asyncrat | efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709

General

Target

efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe
Size

47KB
MD5

dbd61ce4a5e30ab3e01f7470f81b8209
SHA1

89f6902857bdbcf4ebf8d8d038b5b9fd930324bf
SHA256

efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709
SHA512

34a1bbd86c2612c030766d5e8d85e1ba5f061a0d58c57a1a213c5d5c59d503e75920fcd4bae0b4770b04f4e5e37d455b3d99e3a8a0e143bb053eb4a109b53b9f
SSDEEP

768:Uu6SVTasQ7mAIWUWj3CCmo2qshLI7hE56ZPILN8vdSTN40bgFa4YVzW5szXjMqat:Uu6SVT3emQ2NMWLNdFbgcnzasDgqazh3

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

45.95.214.119:8080

Mutex

7wmi8SsddCZn

Attributes

delay
3
install
true
install_file
svchost.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/0x00080000000120f9-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2572	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2924	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	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.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

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
2724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe
1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe
1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe
Token: SeDebugPrivilege	2572	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1900 wrote to memory of 2772	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	31
PID 1900 wrote to memory of 2772	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	31
PID 1900 wrote to memory of 2772	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	31
PID 1900 wrote to memory of 2772	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	31
PID 1900 wrote to memory of 2924	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	33
PID 1900 wrote to memory of 2924	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	33
PID 1900 wrote to memory of 2924	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	33
PID 1900 wrote to memory of 2924	1900	efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe	33
PID 2772 wrote to memory of 2724	2772	cmd.exe	35
PID 2772 wrote to memory of 2724	2772	cmd.exe	35
PID 2772 wrote to memory of 2724	2772	cmd.exe	35
PID 2772 wrote to memory of 2724	2772	cmd.exe	35
PID 2924 wrote to memory of 2688	2924	cmd.exe	36
PID 2924 wrote to memory of 2688	2924	cmd.exe	36
PID 2924 wrote to memory of 2688	2924	cmd.exe	36
PID 2924 wrote to memory of 2688	2924	cmd.exe	36
PID 2924 wrote to memory of 2572	2924	cmd.exe	37
PID 2924 wrote to memory of 2572	2924	cmd.exe	37
PID 2924 wrote to memory of 2572	2924	cmd.exe	37
PID 2924 wrote to memory of 2572	2924	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe
"C:\Users\Admin\AppData\Local\Temp\efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1900
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2772
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2724
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp6835.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2924
- - 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\svchost.exe
    "C:\Users\Admin\AppData\Roaming\svchost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2572

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\tmp6835.tmp.bat

Filesize
151B

MD5
26eaa15403893cced64c8bb150d5c0b2

SHA1
2052ed83fde9513e866acc6798b7ca6d10a27afd

SHA256
9b4c204f5f2a2501b791f01824ff12cb1dfab3bfbb1df6e469cfe1d2895770e6

SHA512
4569887cd2f7b2dae1d1fe929b9a1bf39fe4b942adfe2b64974a8381b79c13571e1fb94969fee8cb776b07775e6234d2eea60a1c2d0751969e35d48d11eaf490

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

Filesize
47KB

MD5
dbd61ce4a5e30ab3e01f7470f81b8209

SHA1
89f6902857bdbcf4ebf8d8d038b5b9fd930324bf

SHA256
efb446dd9ce281cdc5d582128182e1c171edcda6e4a475875938713a57a06709

SHA512
34a1bbd86c2612c030766d5e8d85e1ba5f061a0d58c57a1a213c5d5c59d503e75920fcd4bae0b4770b04f4e5e37d455b3d99e3a8a0e143bb053eb4a109b53b9f

Download Submit
memory/1900-0-0x000000007475E000-0x000000007475F000-memory.dmp

Filesize
4KB

Download
memory/1900-1-0x00000000009E0000-0x00000000009F2000-memory.dmp

Filesize
72KB

Download
memory/1900-2-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/1900-11-0x0000000074750000-0x0000000074E3E000-memory.dmp

Filesize
6.9MB

Download
memory/2572-16-0x0000000001020000-0x0000000001032000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads