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
behavioral2/files/0x000d00000002404a-10.dat	family_asyncrat

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1279544337-3716153908-718418795-1000\Control Panel\International\Geo\Nation	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe

Executes dropped EXE 1 IoCs

pid	Process
5476	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
2628	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
4736	schtasks.exe

Suspicious behavior: EnumeratesProcesses 23 IoCs

pid	Process
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe
Token: SeDebugPrivilege	5476	usb.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 5456 wrote to memory of 4528	5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	92
PID 5456 wrote to memory of 4528	5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	92
PID 5456 wrote to memory of 5188	5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	94
PID 5456 wrote to memory of 5188	5456	93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64.exe	94
PID 5188 wrote to memory of 2628	5188	cmd.exe	96
PID 5188 wrote to memory of 2628	5188	cmd.exe	96
PID 4528 wrote to memory of 4736	4528	cmd.exe	97
PID 4528 wrote to memory of 4736	4528	cmd.exe	97
PID 5188 wrote to memory of 5476	5188	cmd.exe	102
PID 5188 wrote to memory of 5476	5188	cmd.exe	102

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⤵
- Checks computer location settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5456
- 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:4528
- - 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:4736
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp5C2A.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5188
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2628
- - C:\Users\Admin\AppData\Roaming\usb.exe
    "C:\Users\Admin\AppData\Roaming\usb.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:5476

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

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp5C2A.tmp.bat

Filesize
147B

MD5
3d59c400ea0c66f90ee51f8baaab18b4

SHA1
8a54d3bddd39ef1aeb007bb4bd6ecb37b32beaed

SHA256
fe066aa0098bd32b3f8b0de4b4e57d0a941a066652af575fceb7124df66d0814

SHA512
aafbfa10427826e07eefd552bb0f2dccf54eeff67bed15e6d74cebff240d1733511998b1ff37ad0e17bc6b25e290fbd40c2c9ead6b3f0e165604df50016809f9

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

Filesize
47KB

MD5
9cd4cecc2222edd87b47d91699994f1b

SHA1
4adaad47a38b75be90ce2c09e03570573aa25668

SHA256
93dc353da2ebdd6a3cec8e1d2401f88284001e2083628c40c4cf06a7c8f92a64

SHA512
9a662a47455183be5bd09e81551bcf8e1d632da4fcbc24be0af52b08f1a9eda7ebf9f2c9449ec0e0a238bde95cfc00e828bdfe82c8d23e493651c77bcecf61b9

Download Submit
memory/5456-0-0x00007FFD57703000-0x00007FFD57705000-memory.dmp

Filesize
8KB

Download
memory/5456-1-0x0000000000B50000-0x0000000000B62000-memory.dmp

Filesize
72KB

Download
memory/5456-2-0x00007FFD57700000-0x00007FFD581C1000-memory.dmp

Filesize
10.8MB

Download
memory/5456-7-0x00007FFD57700000-0x00007FFD581C1000-memory.dmp

Filesize
10.8MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads