1bea39f1cf513439e0f7d72ecb69e00a16e8f6d7f0efcc

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms
Filesize
7KB

MD5
8edea4a6d586e9922d57625f99415cb1

SHA1
07c4e4dd5287581562675501d3533f619e5d3f8c

SHA256
ed32a5af54350c1e1896866924181a787a9c551784e1beba9712f9f6fca00b1a

SHA512
bdaf47bf0f42be674e39eb41cf251481526d86330f0401b14020a9083ad059d4c33185ba5e79936c52f9ba09848c0d3829bfe30bdecb39951826efc1c2bce490

Download Submit
\??\PIPE\srvsvc
MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/1740-2-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-0-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

Filesize
4KB

Download
memory/1740-32-0x000007FEF5443000-0x000007FEF5444000-memory.dmp

Filesize
4KB

Download
memory/1740-33-0x000007FEF5440000-0x000007FEF5E2C000-memory.dmp

Filesize
9.9MB

Download
memory/1740-1-0x0000000000C30000-0x0000000000C44000-memory.dmp

Filesize
80KB

Download
memory/2128-37-0x0000000000170000-0x0000000000184000-memory.dmp

Filesize
80KB

Download
memory/2408-15-0x000000001B650000-0x000000001B932000-memory.dmp

Filesize
2.9MB

Download
memory/2408-16-0x0000000002290000-0x0000000002298000-memory.dmp

Filesize
32KB

Download
memory/2628-7-0x0000000001DF0000-0x0000000001E70000-memory.dmp

Filesize
512KB

Download
memory/2628-9-0x0000000002860000-0x0000000002868000-memory.dmp

Filesize
32KB

Download
memory/2628-8-0x000000001B6D0000-0x000000001B9B2000-memory.dmp

Filesize
2.9MB

Download
memory/3064-40-0x0000000001280000-0x0000000001294000-memory.dmp

Filesize
80KB

Download