asyncrat | 014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed

General

Target

014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe
Size

798KB
MD5

0997e0d8d2828ad4da27e830fd6562d3
SHA1

ddcb9cb2462b6f7b2a688a7696e49164a1d40d44
SHA256

014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed
SHA512

4e356cef6d1d50d1d7ab249177703d06f6a34c0b37405e00c47d850aeac782a6fd0562daed815df05659ff16b81698cd6a11a034dc3b599f019d778cf67191ef
SSDEEP

12288:AyveQB/fTHIGaPkKEYzURNAwbAgWtJZLGxDUeYnqaGsSGo0/O6nG:AuDXTIGaPhEYzUzA0ASxA/qnsO6nG

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/0x000900000001878c-7.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2356	Test1.exe
1724	WUDFHost.exe

Loads dropped DLL 1 IoCs

pid	Process
2616	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	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	Test1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
2632	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
2576	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2356	Test1.exe
2356	Test1.exe
2356	Test1.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2356	Test1.exe
Token: SeDebugPrivilege	1724	WUDFHost.exe
Token: SeDebugPrivilege	1724	WUDFHost.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1924 wrote to memory of 2356	1924	014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe	31
PID 1924 wrote to memory of 2356	1924	014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe	31
PID 1924 wrote to memory of 2356	1924	014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe	31
PID 1924 wrote to memory of 2356	1924	014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe	31
PID 2356 wrote to memory of 2864	2356	Test1.exe	34
PID 2356 wrote to memory of 2864	2356	Test1.exe	34
PID 2356 wrote to memory of 2864	2356	Test1.exe	34
PID 2356 wrote to memory of 2864	2356	Test1.exe	34
PID 2356 wrote to memory of 2616	2356	Test1.exe	36
PID 2356 wrote to memory of 2616	2356	Test1.exe	36
PID 2356 wrote to memory of 2616	2356	Test1.exe	36
PID 2356 wrote to memory of 2616	2356	Test1.exe	36
PID 2864 wrote to memory of 2576	2864	cmd.exe	38
PID 2864 wrote to memory of 2576	2864	cmd.exe	38
PID 2864 wrote to memory of 2576	2864	cmd.exe	38
PID 2864 wrote to memory of 2576	2864	cmd.exe	38
PID 2616 wrote to memory of 2632	2616	cmd.exe	39
PID 2616 wrote to memory of 2632	2616	cmd.exe	39
PID 2616 wrote to memory of 2632	2616	cmd.exe	39
PID 2616 wrote to memory of 2632	2616	cmd.exe	39
PID 2616 wrote to memory of 1724	2616	cmd.exe	40
PID 2616 wrote to memory of 1724	2616	cmd.exe	40
PID 2616 wrote to memory of 1724	2616	cmd.exe	40
PID 2616 wrote to memory of 1724	2616	cmd.exe	40

C:\Users\Admin\AppData\Local\Temp\014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe
"C:\Users\Admin\AppData\Local\Temp\014dba300f314de1c296005e39b4263d50ff032b7eebea2353b2285c90f891ed.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\RarSFX0\Test1.exe
  "C:\Users\Admin\AppData\Local\Temp\RarSFX0\Test1.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2356
- - 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
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2864
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "WUDFHost" /tr '"C:\Users\Admin\AppData\Roaming\WUDFHost.exe"'
      4⤵
      System Location Discovery: System Language Discovery
      Scheduled Task/Job: Scheduled Task
      PID:2576
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCAAF.tmp.bat""
    3⤵
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2616
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      System Location Discovery: System Language Discovery
      Delays execution with timeout.exe
      PID:2632
  - - C:\Users\Admin\AppData\Roaming\WUDFHost.exe
      "C:\Users\Admin\AppData\Roaming\WUDFHost.exe"
      4⤵
      Executes dropped EXE
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      PID:1724

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\RarSFX0\Test1.exe

Filesize
74KB

MD5
8426efde5119f38f7436dc6170635bae

SHA1
1f68a03059e2b27b1b4529f906fe7336a743b2ac

SHA256
8d30a30ff9b086ccb05f68a4297f73cdc252d2e847dfd3eee35e770c25d99689

SHA512
8c1a0338f9b53657866eb5b8f2b1e9a736877ee599a38ad6c956eec2062a4b62501b03893b93d9995c062f8c90fb7901ebdf4b3a4ef2a3944629cd47f9df7e57

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

Filesize
152B

MD5
1627574b604ee67cbc568623d05e69d2

SHA1
6a834021baaa333ec51f12967ec44970c9932197

SHA256
952daf1f4afe8b4fbd2618e960a7a5179b3d8c5fd99c6ffcacae0cb4bda3cec7

SHA512
9c8f784c86f39163874b7739fa0551fce6ebfc15702a4c79443089e29dee9a157e5e7229c27fe4c32b17d38d473bd5f51442f8cee6f8e010df4c96ae3516393c

Download Submit
memory/1724-31-0x00000000010C0000-0x00000000010D8000-memory.dmp

Filesize
96KB

Download
memory/1924-4-0x0000000003230000-0x0000000003240000-memory.dmp

Filesize
64KB

Download
memory/2356-15-0x00000000742AE000-0x00000000742AF000-memory.dmp

Filesize
4KB

Download
memory/2356-16-0x0000000001090000-0x00000000010A8000-memory.dmp

Filesize
96KB

Download
memory/2356-17-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download
memory/2356-27-0x00000000742A0000-0x000000007498E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads