86e5c6a9a3967d625e89b90e1f23dc72b1ad5788edcac6f18e1d57c2185169c4

Analysis

max time kernel
117s
max time network
122s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
31/12/2023, 03:52

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General

Target

27051cd3380a97ba5267cc017ac3c58c.dll
Size

36KB
MD5

27051cd3380a97ba5267cc017ac3c58c
SHA1

dc51c055dad867c5dc091c17ec1db1cd4a9423e0
SHA256

86e5c6a9a3967d625e89b90e1f23dc72b1ad5788edcac6f18e1d57c2185169c4
SHA512

37969972c943a81bca4bcbab099f73f139ddcdcfd0490fd17fe24014cdea4f091be2e127857c9c0cc650ec8ce097775a9a292cb6691b3d4fac80cb2af4ba23aa
SSDEEP

768:bfZ2YidJN5kXcyXrCD1tDMByGqnxGm3+IdW:bedEcyXrC/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
2804	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
1968	rundll32.exe
1968	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 2212 wrote to memory of 1968	2212	rundll32.exe	28
PID 1968 wrote to memory of 2480	1968	rundll32.exe	29
PID 1968 wrote to memory of 2480	1968	rundll32.exe	29
PID 1968 wrote to memory of 2480	1968	rundll32.exe	29
PID 1968 wrote to memory of 2480	1968	rundll32.exe	29
PID 2480 wrote to memory of 2804	2480	cmd.exe	31
PID 2480 wrote to memory of 2804	2480	cmd.exe	31
PID 2480 wrote to memory of 2804	2480	cmd.exe	31
PID 2480 wrote to memory of 2804	2480	cmd.exe	31

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\27051cd3380a97ba5267cc017ac3c58c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\27051cd3380a97ba5267cc017ac3c58c.dll,#1
  2⤵
  - Modifies registry class
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Windows\SysWOW64\cmd.exe
    cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:2480
  - - C:\Windows\SysWOW64\regedit.exe
      "regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
      4⤵
      Runs .reg file with regedit
      PID:2804

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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