asyncrat | e7a044eb8b3033ba86c6635616654248143d9987124af92be95a18c08e40c836

Analysis

max time kernel
145s
max time network
193s
platform
windows7_x64
resource
win7v20210410
submitted
04/08/2021, 06:29

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General

Target
01D7741E.C70FA090Magpie.pdf.exe
Size 717KB
Sample210804-95evkhs8pe
SHA256 e7a044eb8b3033ba86c6635616654248143d9987124af92be95a18c08e40c836
MD5 060f8eaf2ca4ea2f595fb7b931c60305
SHA1 78d387005f7888b30f6758e42a48bc21d0ea6482
SHA512 b358c3eecc4dfe5b2aa91c6a3c171c17e2be1407c15cd7ff4016f64fb7e0c062d2021710cc2a6e4950dcec7fad8543dd1b3fc084320ea514384c4c8d34902c6f
MD5 SHA1 SHA512

Score

10^/10

asyncrat rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.7B

adikremix.ydns.eu:3030

Mutex

AsyncMutex_6SI8OkPnk

Attributes

aes_key
EVf3iXPqVeGNfM0v7OFtNSBkmxCEVuQk
anti_detection
false
autorun
true
bdos
false
delay
Default
host
adikremix.ydns.eu
hwid
5
install_file
install_folder
%AppData%
mutex
AsyncMutex_6SI8OkPnk
pastebin_config
null
port
3030
version
0.5.7B

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers.
rat asyncrat

Async RAT payload 5 IoCs

rat

resource	yara_rule
behavioral1/memory/1484-69-0x000000000040D08E-mapping.dmp	asyncrat
behavioral1/memory/1484-68-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/1484-70-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat
behavioral1/memory/972-92-0x000000000040D08E-mapping.dmp	asyncrat
behavioral1/memory/972-94-0x0000000000400000-0x0000000000412000-memory.dmp	asyncrat

Executes dropped EXE 2 IoCs

pid	Process
1084	configure.exe
972	configure.exe

Loads dropped DLL 1 IoCs

pid	Process
436	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2036 set thread context of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 1084 set thread context of 972	1084	configure.exe	41

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 3 IoCs

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

persistence

Scheduled Task

T1053

pid	Process
1692	schtasks.exe
720	schtasks.exe
1672	schtasks.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
1680	timeout.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
1484	01D7741E.C70FA090Magpie.pdf.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1484	01D7741E.C70FA090Magpie.pdf.exe
Token: SeDebugPrivilege	972	configure.exe

Suspicious use of WriteProcessMemory 46 IoCs

description	pid	Process	procid_target
PID 2036 wrote to memory of 720	2036	01D7741E.C70FA090Magpie.pdf.exe	29
PID 2036 wrote to memory of 720	2036	01D7741E.C70FA090Magpie.pdf.exe	29
PID 2036 wrote to memory of 720	2036	01D7741E.C70FA090Magpie.pdf.exe	29
PID 2036 wrote to memory of 720	2036	01D7741E.C70FA090Magpie.pdf.exe	29
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 2036 wrote to memory of 1484	2036	01D7741E.C70FA090Magpie.pdf.exe	31
PID 1484 wrote to memory of 1856	1484	01D7741E.C70FA090Magpie.pdf.exe	32
PID 1484 wrote to memory of 1856	1484	01D7741E.C70FA090Magpie.pdf.exe	32
PID 1484 wrote to memory of 1856	1484	01D7741E.C70FA090Magpie.pdf.exe	32
PID 1484 wrote to memory of 1856	1484	01D7741E.C70FA090Magpie.pdf.exe	32
PID 1484 wrote to memory of 436	1484	01D7741E.C70FA090Magpie.pdf.exe	34
PID 1484 wrote to memory of 436	1484	01D7741E.C70FA090Magpie.pdf.exe	34
PID 1484 wrote to memory of 436	1484	01D7741E.C70FA090Magpie.pdf.exe	34
PID 1484 wrote to memory of 436	1484	01D7741E.C70FA090Magpie.pdf.exe	34
PID 1856 wrote to memory of 1672	1856	cmd.exe	36
PID 1856 wrote to memory of 1672	1856	cmd.exe	36
PID 1856 wrote to memory of 1672	1856	cmd.exe	36
PID 1856 wrote to memory of 1672	1856	cmd.exe	36
PID 436 wrote to memory of 1680	436	cmd.exe	37
PID 436 wrote to memory of 1680	436	cmd.exe	37
PID 436 wrote to memory of 1680	436	cmd.exe	37
PID 436 wrote to memory of 1680	436	cmd.exe	37
PID 436 wrote to memory of 1084	436	cmd.exe	38
PID 436 wrote to memory of 1084	436	cmd.exe	38
PID 436 wrote to memory of 1084	436	cmd.exe	38
PID 436 wrote to memory of 1084	436	cmd.exe	38
PID 1084 wrote to memory of 1692	1084	configure.exe	39
PID 1084 wrote to memory of 1692	1084	configure.exe	39
PID 1084 wrote to memory of 1692	1084	configure.exe	39
PID 1084 wrote to memory of 1692	1084	configure.exe	39
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41
PID 1084 wrote to memory of 972	1084	configure.exe	41

C:\Users\Admin\AppData\Local\Temp\01D7741E.C70FA090Magpie.pdf.exe
"C:\Users\Admin\AppData\Local\Temp\01D7741E.C70FA090Magpie.pdf.exe"
1⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cXrFkq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp8AA3.tmp"
  2⤵
  - Creates scheduled task(s)
  PID:720
- C:\Users\Admin\AppData\Local\Temp\01D7741E.C70FA090Magpie.pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\01D7741E.C70FA090Magpie.pdf.exe"
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1484
- - C:\Windows\SysWOW64\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "configure" /tr '"C:\Users\Admin\AppData\Roaming\configure.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1856
  - - C:\Windows\SysWOW64\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "configure" /tr '"C:\Users\Admin\AppData\Roaming\configure.exe"'
      4⤵
      Creates scheduled task(s)
      PID:1672
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA802.tmp.bat""
    3⤵
    - Loads dropped DLL
    - Suspicious use of WriteProcessMemory
    PID:436
  - - C:\Windows\SysWOW64\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:1680
  - - C:\Users\Admin\AppData\Roaming\configure.exe
      "C:\Users\Admin\AppData\Roaming\configure.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious use of WriteProcessMemory
      PID:1084
    - - C:\Windows\SysWOW64\schtasks.exe
        
        "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\cXrFkq" /XML "C:\Users\Admin\AppData\Local\Temp\tmp4DF1.tmp"
        5⤵
        Creates scheduled task(s)
        
        PID:1692
    - - C:\Users\Admin\AppData\Roaming\configure.exe
        
        "C:\Users\Admin\AppData\Roaming\configure.exe"
        5⤵
        Executes dropped EXE
        Suspicious use of AdjustPrivilegeToken
        
        PID:972

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

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/972-97-0x0000000000660000-0x0000000000661000-memory.dmp

Download

memory/972-94-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1084-83-0x00000000013A0000-0x00000000013A1000-memory.dmp

Download

memory/1084-86-0x0000000004E70000-0x0000000004E71000-memory.dmp

Download

memory/1484-73-0x0000000004220000-0x0000000004221000-memory.dmp

Download

memory/1484-72-0x0000000076A81000-0x0000000076A83000-memory.dmp

Download

memory/1484-70-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/1484-68-0x0000000000400000-0x0000000000412000-memory.dmp

Download

memory/2036-60-0x0000000000C30000-0x0000000000C31000-memory.dmp

Download

memory/2036-65-0x0000000000580000-0x0000000000590000-memory.dmp

Download

memory/2036-64-0x0000000004FC0000-0x000000000503F000-memory.dmp

Download

memory/2036-63-0x0000000000490000-0x000000000049D000-memory.dmp

Download

memory/2036-62-0x0000000004B10000-0x0000000004B11000-memory.dmp

Download