asyncrat | 3ca87f4622aad2d17c69341784de12eca6cd8e4a1ff7daa39bfd0571a8b08042

General

Target

aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe
Size

45KB
MD5

aa8a077a0ac1d57d6b4dc32d5c921fb7
SHA1

d7573031d52b833c53c7aa36634a550a2901c75d
SHA256

3ca87f4622aad2d17c69341784de12eca6cd8e4a1ff7daa39bfd0571a8b08042
SHA512

6399cf0abf957f2b475bb58747961fc12ffcf4ec58fc07120a3638240b9e9e797b7b1916c925493efb87811c8ebd160f6938a005ecaf59fd4777059667d3e7cf
SSDEEP

768:juQ3tT/QUscWUCTzGmo2q8sFuzOPIxYjbrgX3ijkn+9P/LombBDZ/x:juQ3tT/LJ2x3xQbUXSw+lNNd/x

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

anhphux4-24035.portmap.host:24035

anhphux4-24035.portmap.host:2468

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
host.dll.exe
install_folder
%Temp%

aes.plain

Signatures

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x000900000001225f-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2656	host.dll.exe

Loads dropped DLL 1 IoCs

pid	Process
2712	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	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.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	host.dll.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2800	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
2672	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe
2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe
2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe
Token: SeDebugPrivilege	2656	host.dll.exe
Token: SeDebugPrivilege	2656	host.dll.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2360 wrote to memory of 2748	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	32
PID 2360 wrote to memory of 2748	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	32
PID 2360 wrote to memory of 2748	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	32
PID 2360 wrote to memory of 2748	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	32
PID 2360 wrote to memory of 2712	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	34
PID 2360 wrote to memory of 2712	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	34
PID 2360 wrote to memory of 2712	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	34
PID 2360 wrote to memory of 2712	2360	aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe	34
PID 2712 wrote to memory of 2800	2712	cmd.exe	37
PID 2712 wrote to memory of 2800	2712	cmd.exe	37
PID 2712 wrote to memory of 2800	2712	cmd.exe	37
PID 2712 wrote to memory of 2800	2712	cmd.exe	37
PID 2748 wrote to memory of 2672	2748	cmd.exe	36
PID 2748 wrote to memory of 2672	2748	cmd.exe	36
PID 2748 wrote to memory of 2672	2748	cmd.exe	36
PID 2748 wrote to memory of 2672	2748	cmd.exe	36
PID 2712 wrote to memory of 2656	2712	cmd.exe	38
PID 2712 wrote to memory of 2656	2712	cmd.exe	38
PID 2712 wrote to memory of 2656	2712	cmd.exe	38
PID 2712 wrote to memory of 2656	2712	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\aa8a077a0ac1d57d6b4dc32d5c921fb7_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2360
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "host.dll" /tr '"C:\Users\Admin\AppData\Local\Temp\host.dll.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2748
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "host.dll" /tr '"C:\Users\Admin\AppData\Local\Temp\host.dll.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2672
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp30D.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2712
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2800
- - C:\Users\Admin\AppData\Local\Temp\host.dll.exe
    "C:\Users\Admin\AppData\Local\Temp\host.dll.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2656

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\tmp30D.tmp.bat

Filesize
154B

MD5
973575ca9aff8da20de5f32ddc6e0935

SHA1
e865583e84a7a72a9d9e060b9f822665991c6f83

SHA256
7a1bd5fd7fddc72cf1955f20cf4cb4e16c3ec8259c66de585c67b77ddc863a64

SHA512
c164e0017e83afe6a7559c099b99d8a203d36beb2531f1fbf5721cff0a23134fda30e41c4b7891cabf9f48d50c33fe3bd92357d47edc03768d8397a835fc987a

Download Submit
\Users\Admin\AppData\Local\Temp\host.dll.exe

Filesize
45KB

MD5
aa8a077a0ac1d57d6b4dc32d5c921fb7

SHA1
d7573031d52b833c53c7aa36634a550a2901c75d

SHA256
3ca87f4622aad2d17c69341784de12eca6cd8e4a1ff7daa39bfd0571a8b08042

SHA512
6399cf0abf957f2b475bb58747961fc12ffcf4ec58fc07120a3638240b9e9e797b7b1916c925493efb87811c8ebd160f6938a005ecaf59fd4777059667d3e7cf

Download Submit
memory/2360-0-0x0000000074DEE000-0x0000000074DEF000-memory.dmp

Filesize
4KB

Download
memory/2360-1-0x0000000000990000-0x00000000009A2000-memory.dmp

Filesize
72KB

Download
memory/2360-2-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2360-11-0x0000000074DE0000-0x00000000754CE000-memory.dmp

Filesize
6.9MB

Download
memory/2656-16-0x00000000010E0000-0x00000000010F2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads