xworm | e1ea405efb08d4a7d254423fc5b700021eb653b1545d120c0f6cf4ff31c7f0ae

Analysis

max time kernel
587s
max time network
592s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
01-07-2024 04:09

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General

Target

a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Size

63KB
MD5

222c2d239f4c8a1d73c736c9cc712807
SHA1

c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c
SHA256

ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
SHA512

1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02
SSDEEP

1536:tJc/5q1qoR5PDdAZcIED4VuCkbFybjQ9f0jQRmONww+W:7c/iqoJekbFEQ9W+mONP+W

Score

10^/10

xworm persistence rat trojan

Malware Config

Extracted

Family

xworm

127.0.0.1:23638

209.25.140.1:5525:23638

bring-recorder.gl.at.ply.gg:23638

action-yesterday.gl.at.ply.gg:23638

147.185.221.19:23638

then-wheel.gl.at.ply.gg::23638

then-wheel.gl.at.ply.gg:23638

teen-modes.gl.at.ply.gg:23638

Attributes

Install_directory
%LocalAppData%
install_file
uwumonster.exe

Signatures

Detect Xworm Payload 9 IoCs

Processes:

resource	yara_rule
behavioral31/memory/1216-1-0x0000000000F60000-0x0000000000F76000-memory.dmp	family_xworm
C:\Users\Admin\AppData\Local\uwumonster.exe	family_xworm
behavioral31/memory/2724-10-0x0000000000C80000-0x0000000000C96000-memory.dmp	family_xworm
behavioral31/memory/1800-15-0x0000000000DF0000-0x0000000000E06000-memory.dmp	family_xworm
behavioral31/memory/308-18-0x00000000003E0000-0x00000000003F6000-memory.dmp	family_xworm
behavioral31/memory/3004-20-0x00000000003D0000-0x00000000003E6000-memory.dmp	family_xworm
behavioral31/memory/1336-22-0x0000000000380000-0x0000000000396000-memory.dmp	family_xworm
behavioral31/memory/1848-24-0x0000000000F30000-0x0000000000F46000-memory.dmp	family_xworm
behavioral31/memory/1760-27-0x0000000000FF0000-0x0000000001006000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

Processes:

ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe

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

Executes dropped EXE 10 IoCs

Processes:

uwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exe

pid process

2724 uwumonster.exe
1800 uwumonster.exe
1248 uwumonster.exe
308 uwumonster.exe
3004 uwumonster.exe
1336 uwumonster.exe
1848 uwumonster.exe
3024 uwumonster.exe
1760 uwumonster.exe
2136 uwumonster.exe

pid	process
2724	uwumonster.exe
1800	uwumonster.exe
1248	uwumonster.exe
308	uwumonster.exe
3004	uwumonster.exe
1336	uwumonster.exe
1848	uwumonster.exe
3024	uwumonster.exe
1760	uwumonster.exe
2136	uwumonster.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-268080393-3149932598-1824759070-1000\Software\Microsoft\Windows\CurrentVersion\Run\uwumonster = "C:\\Users\\Admin\\AppData\\Local\\uwumonster.exe"	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe

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

2204 schtasks.exe

pid	process
2204	schtasks.exe

Suspicious use of AdjustPrivilegeToken 12 IoCs

Processes:

ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exeuwumonster.exe

description	pid	process
Token: SeDebugPrivilege	1216	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	1216	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	2724	uwumonster.exe
Token: SeDebugPrivilege	1800	uwumonster.exe
Token: SeDebugPrivilege	1248	uwumonster.exe
Token: SeDebugPrivilege	308	uwumonster.exe
Token: SeDebugPrivilege	3004	uwumonster.exe
Token: SeDebugPrivilege	1336	uwumonster.exe
Token: SeDebugPrivilege	1848	uwumonster.exe
Token: SeDebugPrivilege	3024	uwumonster.exe
Token: SeDebugPrivilege	1760	uwumonster.exe
Token: SeDebugPrivilege	2136	uwumonster.exe

Suspicious use of WriteProcessMemory 33 IoCs

Processes:

ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exetaskeng.exe

description	pid	process	target process
PID 1216 wrote to memory of 2204	1216	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	schtasks.exe
PID 1216 wrote to memory of 2204	1216	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	schtasks.exe
PID 1216 wrote to memory of 2204	1216	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	schtasks.exe
PID 1680 wrote to memory of 2724	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 2724	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 2724	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1800	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1800	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1800	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1248	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1248	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1248	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 308	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 308	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 308	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3004	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3004	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3004	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1336	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1336	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1336	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1848	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1848	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1848	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3024	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3024	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 3024	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1760	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1760	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 1760	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 2136	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 2136	1680	taskeng.exe	uwumonster.exe
PID 1680 wrote to memory of 2136	1680	taskeng.exe	uwumonster.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\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
"C:\Users\Admin\AppData\Local\Temp\a ton of ya\ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe"
1⤵
- Drops startup file
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1216

C:\Windows\System32\schtasks.exe
"C:\Windows\System32\schtasks.exe" /create /f /RL HIGHEST /sc minute /mo 1 /tn "uwumonster" /tr "C:\Users\Admin\AppData\Local\uwumonster.exe"
2⤵
- Scheduled Task/Job: Scheduled Task
PID:2204

C:\Windows\system32\taskeng.exe
taskeng.exe {EBD7AA2E-3C08-4D02-904C-DB76B2CF721C} S-1-5-21-268080393-3149932598-1824759070-1000:UHRQKJCP\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:1680

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2724

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1800

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1248

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:308

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3004

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1336

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1848

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:3024

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1760

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
2⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2136

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads

C:\Users\Admin\AppData\Local\uwumonster.exe
Filesize
63KB

MD5
222c2d239f4c8a1d73c736c9cc712807

SHA1
c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c

SHA256
ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d

SHA512
1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02

Download Submit
memory/308-18-0x00000000003E0000-0x00000000003F6000-memory.dmp

Filesize
88KB

Download
memory/1216-12-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

Filesize
9.9MB

Download
memory/1216-6-0x000007FEF5F70000-0x000007FEF695C000-memory.dmp

Filesize
9.9MB

Download
memory/1216-11-0x000007FEF5F73000-0x000007FEF5F74000-memory.dmp

Filesize
4KB

Download
memory/1216-0-0x000007FEF5F73000-0x000007FEF5F74000-memory.dmp

Filesize
4KB

Download
memory/1216-1-0x0000000000F60000-0x0000000000F76000-memory.dmp

Filesize
88KB

Download
memory/1336-22-0x0000000000380000-0x0000000000396000-memory.dmp

Filesize
88KB

Download
memory/1760-27-0x0000000000FF0000-0x0000000001006000-memory.dmp

Filesize
88KB

Download
memory/1800-15-0x0000000000DF0000-0x0000000000E06000-memory.dmp

Filesize
88KB

Download
memory/1848-24-0x0000000000F30000-0x0000000000F46000-memory.dmp

Filesize
88KB

Download
memory/2724-10-0x0000000000C80000-0x0000000000C96000-memory.dmp

Filesize
88KB

Download
memory/3004-20-0x00000000003D0000-0x00000000003E6000-memory.dmp

Filesize
88KB

Download