9ff72a8d819acd73ac211c5e7e9255a05eecbe3bfcf037d5fa020b25396b6ca9

Analysis

max time kernel
166s
max time network
145s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
30-12-2023 08:59

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General

Target

13f33ea82bc9e4e2aa380a044dcab53b.exe
Size

19KB
MD5

13f33ea82bc9e4e2aa380a044dcab53b
SHA1

f0c17221d7098fe713d091ae074b32dc3a7a08ef
SHA256

9ff72a8d819acd73ac211c5e7e9255a05eecbe3bfcf037d5fa020b25396b6ca9
SHA512

cfcdf26de85a33a26ca7a0a6fbf25e780ddf480b253749fc254e01d82cadad6fa419d75906fefcbccdc185117acb9dadeebf6a4a243738366c0f0bd1f62acb2e
SSDEEP

192:4w3YuHqnNLBZOpEHqySjGfhQh8SgB53ppUoB0XZ/2zu/KHYHh+FopyF2oRlOxt6x:P3YSqMpEHq22q3ppxAune2oEF2oRlFQY

Score

7^/10

persistence upx

Malware Config

Signatures

Loads dropped DLL 1 IoCs

pid	Process
2852	13f33ea82bc9e4e2aa380a044dcab53b.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/2852-0-0x0000000000400000-0x0000000000412000-memory.dmp	upx
behavioral1/memory/2852-18-0x0000000000400000-0x0000000000412000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\RUN\rewkljlpw = "C:\\Windows\\rewkljlpw.exe"	13f33ea82bc9e4e2aa380a044dcab53b.exe

Drops file in System32 directory 1 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\rewkljlpw.dll	13f33ea82bc9e4e2aa380a044dcab53b.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\rewkljlpw.exe	13f33ea82bc9e4e2aa380a044dcab53b.exe
File opened for modification	C:\Windows\rewkljlpw.exe	13f33ea82bc9e4e2aa380a044dcab53b.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
2852	13f33ea82bc9e4e2aa380a044dcab53b.exe
2852	13f33ea82bc9e4e2aa380a044dcab53b.exe
2852	13f33ea82bc9e4e2aa380a044dcab53b.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2852	13f33ea82bc9e4e2aa380a044dcab53b.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 1212	2852	13f33ea82bc9e4e2aa380a044dcab53b.exe	9
PID 2852 wrote to memory of 1212	2852	13f33ea82bc9e4e2aa380a044dcab53b.exe	9

C:\Users\Admin\AppData\Local\Temp\13f33ea82bc9e4e2aa380a044dcab53b.exe
"C:\Users\Admin\AppData\Local\Temp\13f33ea82bc9e4e2aa380a044dcab53b.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2852

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1212

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1212-3-0x0000000002A70000-0x0000000002A71000-memory.dmp

Filesize
4KB

Download
memory/2852-0-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-16-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2852-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2852-12-0x0000000000240000-0x0000000000241000-memory.dmp

Filesize
4KB

Download