55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6

Analysis

max time kernel
136s
max time network
139s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
11/10/2022, 05:25

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General

Target

55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe
Size

120KB
MD5

62c0bde25c962ac03c4442091edb22c1
SHA1

27a5fc980fbc01faf8d6074cf754a84aa5669d0c
SHA256

55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6
SHA512

8a05545ea986f660044df6038e2a7103f52b6660be0632423cfc4ea3135fe191058a8b5e5fa95ce31a63e701cf887655b92f1c953a1704cc4d057a215e17195e
SSDEEP

3072:cxxN3+AcXEsnvlkcI8IpfUDah8rwPr7JtSBv:Af3SXFn+kIquh8r+r7eBv

Score

8^/10

persistence

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
540	efjukiolp.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	efjukiolp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\Service System = "\"c:\\windows\\efjukiolp.exe\""	efjukiolp.exe

Drops file in Windows directory 3 IoCs

description	ioc	Process
File created	\??\c:\windows\efjukiolp.exe	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe
File opened for modification	\??\c:\windows\efjukiolp.exe	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe
File created	C:\Windows\ieupdate.dat	efjukiolp.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1188	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe
540	efjukiolp.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1188 wrote to memory of 540	1188	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe	83
PID 1188 wrote to memory of 540	1188	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe	83
PID 1188 wrote to memory of 540	1188	55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe	83

C:\Users\Admin\AppData\Local\Temp\55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe
"C:\Users\Admin\AppData\Local\Temp\55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6.exe"
1⤵
- Drops file in Windows directory
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1188
- \??\c:\windows\efjukiolp.exe
  c:\windows\efjukiolp.exe
  2⤵
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in Windows directory
  - Suspicious use of SetWindowsHookEx
  PID:540

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\efjukiolp.exe

Filesize
120KB

MD5
62c0bde25c962ac03c4442091edb22c1

SHA1
27a5fc980fbc01faf8d6074cf754a84aa5669d0c

SHA256
55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6

SHA512
8a05545ea986f660044df6038e2a7103f52b6660be0632423cfc4ea3135fe191058a8b5e5fa95ce31a63e701cf887655b92f1c953a1704cc4d057a215e17195e

Download Submit
\??\c:\windows\efjukiolp.exe

Filesize
120KB

MD5
62c0bde25c962ac03c4442091edb22c1

SHA1
27a5fc980fbc01faf8d6074cf754a84aa5669d0c

SHA256
55a5ef2d4ac46d4cd76984ad12c1528ba437bbae1dcb36c9d98e3117d7bdb1d6

SHA512
8a05545ea986f660044df6038e2a7103f52b6660be0632423cfc4ea3135fe191058a8b5e5fa95ce31a63e701cf887655b92f1c953a1704cc4d057a215e17195e

Download Submit