xworm | e1ea405efb08d4a7d254423fc5b700021eb653b1545d120c0f6cf4ff31c7f0ae

Analysis

max time kernel
835s
max time network
836s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
01/06/2024, 07:45

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
a ton of ya/ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Size 63KB
Sample240601-jlvj2aed5s
SHA256 ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
MD5 222c2d239f4c8a1d73c736c9cc712807
SHA1 c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c
SHA512 1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02
SSDEEP 1536:tJc/5q1qoR5PDdAZcIED4VuCkbFybjQ9f0jQRmONww+W:7c/iqoJekbFEQ9W+mONP+W
MD5 SHA1 SHA512 SSDEEP

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 3 IoCs

resource	yara_rule
behavioral3/memory/2328-1-0x0000000000C90000-0x0000000000CA6000-memory.dmp	family_xworm
behavioral3/files/0x000c000000015cbd-9.dat	family_xworm
behavioral3/memory/2628-11-0x0000000001330000-0x0000000001346000-memory.dmp	family_xworm

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

Deletes itself 1 IoCs

pid	Process
1912	cmd.exe

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 1 IoCs

pid	Process
2628	uwumonster.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-1-5-21-2248906074-2862704502-246302768-1000\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
2544	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1488	timeout.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe
Token: SeDebugPrivilege	2628	uwumonster.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2328 wrote to memory of 2544	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2328 wrote to memory of 2544	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2328 wrote to memory of 2544	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	28
PID 2736 wrote to memory of 2628	2736	taskeng.exe	31
PID 2736 wrote to memory of 2628	2736	taskeng.exe	31
PID 2736 wrote to memory of 2628	2736	taskeng.exe	31
PID 2328 wrote to memory of 1588	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	35
PID 2328 wrote to memory of 1588	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	35
PID 2328 wrote to memory of 1588	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	35
PID 2328 wrote to memory of 1912	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	37
PID 2328 wrote to memory of 1912	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	37
PID 2328 wrote to memory of 1912	2328	ya - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy - Copy -.exe	37
PID 1912 wrote to memory of 1488	1912	cmd.exe	39
PID 1912 wrote to memory of 1488	1912	cmd.exe	39
PID 1912 wrote to memory of 1488	1912	cmd.exe	39

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:2328
- 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:2544
- C:\Windows\System32\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /delete /f /tn "uwumonster"
  2⤵
  PID:1588
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp190C.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1912
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1488

C:\Windows\system32\taskeng.exe
taskeng.exe {C48E9E42-4168-49EA-A91C-1C4ABA2A310C} S-1-5-21-2248906074-2862704502-246302768-1000:GHPZRGFC\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Users\Admin\AppData\Local\uwumonster.exe
  C:\Users\Admin\AppData\Local\uwumonster.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2628

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

Replay Monitor

Loading Replay Monitor...

Downloads

tmp190C.tmp.bat

Path C:\Users\Admin\AppData\Local\Temp\tmp190C.tmp.bat
Size 252B
SHA256 94a6893e24452fa9cfff00d4c311cb3880b23ff692f733f40aaca4248b225108
MD5 6d2a1d0590cb9f51360dec08d25d89a4
SHA1 622633bf0cb59eeb332b5bc7ac277d32212bb042
SHA512 fbe28c1454d68eea93540d0891d66d14262009e626a2213dd2287cdcc07cf2a1f84757b2746d88436bacfc256be5a7dbdf80b561b1c207edfced8bb0f2f27bf6
MD5 SHA1 SHA512

Submit Download

uwumonster.exe

Path C:\Users\Admin\AppData\Local\uwumonster.exe
Size 63KB
SHA256 ff43049677c57277f12a1d97f02af3029d7b75b5ad40303a28f1b0452997969d
MD5 222c2d239f4c8a1d73c736c9cc712807
SHA1 c3aa61bd6f8cc640bcfa74c40d9283c9c08c7b3c
SHA512 1f2fea85e45e93916306c234b916d6b4b200dac9656e44f4555f825dd8677cb5e927bd5e7a74bf2fb2f6972a3e6e2d294a6104add162ba3d53a0e6cfedef6a02
SSDEEP 1536:tJc/5q1qoR5PDdAZcIED4VuCkbFybjQ9f0jQRmONww+W:7c/iqoJekbFEQ9W+mONP+W
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/2328-0-0x000007FEF5AA3000-0x000007FEF5AA4000-memory.dmp

Download

memory/2328-1-0x0000000000C90000-0x0000000000CA6000-memory.dmp

Download

memory/2328-6-0x000007FEF5AA0000-0x000007FEF648C000-memory.dmp

Download

memory/2328-7-0x000007FEF5AA3000-0x000007FEF5AA4000-memory.dmp

Download

memory/2328-12-0x000007FEF5AA0000-0x000007FEF648C000-memory.dmp

Download

memory/2328-24-0x000007FEF5AA0000-0x000007FEF648C000-memory.dmp

Download

memory/2628-11-0x0000000001330000-0x0000000001346000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads