asyncrat | aa00ecf9f75092b10571a992d4a6c736939eef4b742cf0e735a1c7c4a7ee71eb

Analysis

max time kernel
26s
max time network
16s
platform
windows7_x64
resource
win7-20240705-en
resource tags

arch:x64arch:x86image:win7-20240705-enlocale:en-usos:windows7-x64system
submitted
24-07-2024 13:05

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General

Target

8bd1977b9103ba367f4ef6dab9faeca0N.exe
Size

58KB
MD5

8bd1977b9103ba367f4ef6dab9faeca0
SHA1

08e87dfef23486e089bf42cc9048297cdad48005
SHA256

aa00ecf9f75092b10571a992d4a6c736939eef4b742cf0e735a1c7c4a7ee71eb
SHA512

adb8d875752102220d18e1f067c9d58378f79538faa951edbb95a858128d21ad0520802013789a175de12ec6e6341d69f96bcdf206e6bf5ee6aa4958baca8b97
SSDEEP

1536:PgdmilPJab/ZNKyLJeA/CTVIU9w2yCgP75dBAwQ4Dca:al3qNKoe8gVI+DgPNcw99

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

darknessdz.ddns.net:1177

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
10
install
true
install_file
svchost.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00080000000175f2-9.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1860	edge.exe

Loads dropped DLL 1 IoCs

pid	Process
2960	8bd1977b9103ba367f4ef6dab9faeca0N.exe

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 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	8bd1977b9103ba367f4ef6dab9faeca0N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 1860	2960	8bd1977b9103ba367f4ef6dab9faeca0N.exe	31
PID 2960 wrote to memory of 1860	2960	8bd1977b9103ba367f4ef6dab9faeca0N.exe	31
PID 2960 wrote to memory of 1860	2960	8bd1977b9103ba367f4ef6dab9faeca0N.exe	31
PID 2960 wrote to memory of 1860	2960	8bd1977b9103ba367f4ef6dab9faeca0N.exe	31

C:\Users\Admin\AppData\Local\Temp\8bd1977b9103ba367f4ef6dab9faeca0N.exe
"C:\Users\Admin\AppData\Local\Temp\8bd1977b9103ba367f4ef6dab9faeca0N.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2960
- C:\Users\Admin\AppData\Local\Temp\edge.exe
  "C:\Users\Admin\AppData\Local\Temp\edge.exe"
  2⤵
  - Executes dropped EXE
  PID:1860

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\edge.exe

Filesize
48KB

MD5
b1337fc76c1e8f218b5dc4e87307a15d

SHA1
522439c505edc1388249034420af28b87e46727c

SHA256
16619eff9b177087be47f503b0cb2db02061637125a4ec7111bb54b828b95d0a

SHA512
c6f057cd82d6c01d7994520be3c5afc205fe1972b0bc5d583cc80aedcabc8a10c3bb43dcfb13f5a48362d99a4e07e127140a1211fadf52ddfd03251412774c1b

Download Submit
memory/1860-11-0x000007FEF5C73000-0x000007FEF5C74000-memory.dmp

Filesize
4KB

Download
memory/1860-13-0x0000000000DD0000-0x0000000000DE2000-memory.dmp

Filesize
72KB

Download
memory/1860-14-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/1860-15-0x000007FEF5C70000-0x000007FEF665C000-memory.dmp

Filesize
9.9MB

Download
memory/2960-0-0x0000000074BFE000-0x0000000074BFF000-memory.dmp

Filesize
4KB

Download
memory/2960-1-0x0000000000320000-0x0000000000334000-memory.dmp

Filesize
80KB

Download
memory/2960-5-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Filesize
6.9MB

Download
memory/2960-12-0x0000000074BF0000-0x00000000752DE000-memory.dmp

Filesize
6.9MB

Download