asyncrat | 1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb

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

C2

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
2256	powershell.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 2132 set thread context of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35

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	schtasks.exe
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

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
2712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2256	powershell.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2256	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2132 wrote to memory of 2256	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	31
PID 2132 wrote to memory of 2256	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	31
PID 2132 wrote to memory of 2256	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	31
PID 2132 wrote to memory of 2256	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	31
PID 2132 wrote to memory of 2712	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	33
PID 2132 wrote to memory of 2712	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	33
PID 2132 wrote to memory of 2712	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	33
PID 2132 wrote to memory of 2712	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	33
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35
PID 2132 wrote to memory of 2716	2132	1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe	35

C:\Users\Admin\AppData\Local\Temp\1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe
"C:\Users\Admin\AppData\Local\Temp\1466c1e6bd4b88ad92eac2240158c6516b8601fc59fc4260711c20e269ba17cb.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2132
- 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:2256
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\DpmrYeeDGcj" /XML "C:\Users\Admin\AppData\Local\Temp\tmpDE9C.tmp"
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:2712
- 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:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

2

T1059

PowerShell

1

T1059.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

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\tmpDE9C.tmp

Filesize
1KB

MD5
72c91d043ea1552f3bbc6341f5343b59

SHA1
a346653847b3c577ce67883c6d8891f035c84219

SHA256
1bf44bd29b1803ba8ccf01380d0aa372f83b32b51493d24edd80d8cfbdf075b6

SHA512
c902813178f26efb1ecde175b269dc072e44a01880a3ce99fafd97227ec1a63b14215913fc51e7429feae9ad8e10afd00b85d3f2fd218d570f679c729f6541e0

Download Submit
memory/2132-27-0x0000000074800000-0x0000000074EEE000-memory.dmp

Filesize
6.9MB

Download
memory/2132-1-0x00000000001D0000-0x000000000026E000-memory.dmp

Filesize
632KB

Download
memory/2132-2-0x0000000074800000-0x0000000074EEE000-memory.dmp

Filesize
6.9MB

Download
memory/2132-3-0x00000000004A0000-0x00000000004BC000-memory.dmp

Filesize
112KB

Download
memory/2132-4-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/2132-5-0x0000000074800000-0x0000000074EEE000-memory.dmp

Filesize
6.9MB

Download
memory/2132-6-0x0000000004730000-0x0000000004786000-memory.dmp

Filesize
344KB

Download
memory/2132-0-0x000000007480E000-0x000000007480F000-memory.dmp

Filesize
4KB

Download
memory/2716-26-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-23-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-22-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2716-20-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-16-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-14-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2716-24-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads