asyncrat | 655a42ce44e971a78e5cb395b056a32e274eacc64a6137d23b6748f875eaf6a2

Analysis

max time kernel
118s
max time network
120s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
14-11-2024 05:32

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General

Target

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
Size

1.3MB
MD5

430a1421e7deca92dca9bbf7b5752601
SHA1

7a18ca451cabb1c722fba5f6e5325ba3f2625fe4
SHA256

655a42ce44e971a78e5cb395b056a32e274eacc64a6137d23b6748f875eaf6a2
SHA512

4922ea0e167c4e507ac97193439c41227ddbc85932eea9bdbbacea6edd7f63ed794f2dbdde541375d4d3b62331c0b05a4bb172e0bd4029241287ee0fa1da00ad
SSDEEP

24576:prEh3ZijTdfoXBZ4K1BunL32SenhydzeN1PXjmc/muTM7Eyv/fkVvMUD:pcZigZ4KX8D2BN1PhmZHv/cBD

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

AWS | 3Losh

Botnet

Default

silenceme.duckdns.org:6606

silenceme.duckdns.org:7707

silenceme.duckdns.org:8808

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 NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

description pid process target process

PID 4896 created 3420 4896 a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe Explorer.EXE

description	pid	process	target process
PID 4896 created 3420	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	Explorer.EXE

Drops startup file 1 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Path.vbs	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

description	pid	process	target process
PID 4896 set thread context of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe

System Location Discovery: System Language Discovery 1 TTPs 2 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:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exeInstallUtil.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	InstallUtil.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

pid process

4896 a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

pid	process
4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exeInstallUtil.exe

description	pid	process
Token: SeDebugPrivilege	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
Token: SeDebugPrivilege	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
Token: SeDebugPrivilege	1008	InstallUtil.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe

description	pid	process	target process
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe
PID 4896 wrote to memory of 1008	4896	a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe	InstallUtil.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:3420
- C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe
  "C:\Users\Admin\AppData\Local\Temp\a584a7be7d939b89cfa0507508a96b6ef245283b77b455ffb6274b99e780983eN.exe"
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Drops startup file
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4896
- 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:1008

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1008-1092-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1008-1095-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1008-1096-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1008-1097-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/1008-1098-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-37-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-1082-0x0000000005090000-0x00000000050DC000-memory.dmp

Filesize
304KB

Download
memory/4896-2-0x0000000004DD0000-0x0000000004EBA000-memory.dmp

Filesize
936KB

Download
memory/4896-3-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-4-0x0000000005470000-0x0000000005A14000-memory.dmp

Filesize
5.6MB

Download
memory/4896-5-0x0000000004F60000-0x0000000004FF2000-memory.dmp

Filesize
584KB

Download
memory/4896-41-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-59-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-69-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-67-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-65-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-63-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-61-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-57-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-55-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-53-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-51-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-49-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-47-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-45-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-43-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-0-0x000000007536E000-0x000000007536F000-memory.dmp

Filesize
4KB

Download
memory/4896-1094-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-1-0x0000000000210000-0x0000000000362000-memory.dmp

Filesize
1.3MB

Download
memory/4896-23-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-27-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-25-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-31-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-21-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-17-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-15-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-13-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-11-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-9-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-7-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-6-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-39-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-29-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-19-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-1080-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-1081-0x0000000005030000-0x000000000508C000-memory.dmp

Filesize
368KB

Download
memory/4896-33-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-1086-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-1087-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download
memory/4896-1088-0x0000000005130000-0x0000000005184000-memory.dmp

Filesize
336KB

Download
memory/4896-35-0x0000000004DD0000-0x0000000004EB4000-memory.dmp

Filesize
912KB

Download
memory/4896-1093-0x0000000075360000-0x0000000075B10000-memory.dmp

Filesize
7.7MB

Download