asyncrat | 558909412427b05911a02cddfe00fc5e9d30bc38e1ba636d04aa7efb63438ec8

Analysis

max time kernel
1562s
max time network
1563s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
23-11-2024 06:46

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General

Target

Project Buu/Dependencies/Dependencies.exe
Size

63KB
MD5

97be07e4d8fa640d71aa049385d8bcc2
SHA1

cd21b0a98183abe177ce6b1a857f9b4166100b4d
SHA256

df4e19980ecdf58f0a6562bad1e4929e30e21f4b3633f9f33ad4b86a5406ee31
SHA512

23e6b9ea22b2dead07d5b6baf076afcf747e8ba02df9afbc81ca3011f91035cf6d385c5a9dd5ae63fe6f95010ab928379baf4d55cbb04c4bbdcf246689e52cd4
SSDEEP

768:b2yVjLFj7778BIC8A+XkaazcBRL5JTk1+T4KSBGHmDbD/ph0oX2f2/F5qVKGVxSD:jJ7TPdSJYUbdh9GMMKGOuodpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

79.110.49.58:3232

Attributes

delay
1
install
true
install_file
Windows Security .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
behavioral3/files/0x00080000000120f9-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2840	Windows Security .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 2 IoCs

evasion

pid	Process
2232	timeout.exe
540	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
2380	schtasks.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
2148	Dependencies.exe
2148	Dependencies.exe
2148	Dependencies.exe
2148	Dependencies.exe
2148	Dependencies.exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe
2840	Windows Security .exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2148	Dependencies.exe
Token: SeDebugPrivilege	2840	Windows Security .exe

Suspicious use of WriteProcessMemory 27 IoCs

description	pid	Process	procid_target
PID 2148 wrote to memory of 2184	2148	Dependencies.exe	30
PID 2148 wrote to memory of 2184	2148	Dependencies.exe	30
PID 2148 wrote to memory of 2184	2148	Dependencies.exe	30
PID 2148 wrote to memory of 1648	2148	Dependencies.exe	32
PID 2148 wrote to memory of 1648	2148	Dependencies.exe	32
PID 2148 wrote to memory of 1648	2148	Dependencies.exe	32
PID 2184 wrote to memory of 2380	2184	cmd.exe	33
PID 2184 wrote to memory of 2380	2184	cmd.exe	33
PID 2184 wrote to memory of 2380	2184	cmd.exe	33
PID 1648 wrote to memory of 2232	1648	cmd.exe	35
PID 1648 wrote to memory of 2232	1648	cmd.exe	35
PID 1648 wrote to memory of 2232	1648	cmd.exe	35
PID 1648 wrote to memory of 2840	1648	cmd.exe	37
PID 1648 wrote to memory of 2840	1648	cmd.exe	37
PID 1648 wrote to memory of 2840	1648	cmd.exe	37
PID 2840 wrote to memory of 2916	2840	Windows Security .exe	39
PID 2840 wrote to memory of 2916	2840	Windows Security .exe	39
PID 2840 wrote to memory of 2916	2840	Windows Security .exe	39
PID 2840 wrote to memory of 1608	2840	Windows Security .exe	41
PID 2840 wrote to memory of 1608	2840	Windows Security .exe	41
PID 2840 wrote to memory of 1608	2840	Windows Security .exe	41
PID 2916 wrote to memory of 1308	2916	cmd.exe	43
PID 2916 wrote to memory of 1308	2916	cmd.exe	43
PID 2916 wrote to memory of 1308	2916	cmd.exe	43
PID 1608 wrote to memory of 540	1608	cmd.exe	44
PID 1608 wrote to memory of 540	1608	cmd.exe	44
PID 1608 wrote to memory of 540	1608	cmd.exe	44

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\Project Buu\Dependencies\Dependencies.exe
"C:\Users\Admin\AppData\Local\Temp\Project Buu\Dependencies\Dependencies.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2148
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Windows Security " /tr '"C:\Users\Admin\AppData\Roaming\Windows Security .exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2184
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Windows Security " /tr '"C:\Users\Admin\AppData\Roaming\Windows Security .exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2380
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpC9E4.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1648
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2232
- - C:\Users\Admin\AppData\Roaming\Windows Security .exe
    "C:\Users\Admin\AppData\Roaming\Windows Security .exe"
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2840
  - - C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c schtasks /delete /f /tn "Windows Security "
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2916
    - - C:\Windows\system32\schtasks.exe
        
        schtasks /delete /f /tn "Windows Security "
        5⤵
        
        PID:1308
  - - C:\Windows\system32\cmd.exe
      cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmp3886.tmp.bat""
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1608
    - - C:\Windows\system32\timeout.exe
        
        timeout 3
        5⤵
        Delays execution with timeout.exe
        
        PID:540

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Persistence

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Privilege Escalation

Scheduled Task/Job

T1053

Scheduled Task

T1053.005

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\CabF578.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar35F4.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmp3886.tmp.bat

Filesize
166B

MD5
df2d335278f1ed87882f697dc81348e1

SHA1
4ee443d72fa490a2ab04eb3d5af686f38dce74d2

SHA256
5cf3bc7331af21ec2b476abd9b66f1118ea0f038420f0c7e196d70e724cffc86

SHA512
09de57579c2a4d813efa7e8b6bda6c93ecea3b72a5746f9cf488585ece0723ca57e48026a45b24207366d6a7cf0834811298d7aa8a172d96995bfe95d6177732

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpC9E4.tmp.bat

Filesize
161B

MD5
c790e052f92183987e3ffe899b1f7966

SHA1
d057af4336e688bfaadff5ab97e3d7b4bf29350a

SHA256
ee9f031ec9d69e3c0682ea1a0235bb0f625cdb64657f6028c510e408bab5eeb1

SHA512
7ab5e6e6924cf0056f36357fb697dae4f5e227c619aece8997af04f8bf5ea063355719ab86c273f69f5dcdc9f1cb1841d0caef95b073857a4c2d54bd89b39105

Download Submit
C:\Users\Admin\AppData\Roaming\Windows Security .exe

Filesize
63KB

MD5
97be07e4d8fa640d71aa049385d8bcc2

SHA1
cd21b0a98183abe177ce6b1a857f9b4166100b4d

SHA256
df4e19980ecdf58f0a6562bad1e4929e30e21f4b3633f9f33ad4b86a5406ee31

SHA512
23e6b9ea22b2dead07d5b6baf076afcf747e8ba02df9afbc81ca3011f91035cf6d385c5a9dd5ae63fe6f95010ab928379baf4d55cbb04c4bbdcf246689e52cd4

Download Submit
memory/2148-0-0x000007FEF55B3000-0x000007FEF55B4000-memory.dmp

Filesize
4KB

Download
memory/2148-1-0x0000000000E10000-0x0000000000E26000-memory.dmp

Filesize
88KB

Download
memory/2148-2-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2148-3-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2148-13-0x000007FEF55B0000-0x000007FEF5F9C000-memory.dmp

Filesize
9.9MB

Download
memory/2840-17-0x0000000001250000-0x0000000001266000-memory.dmp

Filesize
88KB

Download
memory/2840-35-0x00000000006C0000-0x0000000000772000-memory.dmp

Filesize
712KB

Download