asyncrat | 8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689

General

Target

8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
Size

74KB
MD5

8426efde5119f38f7436dc6170635bae
SHA1

1f68a03059e2b27b1b4529f906fe7336a743b2ac
SHA256

8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689
SHA512

8c1a0338f9b53657866eb5b8f2b1e9a736877ee599a38ad6c956eec2062a4b62501b03893b93d9995c062f8c90fb7901ebdf4b3a4ef2a3944629cd47f9df7e57
SSDEEP

1536:Vu2/0TceH2or2NWvKnNzebe9p0fYtr1oJdoeZ5/EAH5tO:Vu2MTceH2oKEinNKbe9uY+SoltHTO

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

opakk.hopto.org:34397

Mutex

AkzHMC1tjq5U

Attributes

delay
3
install
true
install_file
WUDFHost.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
behavioral1/files/0x0009000000015cdd-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2928	WUDFHost.exe

Loads dropped DLL 1 IoCs

pid	Process
2116	cmd.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	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WUDFHost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2860	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
2880	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
Token: SeDebugPrivilege	2928	WUDFHost.exe
Token: SeDebugPrivilege	2928	WUDFHost.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2224 wrote to memory of 2392	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	32
PID 2224 wrote to memory of 2392	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	32
PID 2224 wrote to memory of 2392	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	32
PID 2224 wrote to memory of 2392	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	32
PID 2224 wrote to memory of 2116	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	34
PID 2224 wrote to memory of 2116	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	34
PID 2224 wrote to memory of 2116	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	34
PID 2224 wrote to memory of 2116	2224	8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe	34
PID 2392 wrote to memory of 2880	2392	cmd.exe	36
PID 2392 wrote to memory of 2880	2392	cmd.exe	36
PID 2392 wrote to memory of 2880	2392	cmd.exe	36
PID 2392 wrote to memory of 2880	2392	cmd.exe	36
PID 2116 wrote to memory of 2860	2116	cmd.exe	37
PID 2116 wrote to memory of 2860	2116	cmd.exe	37
PID 2116 wrote to memory of 2860	2116	cmd.exe	37
PID 2116 wrote to memory of 2860	2116	cmd.exe	37
PID 2116 wrote to memory of 2928	2116	cmd.exe	38
PID 2116 wrote to memory of 2928	2116	cmd.exe	38
PID 2116 wrote to memory of 2928	2116	cmd.exe	38
PID 2116 wrote to memory of 2928	2116	cmd.exe	38

C:\Users\Admin\AppData\Local\Temp\8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe
"C:\Users\Admin\AppData\Local\Temp\8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2224
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WUDFHost" /tr '"C:\Users\Admin\AppData\Roaming\WUDFHost.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2392
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "WUDFHost" /tr '"C:\Users\Admin\AppData\Roaming\WUDFHost.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2880
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCD3E.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2116
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2860
- - C:\Users\Admin\AppData\Roaming\WUDFHost.exe
    "C:\Users\Admin\AppData\Roaming\WUDFHost.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2928

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

System Information Discovery

1

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\Temp\tmpCD3E.tmp.bat

Filesize
152B

MD5
fd2362b97fb83aa4900c626384e908f6

SHA1
b34ce43826c6ce892d6deb07d755ff1f0b6d4860

SHA256
06f85924d4c817c69a9b587e5f3a82433d293739256188f9d83d6dfc6b6bd82d

SHA512
1497594d5b512c47b55e7503c682b9291835fe82adb5cea2161ee75f780c65b16c1493659aa118fc4267d740b2345b19df2704e76b4e31f0a8f277a90b62ccfe

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

Filesize
74KB

MD5
8426efde5119f38f7436dc6170635bae

SHA1
1f68a03059e2b27b1b4529f906fe7336a743b2ac

SHA256
8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689

SHA512
8c1a0338f9b53657866eb5b8f2b1e9a736877ee599a38ad6c956eec2062a4b62501b03893b93d9995c062f8c90fb7901ebdf4b3a4ef2a3944629cd47f9df7e57

Download Submit
memory/2224-0-0x00000000748CE000-0x00000000748CF000-memory.dmp

Filesize
4KB

Download
memory/2224-1-0x0000000000E40000-0x0000000000E58000-memory.dmp

Filesize
96KB

Download
memory/2224-2-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2224-12-0x00000000748C0000-0x0000000074FAE000-memory.dmp

Filesize
6.9MB

Download
memory/2928-16-0x0000000001210000-0x0000000001228000-memory.dmp

Filesize
96KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads