Malware Analysis Report

2024-09-22 06:40

Sample ID 240619-thqrsatang
Target 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe
SHA256 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311
Tags
asyncrat default rat
score
10/10

Table of Contents

Analysis Overview

MITRE ATT&CK Matrix

Analysis: static1

Detonation Overview

Signatures

Analysis: behavioral2

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis: behavioral1

Detonation Overview

Command Line

Signatures

Processes

Network

Files

Analysis Overview

score
10/10

SHA256

5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311

Threat Level: Known bad

The file 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe was found to be: Known bad.

Malicious Activity Summary

asyncrat default rat

Async RAT payload

Asyncrat family

AsyncRat

Async RAT payload

Executes dropped EXE

Checks computer location settings

Unsigned PE

Enumerates physical storage devices

Suspicious use of WriteProcessMemory

Delays execution with timeout.exe

Scheduled Task/Job: Scheduled Task

Suspicious use of AdjustPrivilegeToken

Suspicious behavior: EnumeratesProcesses

Suspicious use of SetWindowsHookEx

Uses Task Scheduler COM API

MITRE ATT&CK Matrix V13

Analysis: static1

Detonation Overview

Reported

2024-06-19 16:03

Signatures

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Asyncrat family

asyncrat

Unsigned PE

Description Indicator Process Target
N/A N/A N/A N/A

Analysis: behavioral2

Detonation Overview

Submitted

2024-06-19 16:03

Reported

2024-06-19 16:06

Platform

win10v2004-20240508-en

Max time kernel

147s

Max time network

149s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Checks computer location settings

Description Indicator Process Target
Key value queried \REGISTRY\USER\S-1-5-21-1337824034-2731376981-3755436523-1000\Control Panel\International\Geo\Nation C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious behavior: EnumeratesProcesses

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe

"C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"' & exit

C:\Windows\system32\cmd.exe

C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp4F87.tmp.bat""

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"'

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\win.exe

"C:\Users\Admin\AppData\Roaming\win.exe"

Network

Country Destination Domain Proto
US 8.8.8.8:53 8.8.8.8.in-addr.arpa udp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp

Files

memory/2800-0-0x00007FFECB833000-0x00007FFECB835000-memory.dmp

memory/2800-1-0x0000000000960000-0x0000000000978000-memory.dmp

memory/2800-3-0x00007FFECB830000-0x00007FFECC2F1000-memory.dmp

memory/2800-8-0x00007FFECB830000-0x00007FFECC2F1000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp4F87.tmp.bat

MD5 e5afee54df0bfb66e4e8576a989beaa2
SHA1 a3b258875774ca5c3923abb3ae25c5a873bd118a
SHA256 552cbca4f4f50d6a04c02e2e81f6634249b09a869df51b2d09d65ef406b01e9c
SHA512 5c1a137436e86e9f0258648f8dccb64bc9954b8798255cd67567a0a36f0c6727062c1b2c7aa47166ab6a446fa871319da1f2ff8d4a48e8d53b48a450b074a425

C:\Users\Admin\AppData\Roaming\win.exe

MD5 4fa7b1eec1fc84eb3a13c29e5a37aae7
SHA1 dfff9fceeb4d74d7e82f9f0a65d1889fa0f9e326
SHA256 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311
SHA512 5e36a5589499a3db56d78de1b66a9ee57a2972bc57bf4b915df9118fd2a584c74ba00c61531d922431b72e87f9c53585c4c1a78a2aba122a22ea5e3603aa06ba

C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

MD5 cf759e4c5f14fe3eec41b87ed756cea8
SHA1 c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512 c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Analysis: behavioral1

Detonation Overview

Submitted

2024-06-19 16:03

Reported

2024-06-19 16:06

Platform

win7-20240508-en

Max time kernel

126s

Max time network

136s

Command Line

"C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe"

Signatures

AsyncRat

rat asyncrat

Async RAT payload

rat
Description Indicator Process Target
N/A N/A N/A N/A

Executes dropped EXE

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Enumerates physical storage devices

Delays execution with timeout.exe

evasion
Description Indicator Process Target
N/A N/A C:\Windows\system32\timeout.exe N/A

Scheduled Task/Job: Scheduled Task

persistence execution
Description Indicator Process Target
N/A N/A C:\Windows\system32\schtasks.exe N/A

Suspicious use of AdjustPrivilegeToken

Description Indicator Process Target
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe N/A
Token: SeDebugPrivilege N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Suspicious use of SetWindowsHookEx

Description Indicator Process Target
N/A N/A C:\Users\Admin\AppData\Roaming\win.exe N/A

Suspicious use of WriteProcessMemory

Description Indicator Process Target
PID 3016 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\System32\cmd.exe
PID 3016 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\System32\cmd.exe
PID 3016 wrote to memory of 2108 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\System32\cmd.exe
PID 3016 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\system32\cmd.exe
PID 3016 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\system32\cmd.exe
PID 3016 wrote to memory of 1152 N/A C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe C:\Windows\system32\cmd.exe
PID 2108 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2108 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 2108 wrote to memory of 2744 N/A C:\Windows\System32\cmd.exe C:\Windows\system32\schtasks.exe
PID 1152 wrote to memory of 2776 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 1152 wrote to memory of 2776 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 1152 wrote to memory of 2776 N/A C:\Windows\system32\cmd.exe C:\Windows\system32\timeout.exe
PID 1152 wrote to memory of 2628 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\win.exe
PID 1152 wrote to memory of 2628 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\win.exe
PID 1152 wrote to memory of 2628 N/A C:\Windows\system32\cmd.exe C:\Users\Admin\AppData\Roaming\win.exe

Uses Task Scheduler COM API

persistence

Processes

C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe

"C:\Users\Admin\AppData\Local\Temp\5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311.exe"

C:\Windows\System32\cmd.exe

"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"' & exit

C:\Windows\system32\cmd.exe

cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2462.tmp.bat""

C:\Windows\system32\schtasks.exe

schtasks /create /f /sc onlogon /rl highest /tn "win" /tr '"C:\Users\Admin\AppData\Roaming\win.exe"'

C:\Windows\system32\timeout.exe

timeout 3

C:\Users\Admin\AppData\Roaming\win.exe

"C:\Users\Admin\AppData\Roaming\win.exe"

Network

Country Destination Domain Proto
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp
US 72.5.43.15:4449 tcp

Files

memory/3016-0-0x000007FEF55D3000-0x000007FEF55D4000-memory.dmp

memory/3016-1-0x0000000000AB0000-0x0000000000AC8000-memory.dmp

memory/3016-3-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

C:\Users\Admin\AppData\Local\Temp\tmp2462.tmp.bat

MD5 38e99fd2dbe17df5e08df5b36b3a27fe
SHA1 78162395ec687620a18618173361fb1363e137d5
SHA256 8ba33bee22a71e1b9c5453501923cfc7ff3fdb3a0f4673a994d609d8281a1a5d
SHA512 761b82bed4ecc0c80dd8554bc9173ca5d678dad2db552b8e504be6b0863161ca3c56ce8607813a67bb81515f9c0cf51a8baa7f0ebe87d501f36d888cac389fc6

memory/3016-12-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

memory/3016-13-0x000007FEF55D0000-0x000007FEF5FBC000-memory.dmp

C:\Users\Admin\AppData\Roaming\win.exe

MD5 4fa7b1eec1fc84eb3a13c29e5a37aae7
SHA1 dfff9fceeb4d74d7e82f9f0a65d1889fa0f9e326
SHA256 5f5aa560b9b2d9f7ea3b9a4e05b9b9b35107dc78bd763000fe05f6b3f998f311
SHA512 5e36a5589499a3db56d78de1b66a9ee57a2972bc57bf4b915df9118fd2a584c74ba00c61531d922431b72e87f9c53585c4c1a78a2aba122a22ea5e3603aa06ba

memory/2628-18-0x0000000001240000-0x0000000001258000-memory.dmp

C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

MD5 cf759e4c5f14fe3eec41b87ed756cea8
SHA1 c27c796bb3c2fac929359563676f4ba1ffada1f5
SHA256 c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761
SHA512 c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b