14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e

Analysis

max time kernel
43s
max time network
46s
platform
windows7_x64
resource
win7v20201028
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

1868 mpcmdrun.exe
Disables Task Manager via registry modification
evasion
Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

1688 cmd.exe
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 6 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid process

1240 powershell.exe
1240 powershell.exe
1240 powershell.exe
1456 powershell.exe
1456 powershell.exe
1672 powershell.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1240 powershell.exe
Token: SeDebugPrivilege 1456 powershell.exe
Token: SeDebugPrivilege 1672 powershell.exe

pid	process
1868	mpcmdrun.exe

pid	process
1688	cmd.exe

pid	process
1240	powershell.exe
1240	powershell.exe
1240	powershell.exe
1456	powershell.exe
1456	powershell.exe
1672	powershell.exe

description	pid	process
Token: SeDebugPrivilege	1240	powershell.exe
Token: SeDebugPrivilege	1456	powershell.exe
Token: SeDebugPrivilege	1672	powershell.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

updatewin1.exeupdatewin1.exepowershell.exe

description	pid	process	target process
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 1044 wrote to memory of 2036	1044	updatewin1.exe	updatewin1.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1240	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 2036 wrote to memory of 1456	2036	updatewin1.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 1456 wrote to memory of 1672	1456	powershell.exe	powershell.exe
PID 2036 wrote to memory of 1868	2036	updatewin1.exe	mpcmdrun.exe
PID 2036 wrote to memory of 1868	2036	updatewin1.exe	mpcmdrun.exe
PID 2036 wrote to memory of 1868	2036	updatewin1.exe	mpcmdrun.exe
PID 2036 wrote to memory of 1868	2036	updatewin1.exe	mpcmdrun.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe
PID 2036 wrote to memory of 1688	2036	updatewin1.exe	cmd.exe

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1044
- C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
  "C:\Users\Admin\AppData\Local\Temp\updatewin1.exe" --Admin
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:2036
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1240
- - 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:1456
  - - 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:1672
- - C:\Program Files\Windows Defender\mpcmdrun.exe
    "C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
    3⤵
    - Deletes Windows Defender Definitions
    PID:1868
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
    3⤵
    - Deletes itself
    PID:1688

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\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_1b0b2f5a-4fa9-4284-9780-9a1da7b14a47

MD5
02ff38ac870de39782aeee04d7b48231

SHA1
0390d39fa216c9b0ecdb38238304e518fb2b5095

SHA256
fbd66a9baf753db31b8de23f2d51b67f8676687503653103080c45b16f1dc876

SHA512
24a1ff76ee42ff7a5ea42843928c4df07b06178f7781cd840e1e086e88735d81506eb67259ff1e6ce5aaa7c5baea03886da265eb7e025ff4dc4c4b5f8cd3e341

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_85c7c16f-de6b-4cda-bf8a-ede9c5910d3d

MD5
df44874327d79bd75e4264cb8dc01811

SHA1
1396b06debed65ea93c24998d244edebd3c0209d

SHA256
55de642c5c9e436ec01c57004dae797022442c3245daf7162d19a5585f221181

SHA512
95dc9298b8db059bbe746f67e6a7f8515781c7053cc60c01532e47623a996be7e1bd23d1bd8f5f2045adff27454f44930d503c15b695690088841cedbd2a06c3

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_a02197da-f9c8-43e6-9ff1-846e01d2d404

MD5
75a8da7754349b38d64c87c938545b1b

SHA1
5c28c257d51f1c1587e29164cc03ea880c21b417

SHA256
bf08151c174b5d00c9dbc7907b2c6a01b4be76bfa3afce1e8bd98a04ad833c96

SHA512
798797bc74c56c874e9a5fdcb0157c04e37a1b3cce285ef064b01bceef8cec45f11a5198918c6c647220b62883606b5e12e3cca3ea369f3a66e69dea6e15f643

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_b771b377-145f-49e9-bf64-45e69646f7b9

MD5
5e3c7184a75d42dda1a83606a45001d8

SHA1
94ca15637721d88f30eb4b6220b805c5be0360ed

SHA256
8278033a65d1ff48be4d86e11f87930d187692f59f8bf2f0a9d170de285afb59

SHA512
fae99b6e9b106e0f1c30aa4082b25ae1ad643455c1295c2c16ad534e3e611b9b08492353ffe1af1cfdddc9b2b7c330747a64012c45e62b8f4a4982dcc214e05b

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_c356f451-13b2-41fc-8d4c-54a293efa6e1

MD5
b6d38f250ccc9003dd70efd3b778117f

SHA1
d5a17c02cac698d4f0a4a9b7d71db2aa19e3f18a

SHA256
4de9d7b5ccab7b67ca8efc83084c7ee6e5e872b7216ed4683bc5da950bf41265

SHA512
67d8195836b7f280d3f9219fd0f58276342e55d5dfdd8a4c54355030d96685d73f1b2b6da0eb39322ec7c3a1d1c5ef06b52d22646cea30a96f822de1800d31e9

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_ce569c42-07bf-442e-b377-8e9695c9383c

MD5
be4d72095faf84233ac17b94744f7084

SHA1
cc78ce5b9c57573bd214a8f423ee622b00ebb1ec

SHA256
b0d72c5c22e57913476ac8fc686a4593f137c6667d5094522c0a0685dabd7adc

SHA512
43856e9b1032b8690ceea810c931bed3655e9190414bb220fb6afc136f31b8335e07604dffb28405d4006f266a54cff424c527d29924b1b732c9647a3252b097

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheEntry_dadf780e-0f00-49bb-86e1-35585efd8a97

MD5
a725bb9fafcf91f3c6b7861a2bde6db2

SHA1
8bb5b83f3cc37ff1e5ea4f02acae38e72364c114

SHA256
51651f27f54c7261887037aa1de4eff0a26c6807906dfc34a15cd5a0b58a8431

SHA512
1c4b21dd5660bfec8347257bb3da64681b0a97c427790d9ab3484f687dac032bcff0e07876635953697b00cf83e7d37f97c44e0219627fd0533f60ed3024b97e

Download Submit
C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\CommandAnalysis\PowerShell_AnalysisCacheIndex

MD5
0b727a6873472416d21ad579bd4cb152

SHA1
41ebf63d52db9dd8a012298de5b68fb05937fbd9

SHA256
3873b47dabe25d264440a5a3bb141b63dbcac8056b1c4053f3fd128065c75778

SHA512
b313a127f4f0bfa48bc1169a5f94ac06285d99e6badc90f2f8dbe3f0eead57b95111d05253545135dbca0f458636e9be7b41fc7dd4eccc6c5ec6d175ef48ca17

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

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5
ba845d8e5364df2a109b2b72fecc258a

SHA1
5bdc4896c183ddd82fd7d1ac6485f407f0654b8c

SHA256
cec6ea03b9aefbdeac40596d97e6167c50ac8642bb12852e66dd4023b03e380b

SHA512
9370d1cdf9a879c2da8d96e7caf42028c1666369632fb7c2e11ec0bf8d72ebcc79ce3a1eb50cd141db0154151b2274c7f5bcc69c6d441d69238899f579817637

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\d93f411851d7c929.customDestinations-ms

MD5
ba845d8e5364df2a109b2b72fecc258a

SHA1
5bdc4896c183ddd82fd7d1ac6485f407f0654b8c

SHA256
cec6ea03b9aefbdeac40596d97e6167c50ac8642bb12852e66dd4023b03e380b

SHA512
9370d1cdf9a879c2da8d96e7caf42028c1666369632fb7c2e11ec0bf8d72ebcc79ce3a1eb50cd141db0154151b2274c7f5bcc69c6d441d69238899f579817637

Download Submit
memory/1044-9-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1044-2-0x00000000760A1000-0x00000000760A3000-memory.dmp

Filesize
8KB

Download
memory/1044-3-0x00000000021D0000-0x00000000021E1000-memory.dmp

Filesize
68KB

Download
memory/1240-12-0x0000000000BB0000-0x0000000000BB1000-memory.dmp

Filesize
4KB

Download
memory/1240-33-0x0000000006290000-0x0000000006291000-memory.dmp

Filesize
4KB

Download
memory/1240-26-0x0000000006350000-0x0000000006351000-memory.dmp

Filesize
4KB

Download
memory/1240-25-0x0000000006160000-0x0000000006161000-memory.dmp

Filesize
4KB

Download
memory/1240-20-0x0000000006100000-0x0000000006101000-memory.dmp

Filesize
4KB

Download
memory/1240-17-0x0000000002870000-0x0000000002871000-memory.dmp

Filesize
4KB

Download
memory/1240-16-0x0000000002660000-0x0000000002661000-memory.dmp

Filesize
4KB

Download
memory/1240-40-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1240-15-0x0000000004A12000-0x0000000004A13000-memory.dmp

Filesize
4KB

Download
memory/1240-14-0x0000000004A50000-0x0000000004A51000-memory.dmp

Filesize
4KB

Download
memory/1240-13-0x0000000004A10000-0x0000000004A11000-memory.dmp

Filesize
4KB

Download
memory/1240-11-0x0000000073920000-0x000000007400E000-memory.dmp

Filesize
6.9MB

Download
memory/1240-7-0x0000000000000000-mapping.dmp

Download
memory/1456-43-0x0000000002800000-0x0000000002801000-memory.dmp

Filesize
4KB

Download
memory/1456-44-0x0000000005520000-0x0000000005521000-memory.dmp

Filesize
4KB

Download
memory/1456-41-0x0000000004C20000-0x0000000004C21000-memory.dmp

Filesize
4KB

Download
memory/1456-42-0x0000000004C22000-0x0000000004C23000-memory.dmp

Filesize
4KB

Download
memory/1456-39-0x0000000004C60000-0x0000000004C61000-memory.dmp

Filesize
4KB

Download
memory/1456-38-0x0000000002650000-0x0000000002651000-memory.dmp

Filesize
4KB

Download
memory/1456-52-0x00000000058D0000-0x00000000058D1000-memory.dmp

Filesize
4KB

Download
memory/1456-34-0x0000000000000000-mapping.dmp

Download
memory/1456-37-0x00000000738D0000-0x0000000073FBE000-memory.dmp

Filesize
6.9MB

Download
memory/1672-58-0x0000000000AE0000-0x0000000000AE1000-memory.dmp

Filesize
4KB

Download
memory/1672-57-0x00000000738C0000-0x0000000073FAE000-memory.dmp

Filesize
6.9MB

Download
memory/1672-72-0x0000000005980000-0x0000000005981000-memory.dmp

Filesize
4KB

Download
memory/1672-59-0x0000000004C10000-0x0000000004C11000-memory.dmp

Filesize
4KB

Download
memory/1672-86-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1672-61-0x0000000004BD0000-0x0000000004BD1000-memory.dmp

Filesize
4KB

Download
memory/1672-62-0x0000000004BD2000-0x0000000004BD3000-memory.dmp

Filesize
4KB

Download
memory/1672-64-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/1672-53-0x0000000000000000-mapping.dmp

Download
memory/1672-66-0x0000000004BB0000-0x0000000004BB1000-memory.dmp

Filesize
4KB

Download
memory/1672-85-0x00000000064F0000-0x00000000064F1000-memory.dmp

Filesize
4KB

Download
memory/1672-84-0x00000000064A0000-0x00000000064A1000-memory.dmp

Filesize
4KB

Download
memory/1672-69-0x0000000005940000-0x0000000005941000-memory.dmp

Filesize
4KB

Download
memory/1688-60-0x0000000000000000-mapping.dmp

Download
memory/1868-55-0x0000000000000000-mapping.dmp

Download
memory/2036-4-0x0000000000000000-mapping.dmp

Download
memory/2036-6-0x0000000001F10000-0x0000000001F21000-memory.dmp

Filesize
68KB

Download