asyncrat | dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d

General

Target

Nursulan Crack.exe
Size

63KB
MD5

45a29490589e6635ab2734cf38e47c62
SHA1

69aa8013c4ed1616442077aa4995f4cb1f209cee
SHA256

dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d
SHA512

e67d536411faf00e9f62ac6a39991902641bba38e54c6c2581251300545b52177ac35647a1d2e4f502a9864d722ba21ca5b14184a6abf518256397d9570354bd
SSDEEP

768:O1fwJdXHF378LAC8A+XPfXssq8nXhllT9SzGo1+T4/SBGHmDbDFpP0oXNMJSuxkP:kUFBXn9TUzRcYUb3P9mguxkpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

127.0.0.1:3232

Attributes

delay
2
install
true
install_file
Nursulan cRack.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
behavioral2/files/0x001900000002b0e4-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1236	Nursulan cRack.exe

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

System Information Discovery
T1082

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
924	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
5688	schtasks.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

pid	Process
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe
5584	Nursulan Crack.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5584	Nursulan Crack.exe
Token: SeDebugPrivilege	1236	Nursulan cRack.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5584 wrote to memory of 4456	5584	Nursulan Crack.exe	85
PID 5584 wrote to memory of 4456	5584	Nursulan Crack.exe	85
PID 5584 wrote to memory of 5064	5584	Nursulan Crack.exe	87
PID 5584 wrote to memory of 5064	5584	Nursulan Crack.exe	87
PID 4456 wrote to memory of 5688	4456	cmd.exe	89
PID 4456 wrote to memory of 5688	4456	cmd.exe	89
PID 5064 wrote to memory of 924	5064	cmd.exe	90
PID 5064 wrote to memory of 924	5064	cmd.exe	90
PID 5064 wrote to memory of 1236	5064	cmd.exe	91
PID 5064 wrote to memory of 1236	5064	cmd.exe	91

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Users\Admin\AppData\Local\Temp\Nursulan Crack.exe
"C:\Users\Admin\AppData\Local\Temp\Nursulan Crack.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5584
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Nursulan cRack" /tr '"C:\Users\Admin\AppData\Roaming\Nursulan cRack.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4456
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Nursulan cRack" /tr '"C:\Users\Admin\AppData\Roaming\Nursulan cRack.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:5688
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp7762.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5064
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:924
- - C:\Users\Admin\AppData\Roaming\Nursulan cRack.exe
    "C:\Users\Admin\AppData\Roaming\Nursulan cRack.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1236

Network

MITRE ATT&CK Enterprise v16

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

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Nursulan cRack.exe.log

Filesize
871B

MD5
1569f2c982851def168a6a1dad27317a

SHA1
cca0d9a1aca7b213c527efec865e1caee36fa127

SHA256
fc9a4ce0e2bd7b632291798d9b436861bd9006b858ee148811201ebfe6458e26

SHA512
78c9101c78f685829db5314a10f45485813b2ede4561facaa5f965d94077772a2e445610631be15230df27aaeacee08ddd4cd02a9398a5e3877e5b6c16bbe2c1

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp7762.tmp.bat

Filesize
158B

MD5
f219a82a8a83efff572039ce71244300

SHA1
03ec03664bf4e74300949018894483ce08005f9a

SHA256
319459c23a5c65c9f29a970cd9456769cd6597e55e2e795cddcc75c8d5312a16

SHA512
00d4583b336ba63c14789036d6998b791382e1a9f894032dec1e89705c3b4ff9c95a147179a54f83afbe60a2f30736b96174905f054b19d6b45a510dda793306

Download Submit
C:\Users\Admin\AppData\Roaming\Nursulan cRack.exe

Filesize
63KB

MD5
45a29490589e6635ab2734cf38e47c62

SHA1
69aa8013c4ed1616442077aa4995f4cb1f209cee

SHA256
dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d

SHA512
e67d536411faf00e9f62ac6a39991902641bba38e54c6c2581251300545b52177ac35647a1d2e4f502a9864d722ba21ca5b14184a6abf518256397d9570354bd

Download Submit
memory/5584-1-0x0000000000C00000-0x0000000000C16000-memory.dmp

Filesize
88KB

Download
memory/5584-0-0x00007FFF91223000-0x00007FFF91225000-memory.dmp

Filesize
8KB

Download
memory/5584-2-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/5584-3-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download
memory/5584-9-0x00007FFF91220000-0x00007FFF91CE2000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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Downloads