asyncrat | aafd84bfc4bfd841eee42e253df9df9868a4fc7a90474a9200940d9b6cbc35fa

General

Target

tmp.exe
Size

5.3MB
MD5

6967092864e12d1bec4bdda56399ae44
SHA1

78458ea4a39f59869a131c1eff19f383bb8955f4
SHA256

aafd84bfc4bfd841eee42e253df9df9868a4fc7a90474a9200940d9b6cbc35fa
SHA512

34270c2c716e8ee6907ec48d92aea0fa5a88cd79343b3b3fe7eb4b00068445bb7f9d640f4aed166ade9bb63cc562467c53af5f188081953a5772463a7ce258fb
SSDEEP

98304:pgG+mM6eVLwvCuTjZMyOgEdMD/cKr8njPFUxILCnrpP:h+AeVLwv5ayOZdA0K4nxUx+Y

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

months-documents.at.ply.gg:10134

months-documents.at.ply.gg:39185

Mutex

杰Θio开ي9fd6比kVΒيmGΙ6Kz0h

Attributes

delay
1
install
true
install_file
RuntimeBroker.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 11 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1752-55-0x0000000000F20000-0x00000000027E0000-memory.dmp	asyncrat
behavioral1/memory/1752-57-0x0000000000F20000-0x00000000027E0000-memory.dmp	asyncrat
behavioral1/memory/1752-63-0x0000000000F20000-0x00000000027E0000-memory.dmp	asyncrat
\Users\Admin\AppData\Roaming\RuntimeBroker.exe	asyncrat
C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe	asyncrat
C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe	asyncrat
behavioral1/memory/1316-70-0x0000000000F70000-0x0000000002830000-memory.dmp	asyncrat
behavioral1/memory/1316-71-0x0000000000F70000-0x0000000002830000-memory.dmp	asyncrat
behavioral1/memory/1316-72-0x0000000000F70000-0x0000000002830000-memory.dmp	asyncrat
behavioral1/memory/1316-73-0x0000000000F70000-0x0000000002830000-memory.dmp	asyncrat
behavioral1/memory/1316-74-0x00000000047E0000-0x0000000004814000-memory.dmp	asyncrat

Executes dropped EXE 1 IoCs

Processes:

RuntimeBroker.exe

pid process

1316 RuntimeBroker.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

976 cmd.exe

pid	process
1316	RuntimeBroker.exe

pid	process
976	cmd.exe

Suspicious use of NtSetInformationThreadHideFromDebugger 12 IoCs

Processes:

tmp.exeRuntimeBroker.exe

pid	process
1752	tmp.exe
1752	tmp.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.exe
1316	RuntimeBroker.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

1360 schtasks.exe
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1324 timeout.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

tmp.exe

pid process

1752 tmp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

tmp.exeRuntimeBroker.exe

description pid process

Token: SeDebugPrivilege 1752 tmp.exe
Token: SeDebugPrivilege 1316 RuntimeBroker.exe
Suspicious use of SetWindowsHookEx 2 IoCs

Processes:

tmp.exeRuntimeBroker.exe

pid process

1752 tmp.exe
1316 RuntimeBroker.exe

pid	process
1360	schtasks.exe

pid	process
1324	timeout.exe

description	pid	process
Token: SeDebugPrivilege	1752	tmp.exe
Token: SeDebugPrivilege	1316	RuntimeBroker.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

tmp.execmd.execmd.exe

description	pid	process	target process
PID 1752 wrote to memory of 1744	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 1744	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 1744	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 1744	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 976	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 976	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 976	1752	tmp.exe	cmd.exe
PID 1752 wrote to memory of 976	1752	tmp.exe	cmd.exe
PID 1744 wrote to memory of 1360	1744	cmd.exe	schtasks.exe
PID 1744 wrote to memory of 1360	1744	cmd.exe	schtasks.exe
PID 1744 wrote to memory of 1360	1744	cmd.exe	schtasks.exe
PID 1744 wrote to memory of 1360	1744	cmd.exe	schtasks.exe
PID 976 wrote to memory of 1324	976	cmd.exe	timeout.exe
PID 976 wrote to memory of 1324	976	cmd.exe	timeout.exe
PID 976 wrote to memory of 1324	976	cmd.exe	timeout.exe
PID 976 wrote to memory of 1324	976	cmd.exe	timeout.exe
PID 976 wrote to memory of 1316	976	cmd.exe	RuntimeBroker.exe
PID 976 wrote to memory of 1316	976	cmd.exe	RuntimeBroker.exe
PID 976 wrote to memory of 1316	976	cmd.exe	RuntimeBroker.exe
PID 976 wrote to memory of 1316	976	cmd.exe	RuntimeBroker.exe

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
1⤵
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1752

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"' & exit
2⤵
- Suspicious use of WriteProcessMemory
PID:1744

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "RuntimeBroker" /tr '"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"'
3⤵
- Creates scheduled task(s)
PID:1360

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3747.tmp.bat""
2⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:976

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- Delays execution with timeout.exe
PID:1324

C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
"C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe"
3⤵
- Executes dropped EXE
- Suspicious use of NtSetInformationThreadHideFromDebugger
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:1316

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\tmp3747.tmp.bat
Filesize
157B

MD5
6b7e21b1c9357187ad3be86c53cd4c28

SHA1
c0aa4a5f39640b8cef66c36071419a9054f17a04

SHA256
62a55c26cc7ad6c26634b73767955ec49449f61cc9a76f7d86f9eead2aa121b5

SHA512
3c09cbe9ff4ff84a25666ddb58299d46f2b5cae3c7a0800118eda6c886903c78e51cf57d612148ec6e6f2c39f4c8aebac3d6a2b99577c2a46223dc89866481d6

Download Submit
C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
Filesize
5.3MB

MD5
6967092864e12d1bec4bdda56399ae44

SHA1
78458ea4a39f59869a131c1eff19f383bb8955f4

SHA256
aafd84bfc4bfd841eee42e253df9df9868a4fc7a90474a9200940d9b6cbc35fa

SHA512
34270c2c716e8ee6907ec48d92aea0fa5a88cd79343b3b3fe7eb4b00068445bb7f9d640f4aed166ade9bb63cc562467c53af5f188081953a5772463a7ce258fb

Download Submit
C:\Users\Admin\AppData\Roaming\RuntimeBroker.exe
Filesize
5.3MB

MD5
6967092864e12d1bec4bdda56399ae44

SHA1
78458ea4a39f59869a131c1eff19f383bb8955f4

SHA256
aafd84bfc4bfd841eee42e253df9df9868a4fc7a90474a9200940d9b6cbc35fa

SHA512
34270c2c716e8ee6907ec48d92aea0fa5a88cd79343b3b3fe7eb4b00068445bb7f9d640f4aed166ade9bb63cc562467c53af5f188081953a5772463a7ce258fb

Download Submit
\Users\Admin\AppData\Roaming\RuntimeBroker.exe
Filesize
5.3MB

MD5
6967092864e12d1bec4bdda56399ae44

SHA1
78458ea4a39f59869a131c1eff19f383bb8955f4

SHA256
aafd84bfc4bfd841eee42e253df9df9868a4fc7a90474a9200940d9b6cbc35fa

SHA512
34270c2c716e8ee6907ec48d92aea0fa5a88cd79343b3b3fe7eb4b00068445bb7f9d640f4aed166ade9bb63cc562467c53af5f188081953a5772463a7ce258fb

Download Submit
memory/976-59-0x0000000000000000-mapping.dmp

Download
memory/1316-66-0x0000000000000000-mapping.dmp

Download
memory/1316-74-0x00000000047E0000-0x0000000004814000-memory.dmp

Filesize
208KB

Download
memory/1316-73-0x0000000000F70000-0x0000000002830000-memory.dmp

Filesize
24.8MB

Download
memory/1316-72-0x0000000000F70000-0x0000000002830000-memory.dmp

Filesize
24.8MB

Download
memory/1316-71-0x0000000000F70000-0x0000000002830000-memory.dmp

Filesize
24.8MB

Download
memory/1316-70-0x0000000000F70000-0x0000000002830000-memory.dmp

Filesize
24.8MB

Download
memory/1316-69-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

Filesize
3.8MB

Download
memory/1324-62-0x0000000000000000-mapping.dmp

Download
memory/1360-60-0x0000000000000000-mapping.dmp

Download
memory/1744-58-0x0000000000000000-mapping.dmp

Download
memory/1752-55-0x0000000000F20000-0x00000000027E0000-memory.dmp

Filesize
24.8MB

Download
memory/1752-57-0x0000000000F20000-0x00000000027E0000-memory.dmp

Filesize
24.8MB

Download
memory/1752-56-0x000000007EBD0000-0x000000007EFA1000-memory.dmp

Filesize
3.8MB

Download
memory/1752-63-0x0000000000F20000-0x00000000027E0000-memory.dmp

Filesize
24.8MB

Download
memory/1752-54-0x0000000075111000-0x0000000075113000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads