fece5ffc9bfcd40362b010d80e7b9d5073b9c0dff81c8779af7de9a393d84041

Analysis

max time kernel
121s
max time network
121s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
25/01/2024, 05:48

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General

Target

73e45be738c785fe3245580384068572.dll
Size

36KB
MD5

73e45be738c785fe3245580384068572
SHA1

888de11007ba38d1bd527fc5f5fcf27ea0d40479
SHA256

fece5ffc9bfcd40362b010d80e7b9d5073b9c0dff81c8779af7de9a393d84041
SHA512

84433670dace45148d449cdd4a75926e4bc843df3c5a7b8fa855af57cd9a743d9022baba5637085987716652115b1cb36162cf6ea989bce686dcdade5b37f2a8
SSDEEP

768:Mt8dldJN5LXcyXrCD1tDMByGqnXm3+AVWEvaLW:vdzcyXrC/GsnXiVWEvaLW

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
2672	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1748	rundll32.exe
1748	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 2240 wrote to memory of 1748	2240	rundll32.exe	24
PID 1748 wrote to memory of 1252	1748	rundll32.exe	29
PID 1748 wrote to memory of 1252	1748	rundll32.exe	29
PID 1748 wrote to memory of 1252	1748	rundll32.exe	29
PID 1748 wrote to memory of 1252	1748	rundll32.exe	29
PID 1252 wrote to memory of 2672	1252	cmd.exe	31
PID 1252 wrote to memory of 2672	1252	cmd.exe	31
PID 1252 wrote to memory of 2672	1252	cmd.exe	31
PID 1252 wrote to memory of 2672	1252	cmd.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\73e45be738c785fe3245580384068572.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\73e45be738c785fe3245580384068572.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1748
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:1252
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:2672

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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