asyncrat | 5e807de88a43edb7b341ed17b4e218f35c3204bf5dc969c131792b0a23e9ddc1

Analysis

max time kernel
145s
max time network
132s
platform
windows7_x64
resource
win7-20241023-en
resource tags

arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system
submitted
22/03/2025, 06:17

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

e37b2913aafb08ae275e16364b9916c6.exe
Size

47KB
MD5

e37b2913aafb08ae275e16364b9916c6
SHA1

cc840be551dcca5c271f5263df5d3953860c33ea
SHA256

37a8613cdcd090ed1de2608fc32b10bf2f50f3cbd2915d45f5965709e037e7e0
SHA512

15792ae8103af2671b0cdbacfe98ae92eb869a9e8c1856e042a2cd602414e423d60544f1dad1f4338ba4ea7ca4b33b240c5aa8136dee6a22ea47f195cd6b25a3
SSDEEP

768:12uI1tT/w70kWUquzumo2qzT20Ek+ZT4DPIE0kZw/kTJX0bie81f4GoCCQKHv3c1:12uI1tT/kW210h+ZT4ME0h/eCbie8mGb

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

Mutex

xwtmpZSwsYCz

Attributes

delay
3
install
true
install_file
Image.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
behavioral21/files/0x000c00000001202c-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2900	Image.exe

Loads dropped DLL 1 IoCs

pid	Process
2892	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	e37b2913aafb08ae275e16364b9916c6.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	Image.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2828	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
2944	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2432	e37b2913aafb08ae275e16364b9916c6.exe
2432	e37b2913aafb08ae275e16364b9916c6.exe
2432	e37b2913aafb08ae275e16364b9916c6.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2432	e37b2913aafb08ae275e16364b9916c6.exe
Token: SeDebugPrivilege	2900	Image.exe
Token: SeDebugPrivilege	2900	Image.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2420	2432	e37b2913aafb08ae275e16364b9916c6.exe	32
PID 2432 wrote to memory of 2420	2432	e37b2913aafb08ae275e16364b9916c6.exe	32
PID 2432 wrote to memory of 2420	2432	e37b2913aafb08ae275e16364b9916c6.exe	32
PID 2432 wrote to memory of 2420	2432	e37b2913aafb08ae275e16364b9916c6.exe	32
PID 2432 wrote to memory of 2892	2432	e37b2913aafb08ae275e16364b9916c6.exe	34
PID 2432 wrote to memory of 2892	2432	e37b2913aafb08ae275e16364b9916c6.exe	34
PID 2432 wrote to memory of 2892	2432	e37b2913aafb08ae275e16364b9916c6.exe	34
PID 2432 wrote to memory of 2892	2432	e37b2913aafb08ae275e16364b9916c6.exe	34
PID 2420 wrote to memory of 2944	2420	cmd.exe	36
PID 2420 wrote to memory of 2944	2420	cmd.exe	36
PID 2420 wrote to memory of 2944	2420	cmd.exe	36
PID 2420 wrote to memory of 2944	2420	cmd.exe	36
PID 2892 wrote to memory of 2828	2892	cmd.exe	37
PID 2892 wrote to memory of 2828	2892	cmd.exe	37
PID 2892 wrote to memory of 2828	2892	cmd.exe	37
PID 2892 wrote to memory of 2828	2892	cmd.exe	37
PID 2892 wrote to memory of 2900	2892	cmd.exe	38
PID 2892 wrote to memory of 2900	2892	cmd.exe	38
PID 2892 wrote to memory of 2900	2892	cmd.exe	38
PID 2892 wrote to memory of 2900	2892	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\e37b2913aafb08ae275e16364b9916c6.exe
"C:\Users\Admin\AppData\Local\Temp\e37b2913aafb08ae275e16364b9916c6.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Image" /tr '"C:\Users\Admin\AppData\Roaming\Image.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2420
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Image" /tr '"C:\Users\Admin\AppData\Roaming\Image.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2944
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF20C.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2892
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2828
- - C:\Users\Admin\AppData\Roaming\Image.exe
    "C:\Users\Admin\AppData\Roaming\Image.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2900

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF20C.tmp.bat

Filesize
149B

MD5
d9c4b10bbbb4eed55dffcc605d56a7f2

SHA1
92c5240c9a2a0fd7e224f11653edf887e9f17a56

SHA256
6b78297925c8773ae7dd38afd359cbd766f1446f670458e53da0bb2c13e6ef1a

SHA512
9d9606562aab3a7c512389d98c6baba2ab32f197cedc119e578a3a5cbd0d992768018dbcbd9fa14237c2afc1d923f57fce084d7ed22a4fae809701d28153de8d

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

Filesize
47KB

MD5
e37b2913aafb08ae275e16364b9916c6

SHA1
cc840be551dcca5c271f5263df5d3953860c33ea

SHA256
37a8613cdcd090ed1de2608fc32b10bf2f50f3cbd2915d45f5965709e037e7e0

SHA512
15792ae8103af2671b0cdbacfe98ae92eb869a9e8c1856e042a2cd602414e423d60544f1dad1f4338ba4ea7ca4b33b240c5aa8136dee6a22ea47f195cd6b25a3

Download Submit
memory/2432-0-0x000000007440E000-0x000000007440F000-memory.dmp

Filesize
4KB

Download
memory/2432-1-0x0000000000CB0000-0x0000000000CC2000-memory.dmp

Filesize
72KB

Download
memory/2432-2-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2432-12-0x0000000074400000-0x0000000074AEE000-memory.dmp

Filesize
6.9MB

Download
memory/2900-16-0x0000000001180000-0x0000000001192000-memory.dmp

Filesize
72KB

Download