40f12f633dc02947e5618f905b7f7ed0d7be5d26122a89cd0b4b8fbe9c7f05ec

Analysis

max time kernel
150s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03-02-2024 12:23

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General

Target

8c4ff6edc99105c40e6ea80942b62519.exe
Size

304KB
MD5

8c4ff6edc99105c40e6ea80942b62519
SHA1

8135e9b5b8810dff6130da2de78ce287a98def37
SHA256

40f12f633dc02947e5618f905b7f7ed0d7be5d26122a89cd0b4b8fbe9c7f05ec
SHA512

fe55c8493398eb886ddd2fbca9fefa5b6e115e6901e33e9c919e07ee57bb1310f454bb3b057437e385e51dee531a230487c135f714077327e10349adfe7408e3
SSDEEP

6144:ipO0DAlw/SrYaWy9WJGNppRrk3hzOD0jAWgCP2/HKR0+bgVdIL2B7K7RhTwp:1+/SrXWy9WkNXRrszO6gCu/HK3gVdISl

Score

7^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2408	SkypeClient.EXE

Loads dropped DLL 2 IoCs

pid	Process
1276	8c4ff6edc99105c40e6ea80942b62519.exe
1276	8c4ff6edc99105c40e6ea80942b62519.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\WINDOWS\SysWOW64\SkypeClient.EXE	8c4ff6edc99105c40e6ea80942b62519.exe

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 3 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Main	8c4ff6edc99105c40e6ea80942b62519.exe
Key created	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch	8c4ff6edc99105c40e6ea80942b62519.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3308111660-3636268597-2291490419-1000\Software\Microsoft\Internet Explorer\Main\WindowsSearch\Version = "WS not running"	8c4ff6edc99105c40e6ea80942b62519.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2408	SkypeClient.EXE

Suspicious use of SetWindowsHookEx 4 IoCs

pid	Process
1276	8c4ff6edc99105c40e6ea80942b62519.exe
1276	8c4ff6edc99105c40e6ea80942b62519.exe
2408	SkypeClient.EXE
2408	SkypeClient.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1276 wrote to memory of 2408	1276	8c4ff6edc99105c40e6ea80942b62519.exe	28
PID 1276 wrote to memory of 2408	1276	8c4ff6edc99105c40e6ea80942b62519.exe	28
PID 1276 wrote to memory of 2408	1276	8c4ff6edc99105c40e6ea80942b62519.exe	28
PID 1276 wrote to memory of 2408	1276	8c4ff6edc99105c40e6ea80942b62519.exe	28

C:\Users\Admin\AppData\Local\Temp\8c4ff6edc99105c40e6ea80942b62519.exe
"C:\Users\Admin\AppData\Local\Temp\8c4ff6edc99105c40e6ea80942b62519.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- Modifies Internet Explorer settings
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1276
- C:\WINDOWS\SysWOW64\SkypeClient.EXE
  "C:\WINDOWS\system32\SkypeClient.EXE"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2408

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

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

\Windows\SysWOW64\SkypeClient.EXE

Filesize
240KB

MD5
7311e55f12cc248d08211e46fd4d2369

SHA1
3b68b0fef1e1ab9975b75f68917042039c3fc4be

SHA256
e62a98d8850e7940f215d16d76967b9654b607f74f158ebe4e2eedfaa8933d66

SHA512
be48f73f966faa4b7e285b1944a075ba6f38a55133304071009654af3846454b18b6aaa159f8896544291ea31a04af382310c19cad240ecb8c67faae0461e4af

Download Submit
memory/1276-0-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1276-10-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download
memory/1276-12-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1276-32-0x0000000000400000-0x00000000004FE000-memory.dmp

Filesize
1016KB

Download