asyncrat | 1a626198cb756125b04335293477b64d6bf0b8c1a3c9dbee117afd247fa477d6

General

Target

ddosziller.exe
Size

47KB
MD5

fcd50c790fc613bb52c7cea78a90d7ba
SHA1

06197d1e57e63af0b898de2b8388c447e2c6cc71
SHA256

1a626198cb756125b04335293477b64d6bf0b8c1a3c9dbee117afd247fa477d6
SHA512

1e9c923d08fae0818ba190efa1f7199ded9a04687022832730107cc9f9383262da14555d06f366df2b73123182ad4c9033a7205efc75b9535e39b8e676aef86c
SSDEEP

768:6uGs1THwoPNWUtmT1MHmo2qzDAYrkFndGFPI3O0qP0bK65rJ3lwm141BDZcx:6uGs1THb01m2g6dGC3vtbK+3lw44bdcx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

ratlordvc.ddns.net:6606

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
tesst.exe
install_folder
%AppData%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0005000000010300-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2840	tesst.exe

Loads dropped DLL 1 IoCs

pid	Process
2764	cmd.exe

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tesst.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ddosziller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2996	timeout.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2692	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2644	ddosziller.exe
2644	ddosziller.exe
2644	ddosziller.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2644	ddosziller.exe
Token: SeDebugPrivilege	2840	tesst.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2644 wrote to memory of 1032	2644	ddosziller.exe	30
PID 2644 wrote to memory of 1032	2644	ddosziller.exe	30
PID 2644 wrote to memory of 1032	2644	ddosziller.exe	30
PID 2644 wrote to memory of 1032	2644	ddosziller.exe	30
PID 2644 wrote to memory of 2764	2644	ddosziller.exe	32
PID 2644 wrote to memory of 2764	2644	ddosziller.exe	32
PID 2644 wrote to memory of 2764	2644	ddosziller.exe	32
PID 2644 wrote to memory of 2764	2644	ddosziller.exe	32
PID 2764 wrote to memory of 2996	2764	cmd.exe	34
PID 2764 wrote to memory of 2996	2764	cmd.exe	34
PID 2764 wrote to memory of 2996	2764	cmd.exe	34
PID 2764 wrote to memory of 2996	2764	cmd.exe	34
PID 1032 wrote to memory of 2692	1032	cmd.exe	35
PID 1032 wrote to memory of 2692	1032	cmd.exe	35
PID 1032 wrote to memory of 2692	1032	cmd.exe	35
PID 1032 wrote to memory of 2692	1032	cmd.exe	35
PID 2764 wrote to memory of 2840	2764	cmd.exe	36
PID 2764 wrote to memory of 2840	2764	cmd.exe	36
PID 2764 wrote to memory of 2840	2764	cmd.exe	36
PID 2764 wrote to memory of 2840	2764	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\ddosziller.exe
"C:\Users\Admin\AppData\Local\Temp\ddosziller.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "tesst" /tr '"C:\Users\Admin\AppData\Roaming\tesst.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1032
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "tesst" /tr '"C:\Users\Admin\AppData\Roaming\tesst.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2692
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp12C6.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2996
- - C:\Users\Admin\AppData\Roaming\tesst.exe
    "C:\Users\Admin\AppData\Roaming\tesst.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2840

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp12C6.tmp.bat

Filesize
149B

MD5
329dbd2fa8cdbe4071dc1c3b57ef69ab

SHA1
800c341b844fe6b788888957859e71b67eeffeaa

SHA256
741124481687ab4e73ea92f8e69f24854a166c6d69781f9deffed1f3f4415d54

SHA512
d674700f8d51a6aef137a90c49f8165343db90517f2b1292bdae3d58ed7cf24b7392057188c91160775059c91f4f73ec95764e42146d80f1c66c80e56a4f0736

Download Submit
\Users\Admin\AppData\Roaming\tesst.exe

Filesize
47KB

MD5
fcd50c790fc613bb52c7cea78a90d7ba

SHA1
06197d1e57e63af0b898de2b8388c447e2c6cc71

SHA256
1a626198cb756125b04335293477b64d6bf0b8c1a3c9dbee117afd247fa477d6

SHA512
1e9c923d08fae0818ba190efa1f7199ded9a04687022832730107cc9f9383262da14555d06f366df2b73123182ad4c9033a7205efc75b9535e39b8e676aef86c

Download Submit
memory/2644-0-0x0000000074C5E000-0x0000000074C5F000-memory.dmp

Filesize
4KB

Download
memory/2644-1-0x0000000000B60000-0x0000000000B72000-memory.dmp

Filesize
72KB

Download
memory/2644-2-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2644-11-0x0000000074C50000-0x000000007533E000-memory.dmp

Filesize
6.9MB

Download
memory/2840-16-0x0000000000030000-0x0000000000042000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads