asyncrat | 79e4529eb9613989a760fb10eccc92512bf2a3ba625d8371abbe0a3a7aeac881

General

Target

NewTool.exe
Size

47KB
MD5

4fb61dba133356d2b19f9b8898d3a371
SHA1

1b7ed75f06bd691e7f4a3fcd490f8e13cac99866
SHA256

79e4529eb9613989a760fb10eccc92512bf2a3ba625d8371abbe0a3a7aeac881
SHA512

54e52c62ba11372b7179828e5c6948a70664e094d837e5423b6d01bbfffeaaf4133da5f5cb7cd3362335d11f4ca9f3770095590b030111a9265338ec0e062bb3
SSDEEP

768:UuPfZTg4pYiWUU9jjmo2qrHpluizPITYxHWUi0bupyirUMp/yWqdLkPlO8+BDZsx:UuPfZTgKa2eLuhcYwbuY0cWWodXQdsx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:39027

23.ip.gl.ply.gg:6606

23.ip.gl.ply.gg:39027

Mutex

KMxSTjP3MWlf

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
Asyncrat family
asyncrat
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 4 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:

NewTool.execmd.exeshutdown.execsrss.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	NewTool.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	shutdown.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\Nls\Language	csrss.exe

Enumerates system info in registry 2 TTPs 32 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

csrss.exe

description	ioc	process
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Component Information	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Component Information	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Identifier	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key enumerated	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Configuration Data	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2\Component Information	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Component Information	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\1\Configuration Data	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\1\KeyboardController	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\2	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\Component Information	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController\0\KeyboardPeripheral\0\Configuration Data	csrss.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\Identifier	csrss.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\SYSTEM\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter\0\KeyboardController	csrss.exe
Key queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\MultifunctionAdapter	csrss.exe

Modifies data under HKEY_USERS 9 IoCs

Processes:

winlogon.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ThemeActive = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LoadedBefore = "1"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\ColorName = "NormalColor"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\SizeName = "NormalSize"	winlogon.exe
Set value (data)	\REGISTRY\USER\.DEFAULT\Control Panel\Desktop\MuiCached\MachinePreferredUILanguages = 65006e002d00550053000000	winlogon.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\ThemeManager	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastUserLangID = "1033"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\LastLoadedDPI = "96"	winlogon.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\SOFTWARE\Microsoft\Windows\CurrentVersion\ThemeManager\DllName = "%SystemRoot%\\resources\\themes\\Aero\\Aero.msstyles"	winlogon.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

NewTool.exeLogonUI.exe

description pid process

Token: SeDebugPrivilege 108 NewTool.exe
Token: SeShutdownPrivilege 960 LogonUI.exe
Token: SeShutdownPrivilege 960 LogonUI.exe

description	pid	process
Token: SeDebugPrivilege	108	NewTool.exe
Token: SeShutdownPrivilege	960	LogonUI.exe
Token: SeShutdownPrivilege	960	LogonUI.exe

Suspicious use of WriteProcessMemory 21 IoCs

Processes:

NewTool.execmd.execsrss.exewinlogon.exe

description	pid	process	target process
PID 108 wrote to memory of 1816	108	NewTool.exe	cmd.exe
PID 108 wrote to memory of 1816	108	NewTool.exe	cmd.exe
PID 108 wrote to memory of 1816	108	NewTool.exe	cmd.exe
PID 108 wrote to memory of 1816	108	NewTool.exe	cmd.exe
PID 1816 wrote to memory of 1824	1816	cmd.exe	shutdown.exe
PID 1816 wrote to memory of 1824	1816	cmd.exe	shutdown.exe
PID 1816 wrote to memory of 1824	1816	cmd.exe	shutdown.exe
PID 1816 wrote to memory of 1824	1816	cmd.exe	shutdown.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 1060 wrote to memory of 960	1060	winlogon.exe	LogonUI.exe
PID 1060 wrote to memory of 960	1060	winlogon.exe	LogonUI.exe
PID 1060 wrote to memory of 960	1060	winlogon.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe
PID 2600 wrote to memory of 960	2600	csrss.exe	LogonUI.exe

C:\Users\Admin\AppData\Local\Temp\NewTool.exe
"C:\Users\Admin\AppData\Local\Temp\NewTool.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:108

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c Shutdown /l /f
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1816

C:\Windows\SysWOW64\shutdown.exe
Shutdown /l /f
3⤵
- System Location Discovery: System Language Discovery
PID:1824

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
1⤵
PID:784

C:\Windows\system32\csrss.exe
%SystemRoot%\system32\csrss.exe ObjectDirectory=\Windows SharedSection=1024,20480,768 Windows=On SubSystemType=Windows ServerDll=basesrv,1 ServerDll=winsrv:UserServerDllInitialization,3 ServerDll=winsrv:ConServerDllInitialization,2 ServerDll=sxssrv,4 ProfileControl=Off MaxRequestThreads=16
1⤵
- System Location Discovery: System Language Discovery
- Enumerates system info in registry
- Suspicious use of WriteProcessMemory
PID:2600

C:\Windows\system32\winlogon.exe
winlogon.exe
1⤵
- Modifies data under HKEY_USERS
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\system32\LogonUI.exe
"LogonUI.exe" /flags:0x0
2⤵
- Suspicious use of AdjustPrivilegeToken
PID:960

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab7EF2.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar51EC.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
memory/108-0-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/108-1-0x0000000001090000-0x00000000010A2000-memory.dmp

Filesize
72KB

Download
memory/108-2-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/108-3-0x00000000749AE000-0x00000000749AF000-memory.dmp

Filesize
4KB

Download
memory/108-4-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/108-40-0x0000000004C00000-0x0000000004C64000-memory.dmp

Filesize
400KB

Download
memory/108-59-0x00000000749A0000-0x000000007508E000-memory.dmp

Filesize
6.9MB

Download
memory/784-60-0x0000000002A40000-0x0000000002A41000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads