asyncrat | 1d7c22396b5d7fd7e169f2a676d6d934ac8b957e9cab956d3d51ce09460392a3

Analysis

max time kernel
147s
max time network
153s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
21-11-2024 05:33

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General

Target

ORDER-2411210684CAV.XLS.js
Size

5.8MB
MD5

0e9a4efd656e8f726c99639a15b46afa
SHA1

83c3929d2d526e96b6eab13dbeca60511720ccac
SHA256

17c8a2339fd77b428d7802f12bb967d6bef393b0c16da336126506c8f83c750e
SHA512

a67d35216768dea1aeac8519861879814abcded338a9368e1a53ac6dcb0788e81ca3bef3dd9258e3a02fd52297cbc8558f7801c62e65b1fd1578c80b46365f83
SSDEEP

49152:fyW+X3Bcfv+0oelkeQ74+Tey2Gxj7ReW+q4HXZhCrtwzXltdHRe:8

Score

10^/10

asyncrat wshrat default-nov-24 discovery execution persistence rat trojan

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default-NOV-24

chongmei33.publicvm.com:2703

chongmei33.publicvm.com:7031

jinvestments.duckdns.org:2703

jinvestments.duckdns.org:7031

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_file
Windows Update.exe
install_folder
%AppData%

aes.plain

Extracted

Family

wshrat

http://chongmei33.publicvm.com: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

Blocklisted process makes network request 21 IoCs

flow	pid	Process
5	2108	wscript.exe
6	2108	wscript.exe
7	2108	wscript.exe
9	2108	wscript.exe
10	2108	wscript.exe
15	2108	wscript.exe
16	2108	wscript.exe
18	2108	wscript.exe
19	2108	wscript.exe
20	2108	wscript.exe
22	2108	wscript.exe
23	2108	wscript.exe
24	2108	wscript.exe
26	2108	wscript.exe
27	2108	wscript.exe
28	2108	wscript.exe
30	2108	wscript.exe
31	2108	wscript.exe
32	2108	wscript.exe
34	2108	wscript.exe
35	2108	wscript.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

execution

PowerShell

T1059.001

pid	Process
1968	powershell.exe
1940	powershell.exe

Drops startup file 2 IoCs

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

Executes dropped EXE 2 IoCs

pid	Process
2268	CZQi.exe
1756	CZQi.exe

Loads dropped DLL 1 IoCs

pid	Process
2268	CZQi.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\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	WScript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	wscript.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1846800975-3917212583-2893086201-1000\Software\Microsoft\Windows\CurrentVersion\Run\word = "wscript.exe //B \"C:\\Users\\Admin\\AppData\\Roaming\\word.js\""	WScript.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2268 set thread context of 1756	2268	CZQi.exe	43

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 5 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	CZQi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	CZQi.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
1976	schtasks.exe

Script User-Agent 20 IoCs

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

description	flow	ioc
HTTP User-Agent header	23	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	26	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	27	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	30	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	6	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	15	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	19	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	24	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	28	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	31	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	5	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	9	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	20	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	35	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	7	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	16	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	18	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	22	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	32	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript
HTTP User-Agent header	34	WSHRAT\|00BEA431\|ZQABOPWE\|Admin\|Microsoft Windows 7 Ultimate \|plus\|nan-av\|false - 21/11/2024\|JavaScript

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2268	CZQi.exe
2268	CZQi.exe
2268	CZQi.exe
2268	CZQi.exe
2268	CZQi.exe
2268	CZQi.exe
2268	CZQi.exe
1968	powershell.exe
1940	powershell.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2268	CZQi.exe
Token: SeDebugPrivilege	1968	powershell.exe
Token: SeDebugPrivilege	1940	powershell.exe
Token: SeDebugPrivilege	1756	CZQi.exe

Suspicious use of WriteProcessMemory 34 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 1648	2860	wscript.exe	28
PID 2860 wrote to memory of 1648	2860	wscript.exe	28
PID 2860 wrote to memory of 1648	2860	wscript.exe	28
PID 2860 wrote to memory of 2284	2860	wscript.exe	29
PID 2860 wrote to memory of 2284	2860	wscript.exe	29
PID 2860 wrote to memory of 2284	2860	wscript.exe	29
PID 2284 wrote to memory of 2108	2284	WScript.exe	30
PID 2284 wrote to memory of 2108	2284	WScript.exe	30
PID 2284 wrote to memory of 2108	2284	WScript.exe	30
PID 1648 wrote to memory of 2268	1648	WScript.exe	31
PID 1648 wrote to memory of 2268	1648	WScript.exe	31
PID 1648 wrote to memory of 2268	1648	WScript.exe	31
PID 1648 wrote to memory of 2268	1648	WScript.exe	31
PID 2268 wrote to memory of 1968	2268	CZQi.exe	37
PID 2268 wrote to memory of 1968	2268	CZQi.exe	37
PID 2268 wrote to memory of 1968	2268	CZQi.exe	37
PID 2268 wrote to memory of 1968	2268	CZQi.exe	37
PID 2268 wrote to memory of 1940	2268	CZQi.exe	39
PID 2268 wrote to memory of 1940	2268	CZQi.exe	39
PID 2268 wrote to memory of 1940	2268	CZQi.exe	39
PID 2268 wrote to memory of 1940	2268	CZQi.exe	39
PID 2268 wrote to memory of 1976	2268	CZQi.exe	41
PID 2268 wrote to memory of 1976	2268	CZQi.exe	41
PID 2268 wrote to memory of 1976	2268	CZQi.exe	41
PID 2268 wrote to memory of 1976	2268	CZQi.exe	41
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43
PID 2268 wrote to memory of 1756	2268	CZQi.exe	43

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\ORDER-2411210684CAV.XLS.js
1⤵
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\adobe.js"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Users\Admin\AppData\Local\Temp\CZQi.exe
    "C:\Users\Admin\AppData\Local\Temp\CZQi.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2268
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Local\Temp\CZQi.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1968
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\qQwuocCgNPPLU.exe"
      4⤵
      Command and Scripting Interpreter: PowerShell
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:1940
  - - C:\Windows\SysWOW64\schtasks.exe
      "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\qQwuocCgNPPLU" /XML "C:\Users\Admin\AppData\Local\Temp\tmp13CF.tmp"
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1976
  - - C:\Users\Admin\AppData\Local\Temp\CZQi.exe
      "C:\Users\Admin\AppData\Local\Temp\CZQi.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1756
- C:\Windows\System32\WScript.exe
  "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\word.js"
  2⤵
  - Drops startup file
  - Adds Run key to start application
  - Suspicious use of WriteProcessMemory
  PID:2284
- - C:\Windows\System32\wscript.exe
    "C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\word.js"
    3⤵
    - Blocklisted process makes network request
    - Drops startup file
    - Adds Run key to start application
    PID:2108

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

JavaScript

T1059.007

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
429KB

MD5
3fd6653902c9fe6829c2ff418415bd5c

SHA1
10db3132f7ecc3cb40c6b2d9ed7752212321d43b

SHA256
ef08c45261e6f6007826942a2b772217d0318d89ba9ca9674ae9f5a3e514d6ae

SHA512
9c4992514491e94ebf95e40639fd0044af28bc2974edd00ed954fef4b46a02cf22dc0700d61e82cf75aa4b4206bb8ea86f23ce10433dd15cb6e4ea701bea60b2

Download Submit
C:\Users\Admin\AppData\Local\Temp\Cab2CEC.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

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

Filesize
595KB

MD5
ce87d990a20f13f79269cb9801a2b09a

SHA1
11ddbe5f5dfc13ee9a7052937504475ce61d3132

SHA256
8844902f3cbcc50fceb46c6d0006ec59e728abbe63ca732e185fa57e37f337bf

SHA512
b1431ea7b6220c82e085883e0c479408b9e1c09378e79a43cb8c7a5edc41dd79724c77a2b16f0fb8e7f934e5d788b2e571490ec0f09f9771cd52a7b04ce9163a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp13CF.tmp

Filesize
1KB

MD5
5193ba290e6a139c31c9d88c424b5859

SHA1
6d365b3e60c69346f0eae5454629640095f08741

SHA256
6628218d832d5a8f0a8c2dde04a458f3561356cd24d7c2b8c2f8a8824c24db10

SHA512
e8e0129a2e2cdad508125149340ae2cbb4439c83cdca8d99cf94e100466166e1c102a23561e860e2fe8938c224a7cd4fdc89d7d7716bf7245e15502788cae6fc

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

Filesize
283KB

MD5
805074ef02a61e38a12780b74148345e

SHA1
d9c8120e315b8792902f213081403e7a627cd194

SHA256
ae62fbf751ed2dd1cb21ee7bcf2005664f5d1302c9f98b504425444f85f4ee75

SHA512
dcd95db5b8cc631a7d2686cdc4440c0e4ee6f1cfc5eb69b38915aca80cc5b6d5e5289cf3d2a13a2743528100bce18926c24631d616c5cb513dd14dc3e87f13cc

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\QWIKCTCIC0WAIDEJNYAV.temp

Filesize
7KB

MD5
54eaaf19248af06d7067c8f7afac592e

SHA1
ec588720793c2c42b8156f67d29057c0366e03ef

SHA256
1fa520c831fedce2aaadce34b684aa0f3fd987bd9066ffe63401ee8dd86e1560

SHA512
c10ec44cc1b507fb7b431ba0fa862d4b3df075e467fd334e3b9886e01ab0a7a7ac0b1daeec5ce2cd785aff3e32b1b169f5a77f719c4ee11c41288fe6979a9b33

Download Submit
memory/1756-48-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/1756-46-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-53-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-51-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-49-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-44-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-42-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1756-40-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2268-25-0x0000000004D70000-0x0000000004DC6000-memory.dmp

Filesize
344KB

Download
memory/2268-22-0x00000000004F0000-0x0000000000502000-memory.dmp

Filesize
72KB

Download
memory/2268-20-0x0000000000F60000-0x0000000000FD2000-memory.dmp

Filesize
456KB

Download