04f91317aa572a074a55f0cd1e54bb3c8dc7b8ae048698fb23c83d193759e341

Analysis

max time kernel
118s
max time network
120s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
01/01/2024, 08:20

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General

Target

3c5c8f8427ab0f784310b7a3302de88c.dll
Size

36KB
MD5

3c5c8f8427ab0f784310b7a3302de88c
SHA1

7fad7076010eecbd13be3b96e7e5e98030216893
SHA256

04f91317aa572a074a55f0cd1e54bb3c8dc7b8ae048698fb23c83d193759e341
SHA512

e0d9229989d721a0737994fb8b225cc6c7fd54aefbe2f30ba79f9b0275dd9ca69494d0da0e29228c658fbb677a85a6aadda5da40e8c7617364a2df54d7fcd811
SSDEEP

768:SjgiGxy+iC146BDRK97J3+ZFWo2iU+DIt8:yMy+hQYFWuIt8

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
3012	regedit.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2540	rundll32.exe
2540	rundll32.exe

Suspicious use of WriteProcessMemory 15 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2028 wrote to memory of 2540	2028	rundll32.exe	14
PID 2540 wrote to memory of 1876	2540	rundll32.exe	17
PID 2540 wrote to memory of 1876	2540	rundll32.exe	17
PID 2540 wrote to memory of 1876	2540	rundll32.exe	17
PID 2540 wrote to memory of 1876	2540	rundll32.exe	17
PID 1876 wrote to memory of 3012	1876	cmd.exe	16
PID 1876 wrote to memory of 3012	1876	cmd.exe	16
PID 1876 wrote to memory of 3012	1876	cmd.exe	16
PID 1876 wrote to memory of 3012	1876	cmd.exe	16

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c5c8f8427ab0f784310b7a3302de88c.dll,#1
1⤵
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:2540
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\a.reg
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1876

C:\Windows\SysWOW64\regedit.exe
"regedit.exe" /s "C:\Users\Admin\AppData\Local\Temp\a.reg"
1⤵
- Runs .reg file with regedit
PID:3012

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\3c5c8f8427ab0f784310b7a3302de88c.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2028

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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