asyncrat | 5fb28decebbb259fc522821d4c65a134a98158f7e5b06f1ef3466388e2e657fc

General

Target

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.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
C:\Users\Admin\AppData\Roaming\RealtekAudio.exe	family_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:

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe

Executes dropped EXE 1 IoCs

Processes:

RealtekAudio.exe

pid process

5088 RealtekAudio.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
5088	RealtekAudio.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:

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.execmd.execmd.exeschtasks.exetimeout.exeRealtekAudio.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.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

1940 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

4104 schtasks.exe

pid	process
1940	timeout.exe

pid	process
4104	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

Processes:

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe

pid	process
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exeRealtekAudio.exe

description	pid	process
Token: SeDebugPrivilege	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
Token: SeDebugPrivilege	5088	RealtekAudio.exe
Token: SeDebugPrivilege	5088	RealtekAudio.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.execmd.execmd.exe

description	pid	process	target process
PID 1592 wrote to memory of 4152	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 1592 wrote to memory of 4152	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 1592 wrote to memory of 4152	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 1592 wrote to memory of 2404	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 1592 wrote to memory of 2404	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 1592 wrote to memory of 2404	1592	b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe	cmd.exe
PID 4152 wrote to memory of 4104	4152	cmd.exe	schtasks.exe
PID 4152 wrote to memory of 4104	4152	cmd.exe	schtasks.exe
PID 4152 wrote to memory of 4104	4152	cmd.exe	schtasks.exe
PID 2404 wrote to memory of 1940	2404	cmd.exe	timeout.exe
PID 2404 wrote to memory of 1940	2404	cmd.exe	timeout.exe
PID 2404 wrote to memory of 1940	2404	cmd.exe	timeout.exe
PID 2404 wrote to memory of 5088	2404	cmd.exe	RealtekAudio.exe
PID 2404 wrote to memory of 5088	2404	cmd.exe	RealtekAudio.exe
PID 2404 wrote to memory of 5088	2404	cmd.exe	RealtekAudio.exe

C:\Users\Admin\AppData\Local\Temp\b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe
"C:\Users\Admin\AppData\Local\Temp\b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1592

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:4152

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:4104

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpABC1.tmp.bat""
2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2404

C:\Windows\SysWOW64\timeout.exe
timeout 3
3⤵
- System Location Discovery: System Language Discovery
- Delays execution with timeout.exe
PID:1940

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:5088

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

Query Registry

1

T1012

System Information Discovery

2

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\tmpABC1.tmp.bat

Filesize
156B

MD5
6f9ceb733ada745f49761c9a5821e4ca

SHA1
cd3d989adc91d929be5ad6b83805afea6c8fa4a5

SHA256
cd7e43b09d6f6e844343f00ea988f56c3adfb5b67c4b4650670b21ba6f5640f2

SHA512
3f391849daabafb17c8acdcd7a450534dd532f3aafce95ff35ff976b4b16110fd889f1d8a93c7ba7b483a6b7fd07d5ce14e852449827f61194ad37db4cd51534

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

Filesize
48KB

MD5
1cfd4361277b82972da1c2bacadc270a

SHA1
1fcb2293499713ff9948134ceb30be4f12d101fc

SHA256
b27e4c8287ff688b8da4045756c22d08ccc0d100970cda2cf4bff09880df496c

SHA512
6d66fdf94993c8e48d37055a8617b2fa6c93b077e1c1ee8dfe8ae1d6cd131186af5378d28d3369463202e65984cdd0a63960838fa45a72bf8ea04071b3f1c0a0

Download Submit
memory/1592-0-0x00000000747EE000-0x00000000747EF000-memory.dmp

Filesize
4KB

Download
memory/1592-1-0x0000000000B00000-0x0000000000B12000-memory.dmp

Filesize
72KB

Download
memory/1592-2-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/1592-3-0x0000000005490000-0x00000000054F6000-memory.dmp

Filesize
408KB

Download
memory/1592-4-0x0000000005950000-0x00000000059EC000-memory.dmp

Filesize
624KB

Download
memory/1592-9-0x00000000747E0000-0x0000000074F90000-memory.dmp

Filesize
7.7MB

Download
memory/5088-14-0x0000000074750000-0x0000000074F00000-memory.dmp

Filesize
7.7MB

Download
memory/5088-17-0x0000000005D40000-0x00000000062E4000-memory.dmp

Filesize
5.6MB

Download
memory/5088-18-0x0000000006570000-0x00000000065E6000-memory.dmp

Filesize
472KB

Download
memory/5088-19-0x00000000065F0000-0x000000000668C000-memory.dmp

Filesize
624KB

Download
memory/5088-20-0x0000000006550000-0x000000000656E000-memory.dmp

Filesize
120KB

Download
memory/5088-21-0x0000000074750000-0x0000000074F00000-memory.dmp

Filesize
7.7MB

Download
memory/5088-23-0x00000000066E0000-0x00000000066EA000-memory.dmp

Filesize
40KB

Download
memory/5088-22-0x00000000066A0000-0x00000000066E0000-memory.dmp

Filesize
256KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads