asyncrat | 8505493233081640694d465e23211480ff62290cb0c637953b042c74afac75d0

General

Target

goodz.exe
Size

48KB
MD5

e9f58adf1fbecde95e318f207ccc7e71
SHA1

1a9071a83cd2d9a5ddfd598f9342452056d89033
SHA256

8505493233081640694d465e23211480ff62290cb0c637953b042c74afac75d0
SHA512

ffc953b9b56e01b09d447e559856b477639ea8fc8ca4ae1658801494aaaa211b3f34f4f8f7fdff63c6654d37671700560e2fe7fcd91f0e591a2bfd24c29614ef
SSDEEP

768:uuIdtT/w70kWUquzumo2qz+04Q3bqP+PI91UWrsd0bHs6wgbM7Vf3wmyxjlalBDL:uuIdtT/kW2j+GPH91UWrs6bHs6vMhVgc

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

127.0.0.1:6606

127.0.0.1:7707

127.0.0.1:8808

216.189.134.79:6606

216.189.134.79:7707

216.189.134.79:8808

Mutex

fcg7msn363CZ

Attributes

delay
3
install
true
install_file
goodz.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

resource	yara_rule
behavioral1/files/0x000c0000000233df-12.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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	goodz.exe

Executes dropped EXE 1 IoCs

pid	Process
1604	goodz.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	goodz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	goodz.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
4624	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
2052	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe
2216	goodz.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2216	goodz.exe
Token: SeDebugPrivilege	1604	goodz.exe
Token: SeDebugPrivilege	1604	goodz.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2216 wrote to memory of 4996	2216	goodz.exe	90
PID 2216 wrote to memory of 4996	2216	goodz.exe	90
PID 2216 wrote to memory of 4996	2216	goodz.exe	90
PID 2216 wrote to memory of 4896	2216	goodz.exe	92
PID 2216 wrote to memory of 4896	2216	goodz.exe	92
PID 2216 wrote to memory of 4896	2216	goodz.exe	92
PID 4896 wrote to memory of 4624	4896	cmd.exe	94
PID 4896 wrote to memory of 4624	4896	cmd.exe	94
PID 4896 wrote to memory of 4624	4896	cmd.exe	94
PID 4996 wrote to memory of 2052	4996	cmd.exe	95
PID 4996 wrote to memory of 2052	4996	cmd.exe	95
PID 4996 wrote to memory of 2052	4996	cmd.exe	95
PID 4896 wrote to memory of 1604	4896	cmd.exe	96
PID 4896 wrote to memory of 1604	4896	cmd.exe	96
PID 4896 wrote to memory of 1604	4896	cmd.exe	96

C:\Users\Admin\AppData\Local\Temp\goodz.exe
"C:\Users\Admin\AppData\Local\Temp\goodz.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2216
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "goodz" /tr '"C:\Users\Admin\AppData\Roaming\goodz.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4996
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "goodz" /tr '"C:\Users\Admin\AppData\Roaming\goodz.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2052
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpDE98.tmp.bat""
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4896
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:4624
- - C:\Users\Admin\AppData\Roaming\goodz.exe
    "C:\Users\Admin\AppData\Roaming\goodz.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:1604

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\goodz.exe.log

Filesize
614B

MD5
54920f388010333559bdff225040761d

SHA1
040972bf1fc83014f10c45832322c094f883ce30

SHA256
9ed5449a36700939987209c7a2974b9cc669b8b22c7c4e7936f35dda0a4dc359

SHA512
e17aa5d1328b3bfd3754d15b3c2eded98653d90c7b326f941522e0b3bd6f557880246a6bc69047facb42eb97d2e0ed6c46148dfe95a98669fc4e1d07c21a285c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDE98.tmp.bat

Filesize
149B

MD5
84fff955a125eced9755d7bff7762bfa

SHA1
b729763ca3cfeebef0c4d6cec6c8d3cc2dbf7e88

SHA256
32219930faea6a01615dd80157e582d2b720af11f91166d4cbffa2b81219a2a7

SHA512
7e1829eb1c2cc5628fdaa12e2a6475d010a33ab24cffca98472f3f26630f2014a05187635e79b36f6aa4b209bcee9a69295676392ebcdb438d72b47ab1fc5a8a

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

Filesize
48KB

MD5
e9f58adf1fbecde95e318f207ccc7e71

SHA1
1a9071a83cd2d9a5ddfd598f9342452056d89033

SHA256
8505493233081640694d465e23211480ff62290cb0c637953b042c74afac75d0

SHA512
ffc953b9b56e01b09d447e559856b477639ea8fc8ca4ae1658801494aaaa211b3f34f4f8f7fdff63c6654d37671700560e2fe7fcd91f0e591a2bfd24c29614ef

Download Submit
memory/1604-15-0x0000000074AB0000-0x0000000075260000-memory.dmp

Filesize
7.7MB

Download
memory/2216-0-0x0000000074B5E000-0x0000000074B5F000-memory.dmp

Filesize
4KB

Download
memory/2216-1-0x00000000003B0000-0x00000000003C2000-memory.dmp

Filesize
72KB

Download
memory/2216-2-0x0000000074B50000-0x0000000075300000-memory.dmp

Filesize
7.7MB

Download
memory/2216-3-0x0000000004C40000-0x0000000004CA6000-memory.dmp

Filesize
408KB

Download
memory/2216-4-0x00000000050D0000-0x000000000516C000-memory.dmp

Filesize
624KB

Download
memory/2216-9-0x0000000074B50000-0x0000000075300000-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