asyncrat | 93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64

General

Target

93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
Size

47KB
MD5

9cd4cecc2222edd87b47d91699994f1b
SHA1

4adaad47a38b75be90ce2c09e03570573aa25668
SHA256

93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64
SHA512

9a662a47455183be5bd09e81551bcf8e1d632da4fcbc24be0af52b08f1a9eda7ebf9f2c9449ec0e0a238bde95cfc00e828bdfe82c8d23e493651c77bcecf61b9
SSDEEP

768:kV0aWbILWCaS+Dimiiv68YbugD4xE0RtvEgK/JjZVc6KN:k6aMWzzbRiECnkJjZVclN

Score

10^/10

asyncrat 7777 rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

7777

C2

up.nemesissoftlab.com:7777

Mutex

7

Attributes

delay
1
install
true
install_file
usb.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
behavioral1/files/0x000900000001660b-14.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2744	usb.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
2884	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
2872	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
Token: SeDebugPrivilege	2744	usb.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2304 wrote to memory of 2008	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	31
PID 2304 wrote to memory of 2008	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	31
PID 2304 wrote to memory of 2008	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	31
PID 2304 wrote to memory of 2456	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	33
PID 2304 wrote to memory of 2456	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	33
PID 2304 wrote to memory of 2456	2304	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	33
PID 2008 wrote to memory of 2872	2008	cmd.exe	35
PID 2008 wrote to memory of 2872	2008	cmd.exe	35
PID 2008 wrote to memory of 2872	2008	cmd.exe	35
PID 2456 wrote to memory of 2884	2456	cmd.exe	36
PID 2456 wrote to memory of 2884	2456	cmd.exe	36
PID 2456 wrote to memory of 2884	2456	cmd.exe	36
PID 2456 wrote to memory of 2744	2456	cmd.exe	37
PID 2456 wrote to memory of 2744	2456	cmd.exe	37
PID 2456 wrote to memory of 2744	2456	cmd.exe	37

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\93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
"C:\Users\Admin\AppData\Local\Temp\93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2304
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "usb" /tr '"C:\Users\Admin\AppData\Roaming\usb.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "usb" /tr '"C:\Users\Admin\AppData\Roaming\usb.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2872
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF306.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2456
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2884
- - C:\Users\Admin\AppData\Roaming\usb.exe
    "C:\Users\Admin\AppData\Roaming\usb.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2744

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

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\tmpF306.tmp.bat

Filesize
147B

MD5
df96d40b94a9c048e2f96884c82aa9f4

SHA1
6bf8d68e275f65ae8c6569b4e416b23635955ed1

SHA256
217d223445d62975acc6eb616f2e6dae1cf105923a3491d42007f51fcb4a7a98

SHA512
0b4341f97fa47c7f3b9582e05425de69f611cceb790449723bedcb0cb76c4b1c323695fcdc8cfdf75c92f750eaa1a1e51c6585df6b79fcc47c39d3adeff8a318

Download Submit
C:\Users\Admin\AppData\Roaming\usb.exe

Filesize
47KB

MD5
9cd4cecc2222edd87b47d91699994f1b

SHA1
4adaad47a38b75be90ce2c09e03570573aa25668

SHA256
93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64

SHA512
9a662a47455183be5bd09e81551bcf8e1d632da4fcbc24be0af52b08f1a9eda7ebf9f2c9449ec0e0a238bde95cfc00e828bdfe82c8d23e493651c77bcecf61b9

Download Submit
memory/2304-0-0x000007FEF58E3000-0x000007FEF58E4000-memory.dmp

Filesize
4KB

Download
memory/2304-1-0x0000000000BF0000-0x0000000000C02000-memory.dmp

Filesize
72KB

Download
memory/2304-2-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2304-12-0x000007FEF58E0000-0x000007FEF62CC000-memory.dmp

Filesize
9.9MB

Download
memory/2744-16-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads