asyncrat | 7e129f68ebb1e8730941dcf50344e256bd0e32f29cac0e641426b88a17e131c6

General

Target

7e129f68ebb1e8730941dcf50344e256bd0e32f29cac0e641426b88a17e131c6.ps1
Size

1KB
MD5

0cdc732f0ded614eb23c08213bcf1e04
SHA1

0cbca39b7b1a0ec9b930c38c1c60d50feed74ee3
SHA256

7e129f68ebb1e8730941dcf50344e256bd0e32f29cac0e641426b88a17e131c6
SHA512

86c92258d18f25c97215c68cd4ef09b0c1433ea9de27c00247537ea8a7c187d4428b1cb151c785d5544f17da8ba9b138ef59efd3c7f7546240bf7ae5a5b29eb7

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/1352-28-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	4940	powershell.exe

Downloads MZ/PE file
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 4940 set thread context of 1352	4940	powershell.exe	89

Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
4940	powershell.exe

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 7 IoCs

pid	Process
4940	powershell.exe
4940	powershell.exe
4940	powershell.exe
4940	powershell.exe
1352	RegAsm.exe
1352	RegAsm.exe
1352	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4940	powershell.exe
Token: SeDebugPrivilege	1352	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1352	RegAsm.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 4940 wrote to memory of 4348	4940	powershell.exe	86
PID 4940 wrote to memory of 4348	4940	powershell.exe	86
PID 4348 wrote to memory of 3848	4348	csc.exe	87
PID 4348 wrote to memory of 3848	4348	csc.exe	87
PID 4940 wrote to memory of 1460	4940	powershell.exe	88
PID 4940 wrote to memory of 1460	4940	powershell.exe	88
PID 4940 wrote to memory of 1460	4940	powershell.exe	88
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89
PID 4940 wrote to memory of 1352	4940	powershell.exe	89

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\7e129f68ebb1e8730941dcf50344e256bd0e32f29cac0e641426b88a17e131c6.ps1
1⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Command and Scripting Interpreter: PowerShell
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940
- 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\z3etidzu\z3etidzu.cmdline"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:4348
- - 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\RESC2E2.tmp" "c:\Users\Admin\AppData\Local\Temp\z3etidzu\CSCA506FCA84C34AB695C1F45839692167.TMP"
    3⤵
    PID:3848
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  PID:1460
- C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
  "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  PID:1352

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

PowerShell

1

T1059.001

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\RESC2E2.tmp

Filesize
1KB

MD5
cfe593bc727a09ab9913455a919e6797

SHA1
a7fac16170da337c1e790c2269e6814e5149db0b

SHA256
50e6626c0a7e5fd47bb8e63a8ab9b99882b2295ad1f62e7f1d0fd44c7f348833

SHA512
33abbc545678d4536e9f0eccaed466eea20d186d28cf807e8c5da09b118192624ef2274b330b4b99f75581738c1655e09940f2b8b2f8ffa2d0f747eeaa38143a

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_pjpwctmz.h5q.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\z3etidzu\z3etidzu.dll

Filesize
9KB

MD5
667e31033247bf4d6521de6d71a5a910

SHA1
d6498068fae45f2bb423d7254e7b47a9b02f8d31

SHA256
b7face27eebfed0c8e24e4807450b30ddd512238ad862411e02927318fcbdbc8

SHA512
44217507d7f589288854ff405162e0fdbc38edb64755c4e6d6160ea08cad80d3baa22fceb7a4d3ecda8d71ed90c9235753b24ec3f1fb2dc53ef262b2e7dd2b76

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z3etidzu\CSCA506FCA84C34AB695C1F45839692167.TMP

Filesize
652B

MD5
2157e68c1221cf7f186822cb18d7733e

SHA1
9321d33807d6cdb800d004aa1ffcbafd22bde3fb

SHA256
60be87098c688c2ce830786e7713809737e6e9d76ad5f1afe98b6abd8c7575ab

SHA512
667e12531facfe918edb0689123130125c7d9fece8dfbdbea3c0f4aef72187df530d5c5d05bfaffef8009e431035914e54cb6baddb578913e65cceed4c333242

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z3etidzu\z3etidzu.0.cs

Filesize
10KB

MD5
b5c3a2d03ff4c721192716f326c77dea

SHA1
6b754fd988ca58865674b711aba76d3c6b2c5693

SHA256
ab42fe5fd08cb87663e130f99f96124fdd37d825d081b9712b0bad8b6f270fac

SHA512
d32e5a98c12b6b85d1913555ea54f837cd0fc647ca945aef9d75ffade06506be1f4a2348827f11c4eeae0796e4156c8f352e3c0f9a6e2cdc93cb501bcdf2c248

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\z3etidzu\z3etidzu.cmdline

Filesize
204B

MD5
09b6e070c292e3804264c25ca35446d0

SHA1
3a132de62d155d09d777f1f6c0c2a044e490bb35

SHA256
1fd3cb7323401546463f08ab7967aaa73dfc78b9c35157aa20ec0c65db9260b5

SHA512
64777fc5a51022546c5922b29bb53650bbe993b4ac09ab56ab69f178d622417d474a56545bc8815718d587282f31cd9b29666f2fd068d30f20c1f3a7c1acba47

Download Submit
memory/1352-33-0x0000000005570000-0x0000000005602000-memory.dmp

Filesize
584KB

Download
memory/1352-32-0x0000000005770000-0x0000000005D14000-memory.dmp

Filesize
5.6MB

Download
memory/1352-38-0x0000000006880000-0x0000000006BD4000-memory.dmp

Filesize
3.3MB

Download
memory/1352-37-0x0000000006850000-0x0000000006872000-memory.dmp

Filesize
136KB

Download
memory/1352-36-0x00000000062E0000-0x0000000006346000-memory.dmp

Filesize
408KB

Download
memory/1352-35-0x0000000006240000-0x00000000062DC000-memory.dmp

Filesize
624KB

Download
memory/1352-28-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/1352-34-0x0000000005500000-0x000000000550A000-memory.dmp

Filesize
40KB

Download
memory/4940-11-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-0-0x00007FFCB63E3000-0x00007FFCB63E5000-memory.dmp

Filesize
8KB

Download
memory/4940-31-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download
memory/4940-1-0x0000029A503B0000-0x0000029A503D2000-memory.dmp

Filesize
136KB

Download
memory/4940-13-0x0000029A503A0000-0x0000029A503B0000-memory.dmp

Filesize
64KB

Download
memory/4940-26-0x0000029A50820000-0x0000029A50828000-memory.dmp

Filesize
32KB

Download
memory/4940-12-0x00007FFCB63E0000-0x00007FFCB6EA1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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