blackmoon | f99644c9a3a55b452e7b020a013c68bc0d7b322f375f08fff1ebbf1bfdb414bd

Analysis

max time kernel
111s
max time network
145s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
01/02/2023, 20:07

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General

Target

f99644c9a3a55b452e7b020a013c68bc0d7b322f375f08fff1ebbf1bfdb414bd.dll
Size

2.2MB
MD5

229fe93e9fb01454b5f43ed1b919f74b
SHA1

39d53f9d310edf375c0e15be64ebc98db385f75a
SHA256

f99644c9a3a55b452e7b020a013c68bc0d7b322f375f08fff1ebbf1bfdb414bd
SHA512

a1acb895b4c933d61e2c23556cb718ccb5edd221d2a60ab1baf4fe9b9cc2ea0945b4b87878af2f7fac2453daebb114709c22fec5fd66740ec64e7ef2ca563f8c
SSDEEP

24576:oe1Trm3HUloRz6OwxWNdDCVcsgYXzu+6miipvHl30HCI7JsyPAinTtdYaSO/3DkY:oe5oMzWNNcQYSFAEJJki5OaAXtQl

Score

10^/10

blackmoon banker bootkit persistence trojan

Malware Config

Signatures

Blackmoon, KrBanker
Blackmoon also known as KrBanker is banking trojan first discovered in early 2014.
trojan banker blackmoon

Detect Blackmoon payload 1 IoCs

resource	yara_rule
behavioral2/memory/836-134-0x0000000010000000-0x0000000010436000-memory.dmp	family_blackmoon

Blocklisted process makes network request 1 IoCs

flow	pid	Process
4	836	rundll32.exe

Writes to the Master Boot Record (MBR) 1 TTPs 2 IoCs

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

bootkit persistence

Bootkit

T1067

description	ioc	Process
File opened for modification	\??\PHYSICALDRIVE0	rundll32.exe
File opened for modification	\??\PhysicalDrive0	rundll32.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	836	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 5100 wrote to memory of 836	5100	rundll32.exe	81
PID 5100 wrote to memory of 836	5100	rundll32.exe	81
PID 5100 wrote to memory of 836	5100	rundll32.exe	81

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\f99644c9a3a55b452e7b020a013c68bc0d7b322f375f08fff1ebbf1bfdb414bd.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:5100
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\f99644c9a3a55b452e7b020a013c68bc0d7b322f375f08fff1ebbf1bfdb414bd.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Writes to the Master Boot Record (MBR)
  - Suspicious use of AdjustPrivilegeToken
  PID:836

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Bootkit

T1067

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/836-133-0x0000000010000000-0x0000000010436000-memory.dmp

Filesize
4.2MB

Download
memory/836-134-0x0000000010000000-0x0000000010436000-memory.dmp

Filesize
4.2MB

Download