b5f06b3e1a8856ea36f9a85336395234bafbe5a909a395c54d06eb54a36f17a3

Analysis

max time kernel
149s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 01:51

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

DOC 331-100920-00.exe
Size

1.1MB
MD5

81556c04b78490685e602d47202617e3
SHA1

afcf7ca914c76a8b80136cdbbf2b31d8c6b96c7b
SHA256

54c9ab39f879d1c9f3fc61e3cb1ffb06ac237bb20647c1f521d09b2dbb4964d2
SHA512

d7283501deeccbe53d9cdf0d3c12a179cb810c30fa8ab02066ed079c9fa424ecc710a11010db64e81a7cb011b9a2ca6aa8df56357484f152fd78bbb0453605b9
SSDEEP

24576:wAHnh+eWsN3skA4RV1Hom2KXMmHa2OqYIe6JZW9jV0jy59Qa03NSh5:nh+ZkldoPK8Ya2Oce0W9jSyLB

Score

5^/10

Malware Config

Signatures

Suspicious use of SetThreadContext 5 IoCs

description	pid	Process	procid_target
PID 1532 set thread context of 1200	1532	DOC 331-100920-00.exe	86
PID 1200 set thread context of 3512	1200	svchost.exe	56
PID 1200 set thread context of 3844	1200	svchost.exe	96
PID 3844 set thread context of 3512	3844	netbtugc.exe	56
PID 3844 set thread context of 2240	3844	netbtugc.exe	97

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4504	1532	WerFault.exe	82

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-259785868-298165991-4178590326-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netbtugc.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
1200	svchost.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1532	DOC 331-100920-00.exe
1200	svchost.exe
3512	Explorer.EXE
3512	Explorer.EXE
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe
3844	netbtugc.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1532	DOC 331-100920-00.exe
1532	DOC 331-100920-00.exe

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1532	DOC 331-100920-00.exe
1532	DOC 331-100920-00.exe

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
3512	Explorer.EXE

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1532 wrote to memory of 1200	1532	DOC 331-100920-00.exe	86
PID 1532 wrote to memory of 1200	1532	DOC 331-100920-00.exe	86
PID 1532 wrote to memory of 1200	1532	DOC 331-100920-00.exe	86
PID 1532 wrote to memory of 1200	1532	DOC 331-100920-00.exe	86
PID 3512 wrote to memory of 3844	3512	Explorer.EXE	96
PID 3512 wrote to memory of 3844	3512	Explorer.EXE	96
PID 3512 wrote to memory of 3844	3512	Explorer.EXE	96
PID 3844 wrote to memory of 2240	3844	netbtugc.exe	97
PID 3844 wrote to memory of 2240	3844	netbtugc.exe	97

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: MapViewOfSection
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3512
- C:\Users\Admin\AppData\Local\Temp\DOC 331-100920-00.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC 331-100920-00.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of FindShellTrayWindow
  - Suspicious use of SendNotifyMessage
  - Suspicious use of WriteProcessMemory
  PID:1532
- - C:\Windows\SysWOW64\svchost.exe
    "C:\Users\Admin\AppData\Local\Temp\DOC 331-100920-00.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    PID:1200
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1532 -s 756
    3⤵
    - Program crash
    PID:4504
- C:\Windows\SysWOW64\netbtugc.exe
  "C:\Windows\SysWOW64\netbtugc.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:3844
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2240

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1532 -ip 1532
1⤵
PID:5092

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\aut36EE.tmp

Filesize
264KB

MD5
6096b4946e5c7c4cbe25f2c73a79258e

SHA1
c8d132b9458f95d3765b983e2743950c9986b76b

SHA256
f66d39d90b67086468fe0596fcb6608c55f028168aef16bc49382b5dd5279289

SHA512
40816ccac64d8371d3d312d582003e193a3fe92cc2f7f2c3281cc69cf37eb8c701338f535ec7cdf14aab33147b439f36c25df9b74ad4ed8bf57e06ac222ff955

Download Submit
memory/1200-22-0x00000000011D0000-0x00000000011F1000-memory.dmp

Filesize
132KB

Download
memory/1200-13-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1200-14-0x0000000001400000-0x000000000174A000-memory.dmp

Filesize
3.3MB

Download
memory/1200-15-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1200-16-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1200-17-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1200-18-0x00000000011D0000-0x00000000011F1000-memory.dmp

Filesize
132KB

Download
memory/1200-21-0x0000000000400000-0x0000000000442000-memory.dmp

Filesize
264KB

Download
memory/1532-12-0x0000000000E90000-0x0000000000E94000-memory.dmp

Filesize
16KB

Download
memory/2240-36-0x00000245A52E0000-0x00000245A53E6000-memory.dmp

Filesize
1.0MB

Download
memory/3512-29-0x0000000002B30000-0x0000000002C26000-memory.dmp

Filesize
984KB

Download
memory/3512-28-0x0000000002B30000-0x0000000002C26000-memory.dmp

Filesize
984KB

Download
memory/3512-37-0x0000000002B30000-0x0000000002C26000-memory.dmp

Filesize
984KB

Download
memory/3844-20-0x0000000000FB0000-0x0000000000FEF000-memory.dmp

Filesize
252KB

Download
memory/3844-24-0x0000000000FB0000-0x0000000000FEF000-memory.dmp

Filesize
252KB

Download
memory/3844-23-0x00000000019D0000-0x0000000001D1A000-memory.dmp

Filesize
3.3MB

Download
memory/3844-19-0x0000000000FB0000-0x0000000000FEF000-memory.dmp

Filesize
252KB

Download
memory/3844-25-0x0000000001810000-0x00000000018B0000-memory.dmp

Filesize
640KB

Download
memory/3844-26-0x0000000000FB0000-0x0000000000FEF000-memory.dmp

Filesize
252KB

Download
memory/3844-27-0x0000000001810000-0x00000000018B0000-memory.dmp

Filesize
640KB

Download