19e5abfc57e4969d264f332ccfd5d3f66fd288169e96acf40b6268f8e224ba77

Resubmissions

01/02/2025, 07:14

250201-h2xtnawjcq 10

01/02/2025, 06:19

250201-g3g9xsvlap 10

Analysis

max time kernel
223s
max time network
219s
platform
windows10-ltsc 2021_x64
resource
win10ltsc2021-20250128-en
resource tags

arch:x64arch:x86image:win10ltsc2021-20250128-enlocale:en-usos:windows10-ltsc 2021-x64system
submitted
01/02/2025, 07:14

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General

Target

ka.exe
Size

1.3MB
MD5

2e0827867a5d6d443f13b5734bb34f25
SHA1

abc9c26b88bf37571dcb342a89d6c185dab72062
SHA256

19e5abfc57e4969d264f332ccfd5d3f66fd288169e96acf40b6268f8e224ba77
SHA512

0d07a3ad39f143688d032088b970c199cf8015622c75290191c2370c5721204d545ac214cca56d2cf532e61f2550d15606cd389e0457e7480866f4df6f320967
SSDEEP

24576:WXT4A/dXgFI65Ux5PYgMBLVYyLJDI8kz5/gtY6v/87xaVUhffpE0vwYBb:WXMA1XgF06gGLVYuJDI8kz5YtY6WhfW6

Score

8^/10

defense_evasion execution persistence

Malware Config

Signatures

Command and Scripting Interpreter: PowerShell 1 TTPs 10 IoCs

Run Powershell and hide display window.

execution

PowerShell

T1059.001

pid	Process
356	powershell.exe
756	powershell.exe
3512	powershell.exe
4056	powershell.exe
3812	powershell.exe
4816	powershell.exe
972	powershell.exe
3768	powershell.exe
1152	powershell.exe
1424	powershell.exe

Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Drops file in Drivers directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\System32\drivers\etc\hosts	ka.exe
File opened for modification	C:\Windows\System32\drivers\etc\hosts	ka.exe

Stops running service(s) 4 TTPs
defense_evasion execution

Windows Service
T1543.003

Impair Defenses
T1562

Service Stop
T1489

Service Execution
T1569.002

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WsHosts = "C:\\Windows\\WindowsUpdate\\wshosts.exe"	ka.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WsHosts = "C:\\Windows\\WindowsUpdate\\wshosts.exe"	ka.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\WindowsUpdate\wshosts.exe	ka.exe
File created	C:\Windows\WindowsUpdate\wshosts.exe	ka.exe

Launches sc.exe 4 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4064	sc.exe
3204	sc.exe
2076	sc.exe
3660	sc.exe

Suspicious behavior: EnumeratesProcesses 12 IoCs

pid	Process
356	powershell.exe
3768	powershell.exe
356	powershell.exe
1152	powershell.exe
1424	powershell.exe
3512	powershell.exe
756	powershell.exe
4056	powershell.exe
756	powershell.exe
3812	powershell.exe
4816	powershell.exe
972	powershell.exe

Suspicious use of AdjustPrivilegeToken 10 IoCs

description	pid	Process
Token: SeDebugPrivilege	356	powershell.exe
Token: SeDebugPrivilege	3768	powershell.exe
Token: SeDebugPrivilege	1152	powershell.exe
Token: SeDebugPrivilege	1424	powershell.exe
Token: SeDebugPrivilege	3512	powershell.exe
Token: SeDebugPrivilege	756	powershell.exe
Token: SeDebugPrivilege	4056	powershell.exe
Token: SeDebugPrivilege	3812	powershell.exe
Token: SeDebugPrivilege	4816	powershell.exe
Token: SeDebugPrivilege	972	powershell.exe

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 228 wrote to memory of 356	228	ka.exe	80
PID 228 wrote to memory of 356	228	ka.exe	80
PID 228 wrote to memory of 3204	228	ka.exe	81
PID 228 wrote to memory of 3204	228	ka.exe	81
PID 228 wrote to memory of 3768	228	ka.exe	82
PID 228 wrote to memory of 3768	228	ka.exe	82
PID 228 wrote to memory of 1152	228	ka.exe	83
PID 228 wrote to memory of 1152	228	ka.exe	83
PID 228 wrote to memory of 1424	228	ka.exe	84
PID 228 wrote to memory of 1424	228	ka.exe	84
PID 228 wrote to memory of 3512	228	ka.exe	85
PID 228 wrote to memory of 3512	228	ka.exe	85
PID 228 wrote to memory of 2076	228	ka.exe	86
PID 228 wrote to memory of 2076	228	ka.exe	86
PID 1960 wrote to memory of 3652	1960	cmd.exe	101
PID 1960 wrote to memory of 3652	1960	cmd.exe	101
PID 3652 wrote to memory of 756	3652	ka.exe	102
PID 3652 wrote to memory of 756	3652	ka.exe	102
PID 3652 wrote to memory of 3660	3652	ka.exe	103
PID 3652 wrote to memory of 3660	3652	ka.exe	103
PID 3652 wrote to memory of 4056	3652	ka.exe	104
PID 3652 wrote to memory of 4056	3652	ka.exe	104
PID 3652 wrote to memory of 3812	3652	ka.exe	105
PID 3652 wrote to memory of 3812	3652	ka.exe	105
PID 3652 wrote to memory of 4816	3652	ka.exe	106
PID 3652 wrote to memory of 4816	3652	ka.exe	106
PID 3652 wrote to memory of 972	3652	ka.exe	107
PID 3652 wrote to memory of 972	3652	ka.exe	107
PID 3652 wrote to memory of 4064	3652	ka.exe	108
PID 3652 wrote to memory of 4064	3652	ka.exe	108

C:\Users\Admin\AppData\Local\Temp\ka.exe
"C:\Users\Admin\AppData\Local\Temp\ka.exe"
1⤵
- Drops file in Drivers directory
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:228
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" "-WindowStyle Hidden -ExecutionPolicy Bypass -File \"C:\Windows\WindowsUpdate\557950\st.ps1\""
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:356
- C:\Windows\system32\sc.exe
  "sc" create WsHosts "binPath= \"C:\Users\Admin\AppData\Local\Temp\ka.exe\"" "start= auto"
  2⤵
  - Launches sc.exe
  PID:3204
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\temp.ps1"
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3768
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\svhosts.ps1
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1152
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\WindowsUpdate.ps1
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1424
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\wins32bugfix.ps1
  2⤵
  - Command and Scripting Interpreter: PowerShell
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:3512
- C:\Windows\system32\sc.exe
  "sc" delete WsHosts
  2⤵
  - Launches sc.exe
  PID:2076

C:\Windows\System32\rundll32.exe
C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
1⤵
PID:2196

C:\Windows\System32\cmd.exe
"C:\Windows\System32\cmd.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1960
- C:\Users\Admin\AppData\Local\Temp\ka.exe
  C:\Users\Admin\AppData\Local\Temp\ka.exe
  2⤵
  - Drops file in Drivers directory
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of WriteProcessMemory
  PID:3652
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" "-WindowStyle Hidden -ExecutionPolicy Bypass -File \"C:\Windows\WindowsUpdate\155944\st.ps1\""
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:756
- - C:\Windows\system32\sc.exe
    "sc" create WsHosts "binPath= \"C:\Users\Admin\AppData\Local\Temp\ka.exe\"" "start= auto"
    3⤵
    - Launches sc.exe
    PID:3660
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\temp.ps1"
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4056
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\svhosts.ps1
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3812
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\WindowsUpdate.ps1
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:4816
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" -ExecutionPolicy Bypass -File C:\Windows\System32\wins32bugfix.ps1
    3⤵
    - Command and Scripting Interpreter: PowerShell
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:972
- - C:\Windows\system32\sc.exe
    "sc" delete WsHosts
    3⤵
    - Launches sc.exe
    PID:4064

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

T1059

PowerShell

T1059.001

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Service Stop

T1489

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log

Filesize
1KB

MD5
a94e0a262fe8ab5c0ec0872d36fcbd48

SHA1
877a5ed6269746fe8827f715ef95136ea81c5374

SHA256
4e689eb0bbeab4759a79c590a4d06d520a12974cf6cb79753832a5582a1ff0c9

SHA512
92a1ebcb2e4e4279e6cb0ff9407ba363ecb27c47b8cd4441655d9ecf811b990d066856f4738f23f8d9b12d1f3d0de75ef6a101fed056f5392e7140111550ca54

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
ad1581c64934c8b00a5c4f9a3685a2b5

SHA1
6b178e817d878eab54441c9852d88c0ea63be414

SHA256
b9e99eba07099c0847b2a56f5eb65b243b6af79a279f20204a8c5febe9a2ccfb

SHA512
1569b36aff2b88f23049463075c351a6afcc10bee1e62d996e18251b4efa4c8e8a37be7e63c7a057c971b7bc529620f87985c2c6bb89e2d459e52673b5baabec

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
64B

MD5
446dd1cf97eaba21cf14d03aebc79f27

SHA1
36e4cc7367e0c7b40f4a8ace272941ea46373799

SHA256
a7de5177c68a64bd48b36d49e2853799f4ebcfa8e4761f7cc472f333dc5f65cf

SHA512
a6d754709f30b122112ae30e5ab22486393c5021d33da4d1304c061863d2e1e79e8aeb029cae61261bb77d0e7becd53a7b0106d6ea4368b4c302464e3d941cf7

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive

Filesize
944B

MD5
bc8de92886bf66a25e19b2e14871ace4

SHA1
15339ed715170ed5dacbefe6ceb1c7cc68c95a34

SHA256
0ebfe31c9689d5eeb4c74ee168f59c820bea93f313ba31fcbbeef18cffe4ab8d

SHA512
7244e93e273e5f7b25e4a56378bb49c11fbffbdf97d150e218b4df8fdbcc46890726cec01a029378a6a1076c282c6a2fadfc7df4c2c792228cd70d2ea2370a55

Download Submit
C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_lnv15i5x.2is.ps1

Filesize
60B

MD5
d17fe0a3f47be24a6453e9ef58c94641

SHA1
6ab83620379fc69f80c0242105ddffd7d98d5d9d

SHA256
96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7

SHA512
5b592e58f26c264604f98f6aa12860758ce606d1c63220736cf0c779e4e18e3cec8706930a16c38b20161754d1017d1657d35258e58ca22b18f5b232880dec82

Download Submit
C:\Windows\System32\drivers\etc\hosts

Filesize
2KB

MD5
dec29dcc5fba036816e7fe130a30af9e

SHA1
91796cf55a57676dcaeb2564984ca0b6b9ccc8f6

SHA256
1b8b2924aa7d00598a11c437f2c43e8deb9b138249e15b7ac6783baf810ecdcd

SHA512
833ae7d1af9926706023c8a942e2e8dd51d022dbcf14b59e7f8cfad02174323fde9f95a355b61982050068731584f267704ae4324d5901981e1d53d2019fc3fc

Download Submit
memory/228-81-0x00007FF710A80000-0x00007FF710B76000-memory.dmp

Filesize
984KB

Download
memory/356-27-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/356-35-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/356-34-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/356-51-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/356-6-0x00007FFAEFEB3000-0x00007FFAEFEB5000-memory.dmp

Filesize
8KB

Download
memory/356-26-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/3652-155-0x00007FF710A80000-0x00007FF710B76000-memory.dmp

Filesize
984KB

Download
memory/3768-32-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/3768-82-0x00007FFAEFEB0000-0x00007FFAF0972000-memory.dmp

Filesize
10.8MB

Download
memory/3768-24-0x000002836ACB0000-0x000002836ACD2000-memory.dmp

Filesize
136KB

Download