asyncrat | dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d

General

Target

dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.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/0x001a00000002b1f7-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
4704	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
6072	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
4836	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
Token: SeDebugPrivilege	4704	Nursulan cRack.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 3724 wrote to memory of 2512	3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe	79
PID 3724 wrote to memory of 2512	3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe	79
PID 3724 wrote to memory of 5796	3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe	81
PID 3724 wrote to memory of 5796	3724	dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe	81
PID 2512 wrote to memory of 4836	2512	cmd.exe	83
PID 2512 wrote to memory of 4836	2512	cmd.exe	83
PID 5796 wrote to memory of 6072	5796	cmd.exe	84
PID 5796 wrote to memory of 6072	5796	cmd.exe	84
PID 5796 wrote to memory of 4704	5796	cmd.exe	85
PID 5796 wrote to memory of 4704	5796	cmd.exe	85

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\dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe
"C:\Users\Admin\AppData\Local\Temp\dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3724
- 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:2512
- - 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:4836
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpD448.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5796
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:6072
- - 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:4704

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\Temp\tmpD448.tmp.bat

Filesize
158B

MD5
b764b3a8b55c918e3d790a24400ef925

SHA1
7ef6730e7157aaf39cfd2f0fdc90dbf11f8921da

SHA256
7bc495d0b5eaaacab6402e843d059927e4d07e7da492d27c0edfbd7b38fa70da

SHA512
a608fd65b8b641e283f25a6120c8ab042067d80eca8cede29f98121edad7afedf8c6ffc748b54dbd44821b3c7b381b052050c94d03967c27c064acf52d3eb223

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

Filesize
63KB

MD5
45a29490589e6635ab2734cf38e47c62

SHA1
69aa8013c4ed1616442077aa4995f4cb1f209cee

SHA256
dbbc3b014153cb0742cc5386136f347b3ad61eb539524d8e925a8a28a23cc73d

SHA512
e67d536411faf00e9f62ac6a39991902641bba38e54c6c2581251300545b52177ac35647a1d2e4f502a9864d722ba21ca5b14184a6abf518256397d9570354bd

Download Submit
memory/3724-1-0x0000000000D30000-0x0000000000D46000-memory.dmp

Filesize
88KB

Download
memory/3724-0-0x00007FFC3F4B3000-0x00007FFC3F4B5000-memory.dmp

Filesize
8KB

Download
memory/3724-2-0x00007FFC3F4B0000-0x00007FFC3FF72000-memory.dmp

Filesize
10.8MB

Download
memory/3724-3-0x00007FFC3F4B0000-0x00007FFC3FF72000-memory.dmp

Filesize
10.8MB

Download
memory/3724-9-0x00007FFC3F4B0000-0x00007FFC3FF72000-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