asyncrat | a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c

General

Target

a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe
Size

450KB
MD5

15dd038348ef3ed32cd87b133099d3a3
SHA1

f4715268ad9ba4b04b19336520f757c9f4b281bb
SHA256

a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c
SHA512

9dd03c4016df5f4640200abc9969b0065741a68ccbc47afbf6715e1b8b35155e995aa09d15c31572b0ae908c73bc88d3f0a7bb03b2b3845797c26c2620698dcc
SSDEEP

12288:SODj9CW7P/njixh2wwh4wsaW0xRc6DYe8aQe76EaJ:/Dj9vL/jixh2wwhMZe8aGEa

Score

10^/10

asyncrat default discovery persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

5.tcp.eu.ngrok.io:5555

5.tcp.eu.ngrok.io:12811

Mutex

E7ieq51pSCWw

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x0007000000023c96-37.dat	family_asyncrat

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	[FATURA] 11.30.2024.pdf.exe

Executes dropped EXE 3 IoCs

pid	Process
4044	RunIt.exe
4192	[FATURA] 11.30.2024.pdf.exe
4408	rat.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Rnts.exe = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Rnts.exe"	RunIt.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 1 IoCs

Web Service

T1102

flow	ioc
13	5.tcp.eu.ngrok.io

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 3 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	RunIt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	[FATURA] 11.30.2024.pdf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rat.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4408	rat.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 4320 wrote to memory of 4044	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	84
PID 4320 wrote to memory of 4044	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	84
PID 4320 wrote to memory of 4044	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	84
PID 4320 wrote to memory of 4192	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	83
PID 4320 wrote to memory of 4192	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	83
PID 4320 wrote to memory of 4192	4320	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	83
PID 4192 wrote to memory of 4408	4192	[FATURA] 11.30.2024.pdf.exe	86
PID 4192 wrote to memory of 4408	4192	[FATURA] 11.30.2024.pdf.exe	86
PID 4192 wrote to memory of 4408	4192	[FATURA] 11.30.2024.pdf.exe	86

C:\Users\Admin\AppData\Local\Temp\a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe
"C:\Users\Admin\AppData\Local\Temp\a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4320
- C:\Users\Admin\AppData\Local\Temp\[FATURA] 11.30.2024.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\[FATURA] 11.30.2024.pdf.exe"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4192
- - C:\rat.exe
    "C:\rat.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4408
- C:\Users\Admin\AppData\Local\Temp\RunIt.exe
  "C:\Users\Admin\AppData\Local\Temp\RunIt.exe"
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - System Location Discovery: System Language Discovery
  PID:4044

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
143KB

MD5
d067619856f7f3079375960f62b99369

SHA1
964d548557dec3aa8e851526b71adca4b4ddbfd5

SHA256
9770561d2a27dbc16c230fe88af51f718d7d6274fcd63a3f109c381be848b4a9

SHA512
1ec891082ac133833217ce8314f6d163451c5554b789cbf8a5ff0d5ebd0b55a7ec49ea5c408bf784e6952a37526de9e77e6c39b9a4ea3b950c3fda44e7f973b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\[FATURA] 11.30.2024.pdf.exe

Filesize
315KB

MD5
c5e1f34f6b614fc60ffc02b24abf5c8c

SHA1
84feff2920f584b352e9d5735093d29ae2a4e81d

SHA256
ebaf28c1ef324e3ed18355e98fe6b93b7cf4d6f57f8a7b2cbcaaf128db8762ea

SHA512
b63c9563b5334af71a3f9e7639e31ae30ba80af23f4ef77ffa78a94cae25c7720b80bcad1d323bafda35db4de0b3f2cdb04c8ffbed189548012515eb8c7f66d7

Download Submit
C:\rat.exe

Filesize
47KB

MD5
1f1a2aaa35fea4c92563a14ce1377d3b

SHA1
ca4b71e27b28ea41ab6148e445693ebee857cf1a

SHA256
9d9bdea77486a0762bbab050a0cc193cb7bb27da16faae11606e5edc1730132b

SHA512
f4097908f0aed71d76c19e493b49156aad6e7036499a8a2c87806240419b9baa0fa5d2eb1754c5b7b3e89a4314fc501181c7a6d59bc5293894b2845f1392b87d

Download Submit
memory/4044-33-0x0000000005080000-0x000000000508A000-memory.dmp

Filesize
40KB

Download
memory/4044-27-0x00000000050A0000-0x0000000005132000-memory.dmp

Filesize
584KB

Download
memory/4044-48-0x000000007524E000-0x000000007524F000-memory.dmp

Filesize
4KB

Download
memory/4044-28-0x0000000005140000-0x00000000051DC000-memory.dmp

Filesize
624KB

Download
memory/4044-23-0x000000007524E000-0x000000007524F000-memory.dmp

Filesize
4KB

Download
memory/4044-24-0x0000000000600000-0x000000000062A000-memory.dmp

Filesize
168KB

Download
memory/4044-26-0x00000000055B0000-0x0000000005B54000-memory.dmp

Filesize
5.6MB

Download
memory/4320-6-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-2-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-0-0x00007FF955033000-0x00007FF955035000-memory.dmp

Filesize
8KB

Download
memory/4320-1-0x0000000000E30000-0x0000000000EA8000-memory.dmp

Filesize
480KB

Download
memory/4320-46-0x00007FF955033000-0x00007FF955035000-memory.dmp

Filesize
8KB

Download
memory/4320-47-0x00007FF955030000-0x00007FF955AF1000-memory.dmp

Filesize
10.8MB

Download
memory/4320-3-0x000000001BDA0000-0x000000001BE1A000-memory.dmp

Filesize
488KB

Download
memory/4408-45-0x00000000002B0000-0x00000000002C2000-memory.dmp

Filesize
72KB

Download
memory/4408-51-0x00000000053D0000-0x0000000005436000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads