asyncrat | 58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210

Resubmissions

03-12-2024 08:17

241203-j6wb3asnfr 10

29-11-2024 00:44

241129-a3t56awqcx 10

Analysis

max time kernel
149s
max time network
152s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
03-12-2024 08:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe
Size

372KB
MD5

f9646131ff6c7b07e435791522b418b0
SHA1

c0b1be54b2915cc9df1011836402e981a5815c92
SHA256

58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210
SHA512

44b54b19f35b3aca440eb09b8babdd3b22bc934145857b24a91b6fe65f1a6b2106a4a49266c55552135c63f8b8f85bc7a5e99d458cb277e2216ab2b20da089a5
SSDEEP

3072:uD/0ZYthTLJRMB4IVGubl4m5plDzGuX7i2me4F8lpo6wB408ko/Z5hwy6q//kgrh:PYth1RiVGubCYfacu2tB3oB40zox4cf

Score

10^/10

asyncrat vjw0rm xworm default execution persistence rat trojan worm

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

Default

178.215.224.142:4449

Mutex

ywldammnmlcvkfaatp

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Extracted

Family

xworm

Version

5.0

xworm7000.duckdns.org:7000

178.215.224.142:7000

Mutex

wDluQlkCVEcAclIo

Attributes

Install_directory
%AppData%
install_file
USB.exe

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat

Detect Xworm Payload 2 IoCs

Processes:

resource	yara_rule
behavioral2/files/0x000a000000023b73-51.dat	family_xworm
behavioral2/memory/3596-60-0x0000000000400000-0x0000000000410000-memory.dmp	family_xworm

Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
Vjw0rm family
vjw0rm
Xworm
Xworm is a remote access trojan written in C#.
trojan rat xworm
Xworm family
xworm

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral2/files/0x000a000000023b72-39.dat	family_asyncrat

Blocklisted process makes network request 15 IoCs

Processes:

WScript.exe

flow	pid	Process
15	648	WScript.exe
29	648	WScript.exe
40	648	WScript.exe
63	648	WScript.exe
70	648	WScript.exe
80	648	WScript.exe
90	648	WScript.exe
98	648	WScript.exe
106	648	WScript.exe
120	648	WScript.exe
128	648	WScript.exe
137	648	WScript.exe
144	648	WScript.exe
153	648	WScript.exe
162	648	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:

58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exeUnder Faxuler.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	Under Faxuler.exe

Drops startup file 4 IoCs

Processes:

WScript.exeXClient.exe

description	ioc	Process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\info.js	WScript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\info.js	WScript.exe
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.lnk	XClient.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\windows.lnk	XClient.exe

Executes dropped EXE 5 IoCs

Processes:

Under Faxuler.exe0wazE.exeClient.exeXClient.exe0wazE.exe

pid	Process
1264	Under Faxuler.exe
1008	0wazE.exe
3948	Client.exe
3596	XClient.exe
4044	0wazE.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

WScript.exeXClient.exe

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\KNNEIOX550 = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\info.js\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\windows = "C:\\Users\\Admin\\AppData\\Roaming\\windows"	XClient.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

Modifies registry class 1 IoCs

Processes:

Under Faxuler.exe

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000_Classes\Local Settings	Under Faxuler.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

Client.exeXClient.exe

pid	Process
3948	Client.exe
3948	Client.exe
3596	XClient.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe
3948	Client.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

0wazE.exeClient.exeXClient.exe0wazE.exe

description	pid	Process
Token: SeDebugPrivilege	1008	0wazE.exe
Token: SeDebugPrivilege	3948	Client.exe
Token: SeDebugPrivilege	3596	XClient.exe
Token: SeDebugPrivilege	4044	0wazE.exe

Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

Client.exeXClient.exe

pid	Process
3948	Client.exe
3596	XClient.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exeUnder Faxuler.exe

description	pid	Process	procid_target
PID 4560 wrote to memory of 1264	4560	58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe	83
PID 4560 wrote to memory of 1264	4560	58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe	83
PID 4560 wrote to memory of 1008	4560	58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe	84
PID 4560 wrote to memory of 1008	4560	58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe	84
PID 1264 wrote to memory of 648	1264	Under Faxuler.exe	91
PID 1264 wrote to memory of 648	1264	Under Faxuler.exe	91
PID 1264 wrote to memory of 3948	1264	Under Faxuler.exe	92
PID 1264 wrote to memory of 3948	1264	Under Faxuler.exe	92
PID 1264 wrote to memory of 3596	1264	Under Faxuler.exe	93
PID 1264 wrote to memory of 3596	1264	Under Faxuler.exe	93
PID 1264 wrote to memory of 4044	1264	Under Faxuler.exe	94
PID 1264 wrote to memory of 4044	1264	Under Faxuler.exe	94

C:\Users\Admin\AppData\Local\Temp\58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe
"C:\Users\Admin\AppData\Local\Temp\58cea87c2baf7227f19f5895064efcc7a410cc64f809648d79aabe4a1e7ea210N.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4560
- C:\Users\Admin\AppData\Local\Temp\Under Faxuler.exe
  "C:\Users\Admin\AppData\Local\Temp\Under Faxuler.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\info.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    PID:648
- - C:\Users\Admin\AppData\Local\Temp\Client.exe
    "C:\Users\Admin\AppData\Local\Temp\Client.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3948
- - C:\Users\Admin\AppData\Local\Temp\XClient.exe
    "C:\Users\Admin\AppData\Local\Temp\XClient.exe"
    3⤵
    - Drops startup file
    - Executes dropped EXE
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    PID:3596
- - C:\Users\Admin\AppData\Local\Temp\0wazE.exe
    "C:\Users\Admin\AppData\Local\Temp\0wazE.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:4044
- C:\Users\Admin\AppData\Local\Temp\0wazE.exe
  "C:\Users\Admin\AppData\Local\Temp\0wazE.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

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

C:\Users\Admin\AppData\Local\Temp\0wazE.exe

Filesize
105KB

MD5
e264fe3d12c6e1a0f1d7e9ed2261e92d

SHA1
7a0e223c6ee4da81b80f49cbe6a602b2b354b1ab

SHA256
1a4bb157823139eff9b0bedce2a9452759ecc47801785743fb9667647347c4d5

SHA512
8a7ff7c1cf941aa10641650056f71da6974984c7383dade8683d7fd24e1ebd078da76dcc622238594fd53295205753c59364a64eaa67f3a2ea8734e679533209

Download Submit
C:\Users\Admin\AppData\Local\Temp\Client.exe

Filesize
74KB

MD5
0443ba1255e5419d79b3ed3382ec00ff

SHA1
f8dcda47375189f3164fc8419f84fa92674e4710

SHA256
9c238fa3c048bab6d3e72f171d2b3994ac1686477a4febdcb2fa7a8fa987c6f6

SHA512
d10064412a09576ffc9b5e2d22a0ca97a65f70f19e80c3494c2c9e422a36169e13ac72a9d948308d3aa3ccedb03998996611963de71eeca05a0607beaa199374

Download Submit
C:\Users\Admin\AppData\Local\Temp\Under Faxuler.exe

Filesize
687KB

MD5
7beac06d9c9dc95b8dacd72d6ea87597

SHA1
ccc9ef68f1781a7c5d2c9cc4ac57198698ec418e

SHA256
be0986c1154533a6fa8ae0eb77c0f6c95ff5a153dd096b408888816f71fef835

SHA512
04ff58b844a687aadb5f4243ef5431619b02036abb29768d77ca309039adb1505ff62853be6bae4c238e55a9645a916912d85445147652ff0cd7b3d35e80798f

Download Submit
C:\Users\Admin\AppData\Local\Temp\XClient.exe

Filesize
38KB

MD5
789f782e9e3170fdbc5f69ad90f1fd54

SHA1
3e679929bc157c5a3f590ad15a9218c99fc2c1d3

SHA256
563760d0e6a3933465fe1021323e33d82e16f91a7cd71abd3afae862af2ad338

SHA512
5336464c17e4aa31b488f56025da479763c9292bd5fb354512d02c937c577494303fd0fee325ef25333f96839889f51bfbf4db0f98b42a22ee30613d96baf152

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

Filesize
3KB

MD5
c9f85ebe8ae38f1bf04be9d4ebe82219

SHA1
c72eeed1d5814247196b0c9935f6fa86c010e4c6

SHA256
c0157ee7368a626b38657229ddd1e58d058e571fc83977c26a2f511c15197e37

SHA512
5ba0756ac069a4c1b5d6d1fe47a20916494bbbd076dbce05d7eae6f17330a350b00903e4f7ffdb8b98ad3aa96e7b66913bef3b0c4cfc43a8219aa93613948ae8

Download Submit
memory/1008-29-0x0000000000550000-0x0000000000570000-memory.dmp

Filesize
128KB

Download
memory/1008-31-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download
memory/1008-66-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download
memory/1264-27-0x0000000002790000-0x00000000027D6000-memory.dmp

Filesize
280KB

Download
memory/1264-28-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download
memory/1264-25-0x0000000000550000-0x0000000000602000-memory.dmp

Filesize
712KB

Download
memory/1264-63-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download
memory/3596-60-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/3948-56-0x00000000002C0000-0x00000000002D8000-memory.dmp

Filesize
96KB

Download
memory/4560-30-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download
memory/4560-1-0x0000000000420000-0x0000000000482000-memory.dmp

Filesize
392KB

Download
memory/4560-0-0x00007FF9CFC03000-0x00007FF9CFC05000-memory.dmp

Filesize
8KB

Download
memory/4560-3-0x00007FF9CFC00000-0x00007FF9D06C1000-memory.dmp

Filesize
10.8MB

Download