asyncrat | c0885fb20ec6822ecf51e73751f0192f09f0e747ca20f9b75458222bc4c685e5

General

Target

Rb (1).exe
Size

8.0MB
MD5

ae4ff56ceb6716a8f9338e084f7701d4
SHA1

4cabe539d621d59f41a481ffac48a8cf8592c14d
SHA256

c0885fb20ec6822ecf51e73751f0192f09f0e747ca20f9b75458222bc4c685e5
SHA512

72fee97a9af3d94699af86d85401fc1d2be5b4310661f0860ae78fecc00d8da0aa76554785ec64678d3e98f5040a888f1e7324f11cb7c1c966a6b698d3394838
SSDEEP

1536:M9RvNeRcklHCFmD3IWvPdb1SzXWTkDxaaDE3Zx7FkhDpqFUUQDS+0basrdVsQDQ:cRvi/NIWvPdb2XoJZZmhDpl/uaWdVsv

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

qa.riu.one:1420

Mutex

sVDhayko8Fn8

Attributes

delay
3
install
false
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2628 set thread context of 2056	2628	Rb (1).exe	31

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	Rb (1).exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	vbc.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	cmd.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
2788	schtasks.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2628	Rb (1).exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2056	vbc.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2056	2628	Rb (1).exe	31
PID 2628 wrote to memory of 2696	2628	Rb (1).exe	32
PID 2628 wrote to memory of 2696	2628	Rb (1).exe	32
PID 2628 wrote to memory of 2696	2628	Rb (1).exe	32
PID 2628 wrote to memory of 2696	2628	Rb (1).exe	32
PID 2628 wrote to memory of 2744	2628	Rb (1).exe	34
PID 2628 wrote to memory of 2744	2628	Rb (1).exe	34
PID 2628 wrote to memory of 2744	2628	Rb (1).exe	34
PID 2628 wrote to memory of 2744	2628	Rb (1).exe	34
PID 2744 wrote to memory of 2788	2744	cmd.exe	36
PID 2744 wrote to memory of 2788	2744	cmd.exe	36
PID 2744 wrote to memory of 2788	2744	cmd.exe	36
PID 2744 wrote to memory of 2788	2744	cmd.exe	36
PID 2628 wrote to memory of 2704	2628	Rb (1).exe	37
PID 2628 wrote to memory of 2704	2628	Rb (1).exe	37
PID 2628 wrote to memory of 2704	2628	Rb (1).exe	37
PID 2628 wrote to memory of 2704	2628	Rb (1).exe	37

C:\Users\Admin\AppData\Local\Temp\Rb (1).exe
"C:\Users\Admin\AppData\Local\Temp\Rb (1).exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2628
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:2056
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C mkdir "C:\Users\Admin\AppData\Local\Temp\svc"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2696
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\svc\svc.exe'" /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /sc minute /mo 1 /tn "Nafifas" /tr "'C:\Users\Admin\AppData\Local\Temp\svc\svc.exe'" /f
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2788
- C:\Windows\SysWOW64\cmd.exe
  "cmd.exe" /C copy "C:\Users\Admin\AppData\Local\Temp\Rb (1).exe" "C:\Users\Admin\AppData\Local\Temp\svc\svc.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2704

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:2420

C:\Windows\system32\taskeng.exe
taskeng.exe {A925A814-A047-4BC8-927D-33AE81420999} S-1-5-21-940600906-3464502421-4240639183-1000:MGWWAYYN\Admin:Interactive:[1]
1⤵
PID:2924

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

Scripting

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

Scripting

1

T1064

Credential Access

Discovery

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\Cab5FC.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarEA45.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/2056-19-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-5-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-7-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-6-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-9-0x00000000FFFDE000-0x00000000FFFDF000-memory.dmp

Filesize
4KB

Download
memory/2056-16-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-59-0x0000000000C90000-0x0000000000CF2000-memory.dmp

Filesize
392KB

Download
memory/2056-12-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-11-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-3-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/2056-20-0x0000000074DB0000-0x000000007549E000-memory.dmp

Filesize
6.9MB

Download
memory/2056-40-0x0000000005FE0000-0x0000000006048000-memory.dmp

Filesize
416KB

Download
memory/2056-38-0x0000000074DB0000-0x000000007549E000-memory.dmp

Filesize
6.9MB

Download
memory/2628-2-0x0000000074DB0000-0x000000007549E000-memory.dmp

Filesize
6.9MB

Download
memory/2628-21-0x0000000074DB0000-0x000000007549E000-memory.dmp

Filesize
6.9MB

Download
memory/2628-1-0x00000000010D0000-0x00000000010FE000-memory.dmp

Filesize
184KB

Download
memory/2628-0-0x0000000074DBE000-0x0000000074DBF000-memory.dmp

Filesize
4KB

Download

Resubmissions

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads