asyncrat | 70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd

General

Target

70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
Size

47KB
MD5

670d1014ec5713d005f8ddfefc495a9e
SHA1

91362eaf33dc55e4d970fbefbda975be32628d6b
SHA256

70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd
SHA512

175827b48f35899e89fcbdacd2e98b378b92abc8e7a1c225441f57a46d02fea838104e3d6480a137f401c72e2d7979ff3db7a74d5c52e84a0733246f0fa5384f
SSDEEP

768:EuwpFTAY3IQWUe9jqmo2qLPzXR8myUdPIvfc2C0b2lnNPVPUXHyk/UQsS25BDZ8x:EuwpFTA4/2KRx0vfb9bgnTUXHmpS2nd+

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

176.111.174.140:6606

176.111.174.140:7707

176.111.174.140:8808

Mutex

PWhSiRkcxVoa

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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x00070000000120fe-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1924	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2612	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	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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2940	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
2972	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
Token: SeDebugPrivilege	1924	svchost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 288 wrote to memory of 1716	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	30
PID 288 wrote to memory of 1716	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	30
PID 288 wrote to memory of 1716	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	30
PID 288 wrote to memory of 1716	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	30
PID 288 wrote to memory of 2612	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	32
PID 288 wrote to memory of 2612	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	32
PID 288 wrote to memory of 2612	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	32
PID 288 wrote to memory of 2612	288	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	32
PID 1716 wrote to memory of 2972	1716	cmd.exe	34
PID 1716 wrote to memory of 2972	1716	cmd.exe	34
PID 1716 wrote to memory of 2972	1716	cmd.exe	34
PID 1716 wrote to memory of 2972	1716	cmd.exe	34
PID 2612 wrote to memory of 2940	2612	cmd.exe	35
PID 2612 wrote to memory of 2940	2612	cmd.exe	35
PID 2612 wrote to memory of 2940	2612	cmd.exe	35
PID 2612 wrote to memory of 2940	2612	cmd.exe	35
PID 2612 wrote to memory of 1924	2612	cmd.exe	36
PID 2612 wrote to memory of 1924	2612	cmd.exe	36
PID 2612 wrote to memory of 1924	2612	cmd.exe	36
PID 2612 wrote to memory of 1924	2612	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
"C:\Users\Admin\AppData\Local\Temp\70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:288
- 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:1716
- - 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:2972
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC487.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2612
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2940
- - 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:1924

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\CabDFC6.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC487.tmp.bat

Filesize
151B

MD5
6b766267cfbb35e54e7fcc567a539ef0

SHA1
20acd639113b6b31848eb2c2263e10ed15552616

SHA256
75f677740141dd712b16cc2cd3f3946dc989ecc82211e3afdb25e4eb02e36db4

SHA512
a39b37d7de2d7e858e2cb015f978da8d073789c00d7f67db47c742e908d589c17402c6e08b4b9348fe7e5983d0c863c8ff2bed666bda99446e309fe7a2d2b899

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

Filesize
47KB

MD5
670d1014ec5713d005f8ddfefc495a9e

SHA1
91362eaf33dc55e4d970fbefbda975be32628d6b

SHA256
70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd

SHA512
175827b48f35899e89fcbdacd2e98b378b92abc8e7a1c225441f57a46d02fea838104e3d6480a137f401c72e2d7979ff3db7a74d5c52e84a0733246f0fa5384f

Download Submit
memory/288-0-0x000000007471E000-0x000000007471F000-memory.dmp

Filesize
4KB

Download
memory/288-1-0x0000000000CD0000-0x0000000000CE2000-memory.dmp

Filesize
72KB

Download
memory/288-2-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/288-11-0x0000000074710000-0x0000000074DFE000-memory.dmp

Filesize
6.9MB

Download
memory/1924-16-0x0000000000DD0000-0x0000000000DE2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads