asyncrat | b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c

General

Target

1cfd4361277b82972da1c2bacadc270a.exe
Size

48KB
MD5

1cfd4361277b82972da1c2bacadc270a
SHA1

1fcb2293499713ff9948134ceb30be4f12d101fc
SHA256

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c
SHA512

6d66fdf94993c8e48d37055a8617b2fa6c93b077e1c1ee8dfe8ae1d6cd131186af5378d28d3369463202e65984cdd0a63960838fa45a72bf8ea04071b3f1c0a0
SSDEEP

1536:Auq9JTPNY72AUZ1oRjJBabg7UdROYgduxMZh6dAv:AuqnTPNo2A41oRjJBabg7UdQYS9T6Gv

Score

10^/10

asyncrat albion discovery rat spyware stealer

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Albion

C2

198.154.99.162:6606

198.154.99.162:6607

198.154.99.162:6608

198.154.99.162:6609

198.154.99.162:6610

198.154.99.162:6611

198.154.99.162:6612

198.154.99.162:6613

198.154.99.162:6614

198.154.99.162:6615

198.154.99.162:6616

198.154.99.162:6617

198.154.99.162:6618

198.154.99.162:6619

198.154.99.162:6620

198.154.99.162:6621

198.154.99.162:6622

198.154.99.162:6623

198.154.99.162:6624

198.154.99.162:6625

Mutex

7XUA7jABSTCf

Attributes

delay
3
install
true
install_file
RealtekAudio.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

Processes:

resource	yara_rule
\Users\Admin\AppData\Roaming\RealtekAudio.exe	family_asyncrat

Executes dropped EXE 1 IoCs

Processes:

RealtekAudio.exe

pid process

2076 RealtekAudio.exe
Loads dropped DLL 1 IoCs

Processes:

cmd.exe

pid process

2496 cmd.exe
Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2076	RealtekAudio.exe

pid	process
2496	cmd.exe

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

Processes:

1cfd4361277b82972da1c2bacadc270a.execmd.execmd.exeschtasks.exetimeout.exeRealtekAudio.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1cfd4361277b82972da1c2bacadc270a.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	RealtekAudio.exe

Delays execution with timeout.exe 1 IoCs
evasion

Processes:

timeout.exe

pid process

2792 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

2756 schtasks.exe
Suspicious behavior: EnumeratesProcesses 3 IoCs

Processes:

1cfd4361277b82972da1c2bacadc270a.exe

pid process

2044 1cfd4361277b82972da1c2bacadc270a.exe
2044 1cfd4361277b82972da1c2bacadc270a.exe
2044 1cfd4361277b82972da1c2bacadc270a.exe

pid	process
2792	timeout.exe

pid	process
2756	schtasks.exe

pid	process
2044	1cfd4361277b82972da1c2bacadc270a.exe
2044	1cfd4361277b82972da1c2bacadc270a.exe
2044	1cfd4361277b82972da1c2bacadc270a.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

1cfd4361277b82972da1c2bacadc270a.exeRealtekAudio.exe

description	pid	process
Token: SeDebugPrivilege	2044	1cfd4361277b82972da1c2bacadc270a.exe
Token: SeDebugPrivilege	2076	RealtekAudio.exe
Token: SeDebugPrivilege	2076	RealtekAudio.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

1cfd4361277b82972da1c2bacadc270a.execmd.execmd.exe

description	pid	process	target process
PID 2044 wrote to memory of 2016	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2016	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2016	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2016	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2496	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2496	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2496	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2044 wrote to memory of 2496	2044	1cfd4361277b82972da1c2bacadc270a.exe	cmd.exe
PID 2016 wrote to memory of 2756	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 2756	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 2756	2016	cmd.exe	schtasks.exe
PID 2016 wrote to memory of 2756	2016	cmd.exe	schtasks.exe
PID 2496 wrote to memory of 2792	2496	cmd.exe	timeout.exe
PID 2496 wrote to memory of 2792	2496	cmd.exe	timeout.exe
PID 2496 wrote to memory of 2792	2496	cmd.exe	timeout.exe
PID 2496 wrote to memory of 2792	2496	cmd.exe	timeout.exe
PID 2496 wrote to memory of 2076	2496	cmd.exe	RealtekAudio.exe
PID 2496 wrote to memory of 2076	2496	cmd.exe	RealtekAudio.exe
PID 2496 wrote to memory of 2076	2496	cmd.exe	RealtekAudio.exe
PID 2496 wrote to memory of 2076	2496	cmd.exe	RealtekAudio.exe

C:\Users\Admin\AppData\Local\Temp\1cfd4361277b82972da1c2bacadc270a.exe
"C:\Users\Admin\AppData\Local\Temp\1cfd4361277b82972da1c2bacadc270a.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2044

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "RealtekAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekAudio.exe"' & exit
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2016

C:\Windows\SysWOW64\schtasks.exe
schtasks /create /f /sc onlogon /rl highest /tn "RealtekAudio" /tr '"C:\Users\Admin\AppData\Roaming\RealtekAudio.exe"'
3⤵
- System Location Discovery: System Language Discovery
- Scheduled Task/Job: Scheduled Task
PID:2756

C:\Windows\SysWOW64\cmd.exe
cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDB51.tmp.bat""
2⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2496

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:2792

C:\Users\Admin\AppData\Roaming\RealtekAudio.exe
"C:\Users\Admin\AppData\Roaming\RealtekAudio.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

Credentials from Password Stores

1

T1555

Credentials from Web Browsers

1

T1555.003

Unsecured Credentials

1

T1552

Credentials In Files

1

T1552.001

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabFE7D.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar101C.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDB51.tmp.bat

Filesize
156B

MD5
a40638ed7c698c6a2943fcc93aa9685c

SHA1
d40fb58078671a23cb8574e83229ed2cad791ef5

SHA256
9508e45608f103a172377e8434240e724969e81fbbd4e35303213e63f02b2b5a

SHA512
665d8a32402e4dc76ff03dd56b5b95aa69fc44e090036d186b945fd299cffeb6349fb0ab47f0fffce85a1ede5526f0e486efd3485608da34c2502d8bc0628dbe

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

Filesize
48KB

MD5
1cfd4361277b82972da1c2bacadc270a

SHA1
1fcb2293499713ff9948134ceb30be4f12d101fc

SHA256
b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c

SHA512
6d66fdf94993c8e48d37055a8617b2fa6c93b077e1c1ee8dfe8ae1d6cd131186af5378d28d3369463202e65984cdd0a63960838fa45a72bf8ea04071b3f1c0a0

Download Submit
memory/2044-0-0x00000000749FE000-0x00000000749FF000-memory.dmp

Filesize
4KB

Download
memory/2044-1-0x0000000000310000-0x0000000000322000-memory.dmp

Filesize
72KB

Download
memory/2044-2-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2044-11-0x00000000749F0000-0x00000000750DE000-memory.dmp

Filesize
6.9MB

Download
memory/2076-16-0x0000000000380000-0x0000000000392000-memory.dmp

Filesize
72KB

Download
memory/2076-33-0x0000000005EB0000-0x0000000005F4C000-memory.dmp

Filesize
624KB

Download
memory/2076-52-0x0000000001E80000-0x0000000001EC0000-memory.dmp

Filesize
256KB

Download
memory/2076-53-0x0000000001E30000-0x0000000001E3A000-memory.dmp

Filesize
40KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads