14c7bec7369d4175c6d92554b033862b3847ff98a04dfebdf9f5bb30180ed13e

Analysis

max time kernel
51s
max time network
51s
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
540	mpcmdrun.exe

Disables Task Manager via registry modification
evasion

Deletes itself 1 IoCs

Processes:

cmd.exe

pid	Process
852	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
1984	powershell.exe
1984	powershell.exe
1984	powershell.exe
1372	powershell.exe
1372	powershell.exe
820	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description	pid	Process
Token: SeDebugPrivilege	1984	powershell.exe
Token: SeDebugPrivilege	1372	powershell.exe
Token: SeDebugPrivilege	820	powershell.exe

Suspicious use of WriteProcessMemory 39 IoCs

Processes:

updatewin1.exeupdatewin1.exepowershell.exe

description	pid	Process	procid_target
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1656 wrote to memory of 1996	1656	updatewin1.exe	26
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1984	1996	updatewin1.exe	27
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1996 wrote to memory of 1372	1996	updatewin1.exe	29
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1372 wrote to memory of 820	1372	powershell.exe	32
PID 1996 wrote to memory of 540	1996	updatewin1.exe	34
PID 1996 wrote to memory of 540	1996	updatewin1.exe	34
PID 1996 wrote to memory of 540	1996	updatewin1.exe	34
PID 1996 wrote to memory of 540	1996	updatewin1.exe	34
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38
PID 1996 wrote to memory of 852	1996	updatewin1.exe	38

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1656
- C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
  "C:\Users\Admin\AppData\Local\Temp\updatewin1.exe" --Admin
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1996
- - C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
    powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
    3⤵
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1984
- - 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:1372
  - - 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:820
- - C:\Program Files\Windows Defender\mpcmdrun.exe
    "C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
    3⤵
    - Deletes Windows Defender Definitions
    PID:540
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
    3⤵
    - Deletes itself
    PID:852

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

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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

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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
1f6698bd79d2a281f4760dac00d6df21

SHA1
21f2a3e7bd04f4f55195bb6dccef99b8281438c2

SHA256
2e90794b6fde5e224f383bb3d6d14ac36198c216ac316a0227461bcd0240eb43

SHA512
5de162a5d90e9b349774f9792b4beb830162285ca9dd3220822e0289e0e5cab2cdd8a91e2e9b947248c47271f6f8dd5a363dcc2e481868c01dc454795c95c248

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
fc5418ffbf636175aeb670a109da8e25

SHA1
1b691031b02b31c3f3c99cfb16fd90c4ed4fc8b9

SHA256
3cdf874fa6d604348df809902e9fd7b9f8c9c1e33d58b37caf842177a596ebc3

SHA512
ab7a6152bfa08a25aa922c325856848acadeb89e2980e29fe4b9ec821e698848938a8a42e53248c9bfec1106a0e135a84d3c794570ec570b4af00289656aae33

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

MD5
fc5418ffbf636175aeb670a109da8e25

SHA1
1b691031b02b31c3f3c99cfb16fd90c4ed4fc8b9

SHA256
3cdf874fa6d604348df809902e9fd7b9f8c9c1e33d58b37caf842177a596ebc3

SHA512
ab7a6152bfa08a25aa922c325856848acadeb89e2980e29fe4b9ec821e698848938a8a42e53248c9bfec1106a0e135a84d3c794570ec570b4af00289656aae33

Download Submit
memory/540-55-0x0000000000000000-mapping.dmp

Download
memory/820-72-0x0000000005A30000-0x0000000005A31000-memory.dmp

Filesize
4KB

Download
memory/820-57-0x0000000073740000-0x0000000073E2E000-memory.dmp

Filesize
6.9MB

Download
memory/820-58-0x0000000002530000-0x0000000002531000-memory.dmp

Filesize
4KB

Download
memory/820-53-0x0000000000000000-mapping.dmp

Download
memory/820-62-0x0000000004970000-0x0000000004971000-memory.dmp

Filesize
4KB

Download
memory/820-63-0x0000000004972000-0x0000000004973000-memory.dmp

Filesize
4KB

Download
memory/820-69-0x00000000058E0000-0x00000000058E1000-memory.dmp

Filesize
4KB

Download
memory/820-60-0x0000000002730000-0x0000000002731000-memory.dmp

Filesize
4KB

Download
memory/820-84-0x00000000064E0000-0x00000000064E1000-memory.dmp

Filesize
4KB

Download
memory/820-85-0x00000000064F0000-0x00000000064F1000-memory.dmp

Filesize
4KB

Download
memory/820-86-0x000000007EF20000-0x000000007EF21000-memory.dmp

Filesize
4KB

Download
memory/852-61-0x0000000000000000-mapping.dmp

Download
memory/1372-42-0x0000000002660000-0x0000000002661000-memory.dmp

Filesize
4KB

Download
memory/1372-44-0x0000000005420000-0x0000000005421000-memory.dmp

Filesize
4KB

Download
memory/1372-43-0x0000000002662000-0x0000000002663000-memory.dmp

Filesize
4KB

Download
memory/1372-41-0x00000000026F0000-0x00000000026F1000-memory.dmp

Filesize
4KB

Download
memory/1372-40-0x0000000004920000-0x0000000004921000-memory.dmp

Filesize
4KB

Download
memory/1372-39-0x0000000001D30000-0x0000000001D31000-memory.dmp

Filesize
4KB

Download
memory/1372-38-0x00000000737C0000-0x0000000073EAE000-memory.dmp

Filesize
6.9MB

Download
memory/1372-35-0x0000000000000000-mapping.dmp

Download
memory/1372-52-0x0000000005900000-0x0000000005901000-memory.dmp

Filesize
4KB

Download
memory/1656-2-0x0000000074D11000-0x0000000074D13000-memory.dmp

Filesize
8KB

Download
memory/1656-3-0x0000000001FB0000-0x0000000001FC1000-memory.dmp

Filesize
68KB

Download
memory/1656-9-0x0000000000400000-0x0000000000432000-memory.dmp

Filesize
200KB

Download
memory/1984-25-0x0000000006160000-0x0000000006161000-memory.dmp

Filesize
4KB

Download
memory/1984-13-0x0000000004950000-0x0000000004951000-memory.dmp

Filesize
4KB

Download
memory/1984-20-0x0000000006100000-0x0000000006101000-memory.dmp

Filesize
4KB

Download
memory/1984-17-0x00000000053E0000-0x00000000053E1000-memory.dmp

Filesize
4KB

Download
memory/1984-16-0x0000000004912000-0x0000000004913000-memory.dmp

Filesize
4KB

Download
memory/1984-15-0x0000000004910000-0x0000000004911000-memory.dmp

Filesize
4KB

Download
memory/1984-14-0x0000000002780000-0x0000000002781000-memory.dmp

Filesize
4KB

Download
memory/1984-26-0x0000000006350000-0x0000000006351000-memory.dmp

Filesize
4KB

Download
memory/1984-12-0x00000000024B0000-0x00000000024B1000-memory.dmp

Filesize
4KB

Download
memory/1984-11-0x00000000737F0000-0x0000000073EDE000-memory.dmp

Filesize
6.9MB

Download
memory/1984-33-0x000000007EF30000-0x000000007EF31000-memory.dmp

Filesize
4KB

Download
memory/1984-7-0x0000000000000000-mapping.dmp

Download
memory/1984-34-0x00000000062D0000-0x00000000062D1000-memory.dmp

Filesize
4KB

Download
memory/1996-4-0x0000000000000000-mapping.dmp

Download
memory/1996-6-0x0000000002000000-0x0000000002011000-memory.dmp

Filesize
68KB

Download