asyncrat | ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c

General

Target

Server.exe
Size

45KB
MD5

d3bb7d0cce1e7a1a1884f25d2a5370d2
SHA1

ebc5d5104e8de6a53aef7f5d50f44925070a4085
SHA256

ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c
SHA512

dcc630bd534043caf4c54e5da7fe2daccc64e213b0d2f4dd8bbc13174de3768802e1ea603a1f0584687d0d20d750e96dcd9ec2b46401a442d6a3943972142e06
SSDEEP

768:hu4f9TskvpDWUPANxmo2qbgY8Vq0H9OPIozjbmgX3iEzO/uoXXgxMqJvsZzBDZ7r:hu4f9TswI27ss3o3b5XS8O/XJ7d7r

Score

10^/10

asyncrat services discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

services

C2

shadowdx.duckdns.org:8808

Mutex

windows services

Attributes

delay
3
install
true
install_file
services.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/0x000b000000012262-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2668	services.exe

Loads dropped DLL 1 IoCs

pid	Process
2704	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	Server.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	services.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2692	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
2948	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2184	Server.exe
2184	Server.exe
2184	Server.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2184	Server.exe
Token: SeDebugPrivilege	2668	services.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2812	2184	Server.exe	30
PID 2184 wrote to memory of 2812	2184	Server.exe	30
PID 2184 wrote to memory of 2812	2184	Server.exe	30
PID 2184 wrote to memory of 2812	2184	Server.exe	30
PID 2184 wrote to memory of 2704	2184	Server.exe	32
PID 2184 wrote to memory of 2704	2184	Server.exe	32
PID 2184 wrote to memory of 2704	2184	Server.exe	32
PID 2184 wrote to memory of 2704	2184	Server.exe	32
PID 2812 wrote to memory of 2948	2812	cmd.exe	34
PID 2812 wrote to memory of 2948	2812	cmd.exe	34
PID 2812 wrote to memory of 2948	2812	cmd.exe	34
PID 2812 wrote to memory of 2948	2812	cmd.exe	34
PID 2704 wrote to memory of 2692	2704	cmd.exe	35
PID 2704 wrote to memory of 2692	2704	cmd.exe	35
PID 2704 wrote to memory of 2692	2704	cmd.exe	35
PID 2704 wrote to memory of 2692	2704	cmd.exe	35
PID 2704 wrote to memory of 2668	2704	cmd.exe	36
PID 2704 wrote to memory of 2668	2704	cmd.exe	36
PID 2704 wrote to memory of 2668	2704	cmd.exe	36
PID 2704 wrote to memory of 2668	2704	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\Server.exe
"C:\Users\Admin\AppData\Local\Temp\Server.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "services" /tr '"C:\Users\Admin\AppData\Roaming\services.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2812
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "services" /tr '"C:\Users\Admin\AppData\Roaming\services.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2948
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6C98.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2704
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2692
- - C:\Users\Admin\AppData\Roaming\services.exe
    "C:\Users\Admin\AppData\Roaming\services.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2668

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\tmp6C98.tmp.bat

Filesize
152B

MD5
a42e9fe8fce62bcb9997bee1c155a7d9

SHA1
f8bfd893acdb408a569f482fcd60ea807cc062a3

SHA256
ed550b2b03ad1a9b784dd41f064ca7447fcd239bfddde61e752957e216938e06

SHA512
f813e6396a0bc1c7181ff1227f17b0844f6beaf61956e6eb002206f96e35f4db19ae875fc080230dd0c473de3d7c1b4b97b216818982182f77489e68a7ae0b95

Download Submit
\Users\Admin\AppData\Roaming\services.exe

Filesize
45KB

MD5
d3bb7d0cce1e7a1a1884f25d2a5370d2

SHA1
ebc5d5104e8de6a53aef7f5d50f44925070a4085

SHA256
ea568b732e66798cdc9f97f736cc77142d08e1996b7f5d6a996d9b941083e03c

SHA512
dcc630bd534043caf4c54e5da7fe2daccc64e213b0d2f4dd8bbc13174de3768802e1ea603a1f0584687d0d20d750e96dcd9ec2b46401a442d6a3943972142e06

Download Submit
memory/2184-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2184-1-0x0000000000920000-0x0000000000932000-memory.dmp

Filesize
72KB

Download
memory/2184-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2184-12-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2668-16-0x0000000000F90000-0x0000000000FA2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads