asyncrat | ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72

Analysis

max time kernel
60s
max time network
60s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
28/03/2025, 00:49

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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/0x0009000000017492-19.dat	family_asyncrat

Executes dropped EXE 5 IoCs

pid	Process
2348	runtime.exe
2116	svchost.exe
2960	loader.exe
1428	loader.exe
2720	svchost.exe

Loads dropped DLL 5 IoCs

pid	Process
1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
2960	loader.exe
1428	loader.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Legitimate hosting services abused for malware hosting/C2 1 TTPs 2 IoCs

Web Service

T1102

flow	ioc
5	pastebin.com
4	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
1712	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
1036	schtasks.exe

Suspicious behavior: EnumeratesProcesses 17 IoCs

pid	Process
1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe
2940	powershell.exe
2116	svchost.exe
2116	svchost.exe
2116	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe
2720	svchost.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2940	powershell.exe
Token: SeDebugPrivilege	2116	svchost.exe
Token: SeDebugPrivilege	2116	svchost.exe
Token: SeDebugPrivilege	2720	svchost.exe
Token: SeDebugPrivilege	2720	svchost.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2720	svchost.exe

Suspicious use of WriteProcessMemory 37 IoCs

description	pid	Process	procid_target
PID 1936 wrote to memory of 2940	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1936 wrote to memory of 2940	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1936 wrote to memory of 2940	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1936 wrote to memory of 2940	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	30
PID 1936 wrote to memory of 2348	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1936 wrote to memory of 2348	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1936 wrote to memory of 2348	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1936 wrote to memory of 2348	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	31
PID 1936 wrote to memory of 2116	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	33
PID 1936 wrote to memory of 2116	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	33
PID 1936 wrote to memory of 2116	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	33
PID 1936 wrote to memory of 2116	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	33
PID 1936 wrote to memory of 2960	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	34
PID 1936 wrote to memory of 2960	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	34
PID 1936 wrote to memory of 2960	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	34
PID 1936 wrote to memory of 2960	1936	ad091aff1603773230aa3ec020c30c96bf53e36baaf128c5056bc06d8254ca72.exe	34
PID 2348 wrote to memory of 2840	2348	runtime.exe	35
PID 2348 wrote to memory of 2840	2348	runtime.exe	35
PID 2348 wrote to memory of 2840	2348	runtime.exe	35
PID 2960 wrote to memory of 1428	2960	loader.exe	36
PID 2960 wrote to memory of 1428	2960	loader.exe	36
PID 2960 wrote to memory of 1428	2960	loader.exe	36
PID 2116 wrote to memory of 1780	2116	svchost.exe	37
PID 2116 wrote to memory of 1780	2116	svchost.exe	37
PID 2116 wrote to memory of 1780	2116	svchost.exe	37
PID 2116 wrote to memory of 2448	2116	svchost.exe	39
PID 2116 wrote to memory of 2448	2116	svchost.exe	39
PID 2116 wrote to memory of 2448	2116	svchost.exe	39
PID 1780 wrote to memory of 1036	1780	cmd.exe	41
PID 1780 wrote to memory of 1036	1780	cmd.exe	41
PID 1780 wrote to memory of 1036	1780	cmd.exe	41
PID 2448 wrote to memory of 1712	2448	cmd.exe	42
PID 2448 wrote to memory of 1712	2448	cmd.exe	42
PID 2448 wrote to memory of 1712	2448	cmd.exe	42
PID 2448 wrote to memory of 2720	2448	cmd.exe	43
PID 2448 wrote to memory of 2720	2448	cmd.exe	43
PID 2448 wrote to memory of 2720	2448	cmd.exe	43

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:1936
- 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:2940
- 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:2348
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 2348 -s 528
    3⤵
    PID:2840
- 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:2116
- - 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:1780
  - - 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:1036
- - C:\Windows\system32\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\tmpBA69.tmp.bat""
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2448
  - - C:\Windows\system32\timeout.exe
      timeout 3
      4⤵
      Delays execution with timeout.exe
      PID:1712
  - - 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:2720
- 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:2960
- - C:\Users\Admin\AppData\Local\Temp\onefile_2960_133875965690114000\loader.exe
    C:\Users\Admin\AppData\Local\Temp\loader.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    PID:1428

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\LocalLow\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015

Filesize
71KB

MD5
83142242e97b8953c386f988aa694e4a

SHA1
833ed12fc15b356136dcdd27c61a50f59c5c7d50

SHA256
d72761e1a334a754ce8250e3af7ea4bf25301040929fd88cf9e50b4a9197d755

SHA512
bb6da177bd16d163f377d9b4c63f6d535804137887684c113cc2f643ceab4f34338c06b5a29213c23d375e95d22ef417eac928822dfb3688ce9e2de9d5242d10

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarEA56.tmp

Filesize
183KB

MD5
109cab5505f5e065b63d01361467a83b

SHA1
4ed78955b9272a9ed689b51bf2bf4a86a25e53fc

SHA256
ea6b7f51e85835c09259d9475a7d246c3e764ad67c449673f9dc97172c351673

SHA512
753a6da5d6889dd52f40208e37f2b8c185805ef81148682b269fff5aa84a46d710fe0ebfe05bce625da2e801e1c26745998a41266fa36bf47bc088a224d730cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\onefile_2960_133875965690114000\loader.exe

Filesize
12.0MB

MD5
d40e357c84cda7eb31419a69ae038d97

SHA1
853d03a0cfe3aa0f21d16b2da378e4554c71a088

SHA256
45215606ecea7c6d2624d05ee6b0703beb9d0abdf42566c77ccb89576338b8c6

SHA512
82a67c7be3fef7d4deb4d1c1e85d392fdfb16e830f9574868c8bcc42aa3eb8a3435b0d3d0786a1015af8f8b41f66074a1825a24eb559e42b164aca71ee3dca2f

Download Submit
C:\Users\Admin\AppData\Local\Temp\onefile_2960_133875965690114000\python311.dll

Filesize
5.5MB

MD5
9a24c8c35e4ac4b1597124c1dcbebe0f

SHA1
f59782a4923a30118b97e01a7f8db69b92d8382a

SHA256
a0cf640e756875c25c12b4a38ba5f2772e8e512036e2ac59eb8567bf05ffbfb7

SHA512
9d9336bf1f0d3bc9ce4a636a5f4e52c5f9487f51f00614fc4a34854a315ce7ea8be328153812dbd67c45c75001818fa63317eba15a6c9a024fa9f2cab163165b

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

Filesize
74KB

MD5
85f89a5f5806117cc82aec6e1f89cd13

SHA1
735d2331d6bc90498f3f1405af0dffa37b136e5d

SHA256
adbce5e454bbc8b27c4ac87f70dee8d622395b541736d6f0af027dd94e454cb7

SHA512
038c96c575f0a1204a4159cd7ac9262f7e1447be9bba28278ddcdd6294280f40399cfb06a89e40460114306c9b5a33d466ac2de7af58575b80cad0921f4a979d

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpBA69.tmp.bat

Filesize
151B

MD5
51f2b7087967746a176734e4231ea70f

SHA1
a8deba94ec8967cd41a688ef9696847575a5332d

SHA256
26180a392c452121660d05a1129e884aba39286abce44cf1047c0945aaccce4b

SHA512
921bc997bfe7d209960bd01c7bf3cc57036b2830bc0af7d3e194cfaf460a632cf1c8974a09db5fd3aaff4f75b3007cfe5eb56353002ca0c2b2003cdf51ea5dd5

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\loader.exe

Filesize
20.7MB

MD5
4ed0d5143664ce4d6a25072f1c465616

SHA1
e560ecd9fe3a6754d72493d9e0e796e3837be5df

SHA256
ac9bb0231e3e3e4305a2cf44708dbf7e0e6cfa286faac9bc687c364a4070e398

SHA512
d763f44d7a5bff11a3a75c7b4182362ad63d33618402480aa3c993b1ed8f21dfda0e70cf25e71e33ffac5f9ca541fa0a3c96c53abb510fc36a5917373528f466

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

Filesize
58KB

MD5
1ab99ff9dfb2017db1a59403f5ca1c2b

SHA1
4e43875075d8dd21755aa8dd91365d561be43594

SHA256
bd9f8e352f172f3a5ad106388d1fd67ed09f419f1d100bd89e7980e25d273526

SHA512
44bb3c86caa4b2c0c63251d602f03aa5a38d099ece58462dc78d38740981733b731711250b34db2a93c8b2a1fab7e707e29ee010b24129d762daed226d72ca4a

Download Submit
memory/1428-111-0x000000013F310000-0x000000013FF40000-memory.dmp

Filesize
12.2MB

Download
memory/1936-51-0x00000000018D2000-0x0000000001DBF000-memory.dmp

Filesize
4.9MB

Download
memory/1936-50-0x0000000000400000-0x0000000003BE0000-memory.dmp

Filesize
55.9MB

Download
memory/1936-8-0x0000000000400000-0x0000000003BE0000-memory.dmp

Filesize
55.9MB

Download
memory/1936-7-0x00000000018D2000-0x0000000001DBF000-memory.dmp

Filesize
4.9MB

Download
memory/1936-0-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1936-2-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/1936-4-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download
memory/2116-25-0x00000000010C0000-0x00000000010D8000-memory.dmp

Filesize
96KB

Download
memory/2348-24-0x00000000003C0000-0x00000000003D4000-memory.dmp

Filesize
80KB

Download
memory/2720-179-0x0000000001040000-0x0000000001058000-memory.dmp

Filesize
96KB

Download
memory/2960-175-0x000000013FCD0000-0x00000001411AA000-memory.dmp

Filesize
20.9MB

Download