asyncrat | 85a8267c923fccae9397ee2f05dead67d8877145b175f6836940a28fa96ca4ae

General

Target

eeeeeeeeeeeeeeeeeeeee.exe
Size

47KB
MD5

70dea4658bea5bf00ef8c0578693d6fa
SHA1

814cf65c3cc2394a8a2bab4997f28c46f1976e41
SHA256

85a8267c923fccae9397ee2f05dead67d8877145b175f6836940a28fa96ca4ae
SHA512

348990ee46dc1d19b7a697b81949b22dbca9af203d9ba2cb06036f82cace988b160a3a45193abf67f014ea2c44db9c4540771c8d4f179f9991cf8754ec563e39
SSDEEP

768:gusPr1TUq7qMFPWUDVGotmo2qzY5HCdS7eU/t+PIG+BXqm0b6nu4tqCy1cftNBDc:gusj1TUfMso2VJT7vtHGK8b6nltWcfRY

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:80

Mutex

wpqzdX1ij9YS

Attributes

delay
3
install
true
install_file
aa.exe
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/0x0007000000018731-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2800	aa.exe

Loads dropped DLL 1 IoCs

pid	Process
1900	cmd.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 6 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	aa.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eeeeeeeeeeeeeeeeeeeee.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2092	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
484	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3052	eeeeeeeeeeeeeeeeeeeee.exe
3052	eeeeeeeeeeeeeeeeeeeee.exe
3052	eeeeeeeeeeeeeeeeeeeee.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3052	eeeeeeeeeeeeeeeeeeeee.exe
Token: SeDebugPrivilege	2800	aa.exe
Token: SeDebugPrivilege	2800	aa.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3052 wrote to memory of 2396	3052	eeeeeeeeeeeeeeeeeeeee.exe	31
PID 3052 wrote to memory of 2396	3052	eeeeeeeeeeeeeeeeeeeee.exe	31
PID 3052 wrote to memory of 2396	3052	eeeeeeeeeeeeeeeeeeeee.exe	31
PID 3052 wrote to memory of 2396	3052	eeeeeeeeeeeeeeeeeeeee.exe	31
PID 3052 wrote to memory of 1900	3052	eeeeeeeeeeeeeeeeeeeee.exe	33
PID 3052 wrote to memory of 1900	3052	eeeeeeeeeeeeeeeeeeeee.exe	33
PID 3052 wrote to memory of 1900	3052	eeeeeeeeeeeeeeeeeeeee.exe	33
PID 3052 wrote to memory of 1900	3052	eeeeeeeeeeeeeeeeeeeee.exe	33
PID 2396 wrote to memory of 484	2396	cmd.exe	35
PID 2396 wrote to memory of 484	2396	cmd.exe	35
PID 2396 wrote to memory of 484	2396	cmd.exe	35
PID 2396 wrote to memory of 484	2396	cmd.exe	35
PID 1900 wrote to memory of 2092	1900	cmd.exe	36
PID 1900 wrote to memory of 2092	1900	cmd.exe	36
PID 1900 wrote to memory of 2092	1900	cmd.exe	36
PID 1900 wrote to memory of 2092	1900	cmd.exe	36
PID 1900 wrote to memory of 2800	1900	cmd.exe	37
PID 1900 wrote to memory of 2800	1900	cmd.exe	37
PID 1900 wrote to memory of 2800	1900	cmd.exe	37
PID 1900 wrote to memory of 2800	1900	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\eeeeeeeeeeeeeeeeeeeee.exe
"C:\Users\Admin\AppData\Local\Temp\eeeeeeeeeeeeeeeeeeeee.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "aa" /tr '"C:\Users\Admin\AppData\Roaming\aa.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:484
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC957.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1900
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2092
- - C:\Users\Admin\AppData\Roaming\aa.exe
    "C:\Users\Admin\AppData\Roaming\aa.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2800

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpC957.tmp.bat

Filesize
146B

MD5
e01055bc6c9b5cc5e5fdb4e44c7bf1a0

SHA1
d3db1ef46744315bb0127f2dcfb76c63fa00e171

SHA256
fa5c31839bcbeec1197211477da019a1d7a05327b57cfcab23c5f51f00888a86

SHA512
09ac464d82ef95f5837d0d28316bf1f5a814dfcdf324029feb598b15d44ed2dd8488c1c30937c24df4141d2e283af49a236a123da24dd8f7a4762dc06e01db66

Download Submit
C:\Users\Admin\AppData\Roaming\aa.exe

Filesize
47KB

MD5
70dea4658bea5bf00ef8c0578693d6fa

SHA1
814cf65c3cc2394a8a2bab4997f28c46f1976e41

SHA256
85a8267c923fccae9397ee2f05dead67d8877145b175f6836940a28fa96ca4ae

SHA512
348990ee46dc1d19b7a697b81949b22dbca9af203d9ba2cb06036f82cace988b160a3a45193abf67f014ea2c44db9c4540771c8d4f179f9991cf8754ec563e39

Download Submit
memory/2800-16-0x00000000002B0000-0x00000000002C2000-memory.dmp

Filesize
72KB

Download
memory/3052-0-0x000000007454E000-0x000000007454F000-memory.dmp

Filesize
4KB

Download
memory/3052-1-0x0000000001310000-0x0000000001322000-memory.dmp

Filesize
72KB

Download
memory/3052-2-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download
memory/3052-12-0x0000000074540000-0x0000000074C2E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads