b7a1613a7a3d0cf7bb1930220a90c7b2bbb3362b315c6c8e33b1dec044b5cad9

Analysis

max time kernel
30s
max time network
32s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
05-03-2024 22:00

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General

Target

loader+vacbypass.exe
Size

80KB
MD5

fc7ba0d39de049bfbe8bbea22c662402
SHA1

4ed5a84cc422da30edfa6be6485143b5718fd259
SHA256

77f2c591f0fd07d923d9ed0c014a7c4cb524aa0d1a293f0de94641d06d7fefb7
SHA512

920712f43fd2f541f630e530a79580eee82ecc4c5983604dc8b8286d2baaed050737e8794e644944a752b04452817aeb963dd8263b2d8f99b0a468ab1a22e992
SSDEEP

1536:o2Y0VNblnigen1FQGpaika1PASjg/oyRp:o23rbZi/8GprF3jg/ocp

Score

1^/10

Malware Config

Signatures

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 1648 wrote to memory of 3048	1648	loader+vacbypass.exe	90
PID 1648 wrote to memory of 3048	1648	loader+vacbypass.exe	90
PID 1648 wrote to memory of 3048	1648	loader+vacbypass.exe	90
PID 3048 wrote to memory of 3560	3048	cmd.exe	91
PID 3048 wrote to memory of 3560	3048	cmd.exe	91
PID 3048 wrote to memory of 3560	3048	cmd.exe	91
PID 1648 wrote to memory of 4740	1648	loader+vacbypass.exe	92
PID 1648 wrote to memory of 4740	1648	loader+vacbypass.exe	92
PID 1648 wrote to memory of 4740	1648	loader+vacbypass.exe	92
PID 1648 wrote to memory of 3324	1648	loader+vacbypass.exe	93
PID 1648 wrote to memory of 3324	1648	loader+vacbypass.exe	93
PID 1648 wrote to memory of 3324	1648	loader+vacbypass.exe	93
PID 1648 wrote to memory of 464	1648	loader+vacbypass.exe	94
PID 1648 wrote to memory of 464	1648	loader+vacbypass.exe	94
PID 1648 wrote to memory of 464	1648	loader+vacbypass.exe	94
PID 1648 wrote to memory of 640	1648	loader+vacbypass.exe	95
PID 1648 wrote to memory of 640	1648	loader+vacbypass.exe	95
PID 1648 wrote to memory of 640	1648	loader+vacbypass.exe	95
PID 640 wrote to memory of 3488	640	cmd.exe	96
PID 640 wrote to memory of 3488	640	cmd.exe	96
PID 640 wrote to memory of 3488	640	cmd.exe	96
PID 1648 wrote to memory of 1432	1648	loader+vacbypass.exe	97
PID 1648 wrote to memory of 1432	1648	loader+vacbypass.exe	97
PID 1648 wrote to memory of 1432	1648	loader+vacbypass.exe	97
PID 1648 wrote to memory of 3676	1648	loader+vacbypass.exe	98
PID 1648 wrote to memory of 3676	1648	loader+vacbypass.exe	98
PID 1648 wrote to memory of 3676	1648	loader+vacbypass.exe	98
PID 1648 wrote to memory of 680	1648	loader+vacbypass.exe	100
PID 1648 wrote to memory of 680	1648	loader+vacbypass.exe	100
PID 1648 wrote to memory of 680	1648	loader+vacbypass.exe	100
PID 1648 wrote to memory of 2436	1648	loader+vacbypass.exe	101
PID 1648 wrote to memory of 2436	1648	loader+vacbypass.exe	101
PID 1648 wrote to memory of 2436	1648	loader+vacbypass.exe	101
PID 1648 wrote to memory of 1020	1648	loader+vacbypass.exe	113
PID 1648 wrote to memory of 1020	1648	loader+vacbypass.exe	113
PID 1648 wrote to memory of 1020	1648	loader+vacbypass.exe	113

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3488	attrib.exe

C:\Users\Admin\AppData\Local\Temp\loader+vacbypass.exe
"C:\Users\Admin\AppData\Local\Temp\loader+vacbypass.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1648
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c mode con:cols=0120 lines=0030
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3048
- - C:\Windows\SysWOW64\mode.com
    mode con:cols=0120 lines=0030
    3⤵
    PID:3560
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c title Window Title
  2⤵
  PID:4740
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c if not exist "C:\Users\Admin\AppData\Local\Temp\myfiles" mkdir "C:\Users\Admin\AppData\Local\Temp\myfiles"
  2⤵
  PID:3324
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c if not exist "C:\Users\Admin\AppData\Local\Temp\wtmpd" mkdir "C:\Users\Admin\AppData\Local\Temp\wtmpd"
  2⤵
  PID:464
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c attrib +h C:\Users\Admin\AppData\Local\Temp\wtmpd
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:640
- - C:\Windows\SysWOW64\attrib.exe
    attrib +h C:\Users\Admin\AppData\Local\Temp\wtmpd
    3⤵
    - Views/modifies file attributes
    PID:3488
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c echo:0>C:\Users\Admin\AppData\Local\Temp\i6.t
  2⤵
  PID:1432
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\i6.bat
  2⤵
  PID:3676
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c
  2⤵
  PID:680
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c pause
  2⤵
  PID:2436
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c
  2⤵
  PID:1020

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\i6.bat

Filesize
173B

MD5
0f8f70e88009593eefaa155a8e31b1d6

SHA1
eabcc3f2135e0919e9456da0a4b1084f3382d4b6

SHA256
941c169c07670650fc6c6148c1cae068b69bac209e05010594e164aafc7cdf8b

SHA512
94df468b963f3c9d133a25e1ffa57039fac01fe960f0f738552ca6440e6242ff48d0b410fe70dd05a62e4842c925c9f2b0220ca9eb9cb4ff5490ada443c9a750

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C:\Users\Admin\AppData\Local\Temp\i6.t

Filesize
3B

MD5
a5ea0ad9260b1550a14cc58d2c39b03d

SHA1
f0aedf295071ed34ab8c6a7692223d22b6a19841

SHA256
f1b2f662800122bed0ff255693df89c4487fbdcf453d3524a42d4ec20c3d9c04

SHA512
7c735c613ece191801114785c1ee26a0485cbf1e8ee2c3b85ba1ad290ef75eec9fede5e1a5dc26d504701f3542e6b6457818f4c1d62448d0db40d5f35c357d74

Download Submit