asyncrat | 7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f

General

Target

7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe
Size

1.7MB
MD5

4617174e6053cbec25e7c18bace5d231
SHA1

5ebef0ad6997b7948ca30057b64a0c7687b25d33
SHA256

7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f
SHA512

cc405d0798d437ca7ab5d6fe0c09b726e5ae16057e20f8f83d54633b17993387a6bd353c390129c1f546e11d40d1296ec21135e5b7f9baeedc2e928e3f9fd57f
SSDEEP

24576:tXKRZcz+jlc4ibwDQMfUU4EzR5TZ+4QFZ3mBuETqyQN7RsHXdsjszjUxov7tTX:QS+Xl4aRn+xVaqyQNaNsgbv7FX

Score

10^/10

asyncrat default discovery rat upx

Malware Config

Extracted

Family

asyncrat

Botnet

Default

C2

allay.x3322.net:5050

Mutex

gnrfjlujxmukjuvrs

Attributes

delay
1
install
true
install_file
WriteFile.exe
install_folder
%AppData%

aes.plain

Signatures

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

VenomRAT 5 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral1/memory/2432-0-0x0000000000400000-0x00000000005FF000-memory.dmp	VenomRAT
behavioral1/memory/2432-7-0x0000000000400000-0x00000000005FF000-memory.dmp	VenomRAT
behavioral1/files/0x0007000000017801-12.dat	VenomRAT
behavioral1/memory/2448-14-0x0000000000E50000-0x0000000000E68000-memory.dmp	VenomRAT
behavioral1/memory/2380-31-0x0000000000F60000-0x0000000000F78000-memory.dmp	VenomRAT

Async RAT payload 1 IoCs

rat

resource	yara_rule
behavioral1/files/0x0007000000017801-12.dat	family_asyncrat

Executes dropped EXE 2 IoCs

pid	Process
2448	Client.exe
2380	WriteFile.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2432-2-0x0000000068CD0000-0x0000000068CDF000-memory.dmp	upx
behavioral1/memory/2432-1-0x0000000068CD0000-0x0000000068CDF000-memory.dmp	upx

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2052	2432	WerFault.exe	29

System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe

Delays execution with timeout.exe 1 IoCs

evasion

pid	Process
2340	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
2156	schtasks.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe
2448	Client.exe
2380	WriteFile.exe
2380	WriteFile.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2448	Client.exe
Token: SeDebugPrivilege	2380	WriteFile.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe
2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe
2380	WriteFile.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2432 wrote to memory of 2448	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	31
PID 2432 wrote to memory of 2448	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	31
PID 2432 wrote to memory of 2448	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	31
PID 2432 wrote to memory of 2448	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	31
PID 2448 wrote to memory of 2576	2448	Client.exe	32
PID 2448 wrote to memory of 2576	2448	Client.exe	32
PID 2448 wrote to memory of 2576	2448	Client.exe	32
PID 2448 wrote to memory of 1404	2448	Client.exe	34
PID 2448 wrote to memory of 1404	2448	Client.exe	34
PID 2448 wrote to memory of 1404	2448	Client.exe	34
PID 1404 wrote to memory of 2340	1404	cmd.exe	37
PID 1404 wrote to memory of 2340	1404	cmd.exe	37
PID 1404 wrote to memory of 2340	1404	cmd.exe	37
PID 2432 wrote to memory of 2052	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	36
PID 2432 wrote to memory of 2052	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	36
PID 2432 wrote to memory of 2052	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	36
PID 2432 wrote to memory of 2052	2432	7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe	36
PID 2576 wrote to memory of 2156	2576	cmd.exe	38
PID 2576 wrote to memory of 2156	2576	cmd.exe	38
PID 2576 wrote to memory of 2156	2576	cmd.exe	38
PID 1404 wrote to memory of 2380	1404	cmd.exe	39
PID 1404 wrote to memory of 2380	1404	cmd.exe	39
PID 1404 wrote to memory of 2380	1404	cmd.exe	39

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\7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe
"C:\Users\Admin\AppData\Local\Temp\7300c7b0a478fe6da9bf95c90630f0bb712127e52e99aaad889428a2de1fbc5f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2432
- C:\Client.exe
  "C:\Client.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2448
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "WriteFile" /tr '"C:\Users\Admin\AppData\Roaming\WriteFile.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2576
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "WriteFile" /tr '"C:\Users\Admin\AppData\Roaming\WriteFile.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:2156
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpDAD5.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1404
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:2340
  - - C:\Users\Admin\AppData\Roaming\WriteFile.exe
      "C:\Users\Admin\AppData\Roaming\WriteFile.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:2380
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2432 -s 896
  2⤵
  - Program crash
  PID:2052

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Client.exe

Filesize
74KB

MD5
b7d579e26b673c6866c448e6af708515

SHA1
ef19b6d6fcd369c8636dc0539dd32589a89f2c09

SHA256
6035245b15f24292d031bb460c6b9a4301ced628f93d37b58771aca3b49aa07a

SHA512
df0ad0004e9e40274bdd4ac586400b096679d456e35b0ac2a2d25c15cff17557428bb38023c8ed38c52e3d7eef962cfd1c3092f82fe5ea2ef1cf0ea442c8741c

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpDAD5.tmp.bat

Filesize
153B

MD5
fe6d55d23820b565423e5604517a3b81

SHA1
fcbcdf99c4e2229daa4934ee6811f90317bd6f35

SHA256
4a32aae1ccb9f3e21fd0a580bdacf04f91cc94a049dbec15246ffce5c20022f8

SHA512
a36a2dd64b7d3158ec40bdf425f301a0f3af0417e1d0cef89c1534b0f987c677f87738532b20f0c874335499bf9749337c8d5ad2f6ca50f8c65624276679c52e

Download Submit
C:\Users\Admin\AppData\Roaming\MyData\DataLogs.conf

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
memory/2380-31-0x0000000000F60000-0x0000000000F78000-memory.dmp

Filesize
96KB

Download
memory/2432-7-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2432-0-0x0000000000400000-0x00000000005FF000-memory.dmp

Filesize
2.0MB

Download
memory/2432-1-0x0000000068CD0000-0x0000000068CDF000-memory.dmp

Filesize
60KB

Download
memory/2432-2-0x0000000068CD0000-0x0000000068CDF000-memory.dmp

Filesize
60KB

Download
memory/2448-13-0x000007FEF5663000-0x000007FEF5664000-memory.dmp

Filesize
4KB

Download
memory/2448-14-0x0000000000E50000-0x0000000000E68000-memory.dmp

Filesize
96KB

Download
memory/2448-16-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2448-17-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download
memory/2448-27-0x000007FEF5660000-0x000007FEF604C000-memory.dmp

Filesize
9.9MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads