asyncrat | 99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb

General

Target

99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe
Size

623KB
MD5

7c96849ae4903afd6f8d853458cb1f59
SHA1

961806408c4be9d2d826b0665cba46e86dfc5c6a
SHA256

99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb
SHA512

18f33913b76737b302f9ce0d9c6925ab9a0c0c2ab5ef9f6c5b9fa220bbec7e78036c2ba4ccff62c7420e4ef9ba5228f30c163256a2849f16d0690ad5820a02dd
SSDEEP

12288:0JM7K/6xFVdY/r29tDIVmz/Oee0F0q5jGLH6+usB:uXCxFVdY68VE/OX0RFCHa8

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:59588

127.0.0.1:8808

mr7bashbab.ddns.net:6606

mr7bashbab.ddns.net:7707

mr7bashbab.ddns.net:59588

mr7bashbab.ddns.net:8808

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
System.exe
install_folder
%AppData%

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/1952-55-0x00000000004F0000-0x000000000051A000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

System.exe

pid process

1340 System.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2000 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

1632 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

556 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe

pid process

1952 99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe
Suspicious use of AdjustPrivilegeToken 1 IoCs

Processes:

99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe

description pid process

Token: SeDebugPrivilege 1952 99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe

pid	process
1340	System.exe

pid	process
2000	cmd.exe

pid	process
1632	schtasks.exe

pid	process
556	timeout.exe

pid	process
1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe

description	pid	process
Token: SeDebugPrivilege	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.execmd.execmd.exe

description	pid	process	target process
PID 1952 wrote to memory of 816	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 816	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 816	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 816	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 2000	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 2000	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 2000	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 1952 wrote to memory of 2000	1952	99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe	cmd.exe
PID 816 wrote to memory of 1632	816	cmd.exe	schtasks.exe
PID 816 wrote to memory of 1632	816	cmd.exe	schtasks.exe
PID 816 wrote to memory of 1632	816	cmd.exe	schtasks.exe
PID 816 wrote to memory of 1632	816	cmd.exe	schtasks.exe
PID 2000 wrote to memory of 556	2000	cmd.exe	timeout.exe
PID 2000 wrote to memory of 556	2000	cmd.exe	timeout.exe
PID 2000 wrote to memory of 556	2000	cmd.exe	timeout.exe
PID 2000 wrote to memory of 556	2000	cmd.exe	timeout.exe
PID 2000 wrote to memory of 1340	2000	cmd.exe	System.exe
PID 2000 wrote to memory of 1340	2000	cmd.exe	System.exe
PID 2000 wrote to memory of 1340	2000	cmd.exe	System.exe
PID 2000 wrote to memory of 1340	2000	cmd.exe	System.exe

C:\Users\Admin\AppData\Local\Temp\99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe
"C:\Users\Admin\AppData\Local\Temp\99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1952

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:816

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "System" /tr '"C:\Users\Admin\AppData\Roaming\System.exe"'
3⤵
- Creates scheduled task(s)
PID:1632

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp56A9.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2000

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:556

C:\Users\Admin\AppData\Roaming\System.exe
"C:\Users\Admin\AppData\Roaming\System.exe"
3⤵
- Executes dropped EXE
PID:1340

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\tmp56A9.tmp.bat
Filesize
150B

MD5
477efdb13e2aae10253a3630002f294b

SHA1
92fd9125bd5a33ce554236fefa2fec576d661fe8

SHA256
7ba3d38b195e341bba8605c0c2ed0e8dab57587388ca458f7b7dbd37db5f88d4

SHA512
80c2b18537c5a510a87ada74fa3ff18bc33f1e63eda87afe972f17d938c07298e24831f4cc13398182fdfcfaa6296f5507ab1a5c71b45b7ccee3a40d30643273

Download Submit
C:\Users\Admin\AppData\Roaming\System.exe
Filesize
623KB

MD5
7c96849ae4903afd6f8d853458cb1f59

SHA1
961806408c4be9d2d826b0665cba46e86dfc5c6a

SHA256
99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb

SHA512
18f33913b76737b302f9ce0d9c6925ab9a0c0c2ab5ef9f6c5b9fa220bbec7e78036c2ba4ccff62c7420e4ef9ba5228f30c163256a2849f16d0690ad5820a02dd

Download Submit
C:\Users\Admin\AppData\Roaming\System.exe
Filesize
623KB

MD5
7c96849ae4903afd6f8d853458cb1f59

SHA1
961806408c4be9d2d826b0665cba46e86dfc5c6a

SHA256
99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb

SHA512
18f33913b76737b302f9ce0d9c6925ab9a0c0c2ab5ef9f6c5b9fa220bbec7e78036c2ba4ccff62c7420e4ef9ba5228f30c163256a2849f16d0690ad5820a02dd

Download Submit
\Users\Admin\AppData\Roaming\System.exe
Filesize
623KB

MD5
7c96849ae4903afd6f8d853458cb1f59

SHA1
961806408c4be9d2d826b0665cba46e86dfc5c6a

SHA256
99ef5cdcc8d4101b45c724b59f9cd8c3cad9ca4b224d25fc9701b795b9939ceb

SHA512
18f33913b76737b302f9ce0d9c6925ab9a0c0c2ab5ef9f6c5b9fa220bbec7e78036c2ba4ccff62c7420e4ef9ba5228f30c163256a2849f16d0690ad5820a02dd

Download Submit
memory/556-60-0x0000000000000000-mapping.dmp

Download
memory/816-56-0x0000000000000000-mapping.dmp

Download
memory/1340-63-0x0000000000000000-mapping.dmp

Download
memory/1340-65-0x00000000008E0000-0x00000000008F0000-memory.dmp

Filesize
64KB

Download
memory/1632-58-0x0000000000000000-mapping.dmp

Download
memory/1952-54-0x0000000000F10000-0x0000000000F20000-memory.dmp

Filesize
64KB

Download
memory/1952-55-0x00000000004F0000-0x000000000051A000-memory.dmp

Filesize
168KB

Download
memory/2000-57-0x0000000000000000-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