asyncrat | 3116a000dc92fe9d3aff0ddb3dfc463d7c7cc6b6aa8930eaf263ec452e2b0a64

General

Target

4.exe
Size

63KB
MD5

0b4a8fb23ffe5c5e781ca66025b9c92e
SHA1

4060edde2c845b354502d5707178ac131154e091
SHA256

3116a000dc92fe9d3aff0ddb3dfc463d7c7cc6b6aa8930eaf263ec452e2b0a64
SHA512

1be871631caa3eec34f8f19050c3674cca9d1f8bdcb945c4f537c9791500f60a2fad7686437d5f64bc32438b1df2e12caec195fae23e7e1b1b48dfc457737ab6
SSDEEP

1536:DrkraNd7bkyyiN5Gbbsw/xWpiPosGZZVclN:v3Nd7bky/bGbbsm8IPYzY

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Version

1.0.7

Botnet

Default

C2

fojeweb571-59953.portmap.host:59953

fojeweb571-59953.portmap.host:4782

Mutex

roaroaroaraoroaroaraoraoraoarororrororororoaroaaoaoaoaroaroar

Attributes

delay
1
install
true
install_file
windows defender firewall.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/0x001d00000002ab0d-11.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
1636	windows defender firewall.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
2156	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
4268	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe
4136	4.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4136	4.exe
Token: SeDebugPrivilege	1636	windows defender firewall.exe

Suspicious use of WriteProcessMemory 10 IoCs

description	pid	Process	procid_target
PID 4136 wrote to memory of 2340	4136	4.exe	77
PID 4136 wrote to memory of 2340	4136	4.exe	77
PID 4136 wrote to memory of 2380	4136	4.exe	78
PID 4136 wrote to memory of 2380	4136	4.exe	78
PID 2380 wrote to memory of 2156	2380	cmd.exe	82
PID 2380 wrote to memory of 2156	2380	cmd.exe	82
PID 2340 wrote to memory of 4268	2340	cmd.exe	81
PID 2340 wrote to memory of 4268	2340	cmd.exe	81
PID 2380 wrote to memory of 1636	2380	cmd.exe	83
PID 2380 wrote to memory of 1636	2380	cmd.exe	83

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\4.exe
"C:\Users\Admin\AppData\Local\Temp\4.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4136
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2340
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "windows defender firewall" /tr '"C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:4268
- C:\Windows\system32\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmp9A1D.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2380
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2156
- - C:\Users\Admin\AppData\Roaming\windows defender firewall.exe
    "C:\Users\Admin\AppData\Roaming\windows defender firewall.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:1636

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

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp9A1D.tmp.bat

Filesize
169B

MD5
70500f7f0e4398a0329a552834291099

SHA1
679224dfa6635488089c4328448be6fec81dcd98

SHA256
cae62a8449dae4fd9252514a1f93ad4d013b9d0d87736dd1a1ceb3c6992e9d5d

SHA512
ea46b742651a07598e1700079e4e179bdef0cd9e297c528c1c3f6c7e3dc9117a551b858dcf47722a0fe604a23c5b64db42269b55d84b52f8081688fff920095f

Download Submit
C:\Users\Admin\AppData\Roaming\windows defender firewall.exe

Filesize
63KB

MD5
0b4a8fb23ffe5c5e781ca66025b9c92e

SHA1
4060edde2c845b354502d5707178ac131154e091

SHA256
3116a000dc92fe9d3aff0ddb3dfc463d7c7cc6b6aa8930eaf263ec452e2b0a64

SHA512
1be871631caa3eec34f8f19050c3674cca9d1f8bdcb945c4f537c9791500f60a2fad7686437d5f64bc32438b1df2e12caec195fae23e7e1b1b48dfc457737ab6

Download Submit
memory/4136-0-0x00007FFA209D3000-0x00007FFA209D5000-memory.dmp

Filesize
8KB

Download
memory/4136-1-0x0000000000D80000-0x0000000000D96000-memory.dmp

Filesize
88KB

Download
memory/4136-2-0x00007FFA209D0000-0x00007FFA21492000-memory.dmp

Filesize
10.8MB

Download
memory/4136-3-0x00007FFA209D0000-0x00007FFA21492000-memory.dmp

Filesize
10.8MB

Download
memory/4136-8-0x00007FFA209D0000-0x00007FFA21492000-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