3222fcdb60ac187e0f302064e159211e6ed17d8b98d8a9afd2dccd59e6fc6864

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

2288 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

pid	process
2288	mpcmdrun.exe

Suspicious behavior: EnumeratesProcesses 10 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

pid	process
1500	powershell.exe
1500	powershell.exe
1500	powershell.exe
1500	powershell.exe
384	powershell.exe
384	powershell.exe
384	powershell.exe
3852	powershell.exe
3852	powershell.exe
3852	powershell.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

powershell.exepowershell.exepowershell.exe

description pid process

Token: SeDebugPrivilege 1500 powershell.exe
Token: SeDebugPrivilege 384 powershell.exe
Token: SeDebugPrivilege 3852 powershell.exe

description	pid	process
Token: SeDebugPrivilege	1500	powershell.exe
Token: SeDebugPrivilege	384	powershell.exe
Token: SeDebugPrivilege	3852	powershell.exe

Suspicious use of WriteProcessMemory 17 IoCs

Processes:

updatewin1.exeupdatewin1.exepowershell.exe

description	pid	process	target process
PID 624 wrote to memory of 1180	624	updatewin1.exe	updatewin1.exe
PID 624 wrote to memory of 1180	624	updatewin1.exe	updatewin1.exe
PID 624 wrote to memory of 1180	624	updatewin1.exe	updatewin1.exe
PID 1180 wrote to memory of 1500	1180	updatewin1.exe	powershell.exe
PID 1180 wrote to memory of 1500	1180	updatewin1.exe	powershell.exe
PID 1180 wrote to memory of 1500	1180	updatewin1.exe	powershell.exe
PID 1180 wrote to memory of 384	1180	updatewin1.exe	powershell.exe
PID 1180 wrote to memory of 384	1180	updatewin1.exe	powershell.exe
PID 1180 wrote to memory of 384	1180	updatewin1.exe	powershell.exe
PID 384 wrote to memory of 3852	384	powershell.exe	powershell.exe
PID 384 wrote to memory of 3852	384	powershell.exe	powershell.exe
PID 384 wrote to memory of 3852	384	powershell.exe	powershell.exe
PID 1180 wrote to memory of 2288	1180	updatewin1.exe	mpcmdrun.exe
PID 1180 wrote to memory of 2288	1180	updatewin1.exe	mpcmdrun.exe
PID 1180 wrote to memory of 3904	1180	updatewin1.exe	cmd.exe
PID 1180 wrote to memory of 3904	1180	updatewin1.exe	cmd.exe
PID 1180 wrote to memory of 3904	1180	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:624

C:\Users\Admin\AppData\Local\Temp\updatewin1.exe
"C:\Users\Admin\AppData\Local\Temp\updatewin1.exe" --Admin
2⤵
- Suspicious use of WriteProcessMemory
PID:1180

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
powershell -Command Set-ExecutionPolicy -Scope CurrentUser RemoteSigned
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1500

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:384

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:3852

C:\Program Files\Windows Defender\mpcmdrun.exe
"C:\Program Files\Windows Defender\mpcmdrun.exe" -removedefinitions -all
3⤵
- Deletes Windows Defender Definitions
PID:2288

C:\Windows\SysWOW64\cmd.exe
C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\delself.bat""
3⤵
PID:3904

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Privilege Escalation

Defense Evasion

Impair Defenses

1

T1562

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\powershell.exe.log
MD5
13151583954f0def829054cc3eae25ec

SHA1
2a2b013e8d4201ddc8a80f9680931873702d0213

SHA256
eb542ae9c791940e8e74833eb50543dbbcbc8bf8485698fad82a8b079546c8a7

SHA512
3f7a6d0e5ca29de7b02f5cb993c508ce0c0df12c3d970a3ad6da95149b4cb5cc7a138e7ed6f83e910cb39120f199b3f74fc0ec1a14ca86435a52f247c2514aaf

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
372332d7afe64063e0bb01d5fd332b3e

SHA1
569a4c20fb1f605c831522d44e56b21d2242b3b2

SHA256
d3642c7b9a2c43f70454c1ef95b7eeccda68104231d6ac9889ccb9aaaf25a713

SHA512
f72def2ec02a4538e8ab2a0a1011e6ad9b3461b9d38aaf816b7121268598e2095b25a550fb666af19c0b935ba11fe49cc6ae0bc997e5f3bbc05194847a0f9425

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C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
MD5
eab57e200a36d01ea294a0f53ae9ccc9

SHA1
7ab408d3b218435d382fa79f3569769379787804

SHA256
277b7a47e2169927dc3bc512028bd9c9725bcb98e2298662a9f2c30e24fd27ed

SHA512
ff57f6226e619ceef70332e96c855d597abaa15799b97fda5ca9debe0e443a5572ab4fd7e14d46adb13462cfe0a6b9dd83ba9fc5554cd709624e6df09c9f2655

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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/384-193-0x0000000004B33000-0x0000000004B34000-memory.dmp

Filesize
4KB

Download
memory/384-191-0x0000000004B32000-0x0000000004B33000-memory.dmp

Filesize
4KB

Download
memory/384-190-0x0000000004B30000-0x0000000004B31000-memory.dmp

Filesize
4KB

Download
memory/384-187-0x0000000000000000-mapping.dmp

Download
memory/624-114-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1180-115-0x0000000000000000-mapping.dmp

Download
memory/1180-117-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1500-152-0x0000000006A83000-0x0000000006A84000-memory.dmp

Filesize
4KB

Download
memory/1500-124-0x0000000006ED0000-0x0000000006ED1000-memory.dmp

Filesize
4KB

Download
memory/1500-130-0x00000000080D0000-0x00000000080D1000-memory.dmp

Filesize
4KB

Download
memory/1500-138-0x0000000008E20000-0x0000000008E53000-memory.dmp

Filesize
204KB

Download
memory/1500-145-0x0000000008E00000-0x0000000008E01000-memory.dmp

Filesize
4KB

Download
memory/1500-150-0x0000000008FD0000-0x0000000008FD1000-memory.dmp

Filesize
4KB

Download
memory/1500-128-0x0000000007890000-0x0000000007891000-memory.dmp

Filesize
4KB

Download
memory/1500-151-0x000000007E510000-0x000000007E511000-memory.dmp

Filesize
4KB

Download
memory/1500-153-0x0000000009330000-0x0000000009331000-memory.dmp

Filesize
4KB

Download
memory/1500-186-0x0000000006A86000-0x0000000006A88000-memory.dmp

Filesize
8KB

Download
memory/1500-127-0x00000000079B0000-0x00000000079B1000-memory.dmp

Filesize
4KB

Download
memory/1500-126-0x0000000007760000-0x0000000007761000-memory.dmp

Filesize
4KB

Download
memory/1500-125-0x00000000076F0000-0x00000000076F1000-memory.dmp

Filesize
4KB

Download
memory/1500-129-0x0000000008290000-0x0000000008291000-memory.dmp

Filesize
4KB

Download
memory/1500-123-0x00000000070C0000-0x00000000070C1000-memory.dmp

Filesize
4KB

Download
memory/1500-116-0x0000000000000000-mapping.dmp

Download
memory/1500-121-0x0000000006A80000-0x0000000006A81000-memory.dmp

Filesize
4KB

Download
memory/1500-120-0x00000000068C0000-0x00000000068C1000-memory.dmp

Filesize
4KB

Download
memory/1500-122-0x0000000006A82000-0x0000000006A83000-memory.dmp

Filesize
4KB

Download
memory/2288-194-0x0000000000000000-mapping.dmp

Download
memory/3852-198-0x00000000072B0000-0x00000000072B1000-memory.dmp

Filesize
4KB

Download
memory/3852-199-0x00000000072B2000-0x00000000072B3000-memory.dmp

Filesize
4KB

Download
memory/3852-192-0x0000000000000000-mapping.dmp

Download
memory/3852-201-0x000000007EAB0000-0x000000007EAB1000-memory.dmp

Filesize
4KB

Download
memory/3852-202-0x00000000072B3000-0x00000000072B4000-memory.dmp

Filesize
4KB

Download
memory/3904-195-0x0000000000000000-mapping.dmp

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Analysis

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