asyncrat | 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

General

Target

15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
Size

453KB
MD5

2bb4a448b0132c70a9f3c03db54a52f3
SHA1

2338d8ae200271ccfcf5bb8d97c8c98c52deb43c
SHA256

15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca
SHA512

5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29
SSDEEP

12288:3GHr/rHAbXqXVpJqrNix6LDQfLlzH1yv5p:3GHrMXqXwAx0QjO

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

0.5.6D

Botnet

Default

C2

seznam.zapto.org:6606

seznam.zapto.org:7707

seznam.zapto.org:8808

Mutex

spqniepxaluvdm

Attributes

delay
5
install
true
install_file
microssofte.exe
install_folder
%AppData%

aes.plain

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat

Async RAT payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/3040-2-0x0000000000320000-0x0000000000332000-memory.dmp	family_asyncrat
behavioral1/memory/2604-18-0x00000000001A0000-0x00000000001B2000-memory.dmp	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2604	microssofte.exe

Loads dropped DLL 1 IoCs

pid	Process
2700	cmd.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

evasion

pid	Process
2324	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
2864	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
Token: SeDebugPrivilege	2604	microssofte.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3040 wrote to memory of 2784	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	30
PID 3040 wrote to memory of 2784	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	30
PID 3040 wrote to memory of 2784	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	30
PID 3040 wrote to memory of 2784	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	30
PID 3040 wrote to memory of 2700	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	31
PID 3040 wrote to memory of 2700	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	31
PID 3040 wrote to memory of 2700	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	31
PID 3040 wrote to memory of 2700	3040	15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe	31
PID 2700 wrote to memory of 2324	2700	cmd.exe	34
PID 2700 wrote to memory of 2324	2700	cmd.exe	34
PID 2700 wrote to memory of 2324	2700	cmd.exe	34
PID 2700 wrote to memory of 2324	2700	cmd.exe	34
PID 2784 wrote to memory of 2864	2784	cmd.exe	35
PID 2784 wrote to memory of 2864	2784	cmd.exe	35
PID 2784 wrote to memory of 2864	2784	cmd.exe	35
PID 2784 wrote to memory of 2864	2784	cmd.exe	35
PID 2700 wrote to memory of 2604	2700	cmd.exe	36
PID 2700 wrote to memory of 2604	2700	cmd.exe	36
PID 2700 wrote to memory of 2604	2700	cmd.exe	36
PID 2700 wrote to memory of 2604	2700	cmd.exe	36

C:\Users\Admin\AppData\Local\Temp\15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe
"C:\Users\Admin\AppData\Local\Temp\15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3040
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /ru system /rl highest /tn 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2784
- - C:\Windows\SysWOW64\schtasks.exe
    schtasks /create /f /sc onlogon /ru system /rl highest /tn 15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca /tr '"C:\Users\Admin\AppData\Roaming\microssofte.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2864
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3F61.tmp.bat""
  2⤵
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:2700
- - C:\Windows\SysWOW64\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2324
- - C:\Users\Admin\AppData\Roaming\microssofte.exe
    "C:\Users\Admin\AppData\Roaming\microssofte.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2604

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

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab6357.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3F61.tmp.bat

Filesize
155B

MD5
0befa8352a43142456fd91bdd226a2dd

SHA1
b36b08f8211078859a1e5f8218eacc44bdb0eada

SHA256
1fa9cb1c8c14ba9aa4f22fb2583de542de9413a6985377fc67065469bc772474

SHA512
e1c8039157cc408e13ad4c1124316657c395d66696c72fdeeac32426a1543ffeaf02703309bd4b070ec6ef5be6ca5a516ad05e1446ee3d9af2abbfc28423726c

Download Submit
\Users\Admin\AppData\Roaming\microssofte.exe

Filesize
453KB

MD5
2bb4a448b0132c70a9f3c03db54a52f3

SHA1
2338d8ae200271ccfcf5bb8d97c8c98c52deb43c

SHA256
15c5c9dc7be64d7d32bf2925ce8412b3f2f212ba7c25af969d9a8ece2086a5ca

SHA512
5352592d1dfb6771db491a18dda53c481aee0a072d2c511959f3e2cf9532ac176a6a2f9520b22a4d4675098e089a819f1b4da89d0ec615c9458bcff1ea4cbe29

Download Submit
memory/2604-17-0x0000000001310000-0x0000000001388000-memory.dmp

Filesize
480KB

Download
memory/2604-18-0x00000000001A0000-0x00000000001B2000-memory.dmp

Filesize
72KB

Download
memory/3040-0-0x000000007456E000-0x000000007456F000-memory.dmp

Filesize
4KB

Download
memory/3040-1-0x0000000000F40000-0x0000000000FB8000-memory.dmp

Filesize
480KB

Download
memory/3040-2-0x0000000000320000-0x0000000000332000-memory.dmp

Filesize
72KB

Download
memory/3040-3-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download
memory/3040-13-0x0000000074560000-0x0000000074C4E000-memory.dmp

Filesize
6.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads