asyncrat | e40dd437b2cad30c5fa480ce932710e4121630d9d48aba6c8527a3d6f006ea21

General

Target

f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe
Size

414KB
MD5

f569525615c7585c5e54720d11bc1ab7
SHA1

c0f6869db5365d4be5c7f381f10175f18eb9b95c
SHA256

e40dd437b2cad30c5fa480ce932710e4121630d9d48aba6c8527a3d6f006ea21
SHA512

603cac841e9168d3ac7e4502d1f3f481e624854a6fe4265a53333b0adcafc1daaaee91e0694d6a82c2c061a108a8d71f371c7b1abd6ee1d9e76c437c96bcbed3
SSDEEP

3072:0D32GhNvy+CFkUtzqJUtIFwl2BaxTXnY+nVugK0ia/Ch501GB2qwUxe0:U2GhN6bFkUtmloxBVvJK50kgqwU

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

pornox.ddns.net:5552

Mutex

ok

Attributes

delay
3
install
true
install_file
WindowsShortcut.exe
install_folder
%Temp%

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/0x000b000000023b69-9.dat	family_asyncrat

Checks computer location settings 2 TTPs 2 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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	WindowsSecurity.bat

Executes dropped EXE 2 IoCs

pid	Process
4048	WindowsSecurity.bat
2940	WindowsShortcut.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 7 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	WindowsSecurity.bat
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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WindowsShortcut.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1704	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
1376	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat
4048	WindowsSecurity.bat

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4048	WindowsSecurity.bat
Token: SeDebugPrivilege	2940	WindowsShortcut.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 3084 wrote to memory of 4048	3084	f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe	82
PID 3084 wrote to memory of 4048	3084	f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe	82
PID 3084 wrote to memory of 4048	3084	f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe	82
PID 4048 wrote to memory of 1736	4048	WindowsSecurity.bat	83
PID 4048 wrote to memory of 1736	4048	WindowsSecurity.bat	83
PID 4048 wrote to memory of 1736	4048	WindowsSecurity.bat	83
PID 4048 wrote to memory of 1872	4048	WindowsSecurity.bat	85
PID 4048 wrote to memory of 1872	4048	WindowsSecurity.bat	85
PID 4048 wrote to memory of 1872	4048	WindowsSecurity.bat	85
PID 1872 wrote to memory of 1704	1872	cmd.exe	87
PID 1872 wrote to memory of 1704	1872	cmd.exe	87
PID 1872 wrote to memory of 1704	1872	cmd.exe	87
PID 1736 wrote to memory of 1376	1736	cmd.exe	88
PID 1736 wrote to memory of 1376	1736	cmd.exe	88
PID 1736 wrote to memory of 1376	1736	cmd.exe	88
PID 1872 wrote to memory of 2940	1872	cmd.exe	89
PID 1872 wrote to memory of 2940	1872	cmd.exe	89
PID 1872 wrote to memory of 2940	1872	cmd.exe	89

C:\Users\Admin\AppData\Local\Temp\f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f569525615c7585c5e54720d11bc1ab7_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3084
- C:\Users\Admin\AppData\Local\Temp\WindowsSecurity.bat
  "C:\Users\Admin\AppData\Local\Temp\WindowsSecurity.bat"
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:4048
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WindowsShortcut" /tr '"C:\Users\Admin\AppData\Local\Temp\WindowsShortcut.exe"' & exit
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1736
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "WindowsShortcut" /tr '"C:\Users\Admin\AppData\Local\Temp\WindowsShortcut.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:1376
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9933.tmp.bat""
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:1872
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:1704
  - - C:\Users\Admin\AppData\Local\Temp\WindowsShortcut.exe
      "C:\Users\Admin\AppData\Local\Temp\WindowsShortcut.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:2940

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\WindowsSecurity.bat

Filesize
47KB

MD5
2c24055f43f371dbf0e7a3ff2c43dfd4

SHA1
bf7625ce4c23aabd0c75a92dbbc0d5fe75d138c2

SHA256
6ddf626b13e883ad07c72ff1f135015d47ff81dc82e0c9759690d4448636178d

SHA512
63585a42f3b96f72cb591994c636242a4858483d010b1d71a02f440167aee3a9a17007d035c77dcc7f6f4cb341d8a766b62eb69651504236b2c594fca602250a

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp9933.tmp.bat

Filesize
162B

MD5
0855d54e1a37ef65288b634520f0550c

SHA1
07b5b1e5ed2b0dcc62176e2418d0075fe9363a95

SHA256
76c01e3c57640f2a8f966d579817251ce2830f728b4d6a2997dacecedc8a944f

SHA512
7181e55c3f44285bf6a60c3304123ff8afedb3f559605874f8dd8cdbb1e37c4ecdc755cb241f44f62414667d23621faa13ba5b22fab11b56f6b04f36f8bb1fdb

Download Submit
memory/3084-3-0x0000000004D40000-0x0000000004DD2000-memory.dmp

Filesize
584KB

Download
memory/3084-0-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/3084-4-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/3084-5-0x0000000004DF0000-0x0000000004DFA000-memory.dmp

Filesize
40KB

Download
memory/3084-2-0x0000000005440000-0x00000000059E4000-memory.dmp

Filesize
5.6MB

Download
memory/3084-1-0x0000000000330000-0x000000000039C000-memory.dmp

Filesize
432KB

Download
memory/3084-24-0x0000000074C4E000-0x0000000074C4F000-memory.dmp

Filesize
4KB

Download
memory/3084-25-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4048-11-0x0000000000320000-0x0000000000332000-memory.dmp

Filesize
72KB

Download
memory/4048-12-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4048-13-0x0000000074C40000-0x00000000753F0000-memory.dmp

Filesize
7.7MB

Download
memory/4048-14-0x0000000004C30000-0x0000000004CCC000-memory.dmp

Filesize
624KB

Download
memory/4048-19-0x0000000074C40000-0x00000000753F0000-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