asyncrat | c759cde09cf057c2430ceb74bd7f15427d2ad27f0b77dcc8630c8a148486cf27

General

Target

Discord.exe
Size

45KB
MD5

05b54deb0e3e6a3fb9155a14642b50ba
SHA1

77bf6744502a5946861baf104c1cf4babc171b9c
SHA256

c759cde09cf057c2430ceb74bd7f15427d2ad27f0b77dcc8630c8a148486cf27
SHA512

3668e77850acfb0c42f1d15de08fcd737f0c6d7087f25f6404b1f378aea94ca34ab0d85f2bea1c8a9d11692a039d0fa42aeec4876bb802ae2c192608e5bc5a9b
SSDEEP

768:6uKQ9TH4EjZWUR/ejmo2qrYKjPGaG6PIyzjbFgX3i6cpxs298YBDZTx:6uKQ9THfe2BKTkDy3bCXSpF9LdTx

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

18.ip.gl.ply.gg:6606

18.ip.gl.ply.gg:7707

18.ip.gl.ply.gg:8808

18.ip.gl.ply.gg:9028

Mutex

lmk8StbxTzvz

Attributes

delay
3
install
true
install_file
Discord.exe
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

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral2/files/0x000200000001e762-11.dat	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	Discord.exe

Executes dropped EXE 1 IoCs

pid	Process
4896	Discord.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 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Discord.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Discord.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3984	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

pid	Process
4416	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe
2520	Discord.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2520	Discord.exe
Token: SeDebugPrivilege	4896	Discord.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 4780	2520	Discord.exe	84
PID 2520 wrote to memory of 4780	2520	Discord.exe	84
PID 2520 wrote to memory of 4780	2520	Discord.exe	84
PID 2520 wrote to memory of 2368	2520	Discord.exe	86
PID 2520 wrote to memory of 2368	2520	Discord.exe	86
PID 2520 wrote to memory of 2368	2520	Discord.exe	86
PID 2368 wrote to memory of 3984	2368	cmd.exe	88
PID 2368 wrote to memory of 3984	2368	cmd.exe	88
PID 2368 wrote to memory of 3984	2368	cmd.exe	88
PID 4780 wrote to memory of 4416	4780	cmd.exe	89
PID 4780 wrote to memory of 4416	4780	cmd.exe	89
PID 4780 wrote to memory of 4416	4780	cmd.exe	89
PID 2368 wrote to memory of 4896	2368	cmd.exe	92
PID 2368 wrote to memory of 4896	2368	cmd.exe	92
PID 2368 wrote to memory of 4896	2368	cmd.exe	92

C:\Users\Admin\AppData\Local\Temp\Discord.exe
"C:\Users\Admin\AppData\Local\Temp\Discord.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4780
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Discord" /tr '"C:\Users\Admin\AppData\Roaming\Discord.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:4416
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDCD3.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2368
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:3984
- - C:\Users\Admin\AppData\Roaming\Discord.exe
    "C:\Users\Admin\AppData\Roaming\Discord.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:4896

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\Discord.exe.log

Filesize
522B

MD5
acc9090417037dfa2a55b46ed86e32b8

SHA1
53fa6fb25fb3e88c24d2027aca6ae492b2800a4d

SHA256
2412679218bb0a7d05ceee32869bbb223619bde9966c4c460a68304a3367724b

SHA512
d51f7085ec147c708f446b9fb6923cd2fb64596d354ed929e125b30ace57c8cb3217589447a36960e5d3aea87a4e48aaa82c7509eced6d6c2cecd71fcfe3697b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDCD3.tmp.bat

Filesize
151B

MD5
3754ba50b0dacaebfef3ab4fad287a86

SHA1
5bc1b0415377826eb8c3bfda118b458a09886c8b

SHA256
bae6a27aa1f8d7dc8ccdf2c97dc22c482eb35a6f445c896801701d8ffc6eff97

SHA512
80371a4010bfd54c3bae63c86b05b4c9e439f6d88f6ae0628f392ec5bb32939e5440b0d739ce2928c32c17f168ecdd2efeaf56b2fdce82e53fabb5db301ec77f

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

Filesize
45KB

MD5
05b54deb0e3e6a3fb9155a14642b50ba

SHA1
77bf6744502a5946861baf104c1cf4babc171b9c

SHA256
c759cde09cf057c2430ceb74bd7f15427d2ad27f0b77dcc8630c8a148486cf27

SHA512
3668e77850acfb0c42f1d15de08fcd737f0c6d7087f25f6404b1f378aea94ca34ab0d85f2bea1c8a9d11692a039d0fa42aeec4876bb802ae2c192608e5bc5a9b

Download Submit
memory/2520-0-0x000000007497E000-0x000000007497F000-memory.dmp

Filesize
4KB

Download
memory/2520-1-0x0000000000320000-0x0000000000332000-memory.dmp

Filesize
72KB

Download
memory/2520-2-0x0000000074970000-0x0000000075120000-memory.dmp

Filesize
7.7MB

Download
memory/2520-3-0x0000000004D50000-0x0000000004DEC000-memory.dmp

Filesize
624KB

Download
memory/2520-8-0x0000000074970000-0x0000000075120000-memory.dmp

Filesize
7.7MB

Download
memory/4896-14-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download
memory/4896-15-0x00000000748C0000-0x0000000075070000-memory.dmp

Filesize
7.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads