e0a8f0734bc0bbaf7467b8afb8a4d87f9981484632c4933df3ed233e3b7f2058

Analysis

max time kernel
122s
max time network
127s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
10/01/2024, 21:48

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General

Target

51b52b6a470305d6043a8b62d54619f3.exe
Size

13KB
MD5

51b52b6a470305d6043a8b62d54619f3
SHA1

639f6b28af1ffe7ac9573bf555d9bfa468481576
SHA256

e0a8f0734bc0bbaf7467b8afb8a4d87f9981484632c4933df3ed233e3b7f2058
SHA512

7096879d7a63e9a208af868684b523d5e50a17f4aacc427fa4a1976847be8d87915c78b8a5ca577f20871a6bf8399c5dae2c7913b45119a3ccd6f4f6b1c0b538
SSDEEP

384:mgEqaDpr1HGbt0hhFJwIWMl4HsPBhQaUxb4QsT1w4XoFTctx:7h45mp0lSIyMphQaUxsQsT1Dtx

Score

10^/10

persistence

Malware Config

Signatures

Adds autorun key to be loaded by Explorer.exe on startup 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\ShellServiceObjectDelayLoad\zrowbhdf.dll = "{434FA69C-5F0A-42e1-82B8-10AF2C8E53C6}"	51b52b6a470305d6043a8b62d54619f3.exe

Deletes itself 1 IoCs

pid	Process
2608	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
2312	51b52b6a470305d6043a8b62d54619f3.exe

Drops file in System32 directory 3 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\zrowbhdf.tmp	51b52b6a470305d6043a8b62d54619f3.exe
File opened for modification	C:\Windows\SysWOW64\zrowbhdf.tmp	51b52b6a470305d6043a8b62d54619f3.exe
File opened for modification	C:\Windows\SysWOW64\zrowbhdf.nls	51b52b6a470305d6043a8b62d54619f3.exe

Modifies registry class 4 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{434FA69C-5F0A-42e1-82B8-10AF2C8E53C6}	51b52b6a470305d6043a8b62d54619f3.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{434FA69C-5F0A-42e1-82B8-10AF2C8E53C6}\InProcServer32	51b52b6a470305d6043a8b62d54619f3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{434FA69C-5F0A-42e1-82B8-10AF2C8E53C6}\InProcServer32\ = "C:\\Windows\\SysWow64\\zrowbhdf.dll"	51b52b6a470305d6043a8b62d54619f3.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{434FA69C-5F0A-42e1-82B8-10AF2C8E53C6}\InProcServer32\ThreadingModel = "Apartment"	51b52b6a470305d6043a8b62d54619f3.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
2312	51b52b6a470305d6043a8b62d54619f3.exe

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
2312	51b52b6a470305d6043a8b62d54619f3.exe
2312	51b52b6a470305d6043a8b62d54619f3.exe
2312	51b52b6a470305d6043a8b62d54619f3.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2312 wrote to memory of 2608	2312	51b52b6a470305d6043a8b62d54619f3.exe	30
PID 2312 wrote to memory of 2608	2312	51b52b6a470305d6043a8b62d54619f3.exe	30
PID 2312 wrote to memory of 2608	2312	51b52b6a470305d6043a8b62d54619f3.exe	30
PID 2312 wrote to memory of 2608	2312	51b52b6a470305d6043a8b62d54619f3.exe	30

C:\Users\Admin\AppData\Local\Temp\51b52b6a470305d6043a8b62d54619f3.exe
"C:\Users\Admin\AppData\Local\Temp\51b52b6a470305d6043a8b62d54619f3.exe"
1⤵
- Adds autorun key to be loaded by Explorer.exe on startup
- Loads dropped DLL
- Drops file in System32 directory
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2312
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\DBED.tmp.bat
  2⤵
  - Deletes itself
  PID:2608

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\DBED.tmp.bat

Filesize
179B

MD5
bb7d50def27526a0250fe34f81c8258e

SHA1
2f306e7804402e28474f8957d4b39947cf56ad5f

SHA256
2b30c454374ca18bc2ce7a0e8644cba4730ff998c82fcede6c903ad68e59f7bd

SHA512
26a8280f396eccd175e7009faec09f875a7ef1a8d5736de786e9cf6f57a42cf983b44302afdd5fa358337f75d87ef8d0416b768befceb334f4ef305083b72a65

Download Submit
C:\Windows\SysWOW64\zrowbhdf.tmp

Filesize
2.2MB

MD5
918f247b17bd31bac33f5fc21f16f83b

SHA1
ececfe97662c5b5dcb75623f06c8b22cec08f40c

SHA256
6094746f451b19c2cbea592234dedfaab57eda2c7dcc51b99ab7f67e6ce90ede

SHA512
6570b0b4aa8e9b50f72695b942e9ae7c11432a0509821c1eb8043fee92285d36656ee465b8af7d4b2fb4a8ced4da419a3ca681b8e6acb1eb728be652696ca9a2

Download Submit
memory/2312-12-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download
memory/2312-21-0x0000000010000000-0x0000000010008000-memory.dmp

Filesize
32KB

Download