xworm | ff84d777db298c70e206a94f1a4a1a5d5536d8cd42eedbd50ffde364daa368a6

General

Target

ORDER24930067548.js
Size

7KB
MD5

8fbf57ab035ec7063b9522e5f30a75f7
SHA1

cd761463221ba82f46b2b28fe56a0e74588c64b9
SHA256

ff84d777db298c70e206a94f1a4a1a5d5536d8cd42eedbd50ffde364daa368a6
SHA512

6fb68c7241c130973c1332a2f1c23c76cdb4640d76e270e1a0538a83001fe7d2aa4397ccb34def80ce88a5050f36d7bbaad7700fd9efa666c26bb0e6c4bc71d6
SSDEEP

96:lUu0CRu5u37arzWruLprCRuzrN+uQ6rgxX4murNdgCRufZQL76mXHNuipdWwp5i6:lUycqnDtjfQxaWpK+l

Score

10^/10

xworm discovery execution persistence rat trojan

Malware Config

Extracted

Family

xworm

Version

5.0

C2

as525795.duckdns.org:6980

194.37.97.150:6980

Mutex

wtYmVE2WY2XGhWlO

Attributes

install_file
adobe.exe

aes.plain

Signatures

Detect Xworm Payload 1 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4128-19-0x0000000000400000-0x0000000000412000-memory.dmp	family_xworm

Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Blocklisted process makes network request 1 IoCs

Processes:

wscript.exe

flow pid process

3 740 wscript.exe

flow	pid	process
3	740	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exeWScript.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	WScript.exe

Executes dropped EXE 2 IoCs

Processes:

GeUT.exeGeUT.exe

pid process

4004 GeUT.exe
4128 GeUT.exe

pid	process
4004	GeUT.exe
4128	GeUT.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

GeUT.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\AppData\\Roaming\\Service.exe"	GeUT.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows = "C:\\Users\\Admin\\AppData\\Local\\Temp\\GeUT.exe"	GeUT.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

GeUT.exe

description pid process target process

PID 4004 set thread context of 4128 4004 GeUT.exe GeUT.exe
Command and Scripting Interpreter: JavaScript 1 TTPs
execution

JavaScript
T1059.007
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

description	pid	process	target process
PID 4004 set thread context of 4128	4004	GeUT.exe	GeUT.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

Processes:

GeUT.exeGeUT.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GeUT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	GeUT.exe

Modifies registry class 1 IoCs

Processes:

wscript.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings wscript.exe
Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

GeUT.exe

pid process

4128 GeUT.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

GeUT.exe

pid process

4128 GeUT.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

GeUT.exe

description pid process

Token: SeDebugPrivilege 4128 GeUT.exe
Token: SeDebugPrivilege 4128 GeUT.exe
Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

GeUT.exe

pid process

4128 GeUT.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000_Classes\Local Settings	wscript.exe

pid	process
4128	GeUT.exe

pid	process
4128	GeUT.exe

description	pid	process
Token: SeDebugPrivilege	4128	GeUT.exe
Token: SeDebugPrivilege	4128	GeUT.exe

pid	process
4128	GeUT.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

wscript.exeWScript.exeGeUT.exe

description	pid	process	target process
PID 740 wrote to memory of 1752	740	wscript.exe	WScript.exe
PID 740 wrote to memory of 1752	740	wscript.exe	WScript.exe
PID 1752 wrote to memory of 4004	1752	WScript.exe	GeUT.exe
PID 1752 wrote to memory of 4004	1752	WScript.exe	GeUT.exe
PID 1752 wrote to memory of 4004	1752	WScript.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe
PID 4004 wrote to memory of 4128	4004	GeUT.exe	GeUT.exe

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER24930067548.js
1⤵
- Blocklisted process makes network request
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:740
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\OLWJMU.js"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:1752
- - C:\Users\Admin\AppData\Local\Temp\GeUT.exe
    "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
    3⤵
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:4004
  - - C:\Users\Admin\AppData\Local\Temp\GeUT.exe
      "C:\Users\Admin\AppData\Local\Temp\GeUT.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious behavior: AddClipboardFormatListener
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4128

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4152,i,3387628439405076340,17957358341235678872,262144 --variations-seed-version --mojo-platform-channel-handle=4180 /prefetch:8
1⤵
PID:3464

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
58KB

MD5
7284765ca4d2f85c487796f437b01822

SHA1
f1e51f7e021629857369888a16e201fb464b7a61

SHA256
680ed672969ac8f7d533b74b27b152f4608ef9bba02f48935829455190b1e996

SHA512
17d1df0df786d7bfff9ee7618ea0cc442804b03bd6f35f13f8bbe6dd7ffa581c663d724989038a163d9b3b116eedef198ee084a87b6e799a4c97984304469b32

Download Submit
C:\Users\Admin\AppData\Local\Temp\OLWJMU.js

Filesize
1.6MB

MD5
c63888086e1646654a1e162fde69c0ff

SHA1
8580dafbffe4d9b0d7e122127a455682ad2bd30e

SHA256
262fb2e45f9b66956236f89f4cbeac22ee3d011832263a28ed7f632a22ae87d7

SHA512
df2212775d03605673e6420ef74ec6c99fcdbf7e1dde3287c97c634553f66fd084e0f38549134ec9e0fb8cef4033be92013a430aa7955f0c691f7edff02fcb66

Download Submit
memory/4004-16-0x0000000000070000-0x0000000000084000-memory.dmp

Filesize
80KB

Download
memory/4004-17-0x0000000004F60000-0x0000000005504000-memory.dmp

Filesize
5.6MB

Download
memory/4004-18-0x0000000004990000-0x0000000004998000-memory.dmp

Filesize
32KB

Download
memory/4128-19-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/4128-23-0x0000000004D60000-0x0000000004DFC000-memory.dmp

Filesize
624KB

Download
memory/4128-24-0x0000000005380000-0x0000000005412000-memory.dmp

Filesize
584KB

Download
memory/4128-25-0x0000000006360000-0x000000000636A000-memory.dmp

Filesize
40KB

Download
memory/4128-26-0x0000000006CB0000-0x0000000006D16000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads