asyncrat | 1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965 | Triage

Resubmissions

13-01-2025 00:08

250113-afd6eswkgy 10

11-01-2025 17:29

250111-v2yr6svkbv 10

Analysis

max time kernel
896s
max time network
898s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
13-01-2025 00:08

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General

Target

Infected.exe
Size

63KB
MD5

abcbbfd4f4cdcef98962ad976802fb69
SHA1

ecce5776a92707e00b28441975e73a715f9e2185
SHA256

1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965
SHA512

e38348d3f6983e02378dd4649630fd0a39ad6428bc82aa6f2738f1ec794b9b48db7457b3009f7f65e49fc5d994dcde6105fdf72bd572086d8017558aab541100
SSDEEP

768:RdGnVhwdjndk78TQC8A+XiuazcBRL5JTk1+T4KSBGHmDbD/ph0oXQxa/qSuAdpqM:mnSdsNdSJYUbdh9QxaFuAdpqKmY7

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

mbaper-28496.portmap.host:2420

mbaper-28496.portmap.host:28833

Attributes

delay
1
install
true
install_file
Google.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

resource	yara_rule
behavioral1/files/0x000c000000012280-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2836	Google.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

pid	Process
2696	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

pid	Process
2768	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2456	Infected.exe
2456	Infected.exe
2456	Infected.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2456	Infected.exe
Token: SeDebugPrivilege	2836	Google.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2456 wrote to memory of 2316	2456	Infected.exe	31
PID 2456 wrote to memory of 2316	2456	Infected.exe	31
PID 2456 wrote to memory of 2316	2456	Infected.exe	31
PID 2456 wrote to memory of 2320	2456	Infected.exe	33
PID 2456 wrote to memory of 2320	2456	Infected.exe	33
PID 2456 wrote to memory of 2320	2456	Infected.exe	33
PID 2320 wrote to memory of 2696	2320	cmd.exe	35
PID 2320 wrote to memory of 2696	2320	cmd.exe	35
PID 2320 wrote to memory of 2696	2320	cmd.exe	35
PID 2316 wrote to memory of 2768	2316	cmd.exe	36
PID 2316 wrote to memory of 2768	2316	cmd.exe	36
PID 2316 wrote to memory of 2768	2316	cmd.exe	36
PID 2320 wrote to memory of 2836	2320	cmd.exe	37
PID 2320 wrote to memory of 2836	2320	cmd.exe	37
PID 2320 wrote to memory of 2836	2320	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\Infected.exe
C:\Users\Admin\AppData\Local\Temp\Infected.exe cmd /c %SIGILL% "SIGTERM|DELETE|SIGKILL"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2456
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "Google" /tr '"C:\Users\Admin\AppData\Roaming\Google.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2316
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "Google" /tr '"C:\Users\Admin\AppData\Roaming\Google.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2768
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpD95E.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2320
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2696
- - C:\Users\Admin\AppData\Roaming\Google.exe
    "C:\Users\Admin\AppData\Roaming\Google.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2836

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

Scheduled Task

Persistence

Scheduled Task/Job

Scheduled Task

Privilege Escalation

Scheduled Task/Job

Scheduled Task

Defense Evasion

Credential Access

Discovery

Query Registry

System Information Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpD95E.tmp.bat

Filesize
150B

MD5
aefd932f9e038adfd929d468b06c5fdc

SHA1
fc83a8836a1a67fe1a4e5aca5b9d06003a658a12

SHA256
853071d27d5a797807318cff7dcbd7824757847ac1a2baee115d71634e25c34f

SHA512
3377a0d15826e60a800b412dc645f31079aec2db0b6c226e695f01f3c523ec0991b52decb22bfbbba241a5133b7984eead2cda654d97445fff8e590c2187edb5

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

Filesize
63KB

MD5
abcbbfd4f4cdcef98962ad976802fb69

SHA1
ecce5776a92707e00b28441975e73a715f9e2185

SHA256
1ee1af228d0cfcf2beae5a2df53a291d24fb6213c5e453cfb09c155b20a7a965

SHA512
e38348d3f6983e02378dd4649630fd0a39ad6428bc82aa6f2738f1ec794b9b48db7457b3009f7f65e49fc5d994dcde6105fdf72bd572086d8017558aab541100

Download Submit
memory/2456-0-0x000007FEF5BE3000-0x000007FEF5BE4000-memory.dmp

Filesize
4KB

Download
memory/2456-1-0x0000000000FA0000-0x0000000000FB6000-memory.dmp

Filesize
88KB

Download
memory/2456-2-0x000007FEF5BE0000-0x000007FEF65CC000-memory.dmp

Filesize
9.9MB

Download
memory/2456-3-0x000007FEF5BE0000-0x000007FEF65CC000-memory.dmp

Filesize
9.9MB

Download
memory/2456-13-0x000007FEF5BE0000-0x000007FEF65CC000-memory.dmp

Filesize
9.9MB

Download
memory/2836-17-0x00000000003C0000-0x00000000003D6000-memory.dmp

Filesize
88KB

Download