asyncrat | 1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb

Analysis

max time kernel
97s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
08-01-2025 11:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe
Size

615KB
MD5

934331eda0b472009322a97523b5bfdd
SHA1

0af4e8f64595d302ba3c5b277403230b73277eaa
SHA256

1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb
SHA512

57ce4f3fa2eab5b3792c83e045eb7a0d820b0c6172017fd41dd12f172f64fe2046b92e8bc7a0acf29d3f7d5b5aa35a3fe5fb60749a9bb07d6656bccd78c41576
SSDEEP

12288:keq4E6mfJiLl9fWcbQkpClS+j80IlSgaFguAGszwTPXC2l93dvp1p7Cph8p:dEkD9pClC3ogaFgrRzwVdvp1pVp

Score

10^/10

asyncrat default discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

ergsea.ydns.eu:7393

Mutex

0Yn3xzTdlCbn

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

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

execution

PowerShell

T1059.001

pid	Process
3972	powershell.exe

Checks computer location settings 2 TTPs 1 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-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe

Uses the VBS compiler for execution 1 TTPs

Command and Scripting Interpreter
T1059

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86

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 4 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	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.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	vbc.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
400	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3972	powershell.exe
3972	powershell.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3972	powershell.exe
Token: SeDebugPrivilege	1836	vbc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 3972	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	82
PID 2516 wrote to memory of 3972	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	82
PID 2516 wrote to memory of 3972	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	82
PID 2516 wrote to memory of 400	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	84
PID 2516 wrote to memory of 400	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	84
PID 2516 wrote to memory of 400	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	84
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86
PID 2516 wrote to memory of 1836	2516	PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe	86

C:\Users\Admin\AppData\Local\Temp\PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe
"C:\Users\Admin\AppData\Local\Temp\PEDIDO DE COMPRAS OC 1203 CRI234.xlsx.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\DpmrYeeDGcj.exe"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3972
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DpmrYeeDGcj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFEA3.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:400
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:1836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_unvq0hf2.nkx.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpFEA3.tmp

Filesize
1KB

MD5
9387105ed0a932fe626cf9f63d83f885

SHA1
ed3470b75115233f4db72e3ccdb3900b05d8f47c

SHA256
fdffe5ea0ce939a9af61b3f39b18629ad2a2a92c5e3c5362c5227481fde80577

SHA512
b9f9a1b154eb16ed7ccbc8a643b115ecf368706ec99c2005cda218fa31390c3ec02057e61cf70730aa06fcddd4f85d00d02d76e72d73a631a6bc9f7a23d88af5

Download Submit
memory/1836-67-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1836-24-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/1836-21-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2516-4-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/2516-5-0x0000000005420000-0x000000000542A000-memory.dmp

Filesize
40KB

Download
memory/2516-7-0x0000000005840000-0x000000000585C000-memory.dmp

Filesize
112KB

Download
memory/2516-8-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2516-9-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/2516-10-0x00000000080C0000-0x0000000008116000-memory.dmp

Filesize
344KB

Download
memory/2516-6-0x00000000056A0000-0x000000000573C000-memory.dmp

Filesize
624KB

Download
memory/2516-3-0x0000000005350000-0x00000000053E2000-memory.dmp

Filesize
584KB

Download
memory/2516-36-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/2516-0-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/2516-2-0x00000000059B0000-0x0000000005F54000-memory.dmp

Filesize
5.6MB

Download
memory/2516-1-0x00000000008F0000-0x000000000098E000-memory.dmp

Filesize
632KB

Download
memory/3972-26-0x00000000053A0000-0x0000000005406000-memory.dmp

Filesize
408KB

Download
memory/3972-52-0x0000000006A10000-0x0000000006AB3000-memory.dmp

Filesize
652KB

Download
memory/3972-19-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/3972-17-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/3972-18-0x0000000004B90000-0x00000000051B8000-memory.dmp

Filesize
6.2MB

Download
memory/3972-16-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/3972-37-0x0000000005410000-0x0000000005764000-memory.dmp

Filesize
3.3MB

Download
memory/3972-25-0x0000000005330000-0x0000000005396000-memory.dmp

Filesize
408KB

Download
memory/3972-38-0x0000000005A00000-0x0000000005A1E000-memory.dmp

Filesize
120KB

Download
memory/3972-39-0x0000000005B30000-0x0000000005B7C000-memory.dmp

Filesize
304KB

Download
memory/3972-40-0x00000000069D0000-0x0000000006A02000-memory.dmp

Filesize
200KB

Download
memory/3972-41-0x0000000074DD0000-0x0000000074E1C000-memory.dmp

Filesize
304KB

Download
memory/3972-51-0x0000000005FC0000-0x0000000005FDE000-memory.dmp

Filesize
120KB

Download
memory/3972-22-0x0000000004B40000-0x0000000004B62000-memory.dmp

Filesize
136KB

Download
memory/3972-53-0x0000000007370000-0x00000000079EA000-memory.dmp

Filesize
6.5MB

Download
memory/3972-54-0x0000000006D30000-0x0000000006D4A000-memory.dmp

Filesize
104KB

Download
memory/3972-55-0x0000000006DA0000-0x0000000006DAA000-memory.dmp

Filesize
40KB

Download
memory/3972-56-0x0000000006FB0000-0x0000000007046000-memory.dmp

Filesize
600KB

Download
memory/3972-57-0x0000000006F30000-0x0000000006F41000-memory.dmp

Filesize
68KB

Download
memory/3972-58-0x0000000006F60000-0x0000000006F6E000-memory.dmp

Filesize
56KB

Download
memory/3972-59-0x0000000006F70000-0x0000000006F84000-memory.dmp

Filesize
80KB

Download
memory/3972-60-0x0000000007070000-0x000000000708A000-memory.dmp

Filesize
104KB

Download
memory/3972-61-0x0000000007050000-0x0000000007058000-memory.dmp

Filesize
32KB

Download
memory/3972-64-0x0000000074540000-0x0000000074CF0000-memory.dmp

Filesize
7.7MB

Download
memory/3972-15-0x0000000004430000-0x0000000004466000-memory.dmp

Filesize
216KB

Download