14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e

Analysis

max time kernel
24s
max time network
116s
platform
windows10_x64
resource
win10v20201028
submitted
15-02-2021 10:18

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General

Target

updatewin1.exe
Size

272KB
MD5

5b4bd24d6240f467bfbc74803c9f15b0
SHA1

c17f98c182d299845c54069872e8137645768a1a
SHA256

14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e
SHA512

a896acc38a6ff9641b0803f0598369c0d4fa8e38da28c1653c57948fe5e3274880d1b2e7959cd1b1da43375a1318b3ba72e13240bf40b27c852ee72bbb16cadc

Score

10^/10

evasion

Malware Config

Signatures

Deletes Windows Defender Definitions 2 TTPs 1 IoCs

Uses mpcmdrun utility to delete all AV definitions.

evasion

Impair Defenses

T1562

Command-Line Interface

T1059

Processes:

mpcmdrun.exe

pid	Process
4064	mpcmdrun.exe

Disables Task Manager via registry modification
evasion
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid	Process
3764	powershell.exe
3764	powershell.exe
3764	powershell.exe
3764	powershell.exe
2176	powershell.exe
2176	powershell.exe
2176	powershell.exe
184	powershell.exe
184	powershell.exe
184	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	3764	powershell.exe
Token: SeDebugPrivilege	2176	powershell.exe
Token: SeDebugPrivilege	184	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

updatewin1.exeupdatewin1.exepowershell.exe

description	pid	Process	procid_target
PID 984 wrote to memory of 3148	984	updatewin1.exe	78
PID 984 wrote to memory of 3148	984	updatewin1.exe	78
PID 984 wrote to memory of 3148	984	updatewin1.exe	78
PID 3148 wrote to memory of 3764	3148	updatewin1.exe	80
PID 3148 wrote to memory of 3764	3148	updatewin1.exe	80
PID 3148 wrote to memory of 3764	3148	updatewin1.exe	80
PID 3148 wrote to memory of 2176	3148	updatewin1.exe	82
PID 3148 wrote to memory of 2176	3148	updatewin1.exe	82
PID 3148 wrote to memory of 2176	3148	updatewin1.exe	82
PID 2176 wrote to memory of 184	2176	powershell.exe	84
PID 2176 wrote to memory of 184	2176	powershell.exe	84
PID 2176 wrote to memory of 184	2176	powershell.exe	84
PID 3148 wrote to memory of 4064	3148	updatewin1.exe	86
PID 3148 wrote to memory of 4064	3148	updatewin1.exe	86
PID 3148 wrote to memory of 496	3148	updatewin1.exe	88
PID 3148 wrote to memory of 496	3148	updatewin1.exe	88
PID 3148 wrote to memory of 496	3148	updatewin1.exe	88

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:984
- C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
  "C:\Users\Admin\AppData\Local\Temp\updatewin1.exe" --Admin
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3148
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:3764
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -NoProfile -ExecutionPolicy Bypass -Command "& {Start-Process PowerShell -ArgumentList '-NoProfile -ExecutionPolicy Bypass -File ""C:\Users\Admin\AppData\Local\script.ps1""' -Verb RunAs}"
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:2176
  - - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
      "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -ExecutionPolicy Bypass -File "C:\Users\Admin\AppData\Local\script.ps1
      4⤵
      Suspicious behavior: EnumeratesProcesses
      Suspicious use of AdjustPrivilegeToken
      PID:184
- - C:\Program Files\Windows Defender\mpcmdrun.exe
    "C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
    3⤵
    - Deletes Windows Defender Definitions
    PID:4064
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
    3⤵
    PID:496

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Privilege Escalation

Defense Evasion

Impair Defenses

T1562

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log

MD5
754b6ffa8df1820bd62569a2000dd9cb

SHA1
528b0ee7663f1c2775bf0f53f3a2e4952b1f1434

SHA256
5d63e5bc4a684f11d634ba81510cfd0d3ad65b5cc0ca48066dd51299fe3bf817

SHA512
2233dece7f8b2a3589be9d703b254ca1381c0d3601ebee2dc8816e15047cf48cb1ffde03b23c43bc56a88e7edd1787661aa179c0a55e139e75982c6f05f0ee7c

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

MD5
0a6d844e90eb3a5352852cf5e94f23c0

SHA1
895d7059820793000a397269a2f21befd0396ee6

SHA256
336da27ab7139dc3f4dc118f3ab54d8a494dd52c8a7f89afb002fd0677d95beb

SHA512
3eabcb72e6105310d8055d06ddac4c7fc8060b94e670dcd48fbbf3320277c3aa133c0ab45349979157e6c567efebf2a816e4f0c16a0a84e4ae35cab18eeeff62

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

MD5
6e0a0f5a6deb9703a59a7736045abc8d

SHA1
27aa1032ee2c83f56352b6470b85b9bfedf9cc53

SHA256
1dd96efa94b0fe80f1ccbf617bfba116a941ace673ef7f1bdd8fce18784c5584

SHA512
864ae3aa3d36c68dacc88ef17b87e5f5862e821ef1db67736a833b4a98a0d63f3896da208f8c3de5bc114040718909ff23f94b201d0b111631a05033c23bcb88

Download Submit
C:\Users\Admin\AppData\Local\Temp\delself.bat

MD5
9e5ded39abd73456458318c691bbd679

SHA1
0b111626c3687fbd3f647b01fa27d26c88c4583d

SHA256
2c4cad4d2fa2df8c8a61085b6ecc91215486fbb5d8e643eec889fc5709a5813f

SHA512
564c2319b34847b605c1a73db2427ad29d52579cc22cece04c327040b7a9a77591cc6e2dfffa825e70a4534451e70b80e04c01a0b9a3b12c0b96c594bb9c07e4

Download Submit
C:\Users\Admin\AppData\Local\script.ps1

MD5
f972c62f986b5ed49ad7713d93bf6c9f

SHA1
4e157002bdb97e9526ab97bfafbf7c67e1d1efbf

SHA256
b47f85974a7ec2fd5aa82d52f08eb0f6cea7e596a98dd29e8b85b5c37beca0a8

SHA512
2c9e2e1b8b6cb5ffe3edf5dfbc2c3b917cd15ba6a5e5264207a43b02ce7020f44f5088aca195f7b428699f0d6bd693ce557a0227d67bbb4795e350a97314e9c4

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memory/184-70-0x0000000006D82000-0x0000000006D83000-memory.dmp

Filesize
4KB

Download
memory/184-64-0x0000000007C50000-0x0000000007C51000-memory.dmp

Filesize
4KB

Download
memory/184-84-0x000000007F520000-0x000000007F521000-memory.dmp

Filesize
4KB

Download
memory/184-85-0x0000000006D83000-0x0000000006D84000-memory.dmp

Filesize
4KB

Download
memory/184-69-0x0000000006D80000-0x0000000006D81000-memory.dmp

Filesize
4KB

Download
memory/184-67-0x00000000085B0000-0x00000000085B1000-memory.dmp

Filesize
4KB

Download
memory/184-86-0x0000000009630000-0x0000000009631000-memory.dmp

Filesize
4KB

Download
memory/184-82-0x00000000094B0000-0x00000000094B1000-memory.dmp

Filesize
4KB

Download
memory/184-88-0x0000000009610000-0x0000000009611000-memory.dmp

Filesize
4KB

Download
memory/184-57-0x0000000072910000-0x0000000072FFE000-memory.dmp

Filesize
6.9MB

Download
memory/184-54-0x0000000000000000-mapping.dmp

Download
memory/496-56-0x0000000000000000-mapping.dmp

Download
memory/984-3-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/984-2-0x00000000022B0000-0x00000000022B1000-memory.dmp

Filesize
4KB

Download
memory/2176-34-0x00000000732C0000-0x00000000739AE000-memory.dmp

Filesize
6.9MB

Download
memory/2176-41-0x00000000049A0000-0x00000000049A1000-memory.dmp

Filesize
4KB

Download
memory/2176-32-0x0000000000000000-mapping.dmp

Download
memory/2176-68-0x00000000049A3000-0x00000000049A4000-memory.dmp

Filesize
4KB

Download
memory/2176-53-0x0000000009770000-0x0000000009771000-memory.dmp

Filesize
4KB

Download
memory/2176-52-0x0000000008ED0000-0x0000000008ED1000-memory.dmp

Filesize
4KB

Download
memory/2176-39-0x00000000049A2000-0x00000000049A3000-memory.dmp

Filesize
4KB

Download
memory/3148-4-0x0000000000000000-mapping.dmp

Download
memory/3148-5-0x0000000002210000-0x0000000002211000-memory.dmp

Filesize
4KB

Download
memory/3764-11-0x0000000006F70000-0x0000000006F71000-memory.dmp

Filesize
4KB

Download
memory/3764-9-0x0000000007120000-0x0000000007121000-memory.dmp

Filesize
4KB

Download
memory/3764-21-0x0000000008D30000-0x0000000008D63000-memory.dmp

Filesize
204KB

Download
memory/3764-35-0x000000007F9F0000-0x000000007F9F1000-memory.dmp

Filesize
4KB

Download
memory/3764-37-0x0000000006AE3000-0x0000000006AE4000-memory.dmp

Filesize
4KB

Download
memory/3764-19-0x0000000007FC0000-0x0000000007FC1000-memory.dmp

Filesize
4KB

Download
memory/3764-31-0x00000000091E0000-0x00000000091E1000-memory.dmp

Filesize
4KB

Download
memory/3764-18-0x0000000007D80000-0x0000000007D81000-memory.dmp

Filesize
4KB

Download
memory/3764-17-0x00000000070E0000-0x00000000070E1000-memory.dmp

Filesize
4KB

Download
memory/3764-15-0x00000000079A0000-0x00000000079A1000-memory.dmp

Filesize
4KB

Download
memory/3764-16-0x0000000006AE2000-0x0000000006AE3000-memory.dmp

Filesize
4KB

Download
memory/3764-14-0x0000000006AE0000-0x0000000006AE1000-memory.dmp

Filesize
4KB

Download
memory/3764-12-0x0000000007050000-0x0000000007051000-memory.dmp

Filesize
4KB

Download
memory/3764-30-0x0000000009240000-0x0000000009241000-memory.dmp

Filesize
4KB

Download
memory/3764-28-0x0000000008D10000-0x0000000008D11000-memory.dmp

Filesize
4KB

Download
memory/3764-10-0x0000000006ED0000-0x0000000006ED1000-memory.dmp

Filesize
4KB

Download
memory/3764-40-0x0000000006AE6000-0x0000000006AE8000-memory.dmp

Filesize
8KB

Download
memory/3764-8-0x0000000004450000-0x0000000004451000-memory.dmp

Filesize
4KB

Download
memory/3764-7-0x00000000732C0000-0x00000000739AE000-memory.dmp

Filesize
6.9MB

Download
memory/3764-6-0x0000000000000000-mapping.dmp

Download
memory/3764-29-0x0000000009090000-0x0000000009091000-memory.dmp

Filesize
4KB

Download
memory/4064-55-0x0000000000000000-mapping.dmp

Download