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/0x0008000000023c9b-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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	Discord.exe

Executes dropped EXE 1 IoCs

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

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4696	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
3788	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe
1960	Discord.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1960	Discord.exe
Token: SeDebugPrivilege	408	Discord.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1960 wrote to memory of 2364	1960	Discord.exe	82
PID 1960 wrote to memory of 2364	1960	Discord.exe	82
PID 1960 wrote to memory of 2364	1960	Discord.exe	82
PID 1960 wrote to memory of 1804	1960	Discord.exe	84
PID 1960 wrote to memory of 1804	1960	Discord.exe	84
PID 1960 wrote to memory of 1804	1960	Discord.exe	84
PID 1804 wrote to memory of 4696	1804	cmd.exe	86
PID 1804 wrote to memory of 4696	1804	cmd.exe	86
PID 1804 wrote to memory of 4696	1804	cmd.exe	86
PID 2364 wrote to memory of 3788	2364	cmd.exe	87
PID 2364 wrote to memory of 3788	2364	cmd.exe	87
PID 2364 wrote to memory of 3788	2364	cmd.exe	87
PID 1804 wrote to memory of 408	1804	cmd.exe	90
PID 1804 wrote to memory of 408	1804	cmd.exe	90
PID 1804 wrote to memory of 408	1804	cmd.exe	90

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:1960
- 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:2364
- - 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:3788
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpCEE9.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1804
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4696
- - 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:408

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\tmpCEE9.tmp.bat

Filesize
151B

MD5
413b5d9c5f2992203c68073372a1624a

SHA1
bceef66c28dde63eb02ddcb3f392fcfa87a4cce8

SHA256
4c19871356a522115cd5a8955ed2880a2ac8fd5aaf50fc311b1f53b6f948d97c

SHA512
381d3bfa2fe9f0cd08be6f527671f142bd2056f8a3295c575f7ea9337bb97ac07dd4e4c29a0e15ebc1ed72d39be283b23f5ac8226d1cd53e4af99d7dbe10a07a

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

Filesize
45KB

MD5
05b54deb0e3e6a3fb9155a14642b50ba

SHA1
77bf6744502a5946861baf104c1cf4babc171b9c

SHA256
c759cde09cf057c2430ceb74bd7f15427d2ad27f0b77dcc8630c8a148486cf27

SHA512
3668e77850acfb0c42f1d15de08fcd737f0c6d7087f25f6404b1f378aea94ca34ab0d85f2bea1c8a9d11692a039d0fa42aeec4876bb802ae2c192608e5bc5a9b

Download Submit
memory/408-14-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/408-15-0x0000000075140000-0x00000000758F0000-memory.dmp

Filesize
7.7MB

Download
memory/1960-0-0x00000000751FE000-0x00000000751FF000-memory.dmp

Filesize
4KB

Download
memory/1960-1-0x0000000000F20000-0x0000000000F32000-memory.dmp

Filesize
72KB

Download
memory/1960-2-0x00000000751F0000-0x00000000759A0000-memory.dmp

Filesize
7.7MB

Download
memory/1960-3-0x00000000058E0000-0x000000000597C000-memory.dmp

Filesize
624KB

Download
memory/1960-8-0x00000000751F0000-0x00000000759A0000-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