asyncrat | f56656c84c17d1bf6a572bb009c3b6dc74c2854ed8403ef7bb54df2294526c3b

General

Target

f56656c84c17d1bf6a572bb009c3b6dc74c2854ed8403ef7bb54df2294526c3b.ps1
Size

454KB
MD5

03554089f66f02bf6a5f6f6bb8ed31b1
SHA1

9db4ffb74ec4242f9774163406f22596790ef80d
SHA256

f56656c84c17d1bf6a572bb009c3b6dc74c2854ed8403ef7bb54df2294526c3b
SHA512

857a5acf825d918c5b27a4d8836890cf843d9a1efd1eeb197b83d7dd42b609086c07ca080663e02baebcb8269b8cb604fd8449ce0b8868b23924b7870e3af50a
SSDEEP

1536:K66K5QQcOIH6/cThluPFuyEFBDHIuH7FWRGPP3jU86lsWST+HxYfn8qgy5J+LLgi:Kk7

Score

10^/10

asyncrat 00000001 discovery execution rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

00000001

C2

81.10.39.58:7077

Mutex

AsyncMutex_alosh

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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2276 set thread context of 1124	2276	powershell.exe	86

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2276	powershell.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	aspnet_compiler.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
2276	powershell.exe
1124	aspnet_compiler.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2276	powershell.exe
Token: SeDebugPrivilege	1124	aspnet_compiler.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1124	aspnet_compiler.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2276 wrote to memory of 5000	2276	powershell.exe	83
PID 2276 wrote to memory of 5000	2276	powershell.exe	83
PID 2276 wrote to memory of 5000	2276	powershell.exe	83
PID 2276 wrote to memory of 3156	2276	powershell.exe	84
PID 2276 wrote to memory of 3156	2276	powershell.exe	84
PID 2276 wrote to memory of 3156	2276	powershell.exe	84
PID 2276 wrote to memory of 3908	2276	powershell.exe	85
PID 2276 wrote to memory of 3908	2276	powershell.exe	85
PID 2276 wrote to memory of 3908	2276	powershell.exe	85
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86
PID 2276 wrote to memory of 1124	2276	powershell.exe	86

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\f56656c84c17d1bf6a572bb009c3b6dc74c2854ed8403ef7bb54df2294526c3b.ps1
1⤵
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2276
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:5000
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:3156
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  PID:3908
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\aspnet_compiler.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1124

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_gnxuxibw.tf2.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
memory/1124-22-0x0000000005920000-0x000000000592A000-memory.dmp

Filesize
40KB

Download
memory/1124-21-0x0000000005940000-0x00000000059D2000-memory.dmp

Filesize
584KB

Download
memory/1124-28-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/1124-27-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/1124-26-0x0000000006A80000-0x0000000006AE6000-memory.dmp

Filesize
408KB

Download
memory/1124-14-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1124-25-0x00000000069E0000-0x0000000006A7C000-memory.dmp

Filesize
624KB

Download
memory/1124-20-0x0000000005D50000-0x00000000062F4000-memory.dmp

Filesize
5.6MB

Download
memory/1124-19-0x0000000074BD0000-0x0000000075380000-memory.dmp

Filesize
7.7MB

Download
memory/1124-18-0x0000000074BDE000-0x0000000074BDF000-memory.dmp

Filesize
4KB

Download
memory/2276-17-0x00007FFD0AF00000-0x00007FFD0B9C1000-memory.dmp

Filesize
10.8MB

Download
memory/2276-0-0x00007FFD0AF03000-0x00007FFD0AF05000-memory.dmp

Filesize
8KB

Download
memory/2276-10-0x0000022D4D370000-0x0000022D4D392000-memory.dmp

Filesize
136KB

Download
memory/2276-13-0x0000022D4D340000-0x0000022D4D34C000-memory.dmp

Filesize
48KB

Download
memory/2276-12-0x00007FFD0AF00000-0x00007FFD0B9C1000-memory.dmp

Filesize
10.8MB

Download
memory/2276-11-0x00007FFD0AF00000-0x00007FFD0B9C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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