asyncrat | 8286913b27550033c014364f88fd7b80a506f3a0da12e08224369b798582cbd2

Analysis

max time kernel
93s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
11-11-2024 15:22

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General

Target

AACready-GF.exe
Size

7.1MB
MD5

974664dbf6d8c80702d556b585ce654c
SHA1

b994a6821182eaecdb26a22b2d511c773272a83d
SHA256

4a5fec98c60b33e691b0eef02ae37f4dc13aa7594ac8838b3e4f41132264df4e
SHA512

613a23a1e6e8c1eb033b93e910f6092ec33f654b34336942eebbbe251f8358e37d3fc074c3e885de2edc48eb96c2dd1cbbb1bf6871823fc44961e67ed052d4ed
SSDEEP

98304:49SRtK87ch0RCvu3JdGoGpJm9GRkwK8g+psqof+FE0CcJkA8gNB4z6n:jRtKoch0R2oGpjaGXRJkAE2

Score

10^/10

asyncrat default discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

grabchopps.duckdns.org:15489

Mutex

glotrsvfb_qwqdanchun

Attributes

delay
1
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

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

AACready-GF.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\AACready-GF = "cmd.exe /C start \"\" /D \"C:\\Users\\Admin\\Document\" \"C:\\Users\\Admin\\Document\\AACready-GF.exe\""	AACready-GF.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

AACready-GF.exe

description pid process target process

PID 4928 set thread context of 3468 4928 AACready-GF.exe installutil.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

Processes:

installutil.exe

description ioc process

Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language installutil.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AACready-GF.exeinstallutil.exe

description pid process

Token: SeDebugPrivilege 4928 AACready-GF.exe
Token: SeDebugPrivilege 3468 installutil.exe

description	pid	process	target process
PID 4928 set thread context of 3468	4928	AACready-GF.exe	installutil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	installutil.exe

description	pid	process
Token: SeDebugPrivilege	4928	AACready-GF.exe
Token: SeDebugPrivilege	3468	installutil.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

AACready-GF.exe

description	pid	process	target process
PID 4928 wrote to memory of 4040	4928	AACready-GF.exe	AddInProcess32.exe
PID 4928 wrote to memory of 4040	4928	AACready-GF.exe	AddInProcess32.exe
PID 4928 wrote to memory of 4040	4928	AACready-GF.exe	AddInProcess32.exe
PID 4928 wrote to memory of 4040	4928	AACready-GF.exe	AddInProcess32.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe
PID 4928 wrote to memory of 3468	4928	AACready-GF.exe	installutil.exe

C:\Users\Admin\AppData\Local\Temp\AACready-GF.exe
"C:\Users\Admin\AppData\Local\Temp\AACready-GF.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4928
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\AddInProcess32.exe"
  2⤵
  PID:4040
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\installutil.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:3468

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3468-30-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/3468-32-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/3468-33-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/3468-36-0x0000000005800000-0x000000000589C000-memory.dmp

Filesize
624KB

Download
memory/3468-37-0x0000000005E50000-0x00000000063F4000-memory.dmp

Filesize
5.6MB

Download
memory/3468-38-0x0000000005910000-0x0000000005976000-memory.dmp

Filesize
408KB

Download
memory/3468-39-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/3468-40-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/4928-29-0x00007FFACA030000-0x00007FFACA0EE000-memory.dmp

Filesize
760KB

Download
memory/4928-28-0x00007FFACA290000-0x00007FFACA485000-memory.dmp

Filesize
2.0MB

Download
memory/4928-31-0x00007FFACA32D000-0x00007FFACA32F000-memory.dmp

Filesize
8KB

Download