blackmoon | b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222

Analysis

max time kernel
175s
max time network
214s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
25-11-2022 19:42

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General

Target

b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe
Size

45KB
MD5

848f235a39462120b498648a516426d9
SHA1

5f81ada2243741961ed1ee995ec8d39173c852f0
SHA256

b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222
SHA512

5e4f47842e19bca52e6dd092bf40a467b8817fc857a809d9bb2df1179f5df9626fb0551d29069a1b77ff1cd64ceb143dde1ae0438c3ff7b43e2221bb6c4156d1
SSDEEP

768:SI11SSlgEVG0UnyxWlnB+WHR6jiekphMf1PZFLJ4JGcTzMbhFHZyV8o1i3yG:YSleyeQWHxzuf1RFLqJGcTobhF5yV8o8

Score

10^/10

blackmoon banker 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 3 IoCs

Processes:

resource	yara_rule
behavioral2/memory/4328-138-0x0000000000400000-0x0000000000437000-memory.dmp	family_blackmoon
behavioral2/memory/2648-139-0x0000000000400000-0x0000000000437000-memory.dmp	family_blackmoon
behavioral2/memory/4328-140-0x0000000000400000-0x0000000000437000-memory.dmp	family_blackmoon

Drops file in Drivers directory 2 IoCs

Processes:

syetom.exe

description	ioc	process
File opened for modification	C:\Windows\System32\drivers\etc\hosts.ics	syetom.exe
File created	C:\Windows\System32\drivers\etc\hosts.ics	syetom.exe

Executes dropped EXE 1 IoCs

Processes:

syetom.exe

pid process

4328 syetom.exe

pid	process
4328	syetom.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\windows\CurrentVersion\Run	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\syetom = "C:\\Program Files (x86)\\Nril\\syetom.exe"	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe

Drops file in Program Files directory 2 IoCs

Processes:

b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe

description	ioc	process
File created	C:\Program Files (x86)\Nril\syetom.exe	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe
File opened for modification	C:\Program Files (x86)\Nril\syetom.exe	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

Processes:

b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe

description	pid	process	target process
PID 2648 wrote to memory of 4328	2648	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe	syetom.exe
PID 2648 wrote to memory of 4328	2648	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe	syetom.exe
PID 2648 wrote to memory of 4328	2648	b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe	syetom.exe

C:\Users\Admin\AppData\Local\Temp\b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe
"C:\Users\Admin\AppData\Local\Temp\b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222.exe"
1⤵
- Adds Run key to start application
- Drops file in Program Files directory
- Suspicious use of WriteProcessMemory
PID:2648

C:\Program Files (x86)\Nril\syetom.exe
"C:\Program Files (x86)\Nril\syetom.exe"
2⤵
- Drops file in Drivers directory
- Executes dropped EXE
PID:4328

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

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Program Files (x86)\Nril\syetom.exe
Filesize
45KB

MD5
848f235a39462120b498648a516426d9

SHA1
5f81ada2243741961ed1ee995ec8d39173c852f0

SHA256
b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222

SHA512
5e4f47842e19bca52e6dd092bf40a467b8817fc857a809d9bb2df1179f5df9626fb0551d29069a1b77ff1cd64ceb143dde1ae0438c3ff7b43e2221bb6c4156d1

Download Submit
C:\Program Files (x86)\Nril\syetom.exe
Filesize
45KB

MD5
848f235a39462120b498648a516426d9

SHA1
5f81ada2243741961ed1ee995ec8d39173c852f0

SHA256
b8d258f2bb3939c6f23c7e0675c0b3d80373cccc0a14410b392e364fb39cd222

SHA512
5e4f47842e19bca52e6dd092bf40a467b8817fc857a809d9bb2df1179f5df9626fb0551d29069a1b77ff1cd64ceb143dde1ae0438c3ff7b43e2221bb6c4156d1

Download Submit
memory/2648-132-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2648-133-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/2648-139-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4328-134-0x0000000000000000-mapping.dmp

Download
memory/4328-138-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download
memory/4328-140-0x0000000000400000-0x0000000000437000-memory.dmp

Filesize
220KB

Download