asyncrat | de3e68021cc2c807e4c0297ab277396acd8a8939031bab33a7b72323b90f3f81

General

Target

AsyncClient.exe
Size

45KB
MD5

26e9b2f985b2680cf1a1881bd5e23b4e
SHA1

8af6aa09c15ac2947666a6f8778f75da4bfbcb1c
SHA256

de3e68021cc2c807e4c0297ab277396acd8a8939031bab33a7b72323b90f3f81
SHA512

964803e4a82111ee7fd3648b9fc1d3d3260a43f2282d27ed4789f90060a8f240bece4712ee9c74004a5b7b1bd91fbce90c13709269d3e07b27c360e039aef7da
SSDEEP

768:KuETKT0k3qXWUrV6e1mo2qyIQKjPGaG6PIyzjbFgX3ilHt7MPbCiMGYkZaOwpo4+:KuETKT0cE2/1KTkDy3bCXSRt7AmGYmau

Score

10^/10

asyncrat realxworm discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

realxworm

C2

147.185.221.20:9835

147.185.221.20:18563

Mutex

eCCoCTFPGVfF

Attributes

delay
3
install
true
install_file
ToiletRizz.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/0x0009000000012286-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2848	ToiletRizz.exe

Loads dropped DLL 1 IoCs

pid	Process
2736	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	ToiletRizz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AsyncClient.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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2792	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
2824	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2964	AsyncClient.exe
2964	AsyncClient.exe
2964	AsyncClient.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2964	AsyncClient.exe
Token: SeDebugPrivilege	2848	ToiletRizz.exe
Token: SeDebugPrivilege	2848	ToiletRizz.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2964 wrote to memory of 2904	2964	AsyncClient.exe	31
PID 2964 wrote to memory of 2904	2964	AsyncClient.exe	31
PID 2964 wrote to memory of 2904	2964	AsyncClient.exe	31
PID 2964 wrote to memory of 2904	2964	AsyncClient.exe	31
PID 2964 wrote to memory of 2736	2964	AsyncClient.exe	33
PID 2964 wrote to memory of 2736	2964	AsyncClient.exe	33
PID 2964 wrote to memory of 2736	2964	AsyncClient.exe	33
PID 2964 wrote to memory of 2736	2964	AsyncClient.exe	33
PID 2904 wrote to memory of 2824	2904	cmd.exe	35
PID 2904 wrote to memory of 2824	2904	cmd.exe	35
PID 2904 wrote to memory of 2824	2904	cmd.exe	35
PID 2904 wrote to memory of 2824	2904	cmd.exe	35
PID 2736 wrote to memory of 2792	2736	cmd.exe	36
PID 2736 wrote to memory of 2792	2736	cmd.exe	36
PID 2736 wrote to memory of 2792	2736	cmd.exe	36
PID 2736 wrote to memory of 2792	2736	cmd.exe	36
PID 2736 wrote to memory of 2848	2736	cmd.exe	37
PID 2736 wrote to memory of 2848	2736	cmd.exe	37
PID 2736 wrote to memory of 2848	2736	cmd.exe	37
PID 2736 wrote to memory of 2848	2736	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "ToiletRizz" /tr '"C:\Users\Admin\AppData\Roaming\ToiletRizz.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2904
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "ToiletRizz" /tr '"C:\Users\Admin\AppData\Roaming\ToiletRizz.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2824
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB08A.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2736
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2792
- - C:\Users\Admin\AppData\Roaming\ToiletRizz.exe
    "C:\Users\Admin\AppData\Roaming\ToiletRizz.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2848

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\Cab9AFA.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB08A.tmp.bat

Filesize
154B

MD5
9b4c8955eb5fa8f5b422913309078013

SHA1
e86c07b72521386f2ab20df38df73587ce1c162d

SHA256
3d20903828b1eb0b83750dee9ffda1ad61a8beb30f44dea583cb93c8b15bfbe5

SHA512
a7c3ee1538bba4f191fb74c8149b0fdea3dcc0d63a45ac9a89dc5384977ce57dc03bb4f4d43f4025f4523df2f357c6c0a950c1919c5e84929b970382c0649463

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

Filesize
45KB

MD5
26e9b2f985b2680cf1a1881bd5e23b4e

SHA1
8af6aa09c15ac2947666a6f8778f75da4bfbcb1c

SHA256
de3e68021cc2c807e4c0297ab277396acd8a8939031bab33a7b72323b90f3f81

SHA512
964803e4a82111ee7fd3648b9fc1d3d3260a43f2282d27ed4789f90060a8f240bece4712ee9c74004a5b7b1bd91fbce90c13709269d3e07b27c360e039aef7da

Download Submit
memory/2848-16-0x00000000000D0000-0x00000000000E2000-memory.dmp

Filesize
72KB

Download
memory/2964-0-0x000000007455E000-0x000000007455F000-memory.dmp

Filesize
4KB

Download
memory/2964-1-0x0000000000840000-0x0000000000852000-memory.dmp

Filesize
72KB

Download
memory/2964-2-0x0000000074550000-0x0000000074C3E000-memory.dmp

Filesize
6.9MB

Download
memory/2964-11-0x0000000074550000-0x0000000074C3E000-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