asyncrat | 0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

General

Target

dll-cleaned.exe
Size

130KB
MD5

691502fd02493f30d58d7802e1f2db41
SHA1

e23da718103e8653f3923e40c819ffa8b0896ce8
SHA256

0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82
SHA512

4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

C2

23112020.ddns.net:1231

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
tSTqwE1Vnue4SH2KuKjIVUBSuPclsXSq
anti_detection
false
autorun
true
bdos
false
delay
Default
host
23112020.ddns.net
hwid
3
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
1231
version
0.5.7B

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1072-5-0x0000000000200000-0x000000000020C000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

svchost.exe

pid process

1604 svchost.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1664 cmd.exe
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

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

Processes:

timeout.exe

pid process

860 timeout.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

dll-cleaned.exe

pid process

1072 dll-cleaned.exe
1072 dll-cleaned.exe
1072 dll-cleaned.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

dll-cleaned.exesvchost.exe

description pid process

Token: SeDebugPrivilege 1072 dll-cleaned.exe
Token: SeDebugPrivilege 1604 svchost.exe

pid	process
1604	svchost.exe

pid	process
1664	cmd.exe

pid	process
756	schtasks.exe

pid	process
860	timeout.exe

pid	process
1072	dll-cleaned.exe
1072	dll-cleaned.exe
1072	dll-cleaned.exe

description	pid	process
Token: SeDebugPrivilege	1072	dll-cleaned.exe
Token: SeDebugPrivilege	1604	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

dll-cleaned.execmd.execmd.exe

description	pid	process	target process
PID 1072 wrote to memory of 1020	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1020	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1020	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1020	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1664	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1664	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1664	1072	dll-cleaned.exe	cmd.exe
PID 1072 wrote to memory of 1664	1072	dll-cleaned.exe	cmd.exe
PID 1020 wrote to memory of 756	1020	cmd.exe	schtasks.exe
PID 1020 wrote to memory of 756	1020	cmd.exe	schtasks.exe
PID 1020 wrote to memory of 756	1020	cmd.exe	schtasks.exe
PID 1020 wrote to memory of 756	1020	cmd.exe	schtasks.exe
PID 1664 wrote to memory of 860	1664	cmd.exe	timeout.exe
PID 1664 wrote to memory of 860	1664	cmd.exe	timeout.exe
PID 1664 wrote to memory of 860	1664	cmd.exe	timeout.exe
PID 1664 wrote to memory of 860	1664	cmd.exe	timeout.exe
PID 1664 wrote to memory of 1604	1664	cmd.exe	svchost.exe
PID 1664 wrote to memory of 1604	1664	cmd.exe	svchost.exe
PID 1664 wrote to memory of 1604	1664	cmd.exe	svchost.exe
PID 1664 wrote to memory of 1604	1664	cmd.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\dll-cleaned.exe
"C:\Users\Admin\AppData\Local\Temp\dll-cleaned.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1072

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1020

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
3⤵
- Creates scheduled task(s)
PID:756

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp755E.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1664

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:860

C:\Users\Admin\AppData\Roaming\svchost.exe
"C:\Users\Admin\AppData\Roaming\svchost.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:1604

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

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp755E.tmp.bat
MD5
5d10041e0dd268a80c6670a4131fdef6

SHA1
35d6836c2207b1a01e3a5d33a066e4df7871891b

SHA256
a65500c53d32037d1d4e32fd883980da5ee4880f6aff02d208fb4710e251ad90

SHA512
944a48584a98327b8f454056bf5e49eced0387693e925f853fbea7bfec83af8c42be62ec55252b2b6ab81345c0a2c37c8ebe3a83e1de9b66da71e8dc5b89ecc8

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
691502fd02493f30d58d7802e1f2db41

SHA1
e23da718103e8653f3923e40c819ffa8b0896ce8

SHA256
0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

SHA512
4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Download Submit
C:\Users\Admin\AppData\Roaming\svchost.exe
MD5
691502fd02493f30d58d7802e1f2db41

SHA1
e23da718103e8653f3923e40c819ffa8b0896ce8

SHA256
0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

SHA512
4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Download Submit
\Users\Admin\AppData\Roaming\svchost.exe
MD5
691502fd02493f30d58d7802e1f2db41

SHA1
e23da718103e8653f3923e40c819ffa8b0896ce8

SHA256
0388cc1f9283d7588c11c2a29f3b8558f588811449f32ebff5e5ebf931ffeb82

SHA512
4c799b7538fbed61f2d2b59964ee50896619d24421c483805209ef5e53b2604d760cd49a80424c53c7d5c89dd630ab26a7ab509df1fe0699ab42353c966c71e7

Download Submit
memory/756-9-0x0000000000000000-mapping.dmp

Download
memory/860-10-0x0000000000000000-mapping.dmp

Download
memory/1020-6-0x0000000000000000-mapping.dmp

Download
memory/1072-2-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1072-5-0x0000000000200000-0x000000000020C000-memory.dmp

Filesize
48KB

Download
memory/1072-3-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1604-13-0x0000000000000000-mapping.dmp

Download
memory/1604-15-0x0000000074690000-0x0000000074D7E000-memory.dmp

Filesize
6.9MB

Download
memory/1604-16-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/1664-7-0x0000000000000000-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