asyncrat | 308e5523c1588d1ba9b89d48c32a0171a674f34c8e50407cc307b56d92bb9a52

General

Target

b755853833e683e601e838ed7ca54867.exe
Size

47KB
MD5

b755853833e683e601e838ed7ca54867
SHA1

9ff8bf2710cfd25fa0fd07ea10e10f76910989a9
SHA256

308e5523c1588d1ba9b89d48c32a0171a674f34c8e50407cc307b56d92bb9a52
SHA512

6fe4139253b06499c735d1131fe368f93a064b573d8b7befd23836b707adda6adcdde991a49886d83dec7d08c3f6fba66ef083c5270c253162c59db88250b193
SSDEEP

768:kuI7lT8kPK2WUwq2Mmo2qsLe2TSKMfjPdPI7OS8hV/s0bNAtbamdxnHNlHt/1zwc:kuI7lT8kD2rHMLyiS8bNAtnrY3dgx

Score

10^/10

asyncrat allahsiz discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Allahsiz

C2

45.95.214.119:8080

Mutex

euU8bJbAjw5V

Attributes

delay
3
install
true
install_file
Runtime Broker.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/files/0x000a00000001202a-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

Runtime Broker.exe

pid	Process
2728	Runtime Broker.exe

Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid	Process
1856	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:

b755853833e683e601e838ed7ca54867.execmd.execmd.exeschtasks.exetimeout.exeRuntime Broker.exe

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b755853833e683e601e838ed7ca54867.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	Runtime Broker.exe

Delays execution with timeout.exe 1 IoCs

evasion

Processes:

timeout.exe

pid	Process
2880	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
2820	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

b755853833e683e601e838ed7ca54867.exe

pid	Process
2348	b755853833e683e601e838ed7ca54867.exe
2348	b755853833e683e601e838ed7ca54867.exe
2348	b755853833e683e601e838ed7ca54867.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

b755853833e683e601e838ed7ca54867.exeRuntime Broker.exe

description	pid	Process
Token: SeDebugPrivilege	2348	b755853833e683e601e838ed7ca54867.exe
Token: SeDebugPrivilege	2728	Runtime Broker.exe
Token: SeDebugPrivilege	2728	Runtime Broker.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

b755853833e683e601e838ed7ca54867.execmd.execmd.exe

description	pid	Process	procid_target
PID 2348 wrote to memory of 2412	2348	b755853833e683e601e838ed7ca54867.exe	31
PID 2348 wrote to memory of 2412	2348	b755853833e683e601e838ed7ca54867.exe	31
PID 2348 wrote to memory of 2412	2348	b755853833e683e601e838ed7ca54867.exe	31
PID 2348 wrote to memory of 2412	2348	b755853833e683e601e838ed7ca54867.exe	31
PID 2348 wrote to memory of 1856	2348	b755853833e683e601e838ed7ca54867.exe	33
PID 2348 wrote to memory of 1856	2348	b755853833e683e601e838ed7ca54867.exe	33
PID 2348 wrote to memory of 1856	2348	b755853833e683e601e838ed7ca54867.exe	33
PID 2348 wrote to memory of 1856	2348	b755853833e683e601e838ed7ca54867.exe	33
PID 2412 wrote to memory of 2820	2412	cmd.exe	35
PID 2412 wrote to memory of 2820	2412	cmd.exe	35
PID 2412 wrote to memory of 2820	2412	cmd.exe	35
PID 2412 wrote to memory of 2820	2412	cmd.exe	35
PID 1856 wrote to memory of 2880	1856	cmd.exe	36
PID 1856 wrote to memory of 2880	1856	cmd.exe	36
PID 1856 wrote to memory of 2880	1856	cmd.exe	36
PID 1856 wrote to memory of 2880	1856	cmd.exe	36
PID 1856 wrote to memory of 2728	1856	cmd.exe	37
PID 1856 wrote to memory of 2728	1856	cmd.exe	37
PID 1856 wrote to memory of 2728	1856	cmd.exe	37
PID 1856 wrote to memory of 2728	1856	cmd.exe	37

C:\Users\Admin\AppData\Local\Temp\b755853833e683e601e838ed7ca54867.exe
"C:\Users\Admin\AppData\Local\Temp\b755853833e683e601e838ed7ca54867.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2348
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2412
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Runtime Broker" /tr '"C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2820
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpB117.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1856
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2880
- - C:\Users\Admin\AppData\Roaming\Runtime Broker.exe
    "C:\Users\Admin\AppData\Roaming\Runtime Broker.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2728

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\CabCCB3.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpB117.tmp.bat

Filesize
158B

MD5
04b4c4633ad331e85e532312cb607e31

SHA1
c25b9ccd38c91d2168d9a3eaa78c1691ccefe3d4

SHA256
84158ad0ed8b87826a16ad5b835318313c2413f043ed74e933d60ea2d4aa0085

SHA512
6cbf05b8fa4a9e105207447113a451fa768be781e3d94aef493df035d746f21d34a00e436274eae37160a76a4222f1980316f0d5a66e8944b3d68e27c020edec

Download Submit
\Users\Admin\AppData\Roaming\Runtime Broker.exe

Filesize
47KB

MD5
b755853833e683e601e838ed7ca54867

SHA1
9ff8bf2710cfd25fa0fd07ea10e10f76910989a9

SHA256
308e5523c1588d1ba9b89d48c32a0171a674f34c8e50407cc307b56d92bb9a52

SHA512
6fe4139253b06499c735d1131fe368f93a064b573d8b7befd23836b707adda6adcdde991a49886d83dec7d08c3f6fba66ef083c5270c253162c59db88250b193

Download Submit
memory/2348-0-0x00000000741AE000-0x00000000741AF000-memory.dmp

Filesize
4KB

Download
memory/2348-1-0x0000000000CC0000-0x0000000000CD2000-memory.dmp

Filesize
72KB

Download
memory/2348-2-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/2348-11-0x00000000741A0000-0x000000007488E000-memory.dmp

Filesize
6.9MB

Download
memory/2728-16-0x0000000000D70000-0x0000000000D82000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads