2999a8e24b20f86c319d5f09556f1bd87d246f4f0bc892695d42b54ed4e9344e

Analysis

max time kernel
141s
max time network
173s
platform
windows10-2004_x64
resource
win10v2004-20231215-en
resource tags

arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
submitted
29/12/2023, 18:37

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General

Target

00b17447be34416e2e8566169d920e89.exe
Size

46KB
MD5

00b17447be34416e2e8566169d920e89
SHA1

0f6719653fbb56fc0f0b013bc76bd49374b10ec9
SHA256

2999a8e24b20f86c319d5f09556f1bd87d246f4f0bc892695d42b54ed4e9344e
SHA512

1ca5af1a64d65ea4341511ce7e4fc34244e30d7a37d0b20928cf0f63f30612663bb78532f163ceedeb4e05b0d9bbb787257fbd7be4e4d07f2b0a3ce7b48a4c67
SSDEEP

768:nKUoMx/jQVq0ZLYEzct1kOjTM6f4h6ThrnKBuu9cTbeRC7VXoajHOKXWXuO9afmh:KwrQLZLUTkOX9f4kdTKEJ3eRGXPjHtmh

Score

7^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
208	rundll23.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\service32 = "C:\\Windows\\system32\\rundll23.exe"	00b17447be34416e2e8566169d920e89.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rundll23.exe	00b17447be34416e2e8566169d920e89.exe
File opened for modification	C:\Windows\SysWOW64\rundll23.exe	00b17447be34416e2e8566169d920e89.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
2300	3748	WerFault.exe	88

Suspicious behavior: EnumeratesProcesses 10 IoCs

pid	Process
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe
3748	00b17447be34416e2e8566169d920e89.exe

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
208	rundll23.exe
3748	00b17447be34416e2e8566169d920e89.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 3748 wrote to memory of 208	3748	00b17447be34416e2e8566169d920e89.exe	91
PID 3748 wrote to memory of 208	3748	00b17447be34416e2e8566169d920e89.exe	91
PID 3748 wrote to memory of 208	3748	00b17447be34416e2e8566169d920e89.exe	91

C:\Users\Admin\AppData\Local\Temp\00b17447be34416e2e8566169d920e89.exe
"C:\Users\Admin\AppData\Local\Temp\00b17447be34416e2e8566169d920e89.exe"
1⤵
- Adds Run key to start application
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:3748
- C:\Windows\SysWOW64\rundll23.exe
  C:\Windows\system32\rundll23.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:208
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3748 -s 152
  2⤵
  - Program crash
  PID:2300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 208 -ip 208
1⤵
PID:460

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 3748 -ip 3748
1⤵
PID:2340

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\SysWOW64\rundll23.exe

Filesize
46KB

MD5
00b17447be34416e2e8566169d920e89

SHA1
0f6719653fbb56fc0f0b013bc76bd49374b10ec9

SHA256
2999a8e24b20f86c319d5f09556f1bd87d246f4f0bc892695d42b54ed4e9344e

SHA512
1ca5af1a64d65ea4341511ce7e4fc34244e30d7a37d0b20928cf0f63f30612663bb78532f163ceedeb4e05b0d9bbb787257fbd7be4e4d07f2b0a3ce7b48a4c67

Download Submit
memory/3748-0-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download
memory/3748-5-0x0000000000400000-0x0000000000420000-memory.dmp

Filesize
128KB

Download