82d4c31b741a633f3eaaf8f6c361b99e5de14060d26457ac1be57bb0f8a1d3bf

Analysis

max time kernel
147s
max time network
151s
platform
windows7_x64
resource
win7-20230220-en
resource tags

arch:x64arch:x86image:win7-20230220-enlocale:en-usos:windows7-x64system
submitted
13-05-2023 20:34

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General

Target

bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe
Size

5.8MB
MD5

27124a76fe1a7d01090183e7eb646b0e
SHA1

9612c76890e70d63298e674601921cc3a9bbc00c
SHA256

bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776
SHA512

1e218f3b9acdc19dc9d915bbe0cf8afd4b4a0804f2a105aaf063a149cc78995a0948327b4086f6b97d35a213ae951a29e6a5bd91e5438b37585e54b8f6fbdda2
SSDEEP

98304:FuAXqhdxBaSbIzxiEXUfcZYU5XiG0Yq9VaEZns3VpUCpBx4Yfq8WwnwPNq3HZQ:0AWbNbIzxibcZYDFYXjHBq8WwC8Q

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1948	WinSec.exe

Loads dropped DLL 1 IoCs

pid	Process
1284	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\Microsoft\Windows\CurrentVersion\RunOnce	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce\wextract_cleanup0 = "rundll32.exe C:\\Windows\\system32\\advpack.dll,DelNodeRunDLL32 \"C:\\Users\\Admin\\AppData\\Local\\Temp\\IXP000.TMP\\\""	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3430344531-3702557399-3004411149-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Security Update = "C:\\Users\\Admin\\AppData\\Local\\Temp\\Windows Security Update\\WinSec.exe"	powershell.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
1412	powershell.exe
584	powershell.exe
1900	powershell.exe
1948	WinSec.exe
1100	powershell.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1412	powershell.exe
Token: SeDebugPrivilege	584	powershell.exe
Token: SeDebugPrivilege	1900	powershell.exe
Token: SeDebugPrivilege	1948	WinSec.exe
Token: SeDebugPrivilege	1100	powershell.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 1284 wrote to memory of 1948	1284	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe	28
PID 1284 wrote to memory of 1948	1284	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe	28
PID 1284 wrote to memory of 1948	1284	bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe	28
PID 1948 wrote to memory of 584	1948	WinSec.exe	29
PID 1948 wrote to memory of 584	1948	WinSec.exe	29
PID 1948 wrote to memory of 584	1948	WinSec.exe	29
PID 1948 wrote to memory of 1900	1948	WinSec.exe	31
PID 1948 wrote to memory of 1900	1948	WinSec.exe	31
PID 1948 wrote to memory of 1900	1948	WinSec.exe	31
PID 1948 wrote to memory of 1412	1948	WinSec.exe	32
PID 1948 wrote to memory of 1412	1948	WinSec.exe	32
PID 1948 wrote to memory of 1412	1948	WinSec.exe	32
PID 1948 wrote to memory of 1100	1948	WinSec.exe	35
PID 1948 wrote to memory of 1100	1948	WinSec.exe	35
PID 1948 wrote to memory of 1100	1948	WinSec.exe	35

C:\Users\Admin\AppData\Local\Temp\bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe
"C:\Users\Admin\AppData\Local\Temp\bb1e9db6d9b4b5a858987999a1c8b68ea3610382968c36771da27a6625eba776.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1284
- C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WinSec.exe
  C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WinSec.exe
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Set-MpPreference -PUAProtection 1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:584
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Add-MpPreference -ExclusionPath C:\
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1900
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell" Set-ItemProperty -Path 'HKLM:\\SOFTWARE\\Microsoft\\Windows Defender Security Center\\Notifications' -Name DisableNotifications -Value 1
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1412
- - C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
    "powershell.exe" Remove-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'Windows Security Update';New-ItemProperty -Path 'HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Run' -Name 'Windows Security Update' -Value '"C:\Users\Admin\AppData\Local\Temp\Windows Security Update\WinSec.exe"' -PropertyType 'String'
    3⤵
    - Adds Run key to start application
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1100

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WinSec.exe

Filesize
5.7MB

MD5
a419d5d9882f43143818df7122c684a1

SHA1
63a5ae4680d40c7c87d3b5b96317a8afbf42d071

SHA256
594fcf39f956a9e3c7563d0a5ba815ccba997568160008b82065474d62c1a9b7

SHA512
3d6fe541beffebb25c0bc5980a7b279c86d279b0ffbfcf5605535ec97be5b84ea6d7f0b7229fdb129dd6332e215c683e4853cf1306190489ef35f77580fea66a

Download Submit
C:\Users\Admin\AppData\Local\Temp\IXP000.TMP\WinSec.exe

Filesize
5.7MB

MD5
a419d5d9882f43143818df7122c684a1

SHA1
63a5ae4680d40c7c87d3b5b96317a8afbf42d071

SHA256
594fcf39f956a9e3c7563d0a5ba815ccba997568160008b82065474d62c1a9b7

SHA512
3d6fe541beffebb25c0bc5980a7b279c86d279b0ffbfcf5605535ec97be5b84ea6d7f0b7229fdb129dd6332e215c683e4853cf1306190489ef35f77580fea66a

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
fc0aa65574fa6c4c63b392922bb7847f

SHA1
263ea85e043fc294590e835676699f1dfe338945

SHA256
6ac94c078000a32a8b6531f8f005586ddc1934c0d78c2bf9da5348fdfd5f076d

SHA512
43ea96d8d5a57463fc88aa2b7f38703318efd63667b6260521634ccb7257ad4fd5052ef56552da8e528ecf9f3d51712506cceb681611b4c04c4758b54f2d8b9d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
fc0aa65574fa6c4c63b392922bb7847f

SHA1
263ea85e043fc294590e835676699f1dfe338945

SHA256
6ac94c078000a32a8b6531f8f005586ddc1934c0d78c2bf9da5348fdfd5f076d

SHA512
43ea96d8d5a57463fc88aa2b7f38703318efd63667b6260521634ccb7257ad4fd5052ef56552da8e528ecf9f3d51712506cceb681611b4c04c4758b54f2d8b9d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\590aee7bdd69b59b.customDestinations-ms

Filesize
7KB

MD5
fc0aa65574fa6c4c63b392922bb7847f

SHA1
263ea85e043fc294590e835676699f1dfe338945

SHA256
6ac94c078000a32a8b6531f8f005586ddc1934c0d78c2bf9da5348fdfd5f076d

SHA512
43ea96d8d5a57463fc88aa2b7f38703318efd63667b6260521634ccb7257ad4fd5052ef56552da8e528ecf9f3d51712506cceb681611b4c04c4758b54f2d8b9d

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\H5OJ4QDZH49BF84I9UHA.temp

Filesize
7KB

MD5
fc0aa65574fa6c4c63b392922bb7847f

SHA1
263ea85e043fc294590e835676699f1dfe338945

SHA256
6ac94c078000a32a8b6531f8f005586ddc1934c0d78c2bf9da5348fdfd5f076d

SHA512
43ea96d8d5a57463fc88aa2b7f38703318efd63667b6260521634ccb7257ad4fd5052ef56552da8e528ecf9f3d51712506cceb681611b4c04c4758b54f2d8b9d

Download Submit
\Users\Admin\AppData\Local\Temp\IXP000.TMP\WinSec.exe

Filesize
5.7MB

MD5
a419d5d9882f43143818df7122c684a1

SHA1
63a5ae4680d40c7c87d3b5b96317a8afbf42d071

SHA256
594fcf39f956a9e3c7563d0a5ba815ccba997568160008b82065474d62c1a9b7

SHA512
3d6fe541beffebb25c0bc5980a7b279c86d279b0ffbfcf5605535ec97be5b84ea6d7f0b7229fdb129dd6332e215c683e4853cf1306190489ef35f77580fea66a

Download Submit
memory/584-79-0x0000000002714000-0x0000000002717000-memory.dmp

Filesize
12KB

Download
memory/584-81-0x000000000271B000-0x0000000002752000-memory.dmp

Filesize
220KB

Download
memory/1100-95-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/1100-94-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/1100-97-0x000000000271B000-0x0000000002752000-memory.dmp

Filesize
220KB

Download
memory/1100-96-0x0000000002710000-0x0000000002790000-memory.dmp

Filesize
512KB

Download
memory/1100-91-0x000000001B380000-0x000000001B662000-memory.dmp

Filesize
2.9MB

Download
memory/1100-92-0x0000000002460000-0x0000000002468000-memory.dmp

Filesize
32KB

Download
memory/1412-83-0x00000000025EB000-0x0000000002622000-memory.dmp

Filesize
220KB

Download
memory/1412-78-0x0000000001E50000-0x0000000001E58000-memory.dmp

Filesize
32KB

Download
memory/1412-80-0x00000000025E4000-0x00000000025E7000-memory.dmp

Filesize
12KB

Download
memory/1900-82-0x0000000002934000-0x0000000002937000-memory.dmp

Filesize
12KB

Download
memory/1900-84-0x000000000293B000-0x0000000002972000-memory.dmp

Filesize
220KB

Download
memory/1900-77-0x000000001B2D0000-0x000000001B5B2000-memory.dmp

Filesize
2.9MB

Download
memory/1948-62-0x0000000000D20000-0x00000000012CE000-memory.dmp

Filesize
5.7MB

Download
memory/1948-93-0x000000001C1E0000-0x000000001C260000-memory.dmp

Filesize
512KB

Download
memory/1948-98-0x000000001C1E0000-0x000000001C260000-memory.dmp

Filesize
512KB

Download