asyncrat | 93df1c272022c2a5bc8bcb8247ffc932837ea4de9f6044da8953a3a1078ab018

General

Target

273f2c55c1982fc3ec6450639609f38a.exe
Size

486KB
MD5

273f2c55c1982fc3ec6450639609f38a
SHA1

02db2875babca34c81f4979134cba8422c7ef262
SHA256

93df1c272022c2a5bc8bcb8247ffc932837ea4de9f6044da8953a3a1078ab018
SHA512

a65de5f5bf0f47c399108f6b59405327be7a1037a2b6597a5eef4b13c3483347885a86a6662770bd34a8aea61445ac29cab93e330739453922dcbacf7b743e38

Score

10^/10

asyncrat default rat suricata

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

vivald21.hopto.org:9954

63.141.237.188:9954

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata: ET MALWARE Generic AsyncRAT Style SSL Cert
suricata
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 6 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1412-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1412-70-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1412-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1412-71-0x000000000040D09E-mapping.dmp	asyncrat
behavioral1/memory/1412-75-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1412-73-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Suspicious use of SetThreadContext 1 IoCs

Processes:

273f2c55c1982fc3ec6450639609f38a.exe

description pid process target process

PID 1756 set thread context of 1412 1756 273f2c55c1982fc3ec6450639609f38a.exe 273f2c55c1982fc3ec6450639609f38a.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

1764 schtasks.exe

description	pid	process	target process
PID 1756 set thread context of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe

pid	process
1764	schtasks.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

273f2c55c1982fc3ec6450639609f38a.exepowershell.exe

pid	process
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1756	273f2c55c1982fc3ec6450639609f38a.exe
1996	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

273f2c55c1982fc3ec6450639609f38a.exepowershell.exe273f2c55c1982fc3ec6450639609f38a.exe

description	pid	process
Token: SeDebugPrivilege	1756	273f2c55c1982fc3ec6450639609f38a.exe
Token: SeDebugPrivilege	1996	powershell.exe
Token: SeDebugPrivilege	1412	273f2c55c1982fc3ec6450639609f38a.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

273f2c55c1982fc3ec6450639609f38a.exe

C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe
"C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1756

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\mqJGmcQXQtGbX.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1996

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\mqJGmcQXQtGbX" /XML "C:\Users\Admin\AppData\Local\Temp\tmpFEBA.tmp"
2⤵
- Creates scheduled task(s)
PID:1764

C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe
"C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe"
2⤵
PID:524

C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe
"C:\Users\Admin\AppData\Local\Temp\273f2c55c1982fc3ec6450639609f38a.exe"
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:1412

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\tmpFEBA.tmp
Filesize
1KB

MD5
41290d202948073ec101a8feab825055

SHA1
2b48fd23f19f9dab1fdababcba0342ac38b9f188

SHA256
dbe47d83f759900a3030b8103cd02a5bf1f944ebf6521d82985cdd29fa4f68cf

SHA512
44e61fe675d98e966a1edc161b193175e5c8b9fb927ec45bcb2c67f148f2b482d1fe77c492821cb3f7efb51c7f631dd3ad85cf5e3371a5d440e405e08bbc3869

Download Submit
memory/1412-70-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-65-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-73-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-75-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1412-71-0x000000000040D09E-mapping.dmp

Download
memory/1756-57-0x00000000003D0000-0x00000000003E6000-memory.dmp

Filesize
88KB

Download
memory/1756-56-0x0000000000370000-0x0000000000386000-memory.dmp

Filesize
88KB

Download
memory/1756-58-0x00000000005A0000-0x00000000005AA000-memory.dmp

Filesize
40KB

Download
memory/1756-54-0x0000000000180000-0x0000000000200000-memory.dmp

Filesize
512KB

Download
memory/1756-55-0x0000000075E51000-0x0000000075E53000-memory.dmp

Filesize
8KB

Download
memory/1756-59-0x0000000004450000-0x00000000044AC000-memory.dmp

Filesize
368KB

Download
memory/1756-64-0x0000000002280000-0x0000000002292000-memory.dmp

Filesize
72KB

Download
memory/1764-61-0x0000000000000000-mapping.dmp

Download
memory/1996-76-0x000000006E770000-0x000000006ED1B000-memory.dmp

Filesize
5.7MB

Download
memory/1996-60-0x0000000000000000-mapping.dmp

Download

description	pid	process	target process
PID 1756 wrote to memory of 1996	1756	273f2c55c1982fc3ec6450639609f38a.exe	powershell.exe
PID 1756 wrote to memory of 1996	1756	273f2c55c1982fc3ec6450639609f38a.exe	powershell.exe
PID 1756 wrote to memory of 1996	1756	273f2c55c1982fc3ec6450639609f38a.exe	powershell.exe
PID 1756 wrote to memory of 1996	1756	273f2c55c1982fc3ec6450639609f38a.exe	powershell.exe
PID 1756 wrote to memory of 1764	1756	273f2c55c1982fc3ec6450639609f38a.exe	schtasks.exe
PID 1756 wrote to memory of 1764	1756	273f2c55c1982fc3ec6450639609f38a.exe	schtasks.exe
PID 1756 wrote to memory of 1764	1756	273f2c55c1982fc3ec6450639609f38a.exe	schtasks.exe
PID 1756 wrote to memory of 1764	1756	273f2c55c1982fc3ec6450639609f38a.exe	schtasks.exe
PID 1756 wrote to memory of 524	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 524	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 524	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 524	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe
PID 1756 wrote to memory of 1412	1756	273f2c55c1982fc3ec6450639609f38a.exe	273f2c55c1982fc3ec6450639609f38a.exe

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads