asyncrat | 2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

General

Target

2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
Size

63KB
MD5

1644c4839846a1b6524e38071528a564
SHA1

2250bbb322087bf0ba0a26a83b0e11ce5da6733d
SHA256

2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1
SHA512

06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98
SSDEEP

1536:VYQj1F212+iqsUbDh9xrsGu1SdpqKmY7:KKM1DhsUbD9HGz

Score

10^/10

asyncrat default rat

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

45.139.198.242:6606

Attributes

delay
1
install
true
install_file
MicrosoftServices.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 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0008000000012119-15.dat	family_asyncrat

Executes dropped EXE 1 IoCs

pid	Process
2716	MicrosoftServices.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
2484	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
2324	schtasks.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
Token: SeDebugPrivilege	2716	MicrosoftServices.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2368 wrote to memory of 1792	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	30
PID 2368 wrote to memory of 1792	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	30
PID 2368 wrote to memory of 1792	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	30
PID 2368 wrote to memory of 2148	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	32
PID 2368 wrote to memory of 2148	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	32
PID 2368 wrote to memory of 2148	2368	2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe	32
PID 2148 wrote to memory of 2484	2148	cmd.exe	34
PID 2148 wrote to memory of 2484	2148	cmd.exe	34
PID 2148 wrote to memory of 2484	2148	cmd.exe	34
PID 1792 wrote to memory of 2324	1792	cmd.exe	35
PID 1792 wrote to memory of 2324	1792	cmd.exe	35
PID 1792 wrote to memory of 2324	1792	cmd.exe	35
PID 2148 wrote to memory of 2716	2148	cmd.exe	37
PID 2148 wrote to memory of 2716	2148	cmd.exe	37
PID 2148 wrote to memory of 2716	2148	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\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe
"C:\Users\Admin\AppData\Local\Temp\2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1.exe"
1⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2368
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"' & exit
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1792
- - C:\Windows\system32\schtasks.exe
    schtasks /create /f /sc onlogon /rl highest /tn "MicrosoftServices" /tr '"C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"'
    3⤵
    - Scheduled Task/Job: Scheduled Task
    PID:2324
- C:\Windows\system32\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpCA9F.tmp.bat""
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2148
- - C:\Windows\system32\timeout.exe
    timeout 3
    3⤵
    - Delays execution with timeout.exe
    PID:2484
- - C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe
    "C:\Users\Admin\AppData\Roaming\MicrosoftServices.exe"
    3⤵
    - Executes dropped EXE
    - Suspicious use of AdjustPrivilegeToken
    PID:2716

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\tmpCA9F.tmp.bat

Filesize
161B

MD5
0fa8d18d69089f8f1e6f0ba3de68e9d5

SHA1
89d9fef39178eaf43f0a130f30d2ba825ea5b2cf

SHA256
bd963da372c27cd0a0e23b88a56d31f9dbcc20325cfb490cad04b07d96a6c99c

SHA512
22d1518119758737d0861bd64a821c9b4a2154f26b36d339b8a2aa9d4e1c4bdaa53682da66ee16223841407e0955f1cf4c3a2c7de48e183408707d64075a098d

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

Filesize
63KB

MD5
1644c4839846a1b6524e38071528a564

SHA1
2250bbb322087bf0ba0a26a83b0e11ce5da6733d

SHA256
2f9e7eff2a3dc88b9db2382875b0d3ad4241ac09e97e8d1d779a533a8fc1d8d1

SHA512
06c28e8198d75aa5df58d678ae6145e388c5ee41f9f06b5de89e06fd821c91d5b4ef5cf3305493697eb870f0f9ab41b1e4b4de50301d0c3cf6a471de0c04eb98

Download Submit
memory/2368-0-0x000007FEF5E13000-0x000007FEF5E14000-memory.dmp

Filesize
4KB

Download
memory/2368-1-0x00000000010D0000-0x00000000010E6000-memory.dmp

Filesize
88KB

Download
memory/2368-2-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2368-3-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2368-13-0x000007FEF5E10000-0x000007FEF67FC000-memory.dmp

Filesize
9.9MB

Download
memory/2716-17-0x0000000000A50000-0x0000000000A66000-memory.dmp

Filesize
88KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads