asyncrat | 14995ab5376dccba2f4e91e4efcf09ab18d5645f262ee8cef70d4da8b9317699

General

Target

rUAE_LPO.com.exe
Size

474KB
MD5

a305269db6286fc4dd1d73ac5d2bf208
SHA1

b8777b46a2b1ae40b8d6ff32cc79174e1e617983
SHA256

14995ab5376dccba2f4e91e4efcf09ab18d5645f262ee8cef70d4da8b9317699
SHA512

d05ea3ea97dfa9001292b3c56de44a6173405d1a7addc5cc08a34cb8b659cf0492dbf3048d59b9132b050187cd9c200cfb9752f3f37cc74cb9c9860afadaa10e
SSDEEP

12288:EfA3XkhMOoltiJu9IRWU/5fV1NJrazIY:tkh5oDiJuKRWU3U0

Score

10^/10

asyncrat coke discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

COKE

C2

quin.ydns.eu:1962

Mutex

8xLI57IVXCDFxeWa@

Attributes

delay
3
install
true
install_file
windowsBook.exe
install_folder
%Temp%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

rUAE_LPO.com.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	rUAE_LPO.com.exe

Executes dropped EXE 2 IoCs

Processes:

windowsBook.exewindowsBook.exe

pid process

384 windowsBook.exe
4392 windowsBook.exe

pid	process
384	windowsBook.exe
4392	windowsBook.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

rUAE_LPO.com.exewindowsBook.exe

description	pid	process	target process
PID 2376 set thread context of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 384 set thread context of 4392	384	windowsBook.exe	windowsBook.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 8 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:

windowsBook.exerUAE_LPO.com.exerUAE_LPO.com.execmd.execmd.exeschtasks.exetimeout.exewindowsBook.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	windowsBook.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rUAE_LPO.com.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rUAE_LPO.com.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	windowsBook.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2948 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

4884 schtasks.exe

pid	process
2948	timeout.exe

pid	process
4884	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

rUAE_LPO.com.exe

pid	process
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe
2292	rUAE_LPO.com.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

rUAE_LPO.com.exewindowsBook.exe

description pid process

Token: SeDebugPrivilege 2292 rUAE_LPO.com.exe
Token: SeDebugPrivilege 4392 windowsBook.exe

description	pid	process
Token: SeDebugPrivilege	2292	rUAE_LPO.com.exe
Token: SeDebugPrivilege	4392	windowsBook.exe

Suspicious use of WriteProcessMemory 31 IoCs

Processes:

rUAE_LPO.com.exerUAE_LPO.com.execmd.execmd.exewindowsBook.exe

description	pid	process	target process
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2376 wrote to memory of 2292	2376	rUAE_LPO.com.exe	rUAE_LPO.com.exe
PID 2292 wrote to memory of 3472	2292	rUAE_LPO.com.exe	cmd.exe
PID 2292 wrote to memory of 3472	2292	rUAE_LPO.com.exe	cmd.exe
PID 2292 wrote to memory of 3472	2292	rUAE_LPO.com.exe	cmd.exe
PID 2292 wrote to memory of 4944	2292	rUAE_LPO.com.exe	cmd.exe
PID 2292 wrote to memory of 4944	2292	rUAE_LPO.com.exe	cmd.exe
PID 2292 wrote to memory of 4944	2292	rUAE_LPO.com.exe	cmd.exe
PID 3472 wrote to memory of 4884	3472	cmd.exe	schtasks.exe
PID 3472 wrote to memory of 4884	3472	cmd.exe	schtasks.exe
PID 3472 wrote to memory of 4884	3472	cmd.exe	schtasks.exe
PID 4944 wrote to memory of 2948	4944	cmd.exe	timeout.exe
PID 4944 wrote to memory of 2948	4944	cmd.exe	timeout.exe
PID 4944 wrote to memory of 2948	4944	cmd.exe	timeout.exe
PID 4944 wrote to memory of 384	4944	cmd.exe	windowsBook.exe
PID 4944 wrote to memory of 384	4944	cmd.exe	windowsBook.exe
PID 4944 wrote to memory of 384	4944	cmd.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe
PID 384 wrote to memory of 4392	384	windowsBook.exe	windowsBook.exe

C:\Users\Admin\AppData\Local\Temp\rUAE_LPO.com.exe
"C:\Users\Admin\AppData\Local\Temp\rUAE_LPO.com.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2376

C:\Users\Admin\AppData\Local\Temp\rUAE_LPO.com.exe
"C:\Users\Admin\AppData\Local\Temp\rUAE_LPO.com.exe"
2⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windowsBook" /tr '"C:\Users\Admin\AppData\Local\Temp\windowsBook.exe"' & exit
3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3472

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "windowsBook" /tr '"C:\Users\Admin\AppData\Local\Temp\windowsBook.exe"'
4⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:4884

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpE3B9.tmp.bat""
3⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4944

C:\Windows\SysWOW64\timeout.exe
timeout 3
4⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2948

C:\Users\Admin\AppData\Local\Temp\windowsBook.exe
"C:\Users\Admin\AppData\Local\Temp\windowsBook.exe"
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:384

C:\Users\Admin\AppData\Local\Temp\windowsBook.exe
"C:\Users\Admin\AppData\Local\Temp\windowsBook.exe"
5⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
PID:4392

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

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

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\rUAE_LPO.com.exe.log

Filesize
1KB

MD5
b7b9acb869ccc7f7ecb5304ec0384dee

SHA1
6a90751c95817903ee833d59a0abbef425a613b3

SHA256
8cb00a15cd942a1861c573d86d6fb430512c8e2f80f6349f48b16b8709ca7aa4

SHA512
7bec881ac5f59ac26f1be1e7e26d63f040c06369de10c1c246e531a4395d27c335d9acc647ecdedb48ed37bdc2dc405a4cfc11762e1c00659a49be259eaf8764

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpE3B9.tmp.bat

Filesize
158B

MD5
c3ad68dccd54d0ff01f980f434ae3387

SHA1
903f4398b072af4681bd5c5bed5492f873f540c1

SHA256
6d14f8700db80f2a0e78bd467c6853f661d1eaf302eafe83acdf7d14129eb3b9

SHA512
a661c9546ad3e18c9dd8ea0cebe34f23492b510aa42b2954681d6d3465b83b0099d7b9afe14cfa102743311ac348828a9fe92502a81412f3cef66dee3a1e4b75

Download Submit
C:\Users\Admin\AppData\Local\Temp\windowsBook.exe

Filesize
474KB

MD5
a305269db6286fc4dd1d73ac5d2bf208

SHA1
b8777b46a2b1ae40b8d6ff32cc79174e1e617983

SHA256
14995ab5376dccba2f4e91e4efcf09ab18d5645f262ee8cef70d4da8b9317699

SHA512
d05ea3ea97dfa9001292b3c56de44a6173405d1a7addc5cc08a34cb8b659cf0492dbf3048d59b9132b050187cd9c200cfb9752f3f37cc74cb9c9860afadaa10e

Download Submit
memory/2292-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2292-21-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2292-17-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2292-15-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2376-10-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2376-5-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2376-9-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/2376-0-0x0000000074D5E000-0x0000000074D5F000-memory.dmp

Filesize
4KB

Download
memory/2376-11-0x0000000006CC0000-0x0000000006D14000-memory.dmp

Filesize
336KB

Download
memory/2376-7-0x0000000005740000-0x00000000057DC000-memory.dmp

Filesize
624KB

Download
memory/2376-6-0x0000000005530000-0x000000000553A000-memory.dmp

Filesize
40KB

Download
memory/2376-8-0x0000000006A80000-0x0000000006A9C000-memory.dmp

Filesize
112KB

Download
memory/2376-16-0x0000000074D50000-0x0000000075500000-memory.dmp

Filesize
7.7MB

Download
memory/2376-4-0x0000000005EB0000-0x0000000006204000-memory.dmp

Filesize
3.3MB

Download
memory/2376-3-0x0000000005430000-0x00000000054C2000-memory.dmp

Filesize
584KB

Download
memory/2376-2-0x0000000005900000-0x0000000005EA4000-memory.dmp

Filesize
5.6MB

Download
memory/2376-1-0x0000000000B20000-0x0000000000B9C000-memory.dmp

Filesize
496KB

Download
memory/4392-32-0x0000000005C30000-0x0000000005C96000-memory.dmp

Filesize
408KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads