asyncrat | 2056114bb62435e5b20fd1ed4a95169022f4d763a5abfe6f4af0cba6dbe58668

General

Target

ORDER-684486-895439.js
Size

563KB
MD5

ab0dac9d1b9b83383dbc5d469d5fa1ae
SHA1

b15b24f82ef0a07fce5b7c2735d8a8b46b547287
SHA256

398e3d3d2ad8e2e91693c1682780d2352ebe962b67547af5c20735ae97ea94a9
SHA512

66829799b8233f142aa1420f1e2dd4dfbdc3f2417279b12481d87612a0d97add61d819e58c369818ac201a4ba568e92d5fcd4b9ce17fb68332eeb5718f2f72fc
SSDEEP

3072:MCAFTI3Ws7WZ4hRPhts7YRw7Xx5FzNM6x/P0UHD2yQ/ry:MCAFs3F7WZIhe7nbDIxu

Score

10^/10

asyncrat wshrat march-25 discovery execution persistence rat trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

March-25

C2

chongmei33.publicvm.com:2703

chongmei33.publicvm.com:7031

umarmira055.duckdns.org:2703

umarmira055.duckdns.org:7031

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
WindowsUpdate.exe
install_folder
%Temp%

aes.plain

Extracted

Family

wshrat

C2

http://chongmei33.myddns.rocks:7044

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
WSHRAT
WSHRAT is a variant of Houdini worm and has vbs and js variants.
trojan wshrat
Wshrat family
wshrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x00070000000241f9-14.dat	family_asyncrat

Blocklisted process makes network request 26 IoCs

flow	pid	Process
6	3484	wscript.exe
26	3484	wscript.exe
30	3484	wscript.exe
37	3484	wscript.exe
38	3484	wscript.exe
41	3484	wscript.exe
49	3484	wscript.exe
62	3484	wscript.exe
66	3484	wscript.exe
67	3484	wscript.exe
68	3484	wscript.exe
75	3484	wscript.exe
76	3484	wscript.exe
77	3484	wscript.exe
78	3484	wscript.exe
79	3484	wscript.exe
82	3484	wscript.exe
83	3484	wscript.exe
84	3484	wscript.exe
87	3484	wscript.exe
88	3484	wscript.exe
89	3484	wscript.exe
90	3484	wscript.exe
91	3484	wscript.exe
92	3484	wscript.exe
93	3484	wscript.exe

Checks computer location settings 2 TTPs 4 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-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\Control Panel\International\Geo\Nation	RDo.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
5488	RDo.exe
1236	WindowsUpdate.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adobe = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\adobe.js\""	WScript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adobe = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\adobe.js\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adobe = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\adobe.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\adobe = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\adobe.js\""	wscript.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

System Location Discovery: System Language Discovery 1 TTPs 6 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

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WindowsUpdate.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RDo.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
5092	timeout.exe

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3446877943-4095308722-756223633-1000_Classes\Local Settings	wscript.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

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

persistence execution

Scheduled Task

T1053.005

pid	Process
2120	schtasks.exe

Script User-Agent 24 IoCs

Uses user-agent string associated with script host/environment.

description	flow	ioc
HTTP User-Agent header	26	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	62	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	67	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	83	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	88	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	38	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	78	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	82	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	89	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	93	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	30	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	37	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	41	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	66	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	68	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	84	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	91	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	6	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	49	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	77	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	79	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	87	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	90	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript
HTTP User-Agent header	92	WSHRAT\|E6F935F9\|VOEILKQD\|Admin\|Microsoft Windows 10 Pro\|plus\|nan-av\|false - 25/3/2025\|JavaScript

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe
5488	RDo.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5488	RDo.exe
Token: SeDebugPrivilege	1236	WindowsUpdate.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1680 wrote to memory of 1552	1680	wscript.exe	85
PID 1680 wrote to memory of 1552	1680	wscript.exe	85
PID 1680 wrote to memory of 2516	1680	wscript.exe	86
PID 1680 wrote to memory of 2516	1680	wscript.exe	86
PID 1552 wrote to memory of 3484	1552	WScript.exe	87
PID 1552 wrote to memory of 3484	1552	WScript.exe	87
PID 2516 wrote to memory of 5488	2516	WScript.exe	88
PID 2516 wrote to memory of 5488	2516	WScript.exe	88
PID 2516 wrote to memory of 5488	2516	WScript.exe	88
PID 5488 wrote to memory of 4704	5488	RDo.exe	96
PID 5488 wrote to memory of 4704	5488	RDo.exe	96
PID 5488 wrote to memory of 4704	5488	RDo.exe	96
PID 5488 wrote to memory of 3688	5488	RDo.exe	98
PID 5488 wrote to memory of 3688	5488	RDo.exe	98
PID 5488 wrote to memory of 3688	5488	RDo.exe	98
PID 4704 wrote to memory of 2120	4704	cmd.exe	100
PID 4704 wrote to memory of 2120	4704	cmd.exe	100
PID 4704 wrote to memory of 2120	4704	cmd.exe	100
PID 3688 wrote to memory of 5092	3688	cmd.exe	101
PID 3688 wrote to memory of 5092	3688	cmd.exe	101
PID 3688 wrote to memory of 5092	3688	cmd.exe	101
PID 3688 wrote to memory of 1236	3688	cmd.exe	103
PID 3688 wrote to memory of 1236	3688	cmd.exe	103
PID 3688 wrote to memory of 1236	3688	cmd.exe	103

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER-684486-895439.js
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1680
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adobe.js"
  2⤵
  - Checks computer location settings
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:1552
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\adobe.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    PID:3484
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\word.js"
  2⤵
  - Checks computer location settings
  - Suspicious use of WriteProcessMemory
  PID:2516
- - C:\Users\Admin\AppData\Local\Temp\RDo.exe
    "C:\Users\Admin\AppData\Local\Temp\RDo.exe"
    3⤵
    - Checks computer location settings
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:5488
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WindowsUpdate" /tr '"C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"' & exit
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:4704
    - - C:\Windows\SysWOW64\schtasks.exe
        
        schtasks /create /f /sc onlogon /rl highest /tn "WindowsUpdate" /tr '"C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"'
        5⤵
        System Location Discovery: System Language Discovery
        Scheduled Task/Job: Scheduled Task
        
        PID:2120
  - - C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4D26.tmp.bat""
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:3688
    - - C:\Windows\SysWOW64\timeout.exe
        
        timeout 3
        5⤵
        System Location Discovery: System Language Discovery
        Delays execution with timeout.exe
        
        PID:5092
    - - C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe
        
        "C:\Users\Admin\AppData\Local\Temp\WindowsUpdate.exe"
        5⤵
        Executes dropped EXE
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1236

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

JavaScript

1

T1059.007

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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\RDo.exe

Filesize
45KB

MD5
7e54eec2d10957178e6410ba1c899c21

SHA1
9f79b7ef7b24933b0b106a387fbf5834863dbc78

SHA256
d7d374d650d362b4a859f526189cda7ecdef9b0ee60267a1c65c3a9e1bcfd0f8

SHA512
e7cec2a67334c72e6476adb53bcb6de575f7c9513a49f0be7a7f6fb00b23ac070335b734631f024c411293cb09d0faa89bf7017837d65f5188884eabf853dd17

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

Filesize
305KB

MD5
294f1f4ee9bd1a410379ccc7430c7a69

SHA1
02436fc31c5fa37c3735dcff0f450c20e302e7a2

SHA256
f0cc3f5f26302ba2cd290d11052a42b4adc5401b953439d49723b666ac100187

SHA512
8a87e29348ef3bd4c1847a65ef9ffabedba4f51504512819df396123d90e7bf8e1b3e7edb1e4e33419a8d309e47cbaa2f7c3a9f387f6d987cedc4e048d479abd

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp4D26.tmp.bat

Filesize
160B

MD5
ec245efcf3a8bcf5809f94ad90789e9f

SHA1
0528dcd1b29b0d0ce77a064c95cdf280c9e5c4fe

SHA256
5de1bafad57bae5fdbf8b45525880b0acceb7af0f564a0509e57561339af12a4

SHA512
003f16bc2970678c1e77bab1fe13adf9f1289fd8bc4fe6612356947db17fb9b3337e3143f8c761bbba247780449f0bb7bfc97ee8225785b17d3d8530cd4b4004

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

Filesize
82KB

MD5
33d6e875441823e698ea8b8c4739dfd4

SHA1
a446695785e38522c923a5340e43c236ac332616

SHA256
32e6e9765b2e1e18699fdcc2817137b22f893457e2a10ae3f66081dd58f811ce

SHA512
633a462dba83497be30c969c1c637f144e1ff2bc741687326a53604bce93dd80af12acb49e546942978a2e629d6811b8612cd1362af5d41921ddae59b38977d2

Download Submit
memory/1236-38-0x0000000005EB0000-0x0000000006454000-memory.dmp

Filesize
5.6MB

Download
memory/1236-40-0x00000000059D0000-0x0000000005A36000-memory.dmp

Filesize
408KB

Download
memory/5488-25-0x0000000000110000-0x0000000000122000-memory.dmp

Filesize
72KB

Download
memory/5488-26-0x0000000004AC0000-0x0000000004B5C000-memory.dmp

Filesize
624KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads