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
behavioral2/files/0x000200000001e733-11.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	ddosziller.exe

Executes dropped EXE 1 IoCs

pid	Process
3124	tesst.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	ddosziller.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tesst.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4856	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
4008	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe
3148	ddosziller.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3148	ddosziller.exe
Token: SeDebugPrivilege	3124	tesst.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 3148 wrote to memory of 1416	3148	ddosziller.exe	84
PID 3148 wrote to memory of 1416	3148	ddosziller.exe	84
PID 3148 wrote to memory of 1416	3148	ddosziller.exe	84
PID 3148 wrote to memory of 4648	3148	ddosziller.exe	86
PID 3148 wrote to memory of 4648	3148	ddosziller.exe	86
PID 3148 wrote to memory of 4648	3148	ddosziller.exe	86
PID 1416 wrote to memory of 4008	1416	cmd.exe	88
PID 1416 wrote to memory of 4008	1416	cmd.exe	88
PID 1416 wrote to memory of 4008	1416	cmd.exe	88
PID 4648 wrote to memory of 4856	4648	cmd.exe	89
PID 4648 wrote to memory of 4856	4648	cmd.exe	89
PID 4648 wrote to memory of 4856	4648	cmd.exe	89
PID 4648 wrote to memory of 3124	4648	cmd.exe	90
PID 4648 wrote to memory of 3124	4648	cmd.exe	90
PID 4648 wrote to memory of 3124	4648	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\ddosziller.exe
"C:\Users\Admin\AppData\Local\Temp\ddosziller.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3148
- 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:1416
- - 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:4008
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp90A7.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4648
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4856
- - 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:3124

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

Query Registry

1

T1012

System Information Discovery

2

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\tmp90A7.tmp.bat

Filesize
149B

MD5
0b13b8d72adf61bd909063eb30d53a3f

SHA1
ac8e103d6b97933843a86ab493c7155f6829c914

SHA256
35d44de108d53bafc0b4fa4aec95cc1bca308020f6dc407b48122117091e3955

SHA512
d03f7e51676aa99057c25a97affa660a891513867d5dc28d8deac83e1efdf8376e7496ee9dd8a846b74dd2f168bd39c098069aee62a46d5fff3d48c651cc8aac

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

Filesize
47KB

MD5
fcd50c790fc613bb52c7cea78a90d7ba

SHA1
06197d1e57e63af0b898de2b8388c447e2c6cc71

SHA256
1a626198cb756125b04335293477b64d6bf0b8c1a3c9dbee117afd247fa477d6

SHA512
1e9c923d08fae0818ba190efa1f7199ded9a04687022832730107cc9f9383262da14555d06f366df2b73123182ad4c9033a7205efc75b9535e39b8e676aef86c

Download Submit
memory/3124-13-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3124-14-0x0000000074ED0000-0x0000000075680000-memory.dmp

Filesize
7.7MB

Download
memory/3148-0-0x0000000074F8E000-0x0000000074F8F000-memory.dmp

Filesize
4KB

Download
memory/3148-1-0x00000000007A0000-0x00000000007B2000-memory.dmp

Filesize
72KB

Download
memory/3148-2-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download
memory/3148-3-0x00000000051D0000-0x000000000526C000-memory.dmp

Filesize
624KB

Download
memory/3148-8-0x0000000074F80000-0x0000000075730000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads