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
behavioral1/files/0x000600000001950c-26.dat	family_asyncrat

Executes dropped EXE 3 IoCs

pid	Process
2936	RunIt.exe
2552	[FATURA] 11.30.2024.pdf.exe
2576	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-1-5-21-2872745919-2748461613-2989606286-1000\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 2 IoCs

Web Service

T1102

flow	ioc
2	5.tcp.eu.ngrok.io
4	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	rat.exe
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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2576	rat.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 2228 wrote to memory of 2936	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	30
PID 2228 wrote to memory of 2936	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	30
PID 2228 wrote to memory of 2936	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	30
PID 2228 wrote to memory of 2936	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	30
PID 2228 wrote to memory of 2552	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	31
PID 2228 wrote to memory of 2552	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	31
PID 2228 wrote to memory of 2552	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	31
PID 2228 wrote to memory of 2552	2228	a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe	31
PID 2552 wrote to memory of 2576	2552	[FATURA] 11.30.2024.pdf.exe	32
PID 2552 wrote to memory of 2576	2552	[FATURA] 11.30.2024.pdf.exe	32
PID 2552 wrote to memory of 2576	2552	[FATURA] 11.30.2024.pdf.exe	32
PID 2552 wrote to memory of 2576	2552	[FATURA] 11.30.2024.pdf.exe	32

C:\Users\Admin\AppData\Local\Temp\a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe
"C:\Users\Admin\AppData\Local\Temp\a027fa726a76a8afcac68958ff7f72d27d2067b9ec4c13d666d5825226821b8c.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2228
- 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:2936
- 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⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - C:\rat.exe
    "C:\rat.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2576

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

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab9149.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
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/2228-5-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2228-3-0x000000001B510000-0x000000001B58A000-memory.dmp

Filesize
488KB

Download
memory/2228-2-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2228-0-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2228-35-0x000007FEF5C53000-0x000007FEF5C54000-memory.dmp

Filesize
4KB

Download
memory/2228-36-0x000007FEF5C50000-0x000007FEF663C000-memory.dmp

Filesize
9.9MB

Download
memory/2228-1-0x0000000000BE0000-0x0000000000C58000-memory.dmp

Filesize
480KB

Download
memory/2576-34-0x0000000000BC0000-0x0000000000BD2000-memory.dmp

Filesize
72KB

Download
memory/2936-17-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/2936-19-0x00000000013B0000-0x00000000013DA000-memory.dmp

Filesize
168KB

Download
memory/2936-37-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads