asyncrat | 8ae63775359fa46ab17567259a6a504c60113868d706c1649b7e404aa0343010

General

Target

0x00090000000122f1-69.exe
Size

45KB
MD5

4b3284d70137fee18f1068d0b3ec3819
SHA1

24a47e72ea5f76bbc37b0281bb24508b631157de
SHA256

8ae63775359fa46ab17567259a6a504c60113868d706c1649b7e404aa0343010
SHA512

693cb57ee01b48daa08c3165187d29aad402e8fe8341e1050c0e6bfc7463b2723a6e5c6af762457cffee8ae2836fb3c7f3a73dfdd1ff50d51abc1e8f970d525d
SSDEEP

768:zuQSNTvEEaBrWUXQd5mo2qmibq/aSh6PIRzjbfgX3imDRq/JyfBDZvx:zuQSNT8542x4qjDR3boXSgRndvx

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

135.148.113.4:6789

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
Service Host.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/780-54-0x0000000001150000-0x0000000001162000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\Service Host.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Service Host.exe	asyncrat
C:\Users\Admin\AppData\Roaming\Service Host.exe	asyncrat
behavioral1/memory/1352-65-0x0000000000880000-0x0000000000892000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

Service Host.exe

pid process

1352 Service Host.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1736 cmd.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

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

1552 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1396 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

0x00090000000122f1-69.exe

pid process

780 0x00090000000122f1-69.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

0x00090000000122f1-69.exeService Host.exe

description pid process

Token: SeDebugPrivilege 780 0x00090000000122f1-69.exe
Token: SeDebugPrivilege 1352 Service Host.exe

pid	process
1352	Service Host.exe

pid	process
1736	cmd.exe

pid	process
1552	schtasks.exe

pid	process
1396	timeout.exe

pid	process
780	0x00090000000122f1-69.exe

description	pid	process
Token: SeDebugPrivilege	780	0x00090000000122f1-69.exe
Token: SeDebugPrivilege	1352	Service Host.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

0x00090000000122f1-69.execmd.execmd.exe

description	pid	process	target process
PID 780 wrote to memory of 948	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 948	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 948	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 948	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 1736	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 1736	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 1736	780	0x00090000000122f1-69.exe	cmd.exe
PID 780 wrote to memory of 1736	780	0x00090000000122f1-69.exe	cmd.exe
PID 948 wrote to memory of 1552	948	cmd.exe	schtasks.exe
PID 948 wrote to memory of 1552	948	cmd.exe	schtasks.exe
PID 948 wrote to memory of 1552	948	cmd.exe	schtasks.exe
PID 948 wrote to memory of 1552	948	cmd.exe	schtasks.exe
PID 1736 wrote to memory of 1396	1736	cmd.exe	timeout.exe
PID 1736 wrote to memory of 1396	1736	cmd.exe	timeout.exe
PID 1736 wrote to memory of 1396	1736	cmd.exe	timeout.exe
PID 1736 wrote to memory of 1396	1736	cmd.exe	timeout.exe
PID 1736 wrote to memory of 1352	1736	cmd.exe	Service Host.exe
PID 1736 wrote to memory of 1352	1736	cmd.exe	Service Host.exe
PID 1736 wrote to memory of 1352	1736	cmd.exe	Service Host.exe
PID 1736 wrote to memory of 1352	1736	cmd.exe	Service Host.exe

C:\Users\Admin\AppData\Local\Temp\0x00090000000122f1-69.exe
"C:\Users\Admin\AppData\Local\Temp\0x00090000000122f1-69.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:780

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Service Host" /tr '"C:\Users\Admin\AppData\Roaming\Service Host.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:948

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "Service Host" /tr '"C:\Users\Admin\AppData\Roaming\Service Host.exe"'
3⤵
- Creates scheduled task(s)
PID:1552

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp974.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1736

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1396

C:\Users\Admin\AppData\Roaming\Service Host.exe
"C:\Users\Admin\AppData\Roaming\Service Host.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1352

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp974.tmp.bat
Filesize
155B

MD5
04bcf54273ced7d069bb58433ec06ac8

SHA1
e4f276bd46211ad73586b7250ba4dd8e8af72d1f

SHA256
f45e7cda5312dc08259fb27bf72dd619de1c0c14c4bdfa8175430e63d7596459

SHA512
533073fc5f17263144e6e882b70bd4f020baecde4c038d3f49cd7e2007178ec2c2b213140865ca694449ba53c290c319d80ea3fa7036548fd36e1988c836b8c8

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

MD5
4b3284d70137fee18f1068d0b3ec3819

SHA1
24a47e72ea5f76bbc37b0281bb24508b631157de

SHA256
8ae63775359fa46ab17567259a6a504c60113868d706c1649b7e404aa0343010

SHA512
693cb57ee01b48daa08c3165187d29aad402e8fe8341e1050c0e6bfc7463b2723a6e5c6af762457cffee8ae2836fb3c7f3a73dfdd1ff50d51abc1e8f970d525d

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

MD5
4b3284d70137fee18f1068d0b3ec3819

SHA1
24a47e72ea5f76bbc37b0281bb24508b631157de

SHA256
8ae63775359fa46ab17567259a6a504c60113868d706c1649b7e404aa0343010

SHA512
693cb57ee01b48daa08c3165187d29aad402e8fe8341e1050c0e6bfc7463b2723a6e5c6af762457cffee8ae2836fb3c7f3a73dfdd1ff50d51abc1e8f970d525d

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

MD5
4b3284d70137fee18f1068d0b3ec3819

SHA1
24a47e72ea5f76bbc37b0281bb24508b631157de

SHA256
8ae63775359fa46ab17567259a6a504c60113868d706c1649b7e404aa0343010

SHA512
693cb57ee01b48daa08c3165187d29aad402e8fe8341e1050c0e6bfc7463b2723a6e5c6af762457cffee8ae2836fb3c7f3a73dfdd1ff50d51abc1e8f970d525d

Download Submit
memory/780-54-0x0000000001150000-0x0000000001162000-memory.dmp

Filesize
72KB

Download
memory/780-55-0x00000000758C1000-0x00000000758C3000-memory.dmp

Filesize
8KB

Download
memory/948-56-0x0000000000000000-mapping.dmp

Download
memory/1352-63-0x0000000000000000-mapping.dmp

Download
memory/1352-65-0x0000000000880000-0x0000000000892000-memory.dmp

Filesize
72KB

Download
memory/1396-60-0x0000000000000000-mapping.dmp

Download
memory/1552-59-0x0000000000000000-mapping.dmp

Download
memory/1736-57-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads