asyncrat | 3d2d4ea5e9f269ef05bdb96e6822f310278b96597eaef98aa65e1df140a4815e

General

Target

WaveInstaller.exe
Size

48KB
MD5

ffdbfa925cfd5b6a8de01878050d5c02
SHA1

3f44bd4133b98f94b3085050b951bcba3b7ff837
SHA256

3d2d4ea5e9f269ef05bdb96e6822f310278b96597eaef98aa65e1df140a4815e
SHA512

3ea2bdb9c835248b07c67a95ff1a466d63077d47edb9982c046f9f4f36bd1301ac5c3a3b472e96e6c01a17804bcd9a89886bf78d8a617961b60469b8485e900a
SSDEEP

768:qH1fhILbkJt+RiDaB2PiMZ8YbOgRoC5l5OvEgK/JAZVc6KN:qH1Nvxnzbxl4nkJAZVclN

Score

10^/10

asyncrat default execution rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

127.0.0.1:8848

https://ooo.fluffiflower.xyz/:8848

ooo.fluffiflower.xyz:8848

2.132.191.110:8848

0.0.0.0:8848

Mutex

DcRatMutex_qwqdanchun

Attributes

delay
1
install
false
install_file
Explorer.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Deletes itself 1 IoCs

pid	Process
1496	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2340	WaveInstaller(3).exe

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Start PowerShell.

execution

PowerShell

T1059.001

pid	Process
1772	powershell.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2548	timeout.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1772	powershell.exe
1772	powershell.exe
1772	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2092	WaveInstaller.exe
Token: SeDebugPrivilege	1772	powershell.exe
Token: SeDebugPrivilege	2340	WaveInstaller(3).exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 2092 wrote to memory of 1012	2092	WaveInstaller.exe	31
PID 2092 wrote to memory of 1012	2092	WaveInstaller.exe	31
PID 2092 wrote to memory of 1012	2092	WaveInstaller.exe	31
PID 2092 wrote to memory of 1496	2092	WaveInstaller.exe	33
PID 2092 wrote to memory of 1496	2092	WaveInstaller.exe	33
PID 2092 wrote to memory of 1496	2092	WaveInstaller.exe	33
PID 1012 wrote to memory of 1772	1012	cmd.exe	35
PID 1012 wrote to memory of 1772	1012	cmd.exe	35
PID 1012 wrote to memory of 1772	1012	cmd.exe	35
PID 1496 wrote to memory of 2548	1496	cmd.exe	36
PID 1496 wrote to memory of 2548	1496	cmd.exe	36
PID 1496 wrote to memory of 2548	1496	cmd.exe	36
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37
PID 1772 wrote to memory of 2340	1772	powershell.exe	37

C:\Users\Admin\AppData\Local\Temp\WaveInstaller.exe
"C:\Users\Admin\AppData\Local\Temp\WaveInstaller.exe"
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2092
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c start /b powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\WaveInstaller(3).exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1012
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell –ExecutionPolicy Bypass Start-Process -FilePath '"C:\Users\Admin\AppData\Local\Temp\WaveInstaller(3).exe"'
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:1772
  - - C:\Users\Admin\AppData\Local\Temp\WaveInstaller(3).exe
      "C:\Users\Admin\AppData\Local\Temp\WaveInstaller(3).exe"
      4⤵
      Executes dropped EXE
      Suspicious use of AdjustPrivilegeToken
      PID:2340
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF90B.tmp.bat""
  2⤵
  - Deletes itself
  - Suspicious use of WriteProcessMemory
  PID:1496
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2548

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1476

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab29FF.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar61F3.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\WaveInstaller(3).exe

Filesize
2.3MB

MD5
8ad8b6593c91d7960dad476d6d4af34f

SHA1
0a95f110c8264cde7768a3fd76db5687fda830ea

SHA256
43e6ae7e38488e95741b1cad60843e7ce49419889285433eb4e697c175a153ab

SHA512
09b522da0958f8b173e97b31b6c7141cb67de5d30db9ff71bc6e61ca9a97c09bff6b17d6eaa03c840500996aad25b3419391af64de1c59e98ff6a8eac636b686

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpF90B.tmp.bat

Filesize
165B

MD5
6e625fca89a62363ab0347d345ab39b6

SHA1
67f5bf5824795e622534242549786dfdf253e978

SHA256
5a436f78a78b92f56f91f8d1e0e8a7b843fc10edccb18064d7a89deaff3e489c

SHA512
8eef0d4b0811092b610522769d5894fcc740ed1fe9ad383cc0b6fae6bf01e285e9a85b35d7bd4251f4cbd1d4c31b9a08d3fbd368dbc23dc0de149ed72a72c2bf

Download Submit
memory/1772-74-0x000000001B7A0000-0x000000001BA82000-memory.dmp

Filesize
2.9MB

Download
memory/1772-75-0x0000000001E60000-0x0000000001E68000-memory.dmp

Filesize
32KB

Download
memory/2092-19-0x000007FEF59D3000-0x000007FEF59D4000-memory.dmp

Filesize
4KB

Download
memory/2092-20-0x000007FEF59D0000-0x000007FEF63BC000-memory.dmp

Filesize
9.9MB

Download
memory/2092-21-0x0000000000580000-0x0000000000590000-memory.dmp

Filesize
64KB

Download
memory/2092-2-0x000007FEF59D0000-0x000007FEF63BC000-memory.dmp

Filesize
9.9MB

Download
memory/2092-41-0x00000000005B0000-0x00000000005BC000-memory.dmp

Filesize
48KB

Download
memory/2092-0-0x000007FEF59D3000-0x000007FEF59D4000-memory.dmp

Filesize
4KB

Download
memory/2092-68-0x000007FEF59D0000-0x000007FEF63BC000-memory.dmp

Filesize
9.9MB

Download
memory/2092-1-0x0000000000260000-0x0000000000272000-memory.dmp

Filesize
72KB

Download
memory/2340-78-0x0000000000230000-0x000000000047A000-memory.dmp

Filesize
2.3MB

Download
memory/2340-79-0x0000000000880000-0x0000000000932000-memory.dmp

Filesize
712KB

Download
memory/2340-80-0x0000000000730000-0x00000000007B2000-memory.dmp

Filesize
520KB

Download
memory/2340-81-0x0000000000480000-0x0000000000488000-memory.dmp

Filesize
32KB

Download
memory/2340-82-0x0000000000490000-0x0000000000498000-memory.dmp

Filesize
32KB

Download
memory/2340-84-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/2340-83-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download
memory/2340-85-0x0000000002580000-0x000000000258A000-memory.dmp

Filesize
40KB

Download
memory/2340-86-0x00000000079C0000-0x0000000007A36000-memory.dmp

Filesize
472KB

Download
memory/2340-87-0x0000000002630000-0x000000000263A000-memory.dmp

Filesize
40KB

Download
memory/2340-88-0x00000000047A0000-0x00000000047D2000-memory.dmp

Filesize
200KB

Download
memory/2340-89-0x0000000004840000-0x0000000004866000-memory.dmp

Filesize
152KB

Download
memory/2340-90-0x0000000004870000-0x0000000004878000-memory.dmp

Filesize
32KB

Download
memory/2340-92-0x0000000004C70000-0x0000000004C86000-memory.dmp

Filesize
88KB

Download
memory/2340-93-0x0000000004E10000-0x0000000004E1A000-memory.dmp

Filesize
40KB

Download
memory/2340-94-0x0000000000560000-0x000000000056A000-memory.dmp

Filesize
40KB

Download

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