72d779a0485360b5a636bc014d5ccf88ff4745453382ac675b968d5301f9b418

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
08-01-2024 17:29

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General

Target

4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe
Size

250KB
MD5

4c0a7ca04aac0a5abb6a0ae0d59d7a0d
SHA1

1bb69e84abfd74269e9785f5b679c30467532a14
SHA256

72d779a0485360b5a636bc014d5ccf88ff4745453382ac675b968d5301f9b418
SHA512

aa5cc1743d5443609c8b749d45066ca06193164d87bd4672eee720d097d99716d9acff4854f413dfe32c6fe7a681da25d131c546f9186592f7b327e45ded835e
SSDEEP

6144:j7y+Qfb56BBMl5yyw5CpA/7sJ5pwvP6bQ7yMP+DE827KJF:/yf6aw5krJ5i6b7MP+Dd2A

Score

6^/10

bootkit persistence

Malware Config

Signatures

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\inf\ram32xp.dll	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe
File created	C:\Windows\inf\ram65xp.dll	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe

Modifies registry class 3 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.key	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.key\ = "regfile"	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2848	AcroRd32.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
2848	AcroRd32.exe
2848	AcroRd32.exe

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2656 wrote to memory of 2788	2656	4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe	28
PID 2720 wrote to memory of 2848	2720	explorer.exe	30
PID 2720 wrote to memory of 2848	2720	explorer.exe	30
PID 2720 wrote to memory of 2848	2720	explorer.exe	30
PID 2720 wrote to memory of 2848	2720	explorer.exe	30

C:\Users\Admin\AppData\Local\Temp\4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe
"C:\Users\Admin\AppData\Local\Temp\4c0a7ca04aac0a5abb6a0ae0d59d7a0d.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2656
- C:\Windows\SysWOW64\explorer.exe
  explorer.exe "c:\FINAL_TBF2.pdf"
  2⤵
  PID:2788

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe
  "C:\Program Files (x86)\Adobe\Reader 9.0\Reader\AcroRd32.exe" "C:\FINAL_TBF2.pdf"
  2⤵
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of SetWindowsHookEx
  PID:2848

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Roaming\Adobe\Acrobat\9.0\SharedDataEvents

Filesize
3KB

MD5
490106480af6d2961fa98654dec9d6c5

SHA1
3da91a7d02a8404cee66fbd941784912fbab177b

SHA256
9ca2f80aa258410ecee593951b18f38d155efd4b4731bf989f64fb97461838eb

SHA512
ae053d0476b1a89d4fd70d1272e7a77980a8645530c874e48d8163e3bdb95365ad8a170bc4d00983a45c17c956f086e7f39fff0d67f79c97697708395f4e4138

Download Submit
memory/2656-0-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2656-1-0x0000000000230000-0x00000000002A9000-memory.dmp

Filesize
484KB

Download
memory/2656-2-0x00000000002C0000-0x00000000002F0000-memory.dmp

Filesize
192KB

Download
memory/2656-3-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2656-4-0x00000000002F0000-0x00000000002F2000-memory.dmp

Filesize
8KB

Download
memory/2656-5-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2656-7-0x0000000000400000-0x0000000000479000-memory.dmp

Filesize
484KB

Download
memory/2656-8-0x0000000000230000-0x000000000023D000-memory.dmp

Filesize
52KB

Download
memory/2656-9-0x00000000002C0000-0x00000000002F0000-memory.dmp

Filesize
192KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads