asyncrat | ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72

Analysis

max time kernel
59s
max time network
59s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 04:34

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General

Target

ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
Size

30.1MB
MD5

5fb9e419d4ae63f3483630e314aedf4b
SHA1

fd0e4f4c9faacf239154bffc4ab9df2a36d5a38a
SHA256

ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72
SHA512

50dd2aaf40a63c2604b74a303402344d5d34e8191790099a23dd842baa98fca108c414352e167485b2ee333a184eb17667d0ae9036920c8b1f49104c6f627f4b
SSDEEP

786432:CGHzzuqE2+z5m4K+I6yybsorCII/v9ZH4+gX/AxWMX84j5NF:CGHzm2+zvKb6yybHrCJDzSAxZF

Score

10^/10

asyncrat eulenv4 defense_evasion discovery rat

Malware Config

Extracted

Family

asyncrat

Version

Venom RAT + HVNC + Stealer + Grabber v6.0.3

Botnet

EulenV4

Mutex

chxtzuezuve

Attributes

delay
1
install
true
install_file
svchost.exe
install_folder
%AppData%
pastebin_config
https://pastebin.com/raw/KnhCGRrn

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/0x0008000000014c66-15.dat	family_asyncrat

Executes dropped EXE 5 IoCs

pid	Process
2956	runtime.exe
2108	svchost.exe
1860	loader.exe
2508	loader.exe
536	svchost.exe

Loads dropped DLL 5 IoCs

pid	Process
1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
1860	loader.exe
2508	loader.exe

Legitimate hosting services abused for malware hosting/C2 1 TTPs 9 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
6	pastebin.com
7	pastebin.com
8	pastebin.com
9	pastebin.com
11	pastebin.com
4	pastebin.com
10	pastebin.com
12	pastebin.com

Obfuscated Files or Information: Command Obfuscation 1 TTPs
Adversaries may obfuscate content during command execution to impede detection.
defense_evasion

Command Obfuscation
T1027.010
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 2 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	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Delays execution with timeout.exe 1 IoCs

defense_evasion

pid	Process
592	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
1288	schtasks.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
2252	powershell.exe
2108	svchost.exe
2108	svchost.exe
2108	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe
536	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2252	powershell.exe
Token: SeDebugPrivilege	2108	svchost.exe
Token: SeDebugPrivilege	2108	svchost.exe
Token: SeDebugPrivilege	536	svchost.exe
Token: SeDebugPrivilege	536	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
536	svchost.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1316 wrote to memory of 2252	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	28
PID 1316 wrote to memory of 2252	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	28
PID 1316 wrote to memory of 2252	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	28
PID 1316 wrote to memory of 2252	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	28
PID 1316 wrote to memory of 2956	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1316 wrote to memory of 2956	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1316 wrote to memory of 2956	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1316 wrote to memory of 2956	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1316 wrote to memory of 2108	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1316 wrote to memory of 2108	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1316 wrote to memory of 2108	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1316 wrote to memory of 2108	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1316 wrote to memory of 1860	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	32
PID 1316 wrote to memory of 1860	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	32
PID 1316 wrote to memory of 1860	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	32
PID 1316 wrote to memory of 1860	1316	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	32
PID 2956 wrote to memory of 2668	2956	runtime.exe	33
PID 2956 wrote to memory of 2668	2956	runtime.exe	33
PID 2956 wrote to memory of 2668	2956	runtime.exe	33
PID 1860 wrote to memory of 2508	1860	loader.exe	34
PID 1860 wrote to memory of 2508	1860	loader.exe	34
PID 1860 wrote to memory of 2508	1860	loader.exe	34
PID 2108 wrote to memory of 1740	2108	svchost.exe	35
PID 2108 wrote to memory of 1740	2108	svchost.exe	35
PID 2108 wrote to memory of 1740	2108	svchost.exe	35
PID 2108 wrote to memory of 2560	2108	svchost.exe	37
PID 2108 wrote to memory of 2560	2108	svchost.exe	37
PID 2108 wrote to memory of 2560	2108	svchost.exe	37
PID 1740 wrote to memory of 1288	1740	cmd.exe	39
PID 1740 wrote to memory of 1288	1740	cmd.exe	39
PID 1740 wrote to memory of 1288	1740	cmd.exe	39
PID 2560 wrote to memory of 592	2560	cmd.exe	40
PID 2560 wrote to memory of 592	2560	cmd.exe	40
PID 2560 wrote to memory of 592	2560	cmd.exe	40
PID 2560 wrote to memory of 536	2560	cmd.exe	41
PID 2560 wrote to memory of 536	2560	cmd.exe	41
PID 2560 wrote to memory of 536	2560	cmd.exe	41

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\ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
"C:\Users\Admin\AppData\Local\Temp\ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1316
- C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -EncodedCommand "PAAjAHAAaABuACMAPgBBAGQAZAAtAE0AcABQAHIAZQBmAGUAcgBlAG4AYwBlACAAPAAjAGwAdwBhACMAPgAgAC0ARQB4AGMAbAB1AHMAaQBvAG4AUABhAHQAaAAgAEAAKAAkAGUAbgB2ADoAVQBzAGUAcgBQAHIAbwBmAGkAbABlACwAJABlAG4AdgA6AFMAeQBzAHQAZQBtAEQAcgBpAHYAZQApACAAPAAjAHoAZwB5ACMAPgAgAC0ARgBvAHIAYwBlACAAPAAjAGgAYQBwACMAPgA="
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:2252
- C:\Users\Admin\AppData\Local\Temp\runtime.exe
  "C:\Users\Admin\AppData\Local\Temp\runtime.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:2956
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2956 -s 528
    3⤵
    PID:2668
- C:\Users\Admin\AppData\Local\Temp\svchost.exe
  "C:\Users\Admin\AppData\Local\Temp\svchost.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2108
- - C:\Windows\System32\cmd.exe
    "C:\Windows\System32\cmd.exe" /c schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"' & exit
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1740
  - - C:\Windows\system32\schtasks.exe
      schtasks /create /f /sc onlogon /rl highest /tn "svchost" /tr '"C:\Users\Admin\AppData\Roaming\svchost.exe"'
      4⤵
      Scheduled Task/Job: Scheduled Task
      PID:1288
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpBD47.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2560
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:592
  - - C:\Users\Admin\AppData\Roaming\svchost.exe
      "C:\Users\Admin\AppData\Roaming\svchost.exe"
      4⤵
      Executes dropped EXE
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:536
- C:\Users\Admin\AppData\Local\Temp\loader.exe
  "C:\Users\Admin\AppData\Local\Temp\loader.exe"
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious use of WriteProcessMemory
  PID:1860
- - C:\Users\Admin\AppData\Local\Temp\onefile_1860_133876100818826000\loader.exe
    C:\Users\Admin\AppData\Local\Temp\loader.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:2508

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

Obfuscated Files or Information

T1027

Command Obfuscation

T1027.010

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Web Service

T1102

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\loader.exe

Filesize
20.7MB

MD5
4ed0d5143664ce4d6a25072f1c465616

SHA1
e560ecd9fe3a6754d72493d9e0e796e3837be5df

SHA256
ac9bb0231e3e3e4305a2cf44708dbf7e0e6cfa286faac9bc687c364a4070e398

SHA512
d763f44d7a5bff11a3a75c7b4182362ad63d33618402480aa3c993b1ed8f21dfda0e70cf25e71e33ffac5f9ca541fa0a3c96c53abb510fc36a5917373528f466

Download Submit
C:\Users\Admin\AppData\Local\Temp\onefile_1860_133876100818826000\loader.exe

Filesize
12.0MB

MD5
d40e357c84cda7eb31419a69ae038d97

SHA1
853d03a0cfe3aa0f21d16b2da378e4554c71a088

SHA256
45215606ecea7c6d2624d05ee6b0703beb9d0abdf42566c77ccb89576338b8c6

SHA512
82a67c7be3fef7d4deb4d1c1e85d392fdfb16e830f9574868c8bcc42aa3eb8a3435b0d3d0786a1015af8f8b41f66074a1825a24eb559e42b164aca71ee3dca2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\onefile_1860_133876100818826000\python311.dll

Filesize
5.5MB

MD5
9a24c8c35e4ac4b1597124c1dcbebe0f

SHA1
f59782a4923a30118b97e01a7f8db69b92d8382a

SHA256
a0cf640e756875c25c12b4a38ba5f2772e8e512036e2ac59eb8567bf05ffbfb7

SHA512
9d9336bf1f0d3bc9ce4a636a5f4e52c5f9487f51f00614fc4a34854a315ce7ea8be328153812dbd67c45c75001818fa63317eba15a6c9a024fa9f2cab163165b

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBD47.tmp.bat

Filesize
151B

MD5
fca45214cb8cdfe19ecb3c874564bfbc

SHA1
5ef4f9567f0805a8fb51e97a30374ce1e2ca4fbd

SHA256
ddaa8b042623bc9ce2ca95359897eec9dcabb54d85b2c14c0ad39a241506c1aa

SHA512
a8a979d14aebcaae3fb2cf9f7ed0ebdcafb7cb438fc178e967bb662a6e776567a02e3fb0d0d5cb7e7bad609089e5df97e3107269ce120fa6deffff6f4ea83eb7

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

Filesize
8B

MD5
cf759e4c5f14fe3eec41b87ed756cea8

SHA1
c27c796bb3c2fac929359563676f4ba1ffada1f5

SHA256
c9f9f193409217f73cc976ad078c6f8bf65d3aabcf5fad3e5a47536d47aa6761

SHA512
c7f832aee13a5eb36d145f35d4464374a9e12fa2017f3c2257442d67483b35a55eccae7f7729243350125b37033e075efbc2303839fd86b81b9b4dca3626953b

Download Submit
\Users\Admin\AppData\Local\Temp\runtime.exe

Filesize
58KB

MD5
1ab99ff9dfb2017db1a59403f5ca1c2b

SHA1
4e43875075d8dd21755aa8dd91365d561be43594

SHA256
bd9f8e352f172f3a5ad106388d1fd67ed09f419f1d100bd89e7980e25d273526

SHA512
44bb3c86caa4b2c0c63251d602f03aa5a38d099ece58462dc78d38740981733b731711250b34db2a93c8b2a1fab7e707e29ee010b24129d762daed226d72ca4a

Download Submit
\Users\Admin\AppData\Local\Temp\svchost.exe

Filesize
74KB

MD5
85f89a5f5806117cc82aec6e1f89cd13

SHA1
735d2331d6bc90498f3f1405af0dffa37b136e5d

SHA256
adbce5e454bbc8b27c4ac87f70dee8d622395b541736d6f0af027dd94e454cb7

SHA512
038c96c575f0a1204a4159cd7ac9262f7e1447be9bba28278ddcdd6294280f40399cfb06a89e40460114306c9b5a33d466ac2de7af58575b80cad0921f4a979d

Download Submit
memory/536-113-0x0000000001010000-0x0000000001028000-memory.dmp

Filesize
96KB

Download
memory/1316-47-0x00000000018D2000-0x0000000001DBF000-memory.dmp

Filesize
4.9MB

Download
memory/1316-46-0x0000000000400000-0x0000000003BE0000-memory.dmp

Filesize
55.9MB

Download
memory/1316-0-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1316-6-0x0000000000400000-0x0000000003BE0000-memory.dmp

Filesize
55.9MB

Download
memory/1316-2-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1316-4-0x0000000000230000-0x0000000000231000-memory.dmp

Filesize
4KB

Download
memory/1316-7-0x00000000018D2000-0x0000000001DBF000-memory.dmp

Filesize
4.9MB

Download
memory/1860-115-0x000000013FB00000-0x0000000140FDA000-memory.dmp

Filesize
20.9MB

Download
memory/1860-182-0x000000013FB00000-0x0000000140FDA000-memory.dmp

Filesize
20.9MB

Download
memory/2108-21-0x0000000000100000-0x0000000000118000-memory.dmp

Filesize
96KB

Download
memory/2508-116-0x000000013F8B0000-0x00000001404E0000-memory.dmp

Filesize
12.2MB

Download
memory/2956-22-0x0000000000120000-0x0000000000134000-memory.dmp

Filesize
80KB

Download