asyncrat | f85fb30beeceb9e2721aa12deee155bb604c0a364f926da18644af7e6e5c7a25

Analysis

max time kernel
121s
max time network
156s
platform
windows10_x64
resource
win10-en-20211208
submitted
28/01/2022, 00:51

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
InvPROV-NTI-EXX-DECK-22-008.exe
Size 292KB
Sample220128-a7hmxsdccj
SHA256 f85fb30beeceb9e2721aa12deee155bb604c0a364f926da18644af7e6e5c7a25
MD5 1d142d1d500fdfbe3b7ef592a9a8895a
SHA1 e345c0434b4a276fec0855b8536723cd01466f9c
SHA512 33df0626b5669d5dbfde5916c37d66fbfac82ce6faed53febef0c2336bfb16a59214e37080ffc10a01bff8a9463a510b874ca1a627699a8526d3d719009aa52a
MD5 SHA1 SHA512

Score

10^/10

asyncrat rat spyware stealer suricata

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata: ET MALWARE Observed Malicious SSL Cert (AsyncRAT Server)
suricata

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral2/memory/1160-122-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral2/memory/3396-143-0x0000000007640000-0x0000000007662000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1856	MicrosoftDoc.exe
3396	MicrosoftDoc.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 3788 set thread context of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 1856 set thread context of 3396	1856	MicrosoftDoc.exe	76

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1940	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
3112	timeout.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe
1160	InvPROV-NTI-EXX-DECK-22-008.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1160	InvPROV-NTI-EXX-DECK-22-008.exe
Token: SeDebugPrivilege	3396	MicrosoftDoc.exe

Suspicious use of WriteProcessMemory 31 IoCs

description	pid	Process	procid_target
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 3788 wrote to memory of 1160	3788	InvPROV-NTI-EXX-DECK-22-008.exe	68
PID 1160 wrote to memory of 1732	1160	InvPROV-NTI-EXX-DECK-22-008.exe	69
PID 1160 wrote to memory of 1732	1160	InvPROV-NTI-EXX-DECK-22-008.exe	69
PID 1160 wrote to memory of 1732	1160	InvPROV-NTI-EXX-DECK-22-008.exe	69
PID 1160 wrote to memory of 2788	1160	InvPROV-NTI-EXX-DECK-22-008.exe	71
PID 1160 wrote to memory of 2788	1160	InvPROV-NTI-EXX-DECK-22-008.exe	71
PID 1160 wrote to memory of 2788	1160	InvPROV-NTI-EXX-DECK-22-008.exe	71
PID 2788 wrote to memory of 3112	2788	cmd.exe	73
PID 2788 wrote to memory of 3112	2788	cmd.exe	73
PID 2788 wrote to memory of 3112	2788	cmd.exe	73
PID 1732 wrote to memory of 1940	1732	cmd.exe	74
PID 1732 wrote to memory of 1940	1732	cmd.exe	74
PID 1732 wrote to memory of 1940	1732	cmd.exe	74
PID 2788 wrote to memory of 1856	2788	cmd.exe	75
PID 2788 wrote to memory of 1856	2788	cmd.exe	75
PID 2788 wrote to memory of 1856	2788	cmd.exe	75
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76
PID 1856 wrote to memory of 3396	1856	MicrosoftDoc.exe	76

C:\Users\Admin\AppData\Local\Temp\InvPROV-NTI-EXX-DECK-22-008.exe
"C:\Users\Admin\AppData\Local\Temp\InvPROV-NTI-EXX-DECK-22-008.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3788
- C:\Users\Admin\AppData\Local\Temp\InvPROV-NTI-EXX-DECK-22-008.exe
  "C:\Users\Admin\AppData\Local\Temp\InvPROV-NTI-EXX-DECK-22-008.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1160
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftDoc" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1732
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftDoc" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe"'
      4⤵
      Creates scheduled task(s)
      PID:1940
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp1365.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2788
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:3112
  - - C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe
      "C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:1856
    - - C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe
        
        "C:\Users\Admin\AppData\Roaming\MicrosoftDoc.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:3396

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

T1053

Persistence

Scheduled Task

T1053

Privilege Escalation

Scheduled Task

T1053

Defense Evasion

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

memory/1160-122-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1160-124-0x0000000002A90000-0x0000000002A91000-memory.dmp

Download

memory/1856-128-0x0000000005210000-0x0000000005226000-memory.dmp

Download

memory/1856-132-0x0000000005240000-0x000000000529F000-memory.dmp

Download

memory/3396-138-0x0000000007000000-0x0000000007350000-memory.dmp

Download

memory/3396-139-0x0000000006F70000-0x0000000006F7A000-memory.dmp

Download

memory/3396-143-0x0000000007640000-0x0000000007662000-memory.dmp

Download

memory/3396-142-0x00000000075C0000-0x000000000760B000-memory.dmp

Download

memory/3396-141-0x0000000007560000-0x00000000075C0000-memory.dmp

Download

memory/3396-140-0x00000000073C0000-0x0000000007450000-memory.dmp

Download

memory/3396-137-0x0000000006F00000-0x0000000006F1E000-memory.dmp

Download

memory/3396-133-0x00000000054E0000-0x00000000054E1000-memory.dmp

Download

memory/3396-134-0x0000000005B30000-0x0000000005B96000-memory.dmp

Download

memory/3396-135-0x0000000006E00000-0x0000000006E76000-memory.dmp

Download

memory/3396-136-0x0000000006D80000-0x0000000006DFE000-memory.dmp

Download

memory/3788-121-0x0000000002DB0000-0x0000000002DC6000-memory.dmp

Download

memory/3788-115-0x0000000000A20000-0x0000000000A70000-memory.dmp

Download

memory/3788-119-0x0000000005440000-0x00000000054DC000-memory.dmp

Download

memory/3788-116-0x0000000005800000-0x0000000005CFE000-memory.dmp

Download

memory/3788-117-0x00000000053A0000-0x0000000005432000-memory.dmp

Download

memory/3788-120-0x0000000005300000-0x00000000057FE000-memory.dmp

Download

memory/3788-118-0x0000000002F70000-0x0000000002FA0000-memory.dmp

Download