asyncrat | 56f5b03c3fcdb4f48a597fa123250a9b2dde9ccfecdabfc0c05e64a0df232485

General

Target

6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe
Size

269KB
MD5

6040d6caf2c0aaee9c3d5ee3fbae9a60
SHA1

f16980309317783c10cc367fd8f9b5cde116a4d7
SHA256

56f5b03c3fcdb4f48a597fa123250a9b2dde9ccfecdabfc0c05e64a0df232485
SHA512

56fa9d1215a905163de6a8acf90d3dacc5bb4c4f00f546812245c3cacfcea08893aa94413d5204d29a0cb2620894fab038ae2089e1c464b14ad443bf6dda7c58
SSDEEP

3072:nuIuTYUN2l22IY25ZQbeetVpprECIUy+/z20q3/dLpdB4Ulp/qNMYbVVOTKBY/BR:nuIOAlO5ZQbnEu60qBjBfFOi/B6Cs9i

Score

10^/10

asyncrat default discovery rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.8

Botnet

Default

C2

pablitoiprat.ddns.net:8080

Mutex

1LJGfY2aykXA

Attributes

delay
3
install
true
install_file
Microsoft-(R)-Analystics-Windows.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/0x0008000000012101-13.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2796	Microsoft-(R)-Analystics-Windows.exe

Loads dropped DLL 1 IoCs

pid	Process
268	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	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe
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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	timeout.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Microsoft-(R)-Analystics-Windows.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2724	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
2304	schtasks.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe
Token: SeDebugPrivilege	2796	Microsoft-(R)-Analystics-Windows.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2352 wrote to memory of 2540	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	29
PID 2352 wrote to memory of 2540	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	29
PID 2352 wrote to memory of 2540	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	29
PID 2352 wrote to memory of 2540	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	29
PID 2352 wrote to memory of 268	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	31
PID 2352 wrote to memory of 268	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	31
PID 2352 wrote to memory of 268	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	31
PID 2352 wrote to memory of 268	2352	6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe	31
PID 2540 wrote to memory of 2304	2540	cmd.exe	33
PID 2540 wrote to memory of 2304	2540	cmd.exe	33
PID 2540 wrote to memory of 2304	2540	cmd.exe	33
PID 2540 wrote to memory of 2304	2540	cmd.exe	33
PID 268 wrote to memory of 2724	268	cmd.exe	34
PID 268 wrote to memory of 2724	268	cmd.exe	34
PID 268 wrote to memory of 2724	268	cmd.exe	34
PID 268 wrote to memory of 2724	268	cmd.exe	34
PID 268 wrote to memory of 2796	268	cmd.exe	35
PID 268 wrote to memory of 2796	268	cmd.exe	35
PID 268 wrote to memory of 2796	268	cmd.exe	35
PID 268 wrote to memory of 2796	268	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe
"C:\Users\Admin\AppData\Local\Temp\6040d6caf2c0aaee9c3d5ee3fbae9a60N.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Microsoft-(R)-Analystics-Windows" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft-(R)-Analystics-Windows.exe"' & exit
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2540
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Microsoft-(R)-Analystics-Windows" /tr '"C:\Users\Admin\AppData\Roaming\Microsoft-(R)-Analystics-Windows.exe"'
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2304
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpA6F9.tmp.bat""
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:268
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - System Location Discovery: System Language Discovery
    - Delays execution with timeout.exe
    PID:2724
- - C:\Users\Admin\AppData\Roaming\Microsoft-(R)-Analystics-Windows.exe
    "C:\Users\Admin\AppData\Roaming\Microsoft-(R)-Analystics-Windows.exe"
    3⤵
    - Executes dropped EXE
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    PID:2796

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\tmpA6F9.tmp.bat

Filesize
176B

MD5
e5f33f4dc82ecfbf148587a6777448d2

SHA1
6d631f33496af07061878782189412658daca458

SHA256
6362186e97db509b8eb9213e0bcf3fd7f35eb21fe9ce31904cf2c845388395c6

SHA512
95963eed4587c22eadfe34c2769c18086fcc4dea9346348e0cda769e8c15aecacc15c0070a8e2555749d767bc5c81cfb34f246cf9a09487bb0e92578e15e2530

Download Submit
\Users\Admin\AppData\Roaming\Microsoft-(R)-Analystics-Windows.exe

Filesize
269KB

MD5
6040d6caf2c0aaee9c3d5ee3fbae9a60

SHA1
f16980309317783c10cc367fd8f9b5cde116a4d7

SHA256
56f5b03c3fcdb4f48a597fa123250a9b2dde9ccfecdabfc0c05e64a0df232485

SHA512
56fa9d1215a905163de6a8acf90d3dacc5bb4c4f00f546812245c3cacfcea08893aa94413d5204d29a0cb2620894fab038ae2089e1c464b14ad443bf6dda7c58

Download Submit
memory/2352-0-0x0000000074BCE000-0x0000000074BCF000-memory.dmp

Filesize
4KB

Download
memory/2352-1-0x0000000000B80000-0x0000000000BC8000-memory.dmp

Filesize
288KB

Download
memory/2352-2-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2352-12-0x0000000074BC0000-0x00000000752AE000-memory.dmp

Filesize
6.9MB

Download
memory/2796-16-0x0000000000DA0000-0x0000000000DE8000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads