asyncrat | bc0c6f07b05e4c29bae36fedd9e58e1cd0148d777a68d50ec5104567d9e3ce43

General

Target

5cdfcd6d591946dec15cec637f7826e6.exe
Size

309KB
MD5

5cdfcd6d591946dec15cec637f7826e6
SHA1

7959aeda9d64e19b9eeed15003c49a0c62eadf45
SHA256

bc0c6f07b05e4c29bae36fedd9e58e1cd0148d777a68d50ec5104567d9e3ce43
SHA512

e8a3363aaaecc5902aa93b4754d24e03c86cabe4132f6aa0111c8b575fcfa5b0e1ff7127279f0808f83c01547e043efffe628207272d1d61aa8697c926ac194b

Score

10^/10

asyncrat 1 persistence rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

1

C2

212.193.30.54:8754

Mutex

gyQ12!.,=FDpsdf2_@

Attributes

anti_vm
false
bsod
false
delay
3
install
false
install_folder
%AppData%
pastebin_config
null

aes.plain

Signatures

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

Async RAT payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1216-70-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1216-69-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1216-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1216-72-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

5cdfcd6d591946dec15cec637f7826e6.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows\CurrentVersion\Run\gkn = "\"C:\\Users\\Admin\\AppData\\Roaming\\gkn.exe\""	5cdfcd6d591946dec15cec637f7826e6.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

5cdfcd6d591946dec15cec637f7826e6.exe

description pid process target process

PID 1592 set thread context of 1216 1592 5cdfcd6d591946dec15cec637f7826e6.exe RegAsm.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

1912 timeout.exe
Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

powershell.exe5cdfcd6d591946dec15cec637f7826e6.exe

pid process

584 powershell.exe
1592 5cdfcd6d591946dec15cec637f7826e6.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

powershell.exe5cdfcd6d591946dec15cec637f7826e6.exe

description pid process

Token: SeDebugPrivilege 584 powershell.exe
Token: SeDebugPrivilege 1592 5cdfcd6d591946dec15cec637f7826e6.exe

description	pid	process	target process
PID 1592 set thread context of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe

pid	process
1912	timeout.exe

pid	process
584	powershell.exe
1592	5cdfcd6d591946dec15cec637f7826e6.exe

description	pid	process
Token: SeDebugPrivilege	584	powershell.exe
Token: SeDebugPrivilege	1592	5cdfcd6d591946dec15cec637f7826e6.exe

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

5cdfcd6d591946dec15cec637f7826e6.exepowershell.execmd.exe

description	pid	process	target process
PID 1592 wrote to memory of 584	1592	5cdfcd6d591946dec15cec637f7826e6.exe	powershell.exe
PID 1592 wrote to memory of 584	1592	5cdfcd6d591946dec15cec637f7826e6.exe	powershell.exe
PID 1592 wrote to memory of 584	1592	5cdfcd6d591946dec15cec637f7826e6.exe	powershell.exe
PID 1592 wrote to memory of 584	1592	5cdfcd6d591946dec15cec637f7826e6.exe	powershell.exe
PID 584 wrote to memory of 628	584	powershell.exe	cmd.exe
PID 584 wrote to memory of 628	584	powershell.exe	cmd.exe
PID 584 wrote to memory of 628	584	powershell.exe	cmd.exe
PID 584 wrote to memory of 628	584	powershell.exe	cmd.exe
PID 628 wrote to memory of 1912	628	cmd.exe	timeout.exe
PID 628 wrote to memory of 1912	628	cmd.exe	timeout.exe
PID 628 wrote to memory of 1912	628	cmd.exe	timeout.exe
PID 628 wrote to memory of 1912	628	cmd.exe	timeout.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe
PID 1592 wrote to memory of 1216	1592	5cdfcd6d591946dec15cec637f7826e6.exe	RegAsm.exe

C:\Users\Admin\AppData\Local\Temp\5cdfcd6d591946dec15cec637f7826e6.exe
"C:\Users\Admin\AppData\Local\Temp\5cdfcd6d591946dec15cec637f7826e6.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc YwBtAGQAIAAvAGMAIAB0AGkAbQBlAG8AdQB0ACAAMgAzAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:584

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\system32\cmd.exe" /c timeout 23
3⤵
- Suspicious use of WriteProcessMemory
PID:628

C:\Windows\SysWOW64\timeout.exe
timeout 23
4⤵
- Delays execution with timeout.exe
PID:1912

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
2⤵
PID:1216

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

memory/584-60-0x00000000023B1000-0x00000000023B2000-memory.dmp

Filesize
4KB

Download
memory/584-61-0x00000000023B2000-0x00000000023B4000-memory.dmp

Filesize
8KB

Download
memory/584-59-0x0000000071D82000-0x0000000071D84000-memory.dmp

Filesize
8KB

Download
memory/584-57-0x0000000071D81000-0x0000000071D82000-memory.dmp

Filesize
4KB

Download
memory/584-58-0x00000000023B0000-0x00000000023B1000-memory.dmp

Filesize
4KB

Download
memory/1216-69-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1216-67-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1216-74-0x0000000004F50000-0x0000000004F51000-memory.dmp

Filesize
4KB

Download
memory/1216-73-0x00000000739EE000-0x00000000739EF000-memory.dmp

Filesize
4KB

Download
memory/1216-72-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1216-68-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1216-70-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1216-66-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/1592-63-0x0000000000810000-0x0000000000840000-memory.dmp

Filesize
192KB

Download
memory/1592-65-0x00000000053F0000-0x00000000053F1000-memory.dmp

Filesize
4KB

Download
memory/1592-53-0x0000000000F40000-0x0000000000F94000-memory.dmp

Filesize
336KB

Download
memory/1592-64-0x00000000048F0000-0x000000000493C000-memory.dmp

Filesize
304KB

Download
memory/1592-55-0x0000000074AFE000-0x0000000074AFF000-memory.dmp

Filesize
4KB

Download
memory/1592-62-0x0000000000EA0000-0x0000000000EE0000-memory.dmp

Filesize
256KB

Download
memory/1592-54-0x0000000075D51000-0x0000000075D53000-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