asyncrat | 2bd07e7dea35698892a202c7d1e8c731f4d49db4b92cf96cdf3fdf3e2609d8ee

General

Target

clnt.exe
Size

45KB
MD5

0b70981357d5208a08ed80e1e1f541c5
SHA1

7ab0b2df4ef0673357f7095aa94acb48a654bb35
SHA256

2bd07e7dea35698892a202c7d1e8c731f4d49db4b92cf96cdf3fdf3e2609d8ee
SHA512

027738657c8de6a2fa9a2eb0c9abfb3b9fe2b1212f224a787ad23c1f8bb4f053c464a32a0450227237066b48fe9aab1cadee9102b8fe917ad3188f5a50f45ea3
SSDEEP

768:vuCINTAolrhWU5TeLmo2qrs8V1TG1GcPIozjbbgX3ir+iewBDZXx:vuCINTA2G2J8Vk1Gho3bkXSPemdXx

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:55498

82.197.208.225:55498

192.168.1.186:55498

185.65.134.165:55498

Mutex

xrxservices

Attributes

delay
3
install
true
install_file
service.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 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1704-54-0x0000000000B50000-0x0000000000B62000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\service.exe	asyncrat
C:\Users\Admin\AppData\Roaming\service.exe	asyncrat
C:\Users\Admin\AppData\Roaming\service.exe	asyncrat
behavioral1/memory/1436-68-0x0000000000DE0000-0x0000000000DF2000-memory.dmp	asyncrat
behavioral1/memory/1436-69-0x0000000004F20000-0x0000000004F60000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

service.exe

pid process

1436 service.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1764 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

1496 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1488 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

clnt.exe

pid process

1704 clnt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

clnt.exeservice.exe

description pid process

Token: SeDebugPrivilege 1704 clnt.exe
Token: SeDebugPrivilege 1436 service.exe

pid	process
1436	service.exe

pid	process
1764	cmd.exe

pid	process
1496	schtasks.exe

pid	process
1488	timeout.exe

pid	process
1704	clnt.exe

description	pid	process
Token: SeDebugPrivilege	1704	clnt.exe
Token: SeDebugPrivilege	1436	service.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

clnt.execmd.execmd.exe

description	pid	process	target process
PID 1704 wrote to memory of 848	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 848	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 848	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 848	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 1764	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 1764	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 1764	1704	clnt.exe	cmd.exe
PID 1704 wrote to memory of 1764	1704	clnt.exe	cmd.exe
PID 848 wrote to memory of 1496	848	cmd.exe	schtasks.exe
PID 848 wrote to memory of 1496	848	cmd.exe	schtasks.exe
PID 848 wrote to memory of 1496	848	cmd.exe	schtasks.exe
PID 848 wrote to memory of 1496	848	cmd.exe	schtasks.exe
PID 1764 wrote to memory of 1488	1764	cmd.exe	timeout.exe
PID 1764 wrote to memory of 1488	1764	cmd.exe	timeout.exe
PID 1764 wrote to memory of 1488	1764	cmd.exe	timeout.exe
PID 1764 wrote to memory of 1488	1764	cmd.exe	timeout.exe
PID 1764 wrote to memory of 1436	1764	cmd.exe	service.exe
PID 1764 wrote to memory of 1436	1764	cmd.exe	service.exe
PID 1764 wrote to memory of 1436	1764	cmd.exe	service.exe
PID 1764 wrote to memory of 1436	1764	cmd.exe	service.exe

C:\Users\Admin\AppData\Local\Temp\clnt.exe
"C:\Users\Admin\AppData\Local\Temp\clnt.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1704

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "service" /tr '"C:\Users\Admin\AppData\Roaming\service.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "service" /tr '"C:\Users\Admin\AppData\Roaming\service.exe"'
3⤵
- Creates scheduled task(s)
PID:1496

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp207D.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1764

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1488

C:\Users\Admin\AppData\Roaming\service.exe
"C:\Users\Admin\AppData\Roaming\service.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1436

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp207D.tmp.bat
Filesize
151B

MD5
b255ac4576940542511f99dd76f0ab9f

SHA1
a75bbf179794f8727a2242b83e0246d619e0a036

SHA256
a764c6f1699b4d8df573b7c83185a624e4b64aadc991a4af4f2159162e7f8255

SHA512
96f76e1e35a3685856510d71bd8d13546e85c6e0d3a1f856307490db07858477f8f5b247e66202b7041abb6565483e8101b9ea3ee512c0cbffde9790d089a79e

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp207D.tmp.bat
Filesize
151B

MD5
b255ac4576940542511f99dd76f0ab9f

SHA1
a75bbf179794f8727a2242b83e0246d619e0a036

SHA256
a764c6f1699b4d8df573b7c83185a624e4b64aadc991a4af4f2159162e7f8255

SHA512
96f76e1e35a3685856510d71bd8d13546e85c6e0d3a1f856307490db07858477f8f5b247e66202b7041abb6565483e8101b9ea3ee512c0cbffde9790d089a79e

Download Submit
C:\Users\Admin\AppData\Roaming\service.exe
Filesize
45KB

MD5
0b70981357d5208a08ed80e1e1f541c5

SHA1
7ab0b2df4ef0673357f7095aa94acb48a654bb35

SHA256
2bd07e7dea35698892a202c7d1e8c731f4d49db4b92cf96cdf3fdf3e2609d8ee

SHA512
027738657c8de6a2fa9a2eb0c9abfb3b9fe2b1212f224a787ad23c1f8bb4f053c464a32a0450227237066b48fe9aab1cadee9102b8fe917ad3188f5a50f45ea3

Download Submit
C:\Users\Admin\AppData\Roaming\service.exe
Filesize
45KB

MD5
0b70981357d5208a08ed80e1e1f541c5

SHA1
7ab0b2df4ef0673357f7095aa94acb48a654bb35

SHA256
2bd07e7dea35698892a202c7d1e8c731f4d49db4b92cf96cdf3fdf3e2609d8ee

SHA512
027738657c8de6a2fa9a2eb0c9abfb3b9fe2b1212f224a787ad23c1f8bb4f053c464a32a0450227237066b48fe9aab1cadee9102b8fe917ad3188f5a50f45ea3

Download Submit
\Users\Admin\AppData\Roaming\service.exe
Filesize
45KB

MD5
0b70981357d5208a08ed80e1e1f541c5

SHA1
7ab0b2df4ef0673357f7095aa94acb48a654bb35

SHA256
2bd07e7dea35698892a202c7d1e8c731f4d49db4b92cf96cdf3fdf3e2609d8ee

SHA512
027738657c8de6a2fa9a2eb0c9abfb3b9fe2b1212f224a787ad23c1f8bb4f053c464a32a0450227237066b48fe9aab1cadee9102b8fe917ad3188f5a50f45ea3

Download Submit
memory/1436-68-0x0000000000DE0000-0x0000000000DF2000-memory.dmp

Filesize
72KB

Download
memory/1436-69-0x0000000004F20000-0x0000000004F60000-memory.dmp

Filesize
256KB

Download
memory/1436-70-0x0000000004F20000-0x0000000004F60000-memory.dmp

Filesize
256KB

Download
memory/1704-54-0x0000000000B50000-0x0000000000B62000-memory.dmp

Filesize
72KB

Download
memory/1704-55-0x0000000004CE0000-0x0000000004D20000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads