asyncrat | 9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed

General

Target

9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe
Size

238KB
MD5

9d1e589ea8c4b3c59d3fb46afa940da5
SHA1

817bf841284e0279d15cb27f73a0939344dfb811
SHA256

9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed
SHA512

a7db38a58cf9580c987fe6c3293dc279a67458850862d86d0cc60fb7c9213bf92311be2a8ac44ae055fd24619df8f76d33f32835a254d386e4e53e2602d63ac2
SSDEEP

3072:/Yzwrq5J9SwHMFF9Kw/kxLk42s/8Y31/Yvi9GA54IkMwP5gMTmmsolNIrRuw+mqM:A9zHMFF9KxLp8YFgvwmZrTmDAN

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

54.253.7.109:4447

Mutex

XqcNee3124zJ

Attributes

delay
21
install
true
install_file
service.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

Processes:

resource	yara_rule
behavioral1/memory/2380-2-0x0000000000220000-0x0000000000232000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

service.exe

pid	Process
2616	service.exe

Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid	Process
2788	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

Processes:

timeout.exeservice.exe9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.execmd.execmd.exeschtasks.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	service.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.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

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2528	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

Processes:

schtasks.exe

pid	Process
2800	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe

pid	Process
2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe
2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe
2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exeservice.exe

description	pid	Process
Token: SeDebugPrivilege	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe
Token: SeDebugPrivilege	2616	service.exe
Token: SeDebugPrivilege	2616	service.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.execmd.execmd.exe

description	pid	Process	procid_target
PID 2380 wrote to memory of 2764	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	32
PID 2380 wrote to memory of 2764	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	32
PID 2380 wrote to memory of 2764	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	32
PID 2380 wrote to memory of 2764	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	32
PID 2380 wrote to memory of 2788	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	34
PID 2380 wrote to memory of 2788	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	34
PID 2380 wrote to memory of 2788	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	34
PID 2380 wrote to memory of 2788	2380	9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe	34
PID 2764 wrote to memory of 2800	2764	cmd.exe	36
PID 2764 wrote to memory of 2800	2764	cmd.exe	36
PID 2764 wrote to memory of 2800	2764	cmd.exe	36
PID 2764 wrote to memory of 2800	2764	cmd.exe	36
PID 2788 wrote to memory of 2528	2788	cmd.exe	37
PID 2788 wrote to memory of 2528	2788	cmd.exe	37
PID 2788 wrote to memory of 2528	2788	cmd.exe	37
PID 2788 wrote to memory of 2528	2788	cmd.exe	37
PID 2788 wrote to memory of 2616	2788	cmd.exe	38
PID 2788 wrote to memory of 2616	2788	cmd.exe	38
PID 2788 wrote to memory of 2616	2788	cmd.exe	38
PID 2788 wrote to memory of 2616	2788	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe
"C:\Users\Admin\AppData\Local\Temp\9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "service" /tr '"C:\Users\Admin\AppData\Roaming\service.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2764
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "service" /tr '"C:\Users\Admin\AppData\Roaming\service.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2800
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3978.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2788
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2528
- - C:\Users\Admin\AppData\Roaming\service.exe
    "C:\Users\Admin\AppData\Roaming\service.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2616

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\tmp3978.tmp.bat

Filesize
151B

MD5
7089ad2f56eacf51be94722b4dfb5c3d

SHA1
1bdd3cd64b71ead0de04e0835334c1e05f7cfca9

SHA256
c28e0818fc81941870c4a58ae839c03d2c0ac22d746bddc1a0b7f1f35ca8f023

SHA512
3e973d9b8ec1173dff913857e6a2f9e906dda1a71e39990fa589977feb94c0e3e5c035246ca58cf1bb56e4399849355b662cadaf0ad17a284221f02d8350a725

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

Filesize
238KB

MD5
9d1e589ea8c4b3c59d3fb46afa940da5

SHA1
817bf841284e0279d15cb27f73a0939344dfb811

SHA256
9164f89ff66d0726e661c46dbafabf82c477a61b6d9a231170fd26910997c8ed

SHA512
a7db38a58cf9580c987fe6c3293dc279a67458850862d86d0cc60fb7c9213bf92311be2a8ac44ae055fd24619df8f76d33f32835a254d386e4e53e2602d63ac2

Download Submit
memory/2380-0-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2380-1-0x0000000000810000-0x0000000000852000-memory.dmp

Filesize
264KB

Download
memory/2380-2-0x0000000000220000-0x0000000000232000-memory.dmp

Filesize
72KB

Download
memory/2380-3-0x0000000074ADE000-0x0000000074ADF000-memory.dmp

Filesize
4KB

Download
memory/2380-4-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/2380-13-0x0000000074AD0000-0x00000000751BE000-memory.dmp

Filesize
6.9MB

Download
memory/2616-18-0x0000000000EA0000-0x0000000000EE2000-memory.dmp

Filesize
264KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads