4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431

Analysis

max time kernel
86s
max time network
90s
platform
windows10-2004_x64
resource
win10v2004-20220718-en
resource tags

arch:x64arch:x86image:win10v2004-20220718-enlocale:en-usos:windows10-2004-x64system
submitted
19-07-2022 22:47

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General

Target

4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe
Size

259KB
MD5

29d3c08d5f9fcbbef6ea5493907f91d8
SHA1

7bd1a9c718eed2a9283deaad8cd1421436f3445a
SHA256

4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431
SHA512

3b603f0cee8643b5dc50dc1a4d018f4c474ccb767e222440a54e393179e326897a512c045a61042e185ab804b344d2cf77065ba6ff224627597836ceb93f28e7

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1300	winihoj.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Windows Update 8970679586 = "C:\\Windows\\9449205210684502\\winihoj.exe"	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2783062828-828903012-4218294845-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update 8970679586 = "C:\\Windows\\9449205210684502\\winihoj.exe"	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File opened for modification	C:\Windows\9449205210684502	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe
File created	C:\Windows\9449205210684502\winihoj.exe	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe
File opened for modification	C:\Windows\9449205210684502\winihoj.exe	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1584	3448	WerFault.exe	78
2524	1300	WerFault.exe	79

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3448 wrote to memory of 1300	3448	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe	79
PID 3448 wrote to memory of 1300	3448	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe	79
PID 3448 wrote to memory of 1300	3448	4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe	79

C:\Users\Admin\AppData\Local\Temp\4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe
"C:\Users\Admin\AppData\Local\Temp\4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431.exe"
1⤵
- Adds Run key to start application
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:3448
- C:\Windows\9449205210684502\winihoj.exe
  C:\Windows\9449205210684502\winihoj.exe
  2⤵
  - Executes dropped EXE
  PID:1300
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 1300 -s 672
    3⤵
    - Program crash
    PID:2524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3448 -s 460
  2⤵
  - Program crash
  PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 3448 -ip 3448
1⤵
PID:4904

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1300 -ip 1300
1⤵
PID:2516

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\9449205210684502\winihoj.exe

Filesize
259KB

MD5
29d3c08d5f9fcbbef6ea5493907f91d8

SHA1
7bd1a9c718eed2a9283deaad8cd1421436f3445a

SHA256
4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431

SHA512
3b603f0cee8643b5dc50dc1a4d018f4c474ccb767e222440a54e393179e326897a512c045a61042e185ab804b344d2cf77065ba6ff224627597836ceb93f28e7

Download Submit
C:\Windows\9449205210684502\winihoj.exe

Filesize
259KB

MD5
29d3c08d5f9fcbbef6ea5493907f91d8

SHA1
7bd1a9c718eed2a9283deaad8cd1421436f3445a

SHA256
4f85cd4bc4743dad3c0dffa0f90eb9359e8924a03307904949548af183caa431

SHA512
3b603f0cee8643b5dc50dc1a4d018f4c474ccb767e222440a54e393179e326897a512c045a61042e185ab804b344d2cf77065ba6ff224627597836ceb93f28e7

Download Submit
memory/1300-136-0x0000000005418000-0x000000000541E000-memory.dmp

Filesize
24KB

Download
memory/1300-137-0x0000000005418000-0x000000000541E000-memory.dmp

Filesize
24KB

Download
memory/1300-138-0x0000000000400000-0x00000000052A0000-memory.dmp

Filesize
78.6MB

Download
memory/3448-130-0x0000000005436000-0x000000000543D000-memory.dmp

Filesize
28KB

Download
memory/3448-131-0x0000000005436000-0x000000000543D000-memory.dmp

Filesize
28KB

Download
memory/3448-132-0x0000000000400000-0x00000000052A0000-memory.dmp

Filesize
78.6MB

Download