asyncrat | 6c13935ce459215baf7b863cf206747125cacca60793e81ca06ee66139eeba79

General

Target

f383aca77ec8694ab609f6c6ee464bde.exe
Size

455KB
MD5

f383aca77ec8694ab609f6c6ee464bde
SHA1

836abb931164edf8ea1ec1437b94eed0fc568049
SHA256

6c13935ce459215baf7b863cf206747125cacca60793e81ca06ee66139eeba79
SHA512

7acba871babb6cba09d1e444387d4d282f65b951b16127145521cd70915995425de6efc72a5f6400c81371734e5a47eaa33ed76ce06586f45fc8df1108af4040

Score

10^/10

asyncrat venom clients rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

5.0.5

Botnet

Venom Clients

C2

194.5.97.88:5050

Mutex

Venom_RAT_HVNC_Mutex_Venom RAT_HVNC

Attributes

delay
1
install
false
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 7 IoCs

rat

resource	yara_rule
behavioral1/memory/1016-63-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1016-64-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1016-65-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1016-66-0x000000000041099E-mapping.dmp	asyncrat
behavioral1/memory/1016-69-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1016-71-0x0000000000400000-0x0000000000416000-memory.dmp	asyncrat
behavioral1/memory/1016-78-0x0000000004660000-0x000000000466C000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1016	InstallUtil.exe
340	QWAS.exe

Loads dropped DLL 2 IoCs

pid	Process
1324	f383aca77ec8694ab609f6c6ee464bde.exe
1852	powershell.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1324 set thread context of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1324	f383aca77ec8694ab609f6c6ee464bde.exe
1324	f383aca77ec8694ab609f6c6ee464bde.exe
1852	powershell.exe
1016	InstallUtil.exe
1852	powershell.exe
1852	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1324	f383aca77ec8694ab609f6c6ee464bde.exe
Token: SeDebugPrivilege	1016	InstallUtil.exe
Token: SeDebugPrivilege	1852	powershell.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1324 wrote to memory of 1016	1324	f383aca77ec8694ab609f6c6ee464bde.exe	28
PID 1016 wrote to memory of 1824	1016	InstallUtil.exe	30
PID 1016 wrote to memory of 1824	1016	InstallUtil.exe	30
PID 1016 wrote to memory of 1824	1016	InstallUtil.exe	30
PID 1016 wrote to memory of 1824	1016	InstallUtil.exe	30
PID 1824 wrote to memory of 1852	1824	cmd.exe	32
PID 1824 wrote to memory of 1852	1824	cmd.exe	32
PID 1824 wrote to memory of 1852	1824	cmd.exe	32
PID 1824 wrote to memory of 1852	1824	cmd.exe	32
PID 1852 wrote to memory of 340	1852	powershell.exe	33
PID 1852 wrote to memory of 340	1852	powershell.exe	33
PID 1852 wrote to memory of 340	1852	powershell.exe	33
PID 1852 wrote to memory of 340	1852	powershell.exe	33

C:\Users\Admin\AppData\Local\Temp\f383aca77ec8694ab609f6c6ee464bde.exe
"C:\Users\Admin\AppData\Local\Temp\f383aca77ec8694ab609f6c6ee464bde.exe"
1⤵
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1324
- C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe
  "C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1016
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\QWAS.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1824
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\QWAS.exe"'
      4⤵
      Loads dropped DLL
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:1852
    - - C:\Users\Admin\AppData\Local\Temp\QWAS.exe
        
        "C:\Users\Admin\AppData\Local\Temp\QWAS.exe"
        5⤵
        Executes dropped EXE
        
        PID:340

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
C:\Users\Admin\AppData\Local\Temp\QWAS.exe

Filesize
682KB

MD5
0c333ed8bb368bd1f442e429d25468bf

SHA1
17caab2afdb4338cea5161abe9b4f1137585afcd

SHA256
ad0b97333d1e6ea935fdc6a610f9eeea8fe2f1fcbadcf2c721aa7d1e4149618d

SHA512
a5f2e72c3852cca0b19e89e03cf97db21d030ede8743ad102bf4c3f9bde21a8156f24847766a54163064becdceaef2f482c53f940a58c2a5dc2205ab40a3104b

Download Submit
C:\Users\Admin\AppData\Local\Temp\QWAS.exe

Filesize
682KB

MD5
0c333ed8bb368bd1f442e429d25468bf

SHA1
17caab2afdb4338cea5161abe9b4f1137585afcd

SHA256
ad0b97333d1e6ea935fdc6a610f9eeea8fe2f1fcbadcf2c721aa7d1e4149618d

SHA512
a5f2e72c3852cca0b19e89e03cf97db21d030ede8743ad102bf4c3f9bde21a8156f24847766a54163064becdceaef2f482c53f940a58c2a5dc2205ab40a3104b

Download Submit
\Users\Admin\AppData\Local\Temp\InstallUtil.exe

Filesize
40KB

MD5
91c9ae9c9a17a9db5e08b120e668c74c

SHA1
50770954c1ceb0bb6f1d5d3f2de2a0a065773723

SHA256
e56a7e5d3ab9675555e2897fc3faa2dd9265008a4967a7d54030ab8184d2d38f

SHA512
ca504af192e3318359d4742a2ef26ae1b5d040a4f9942782e02549a310158d5d5dbf919b4c748c31ee609d2046bd23ee0c22712891c86ae4a1e3a58c6e67647e

Download Submit
\Users\Admin\AppData\Local\Temp\QWAS.exe

Filesize
682KB

MD5
0c333ed8bb368bd1f442e429d25468bf

SHA1
17caab2afdb4338cea5161abe9b4f1137585afcd

SHA256
ad0b97333d1e6ea935fdc6a610f9eeea8fe2f1fcbadcf2c721aa7d1e4149618d

SHA512
a5f2e72c3852cca0b19e89e03cf97db21d030ede8743ad102bf4c3f9bde21a8156f24847766a54163064becdceaef2f482c53f940a58c2a5dc2205ab40a3104b

Download Submit
memory/340-86-0x0000000000ED0000-0x0000000000F80000-memory.dmp

Filesize
704KB

Download
memory/1016-71-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-60-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-65-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-63-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-69-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-64-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-61-0x0000000000400000-0x0000000000416000-memory.dmp

Filesize
88KB

Download
memory/1016-74-0x0000000005430000-0x000000000549A000-memory.dmp

Filesize
424KB

Download
memory/1016-75-0x0000000000960000-0x000000000096A000-memory.dmp

Filesize
40KB

Download
memory/1016-76-0x0000000005B60000-0x0000000005BF0000-memory.dmp

Filesize
576KB

Download
memory/1016-77-0x0000000005510000-0x0000000005570000-memory.dmp

Filesize
384KB

Download
memory/1016-78-0x0000000004660000-0x000000000466C000-memory.dmp

Filesize
48KB

Download
memory/1324-54-0x00000000012E0000-0x0000000001356000-memory.dmp

Filesize
472KB

Download
memory/1324-58-0x0000000000AF0000-0x0000000000AF6000-memory.dmp

Filesize
24KB

Download
memory/1324-57-0x0000000000AC0000-0x0000000000ADA000-memory.dmp

Filesize
104KB

Download
memory/1324-56-0x0000000076011000-0x0000000076013000-memory.dmp

Filesize
8KB

Download
memory/1324-55-0x0000000000A10000-0x0000000000A40000-memory.dmp

Filesize
192KB

Download
memory/1852-87-0x000000006E6D0000-0x000000006EC7B000-memory.dmp

Filesize
5.7MB

Download

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