asyncrat | 4f009430e013267656dca53381d5dbbf0ea5dbb695d87fcf92e8109c836efd58

General

Target

image logger.exe
Size

48KB
MD5

505210a90b66dceef47778cafebf7f6d
SHA1

c593d5f8b4aa53c59d2568ba02e935c6a7650a1e
SHA256

4f009430e013267656dca53381d5dbbf0ea5dbb695d87fcf92e8109c836efd58
SHA512

992176faa1c037bdf33dd9686b49d3115f457d7b1de8b9fc36b1e59d85ac1a446ba186941c40e5c6b9da88fd27bd746c026cb028a10004c5d27e6e4419e11c23
SSDEEP

768:TFWgtBBILDmY1+VxiZRkHigH8Ybug0ABsNqT5uvEgK/JfZVc6KN:TFDak8ZRkRzbR0+sNqtunkJfZVclN

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

Mutex

DcRatMutex_qwqdanchun

Attributes

c2_url_file
https://Pastebin.com/raw/fevFJe98
delay
1
install
true
install_file
image logger.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/0x000a000000012250-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2544	image logger.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 26 IoCs

Web Service

T1102

flow	ioc
9	pastebin.com
15	pastebin.com
16	pastebin.com
20	pastebin.com
24	pastebin.com
4	pastebin.com
7	pastebin.com
10	pastebin.com
12	pastebin.com
14	pastebin.com
19	pastebin.com
21	pastebin.com
22	pastebin.com
5	pastebin.com
27	pastebin.com
29	pastebin.com
25	pastebin.com
26	pastebin.com
8	pastebin.com
11	pastebin.com
13	pastebin.com
17	pastebin.com
18	pastebin.com
23	pastebin.com
28	pastebin.com
6	pastebin.com

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

evasion

pid	Process
1236	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
2596	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2820	image logger.exe
2820	image logger.exe
2820	image logger.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2820	image logger.exe
Token: SeDebugPrivilege	2544	image logger.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2820 wrote to memory of 2684	2820	image logger.exe	30
PID 2820 wrote to memory of 2684	2820	image logger.exe	30
PID 2820 wrote to memory of 2684	2820	image logger.exe	30
PID 2820 wrote to memory of 2584	2820	image logger.exe	32
PID 2820 wrote to memory of 2584	2820	image logger.exe	32
PID 2820 wrote to memory of 2584	2820	image logger.exe	32
PID 2584 wrote to memory of 1236	2584	cmd.exe	34
PID 2584 wrote to memory of 1236	2584	cmd.exe	34
PID 2584 wrote to memory of 1236	2584	cmd.exe	34
PID 2684 wrote to memory of 2596	2684	cmd.exe	35
PID 2684 wrote to memory of 2596	2684	cmd.exe	35
PID 2684 wrote to memory of 2596	2684	cmd.exe	35
PID 2584 wrote to memory of 2544	2584	cmd.exe	36
PID 2584 wrote to memory of 2544	2584	cmd.exe	36
PID 2584 wrote to memory of 2544	2584	cmd.exe	36

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\image logger.exe
"C:\Users\Admin\AppData\Local\Temp\image logger.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2820
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "image logger" /tr '"C:\Users\Admin\AppData\Roaming\image logger.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2684
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "image logger" /tr '"C:\Users\Admin\AppData\Roaming\image logger.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2596
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpF8A1.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2584
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:1236
- - C:\Users\Admin\AppData\Roaming\image logger.exe
    "C:\Users\Admin\AppData\Roaming\image logger.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2544

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

Web Service

1

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpF8A1.tmp.bat

Filesize
156B

MD5
628d1f23f9c77584d8cfa5258062d327

SHA1
2554efa428776dfeaa89fb7b8d85dacc3b38210b

SHA256
380a1f8e0668cf3e0d50333f9f20004e3253fdb35ff194efb6ba6a6ebf33f340

SHA512
0e8ccf8bb4c832fa0142836c3db549bc08afe7cf4e10e193c1efee63afe88015a72d1c16438c5bb78e85be0dfedb3fb0304c6632dc122e36c1f280a69ae7ab2f

Download Submit
C:\Users\Admin\AppData\Roaming\image logger.exe

Filesize
48KB

MD5
505210a90b66dceef47778cafebf7f6d

SHA1
c593d5f8b4aa53c59d2568ba02e935c6a7650a1e

SHA256
4f009430e013267656dca53381d5dbbf0ea5dbb695d87fcf92e8109c836efd58

SHA512
992176faa1c037bdf33dd9686b49d3115f457d7b1de8b9fc36b1e59d85ac1a446ba186941c40e5c6b9da88fd27bd746c026cb028a10004c5d27e6e4419e11c23

Download Submit
memory/2544-16-0x0000000000970000-0x0000000000982000-memory.dmp

Filesize
72KB

Download
memory/2820-0-0x000007FEF5573000-0x000007FEF5574000-memory.dmp

Filesize
4KB

Download
memory/2820-1-0x0000000000F30000-0x0000000000F42000-memory.dmp

Filesize
72KB

Download
memory/2820-2-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Filesize
9.9MB

Download
memory/2820-11-0x000007FEF5570000-0x000007FEF5F5C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads