xworm | e1ea405efb08d4a7d254423fc5b700021eb653b1545d120c0f6cf4ff31c7f0ae

Resubmissions

02/05/2024, 02:59

240502-dg26eshb97 10

02/05/2024, 02:36

240502-c3k9csef7t 10

Analysis

max time kernel
299s
max time network
302s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
02/05/2024, 02:59

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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 5 IoCs

resource	yara_rule
behavioral19/memory/2240-1-0x0000000000BD0000-0x0000000000BE6000-memory.dmp	family_xworm
behavioral19/files/0x000d0000000122d1-11.dat	family_xworm
behavioral19/memory/2400-13-0x0000000000AA0000-0x0000000000AB6000-memory.dmp	family_xworm
behavioral19/memory/1592-15-0x00000000013A0000-0x00000000013B6000-memory.dmp	family_xworm
behavioral19/memory/884-18-0x0000000000130000-0x0000000000146000-memory.dmp	family_xworm

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

Drops startup file 2 IoCs

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 9 IoCs

pid	Process
2400	uwumonster.exe
1592	uwumonster.exe
1804	uwumonster.exe
884	uwumonster.exe
2516	nznius.exe
2492	nznius.exe
2528	nznius.exe
2412	nznius.exe
2420	nznius.exe

Loads dropped DLL 4 IoCs

pid	Process
2516	nznius.exe
2516	nznius.exe
2516	nznius.exe
2516	nznius.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-330940541-141609230-1670313778-1000\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

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task/Job

T1053

pid	Process
2136	schtasks.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	2400	uwumonster.exe
Token: SeDebugPrivilege	1592	uwumonster.exe
Token: SeDebugPrivilege	1804	uwumonster.exe
Token: SeDebugPrivilege	884	uwumonster.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 2136	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2240 wrote to memory of 2136	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2240 wrote to memory of 2136	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2020 wrote to memory of 2400	2020	taskeng.exe	34
PID 2020 wrote to memory of 2400	2020	taskeng.exe	34
PID 2020 wrote to memory of 2400	2020	taskeng.exe	34
PID 2020 wrote to memory of 1592	2020	taskeng.exe	35
PID 2020 wrote to memory of 1592	2020	taskeng.exe	35
PID 2020 wrote to memory of 1592	2020	taskeng.exe	35
PID 2020 wrote to memory of 1804	2020	taskeng.exe	36
PID 2020 wrote to memory of 1804	2020	taskeng.exe	36
PID 2020 wrote to memory of 1804	2020	taskeng.exe	36
PID 2020 wrote to memory of 884	2020	taskeng.exe	37
PID 2020 wrote to memory of 884	2020	taskeng.exe	37
PID 2020 wrote to memory of 884	2020	taskeng.exe	37
PID 2240 wrote to memory of 2516	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	38
PID 2240 wrote to memory of 2516	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	38
PID 2240 wrote to memory of 2516	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	38
PID 2240 wrote to memory of 2516	2240	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	38
PID 2516 wrote to memory of 2492	2516	nznius.exe	39
PID 2516 wrote to memory of 2492	2516	nznius.exe	39
PID 2516 wrote to memory of 2492	2516	nznius.exe	39
PID 2516 wrote to memory of 2492	2516	nznius.exe	39
PID 2516 wrote to memory of 2528	2516	nznius.exe	40
PID 2516 wrote to memory of 2528	2516	nznius.exe	40
PID 2516 wrote to memory of 2528	2516	nznius.exe	40
PID 2516 wrote to memory of 2528	2516	nznius.exe	40
PID 2516 wrote to memory of 2412	2516	nznius.exe	41
PID 2516 wrote to memory of 2412	2516	nznius.exe	41
PID 2516 wrote to memory of 2412	2516	nznius.exe	41
PID 2516 wrote to memory of 2412	2516	nznius.exe	41
PID 2516 wrote to memory of 2420	2516	nznius.exe	42
PID 2516 wrote to memory of 2420	2516	nznius.exe	42
PID 2516 wrote to memory of 2420	2516	nznius.exe	42
PID 2516 wrote to memory of 2420	2516	nznius.exe	42

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:2240
- 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⤵
  - Creates scheduled task(s)
  PID:2136
- C:\Users\Admin\AppData\Local\Temp\nznius.exe
  "C:\Users\Admin\AppData\Local\Temp\nznius.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /watchdog
    3⤵
    - Executes dropped EXE
    PID:2492
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /watchdog
    3⤵
    - Executes dropped EXE
    PID:2528
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /watchdog
    3⤵
    - Executes dropped EXE
    PID:2412
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /watchdog
    3⤵
    - Executes dropped EXE
    PID:2420
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /watchdog
    3⤵
    PID:1156
- - C:\Users\Admin\AppData\Local\Temp\nznius.exe
    "C:\Users\Admin\AppData\Local\Temp\nznius.exe" /main
    3⤵
    PID:1008
  - - C:\Windows\SysWOW64\notepad.exe
      "C:\Windows\System32\notepad.exe" \note.txt
      4⤵
      PID:1368

C:\Windows\system32\taskeng.exe
taskeng.exe {364C8F6C-B29C-4897-9592-7CF1BCD9162F} S-1-5-21-330940541-141609230-1670313778-1000:KXIPPCKF\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2020
- C:\Users\Admin\AppData\Local\uwumonster.exe
  C:\Users\Admin\AppData\Local\uwumonster.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2400
- C:\Users\Admin\AppData\Local\uwumonster.exe
  C:\Users\Admin\AppData\Local\uwumonster.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1592
- C:\Users\Admin\AppData\Local\uwumonster.exe
  C:\Users\Admin\AppData\Local\uwumonster.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1804
- C:\Users\Admin\AppData\Local\uwumonster.exe
  C:\Users\Admin\AppData\Local\uwumonster.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\nznius.exe

Filesize
16KB

MD5
1d5ad9c8d3fee874d0feb8bfac220a11

SHA1
ca6d3f7e6c784155f664a9179ca64e4034df9595

SHA256
3872c12d31fc9825e8661ac01ecee2572460677afbc7093f920a8436a42e28ff

SHA512
c8246f4137416be33b6d1ac89f2428b7c44d9376ac8489a9fbf65ef128a6c53fb50479e1e400c8e201c8611992ab1d6c1bd3d6cece89013edb4d35cdd22305b1

Download Submit
C:\Users\Admin\AppData\Local\uwumonster.exe

Filesize
63KB

MD5
222c2d239f4c8a1d73c736c9cc712807

SHA1
c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c

SHA256
ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d

SHA512
1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02

Download Submit
C:\note.txt

Filesize
218B

MD5
afa6955439b8d516721231029fb9ca1b

SHA1
087a043cc123c0c0df2ffadcf8e71e3ac86bbae9

SHA256
8e9f20f6864c66576536c0b866c6ffdcf11397db67fe120e972e244c3c022270

SHA512
5da21a31fbc4e8250dffed30f66b896bdf007ac91948140334fe36a3f010e1bac3e70a07e9f3eb9da8633189091fd5cadcabbaacd3e01da0fe7ae28a11b3dddf

Download Submit
memory/884-18-0x0000000000130000-0x0000000000146000-memory.dmp

Filesize
88KB

Download
memory/1592-15-0x00000000013A0000-0x00000000013B6000-memory.dmp

Filesize
88KB

Download
memory/2240-0-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/2240-1-0x0000000000BD0000-0x0000000000BE6000-memory.dmp

Filesize
88KB

Download
memory/2240-6-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2240-7-0x000007FEF5F83000-0x000007FEF5F84000-memory.dmp

Filesize
4KB

Download
memory/2240-8-0x000007FEF5F80000-0x000007FEF696C000-memory.dmp

Filesize
9.9MB

Download
memory/2400-13-0x0000000000AA0000-0x0000000000AB6000-memory.dmp

Filesize
88KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads