bbf4abb0293f2f9920c1ee573abab2fe1453fd8340c516a8f1c09dd9bf752379

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
08/01/2024, 19:32

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General

Target

4c456da64cc8c42447c902256776c9d3.dll
Size

36KB
MD5

4c456da64cc8c42447c902256776c9d3
SHA1

fa5e4896acf232372a782ef8fa931acf2a24eba7
SHA256

bbf4abb0293f2f9920c1ee573abab2fe1453fd8340c516a8f1c09dd9bf752379
SHA512

a889b84eec4e014156fc1076c56ec018ab90c1732ac6ebc8cffedff97d3f2edfe716e640943bfcfbb6ee941678072f2424f4bd65ab18050545450509a1938494
SSDEEP

768:SfZ2YidJN5kXcyXrCD1tDMByGqnxGm3+IdW:SedEcyXrC/GsnsGdW

Score

8^/10

persistence

Malware Config

Signatures

Modifies AppInit DLL entries 2 TTPs
persistence

Registry Run Keys / Startup Folder
T1547.001

Modify Registry
T1112
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Modifies registry class 1 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\regfile\shell\open\command\ = "regedit.exe /s \"%1\""	rundll32.exe

Runs .reg file with regedit 1 IoCs

pid	Process
2740	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2984	rundll32.exe
2984	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2968 wrote to memory of 2984	2968	rundll32.exe	15
PID 2984 wrote to memory of 2556	2984	rundll32.exe	19
PID 2984 wrote to memory of 2556	2984	rundll32.exe	19
PID 2984 wrote to memory of 2556	2984	rundll32.exe	19
PID 2984 wrote to memory of 2556	2984	rundll32.exe	19
PID 2556 wrote to memory of 2740	2556	cmd.exe	18
PID 2556 wrote to memory of 2740	2556	cmd.exe	18
PID 2556 wrote to memory of 2740	2556	cmd.exe	18
PID 2556 wrote to memory of 2740	2556	cmd.exe	18

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c456da64cc8c42447c902256776c9d3.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2968
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\4c456da64cc8c42447c902256776c9d3.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:2984
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2556

C:\Windows\SysWOW64\regedit.exe
"regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
1⤵
- Runs .reg file with regedit
PID:2740

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\a.reg

Filesize
152B

MD5
b100f5324ef74ded0b998e64d07a2e19

SHA1
40b0d7f51bf2dd8451f1b723d21355c471a5fa46

SHA256
3db613d24a75ae220891698c055e1c580a42e58564f568a0510db87581cc2042

SHA512
c12391bb37c334074f7d7e1257b6364fd5cbce848e0a8fe15b8326f54fd9568fe3baec58618c4334027a774a06a08ec249cb71db925c1f85feee6a3d3a816c04

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