asyncrat | 094b57a07096fb1f866a104c0b14c84aa99815b613587780765c8c6cd6ef1a42

General

Target

AsyncClient.exe
Size

45KB
MD5

7baa4836bd81113c16960501f679a81b
SHA1

007416f9ba10d2e2951a9dcd104b7206ad20d433
SHA256

094b57a07096fb1f866a104c0b14c84aa99815b613587780765c8c6cd6ef1a42
SHA512

988035fbecccadab900f3a6bf2936b5241fa197956286c135a3921370b153e4a12fced55c7cd1760889dd63f970f3b5c37c890aa9e45fbd6afa52934face1079
SSDEEP

768:bum8n1TQwtPtWUN01nmo2qzPKjGKG6PIyzjbFgX3irARm3OCkgCdqTHBDZ3x:bum81TQq426KYDy3bCXSrARmeCkgmqTB

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

62.37.96.229:30120

192.168.1.114:30120

Mutex

6SI8OkPnk

Attributes

delay
3
install
true
install_file
RedEngine.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/1048-54-0x0000000000E00000-0x0000000000E12000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\RedEngine.exe	asyncrat
C:\Users\Admin\AppData\Roaming\RedEngine.exe	asyncrat
C:\Users\Admin\AppData\Roaming\RedEngine.exe	asyncrat
behavioral1/memory/1980-65-0x0000000000CA0000-0x0000000000CB2000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

RedEngine.exe

pid process

1980 RedEngine.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1356 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

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

Processes:

timeout.exe

pid process

1136 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

AsyncClient.exe

pid process

1048 AsyncClient.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

AsyncClient.exeRedEngine.exe

description pid process

Token: SeDebugPrivilege 1048 AsyncClient.exe
Token: SeDebugPrivilege 1980 RedEngine.exe

pid	process
1980	RedEngine.exe

pid	process
1356	cmd.exe

pid	process
836	schtasks.exe

pid	process
1136	timeout.exe

pid	process
1048	AsyncClient.exe

description	pid	process
Token: SeDebugPrivilege	1048	AsyncClient.exe
Token: SeDebugPrivilege	1980	RedEngine.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

AsyncClient.execmd.execmd.exe

description	pid	process	target process
PID 1048 wrote to memory of 1508	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1508	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1508	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1508	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1356	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1356	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1356	1048	AsyncClient.exe	cmd.exe
PID 1048 wrote to memory of 1356	1048	AsyncClient.exe	cmd.exe
PID 1508 wrote to memory of 836	1508	cmd.exe	schtasks.exe
PID 1508 wrote to memory of 836	1508	cmd.exe	schtasks.exe
PID 1508 wrote to memory of 836	1508	cmd.exe	schtasks.exe
PID 1508 wrote to memory of 836	1508	cmd.exe	schtasks.exe
PID 1356 wrote to memory of 1136	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 1136	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 1136	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 1136	1356	cmd.exe	timeout.exe
PID 1356 wrote to memory of 1980	1356	cmd.exe	RedEngine.exe
PID 1356 wrote to memory of 1980	1356	cmd.exe	RedEngine.exe
PID 1356 wrote to memory of 1980	1356	cmd.exe	RedEngine.exe
PID 1356 wrote to memory of 1980	1356	cmd.exe	RedEngine.exe

C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe
"C:\Users\Admin\AppData\Local\Temp\AsyncClient.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1048

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RedEngine" /tr '"C:\Users\Admin\AppData\Roaming\RedEngine.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1508

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "RedEngine" /tr '"C:\Users\Admin\AppData\Roaming\RedEngine.exe"'
3⤵
- Creates scheduled task(s)
PID:836

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp19F7.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1356

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1136

C:\Users\Admin\AppData\Roaming\RedEngine.exe
"C:\Users\Admin\AppData\Roaming\RedEngine.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1980

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\tmp19F7.tmp.bat
Filesize
153B

MD5
21ae8b96a0ca61b5703c91b9ed86f3c4

SHA1
fa9741169c50e97f451bcdddccd45b37cd38bf16

SHA256
7a77cdef57e0d9255fb432f608f7ce838dd9f868ded839957f602b8104f27293

SHA512
b9332e77a517e689a0d3c86022136d81069df535b2282273a26ddc4a0d5946ed826da663508765a6f281ebf3f11aece82788f90539d67b705f0a255b3a1e535d

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

MD5
7baa4836bd81113c16960501f679a81b

SHA1
007416f9ba10d2e2951a9dcd104b7206ad20d433

SHA256
094b57a07096fb1f866a104c0b14c84aa99815b613587780765c8c6cd6ef1a42

SHA512
988035fbecccadab900f3a6bf2936b5241fa197956286c135a3921370b153e4a12fced55c7cd1760889dd63f970f3b5c37c890aa9e45fbd6afa52934face1079

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

MD5
7baa4836bd81113c16960501f679a81b

SHA1
007416f9ba10d2e2951a9dcd104b7206ad20d433

SHA256
094b57a07096fb1f866a104c0b14c84aa99815b613587780765c8c6cd6ef1a42

SHA512
988035fbecccadab900f3a6bf2936b5241fa197956286c135a3921370b153e4a12fced55c7cd1760889dd63f970f3b5c37c890aa9e45fbd6afa52934face1079

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

MD5
7baa4836bd81113c16960501f679a81b

SHA1
007416f9ba10d2e2951a9dcd104b7206ad20d433

SHA256
094b57a07096fb1f866a104c0b14c84aa99815b613587780765c8c6cd6ef1a42

SHA512
988035fbecccadab900f3a6bf2936b5241fa197956286c135a3921370b153e4a12fced55c7cd1760889dd63f970f3b5c37c890aa9e45fbd6afa52934face1079

Download Submit
memory/836-59-0x0000000000000000-mapping.dmp

Download
memory/1048-54-0x0000000000E00000-0x0000000000E12000-memory.dmp

Filesize
72KB

Download
memory/1048-55-0x0000000076171000-0x0000000076173000-memory.dmp

Filesize
8KB

Download
memory/1136-60-0x0000000000000000-mapping.dmp

Download
memory/1356-57-0x0000000000000000-mapping.dmp

Download
memory/1508-56-0x0000000000000000-mapping.dmp

Download
memory/1980-63-0x0000000000000000-mapping.dmp

Download
memory/1980-65-0x0000000000CA0000-0x0000000000CB2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads