asyncrat | 1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb

Analysis

max time kernel
135s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
09-01-2025 02:05

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General

Target

1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.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
3932	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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.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 1752 set thread context of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93

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	vbc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.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
2528	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
3932	powershell.exe
3932	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3932	powershell.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 1752 wrote to memory of 3932	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	89
PID 1752 wrote to memory of 3932	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	89
PID 1752 wrote to memory of 3932	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	89
PID 1752 wrote to memory of 2528	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	91
PID 1752 wrote to memory of 2528	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	91
PID 1752 wrote to memory of 2528	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	91
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93
PID 1752 wrote to memory of 3896	1752	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	93

C:\Users\Admin\AppData\Local\Temp\1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe
"C:\Users\Admin\AppData\Local\Temp\1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe"
1⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1752
- 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:3932
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DpmrYeeDGcj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpF378.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2528
- 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
  PID:3896

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_wkwxtmey.cvs.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF378.tmp

Filesize
1KB

MD5
a96e8b131f60fa907c804a62c93ddd04

SHA1
de11277bac96b2be6962484fc18a114d0b1f4801

SHA256
b9504a7a8d9627360009d6dfb1831c07ffec549811a35b43abfec3ba53940bf6

SHA512
ab11258d9bc0bb2bf9992b13ec95652e0e414e7537c7293cd0eed23054fc42097fa5a76f00f912bec3674451387370523729c6f1708eb4453162aa253bed0af8

Download Submit
memory/1752-6-0x0000000005BB0000-0x0000000005C4C000-memory.dmp

Filesize
624KB

Download
memory/1752-3-0x0000000005980000-0x0000000005A12000-memory.dmp

Filesize
584KB

Download
memory/1752-4-0x00000000058E0000-0x00000000058EA000-memory.dmp

Filesize
40KB

Download
memory/1752-5-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/1752-2-0x0000000005F30000-0x00000000064D4000-memory.dmp

Filesize
5.6MB

Download
memory/1752-7-0x0000000005D90000-0x0000000005DAC000-memory.dmp

Filesize
112KB

Download
memory/1752-8-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/1752-9-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/1752-10-0x0000000008610000-0x0000000008666000-memory.dmp

Filesize
344KB

Download
memory/1752-36-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/1752-0-0x00000000747CE000-0x00000000747CF000-memory.dmp

Filesize
4KB

Download
memory/1752-1-0x0000000000E50000-0x0000000000EEE000-memory.dmp

Filesize
632KB

Download
memory/3896-30-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3932-22-0x0000000005880000-0x00000000058E6000-memory.dmp

Filesize
408KB

Download
memory/3932-50-0x00000000065D0000-0x00000000065EE000-memory.dmp

Filesize
120KB

Download
memory/3932-21-0x0000000005050000-0x0000000005072000-memory.dmp

Filesize
136KB

Download
memory/3932-18-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3932-25-0x0000000005930000-0x0000000005996000-memory.dmp

Filesize
408KB

Download
memory/3932-17-0x00000000050E0000-0x0000000005708000-memory.dmp

Filesize
6.2MB

Download
memory/3932-16-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3932-35-0x0000000005AE0000-0x0000000005E34000-memory.dmp

Filesize
3.3MB

Download
memory/3932-15-0x00000000026E0000-0x0000000002716000-memory.dmp

Filesize
216KB

Download
memory/3932-37-0x0000000005FE0000-0x0000000005FFE000-memory.dmp

Filesize
120KB

Download
memory/3932-38-0x0000000006020000-0x000000000606C000-memory.dmp

Filesize
304KB

Download
memory/3932-39-0x0000000006FB0000-0x0000000006FE2000-memory.dmp

Filesize
200KB

Download
memory/3932-40-0x0000000075050000-0x000000007509C000-memory.dmp

Filesize
304KB

Download
memory/3932-19-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download
memory/3932-51-0x00000000071F0000-0x0000000007293000-memory.dmp

Filesize
652KB

Download
memory/3932-52-0x0000000007970000-0x0000000007FEA000-memory.dmp

Filesize
6.5MB

Download
memory/3932-53-0x0000000007330000-0x000000000734A000-memory.dmp

Filesize
104KB

Download
memory/3932-54-0x00000000073A0000-0x00000000073AA000-memory.dmp

Filesize
40KB

Download
memory/3932-55-0x00000000075B0000-0x0000000007646000-memory.dmp

Filesize
600KB

Download
memory/3932-56-0x0000000007530000-0x0000000007541000-memory.dmp

Filesize
68KB

Download
memory/3932-57-0x0000000007560000-0x000000000756E000-memory.dmp

Filesize
56KB

Download
memory/3932-58-0x0000000007570000-0x0000000007584000-memory.dmp

Filesize
80KB

Download
memory/3932-59-0x0000000007670000-0x000000000768A000-memory.dmp

Filesize
104KB

Download
memory/3932-60-0x0000000007650000-0x0000000007658000-memory.dmp

Filesize
32KB

Download
memory/3932-63-0x00000000747C0000-0x0000000074F70000-memory.dmp

Filesize
7.7MB

Download