asyncrat | bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8

General

Target

JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe
Size

45KB
MD5

70ad7f173c8545db329659103e544d16
SHA1

785741ed4a6ecb0557a7005ba05cef553ee6bcb8
SHA256

bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8
SHA512

95fbed989354dd78f361776d8597306c41db1ee8b76f9796dc8a5846a47239b405e5b263314667638f7e014e7cb5d1470137b85f6cdf73a0b4f901a8956131a8
SSDEEP

768:buqg9T944nD5WUxiVDmo2qrjKjGKG6PIyzjbFgX3iHCVRVqYL2qFBDZrx:buqg9T9xy2uKYDy3bCXSiVRNfdrx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

127.0.0.1:1604

127.0.0.1:16961

4.tcp.eu.ngrok.io:6606

4.tcp.eu.ngrok.io:7707

4.tcp.eu.ngrok.io:8808

4.tcp.eu.ngrok.io:1604

4.tcp.eu.ngrok.io:16961

Mutex

AsyncMutex_6SI8OkPnk

Attributes

delay
3
install
true
install_file
123.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/0x000b000000012262-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2104	123.exe

Loads dropped DLL 1 IoCs

pid	Process
2780	cmd.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 3 IoCs

Web Service

T1102

flow	ioc
2	4.tcp.eu.ngrok.io
10	4.tcp.eu.ngrok.io
15	4.tcp.eu.ngrok.io

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	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	123.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2688	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
2712	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe
2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe
2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe
Token: SeDebugPrivilege	2104	123.exe
Token: SeDebugPrivilege	2104	123.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2500 wrote to memory of 3012	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	31
PID 2500 wrote to memory of 3012	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	31
PID 2500 wrote to memory of 3012	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	31
PID 2500 wrote to memory of 3012	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	31
PID 2500 wrote to memory of 2780	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	33
PID 2500 wrote to memory of 2780	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	33
PID 2500 wrote to memory of 2780	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	33
PID 2500 wrote to memory of 2780	2500	JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe	33
PID 2780 wrote to memory of 2688	2780	cmd.exe	35
PID 2780 wrote to memory of 2688	2780	cmd.exe	35
PID 2780 wrote to memory of 2688	2780	cmd.exe	35
PID 2780 wrote to memory of 2688	2780	cmd.exe	35
PID 3012 wrote to memory of 2712	3012	cmd.exe	36
PID 3012 wrote to memory of 2712	3012	cmd.exe	36
PID 3012 wrote to memory of 2712	3012	cmd.exe	36
PID 3012 wrote to memory of 2712	3012	cmd.exe	36
PID 2780 wrote to memory of 2104	2780	cmd.exe	37
PID 2780 wrote to memory of 2104	2780	cmd.exe	37
PID 2780 wrote to memory of 2104	2780	cmd.exe	37
PID 2780 wrote to memory of 2104	2780	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2500
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "123" /tr '"C:\Users\Admin\AppData\Roaming\123.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:3012
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "123" /tr '"C:\Users\Admin\AppData\Roaming\123.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2712
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6EAB.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2780
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2688
- - C:\Users\Admin\AppData\Roaming\123.exe
    "C:\Users\Admin\AppData\Roaming\123.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2104

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

Web Service

1

T1102

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6EAB.tmp.bat

Filesize
147B

MD5
809c869d08e924e858161650b50c21ea

SHA1
b72c6ef11ee4a39b5ba37c1b475338dd843cf1e5

SHA256
c055e87982ba5d200a890b6a69670fb0c5cff0ac5119fedf3408960301da7482

SHA512
6dade5fc8d9dd29ba539a58b0ba4a4fa9297c432ede3a55a425fe48f7c0fc0c371e37d880d5be44535869b1d9ae17d8948f6527ab3670446bfe556b4c5b006a6

Download Submit
\Users\Admin\AppData\Roaming\123.exe

Filesize
45KB

MD5
70ad7f173c8545db329659103e544d16

SHA1
785741ed4a6ecb0557a7005ba05cef553ee6bcb8

SHA256
bc2fde8d86c4308624e3ac07e9d1f7435e3b220380fc2763ab43b5eb8c22c2c8

SHA512
95fbed989354dd78f361776d8597306c41db1ee8b76f9796dc8a5846a47239b405e5b263314667638f7e014e7cb5d1470137b85f6cdf73a0b4f901a8956131a8

Download Submit
memory/2104-16-0x0000000001150000-0x0000000001162000-memory.dmp

Filesize
72KB

Download
memory/2500-0-0x0000000074ACE000-0x0000000074ACF000-memory.dmp

Filesize
4KB

Download
memory/2500-1-0x00000000011A0000-0x00000000011B2000-memory.dmp

Filesize
72KB

Download
memory/2500-2-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download
memory/2500-12-0x0000000074AC0000-0x00000000751AE000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads