asyncrat | f2451118fa6c3e2c0f09e71c60cf29021f0736c47abd236e892f33ccb2ddd98e

General

Target

THISISARAT.exe
Size

47KB
MD5

4744dae074b1b9c94c131aefa1f3827c
SHA1

927c9ae343d07004ea1a618a0ef228a26649eb92
SHA256

f2451118fa6c3e2c0f09e71c60cf29021f0736c47abd236e892f33ccb2ddd98e
SHA512

4211db34221c07b5842f6fdbfa83be11861d28ab1036224a0a8b7f695a8bf1c78422c86685cfa9cef6c503d9638d4420418c180870202c1de1766435a58c0be6
SSDEEP

768:xuETKT0k3qXWUrV6e1mo2qyI/L8CX5a15WSPImqMaHnQ0b9V6KySeZ19X6Qs2mP9:xuETKT0cE2/CL8S5C5W7mqMgn7b9WZ1Q

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

Mutex

5Lk431gyJhat

Attributes

delay
3
install
true
install_file
THISISARAT.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

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\THISISARAT.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

THISISARAT.exe

pid process

2672 THISISARAT.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2676 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2672	THISISARAT.exe

pid	process
2676	cmd.exe

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

Processes:

timeout.exeTHISISARAT.exeTHISISARAT.execmd.exeschtasks.execmd.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	THISISARAT.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	THISISARAT.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	cmd.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2928 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

Processes:

schtasks.exe

pid process

2152 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

THISISARAT.exe

pid process

2688 THISISARAT.exe
2688 THISISARAT.exe
2688 THISISARAT.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

THISISARAT.exeTHISISARAT.exe

description pid process

Token: SeDebugPrivilege 2688 THISISARAT.exe
Token: SeDebugPrivilege 2672 THISISARAT.exe

pid	process
2928	timeout.exe

pid	process
2152	schtasks.exe

pid	process
2688	THISISARAT.exe
2688	THISISARAT.exe
2688	THISISARAT.exe

description	pid	process
Token: SeDebugPrivilege	2688	THISISARAT.exe
Token: SeDebugPrivilege	2672	THISISARAT.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

THISISARAT.execmd.execmd.exe

description	pid	process	target process
PID 2688 wrote to memory of 2712	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2712	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2712	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2712	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2676	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2676	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2676	2688	THISISARAT.exe	cmd.exe
PID 2688 wrote to memory of 2676	2688	THISISARAT.exe	cmd.exe
PID 2712 wrote to memory of 2152	2712	cmd.exe	schtasks.exe
PID 2712 wrote to memory of 2152	2712	cmd.exe	schtasks.exe
PID 2712 wrote to memory of 2152	2712	cmd.exe	schtasks.exe
PID 2712 wrote to memory of 2152	2712	cmd.exe	schtasks.exe
PID 2676 wrote to memory of 2928	2676	cmd.exe	timeout.exe
PID 2676 wrote to memory of 2928	2676	cmd.exe	timeout.exe
PID 2676 wrote to memory of 2928	2676	cmd.exe	timeout.exe
PID 2676 wrote to memory of 2928	2676	cmd.exe	timeout.exe
PID 2676 wrote to memory of 2672	2676	cmd.exe	THISISARAT.exe
PID 2676 wrote to memory of 2672	2676	cmd.exe	THISISARAT.exe
PID 2676 wrote to memory of 2672	2676	cmd.exe	THISISARAT.exe
PID 2676 wrote to memory of 2672	2676	cmd.exe	THISISARAT.exe

C:\Users\Admin\AppData\Local\Temp\THISISARAT.exe
"C:\Users\Admin\AppData\Local\Temp\THISISARAT.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2688

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "THISISARAT" /tr '"C:\Users\Admin\AppData\Roaming\THISISARAT.exe"' & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2712

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "THISISARAT" /tr '"C:\Users\Admin\AppData\Roaming\THISISARAT.exe"'
3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2152

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF47C.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2676

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2928

C:\Users\Admin\AppData\Roaming\THISISARAT.exe
"C:\Users\Admin\AppData\Roaming\THISISARAT.exe"
3⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:2672

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\tmpF47C.tmp.bat

Filesize
154B

MD5
54c7c7f3e29029b79b1f4059e680b6a1

SHA1
84cbe93332584996acb393dd1b3376014d62e7d5

SHA256
a381a3137606767407f1d167e66664a4ee72586d203aef7fb74a325326a5f99d

SHA512
429ff25863ec7552b5743e5d8cc10d859a69fc001431c8dcf63ebf25cb4a5c2e95687c03d3cb77e0c646a5fc4568072d182592e84f3d8cbc4233fbea08eb1ed7

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

Filesize
47KB

MD5
4744dae074b1b9c94c131aefa1f3827c

SHA1
927c9ae343d07004ea1a618a0ef228a26649eb92

SHA256
f2451118fa6c3e2c0f09e71c60cf29021f0736c47abd236e892f33ccb2ddd98e

SHA512
4211db34221c07b5842f6fdbfa83be11861d28ab1036224a0a8b7f695a8bf1c78422c86685cfa9cef6c503d9638d4420418c180870202c1de1766435a58c0be6

Download Submit
memory/2672-16-0x0000000000C80000-0x0000000000C92000-memory.dmp

Filesize
72KB

Download
memory/2688-0-0x000000007435E000-0x000000007435F000-memory.dmp

Filesize
4KB

Download
memory/2688-1-0x0000000000C20000-0x0000000000C32000-memory.dmp

Filesize
72KB

Download
memory/2688-2-0x0000000074350000-0x0000000074A3E000-memory.dmp

Filesize
6.9MB

Download
memory/2688-11-0x0000000074350000-0x0000000074A3E000-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