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
behavioral2/files/0x000100000002aab0-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2076	svchost.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	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.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	svchost.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1660	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
3040	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe
Token: SeDebugPrivilege	2076	svchost.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 708 wrote to memory of 2884	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	84
PID 708 wrote to memory of 2884	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	84
PID 708 wrote to memory of 2884	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	84
PID 708 wrote to memory of 2768	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	86
PID 708 wrote to memory of 2768	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	86
PID 708 wrote to memory of 2768	708	70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd.exe	86
PID 2884 wrote to memory of 3040	2884	cmd.exe	88
PID 2884 wrote to memory of 3040	2884	cmd.exe	88
PID 2884 wrote to memory of 3040	2884	cmd.exe	88
PID 2768 wrote to memory of 1660	2768	cmd.exe	89
PID 2768 wrote to memory of 1660	2768	cmd.exe	89
PID 2768 wrote to memory of 1660	2768	cmd.exe	89
PID 2768 wrote to memory of 2076	2768	cmd.exe	93
PID 2768 wrote to memory of 2076	2768	cmd.exe	93
PID 2768 wrote to memory of 2076	2768	cmd.exe	93

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:708
- 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:2884
- - 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:3040
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD93.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2768
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:1660
- - 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:2076

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\tmpBD93.tmp.bat

Filesize
151B

MD5
c994b46f74b8e4db07fb7c1bde84e9dd

SHA1
3a7d571d2e03770ccc9e5817f4ecb5febb162d7c

SHA256
e6d4e2eeda9133e7fc5d322c9490e6c27b89f579643ca005442cee29e5032710

SHA512
fbbefdff9a1fde1bce9355ee41b274f919c484deae29771ffa5b5c7bcb377233fe3789ac24f728dbe126734212541e480d67991f990e190cb4c96526a7c8ea07

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

Filesize
47KB

MD5
670d1014ec5713d005f8ddfefc495a9e

SHA1
91362eaf33dc55e4d970fbefbda975be32628d6b

SHA256
70c6d555938fdc95c03f98a7a3a37b607d1dce623663479082c5b9514caa04fd

SHA512
175827b48f35899e89fcbdacd2e98b378b92abc8e7a1c225441f57a46d02fea838104e3d6480a137f401c72e2d7979ff3db7a74d5c52e84a0733246f0fa5384f

Download Submit
memory/708-0-0x0000000074E9E000-0x0000000074E9F000-memory.dmp

Filesize
4KB

Download
memory/708-1-0x00000000007B0000-0x00000000007C2000-memory.dmp

Filesize
72KB

Download
memory/708-2-0x0000000074E90000-0x0000000075641000-memory.dmp

Filesize
7.7MB

Download
memory/708-3-0x0000000005360000-0x00000000053FC000-memory.dmp

Filesize
624KB

Download
memory/708-8-0x0000000074E90000-0x0000000075641000-memory.dmp

Filesize
7.7MB

Download
memory/2076-13-0x0000000074E90000-0x0000000075641000-memory.dmp

Filesize
7.7MB

Download
memory/2076-16-0x0000000005FB0000-0x0000000006556000-memory.dmp

Filesize
5.6MB

Download
memory/2076-17-0x0000000005AB0000-0x0000000005B16000-memory.dmp

Filesize
408KB

Download
memory/2076-18-0x0000000074E90000-0x0000000075641000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads