asyncrat | 367286675076c14b4d7adedc674cd1902200003f703975bbfae71f5dfcdc18a6

General

Target

5bc149b7d429710d7539e6de3b655a11.exe
Size

208KB
MD5

5bc149b7d429710d7539e6de3b655a11
SHA1

7e32474bb18bad87408c0e8379acf563224dd5f4
SHA256

367286675076c14b4d7adedc674cd1902200003f703975bbfae71f5dfcdc18a6
SHA512

3a08d5571f4b0ce71a5d92a459b465c04d91a55abbf0ca5ebfc1d888ba10c1f50f0f5ec5ad8e1619d8403af154fd2af3536c26a7ca5d2a61fbee1028421f6648
SSDEEP

1536:sugPNTcI42LJ0dU33bIXSXLlgR6MdDID9tn4ICYlx:sug1TcI42LKG33bIJRNVW9tn4IDlx

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

2.59.119.84:7943

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
zula.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/564-54-0x0000000000D30000-0x0000000000D6A000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\zula.exe	asyncrat
C:\Users\Admin\AppData\Roaming\zula.exe	asyncrat
C:\Users\Admin\AppData\Roaming\zula.exe	asyncrat
behavioral1/memory/960-65-0x00000000000C0000-0x00000000000FA000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

zula.exe

pid process

960 zula.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

1940 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

1224 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1448 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

5bc149b7d429710d7539e6de3b655a11.exe

pid process

564 5bc149b7d429710d7539e6de3b655a11.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

5bc149b7d429710d7539e6de3b655a11.exezula.exe

description pid process

Token: SeDebugPrivilege 564 5bc149b7d429710d7539e6de3b655a11.exe
Token: SeDebugPrivilege 960 zula.exe

pid	process
960	zula.exe

pid	process
1940	cmd.exe

pid	process
1224	schtasks.exe

pid	process
1448	timeout.exe

pid	process
564	5bc149b7d429710d7539e6de3b655a11.exe

description	pid	process
Token: SeDebugPrivilege	564	5bc149b7d429710d7539e6de3b655a11.exe
Token: SeDebugPrivilege	960	zula.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

5bc149b7d429710d7539e6de3b655a11.execmd.execmd.exe

description	pid	process	target process
PID 564 wrote to memory of 2016	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 2016	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 2016	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 2016	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 1940	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 1940	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 1940	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 564 wrote to memory of 1940	564	5bc149b7d429710d7539e6de3b655a11.exe	cmd.exe
PID 1940 wrote to memory of 1448	1940	cmd.exe	timeout.exe
PID 1940 wrote to memory of 1448	1940	cmd.exe	timeout.exe
PID 1940 wrote to memory of 1448	1940	cmd.exe	timeout.exe
PID 1940 wrote to memory of 1448	1940	cmd.exe	timeout.exe
PID 2016 wrote to memory of 1224	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 1224	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 1224	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 1224	2016	cmd.exe	schtasks.exe
PID 1940 wrote to memory of 960	1940	cmd.exe	zula.exe
PID 1940 wrote to memory of 960	1940	cmd.exe	zula.exe
PID 1940 wrote to memory of 960	1940	cmd.exe	zula.exe
PID 1940 wrote to memory of 960	1940	cmd.exe	zula.exe

C:\Users\Admin\AppData\Local\Temp\5bc149b7d429710d7539e6de3b655a11.exe
"C:\Users\Admin\AppData\Local\Temp\5bc149b7d429710d7539e6de3b655a11.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:564

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "zula" /tr '"C:\Users\Admin\AppData\Roaming\zula.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "zula" /tr '"C:\Users\Admin\AppData\Roaming\zula.exe"'
3⤵
- Creates scheduled task(s)
PID:1224

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp2425.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1940

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1448

C:\Users\Admin\AppData\Roaming\zula.exe
"C:\Users\Admin\AppData\Roaming\zula.exe"
3⤵
- Executes dropped EXE
- Suspicious use of AdjustPrivilegeToken
PID:960

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\tmp2425.tmp.bat
Filesize
148B

MD5
9f68f49c5c3cd330f60aa284f68c25bc

SHA1
d92cee61072f6884225c3dbc86d71b7109664d2c

SHA256
69d0c4e52bf956f496e7fb130c756627dd2b35609c98a5842e2bc0e3ac797fbd

SHA512
11dd6e6ed4827e3ae000ae49a399f42feb32783f39c94eb0d56ebe4260a33cbf59e591c732c7d20a419128f8a87f320b020040c111fa5eb2d5271b1a186a7471

Download Submit
C:\Users\Admin\AppData\Roaming\zula.exe
Filesize
208KB

MD5
5bc149b7d429710d7539e6de3b655a11

SHA1
7e32474bb18bad87408c0e8379acf563224dd5f4

SHA256
367286675076c14b4d7adedc674cd1902200003f703975bbfae71f5dfcdc18a6

SHA512
3a08d5571f4b0ce71a5d92a459b465c04d91a55abbf0ca5ebfc1d888ba10c1f50f0f5ec5ad8e1619d8403af154fd2af3536c26a7ca5d2a61fbee1028421f6648

Download Submit
C:\Users\Admin\AppData\Roaming\zula.exe
Filesize
208KB

MD5
5bc149b7d429710d7539e6de3b655a11

SHA1
7e32474bb18bad87408c0e8379acf563224dd5f4

SHA256
367286675076c14b4d7adedc674cd1902200003f703975bbfae71f5dfcdc18a6

SHA512
3a08d5571f4b0ce71a5d92a459b465c04d91a55abbf0ca5ebfc1d888ba10c1f50f0f5ec5ad8e1619d8403af154fd2af3536c26a7ca5d2a61fbee1028421f6648

Download Submit
\Users\Admin\AppData\Roaming\zula.exe
Filesize
208KB

MD5
5bc149b7d429710d7539e6de3b655a11

SHA1
7e32474bb18bad87408c0e8379acf563224dd5f4

SHA256
367286675076c14b4d7adedc674cd1902200003f703975bbfae71f5dfcdc18a6

SHA512
3a08d5571f4b0ce71a5d92a459b465c04d91a55abbf0ca5ebfc1d888ba10c1f50f0f5ec5ad8e1619d8403af154fd2af3536c26a7ca5d2a61fbee1028421f6648

Download Submit
memory/564-54-0x0000000000D30000-0x0000000000D6A000-memory.dmp

Filesize
232KB

Download
memory/564-55-0x0000000074AD1000-0x0000000074AD3000-memory.dmp

Filesize
8KB

Download
memory/960-63-0x0000000000000000-mapping.dmp

Download
memory/960-65-0x00000000000C0000-0x00000000000FA000-memory.dmp

Filesize
232KB

Download
memory/1224-60-0x0000000000000000-mapping.dmp

Download
memory/1448-59-0x0000000000000000-mapping.dmp

Download
memory/1940-57-0x0000000000000000-mapping.dmp

Download
memory/2016-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads