blackmoon | ba1bae585d31cc86d1ac1b36b6022ad97b6af45922c8edf609e0ce656090a5c5

Analysis

max time kernel
142s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20230831-en
resource tags

arch:x64arch:x86image:win10v2004-20230831-enlocale:en-usos:windows10-2004-x64system
submitted
04/09/2023, 14:34

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General

Target

ba1bae585d31cc86d1ac1b36b6022ad97b6af45922c8edf609e0ce656090a5c5.dll
Size

2.6MB
MD5

1efe4082d5b71e8dbfb6f82f18174770
SHA1

1deb9b094611a1ce8d674de8fd084f75fddd7442
SHA256

ba1bae585d31cc86d1ac1b36b6022ad97b6af45922c8edf609e0ce656090a5c5
SHA512

0ecf85655ddecb499c8e560fbc362199ac1e81c5960e966fb7b30ce6b54f5434d5c1188e20bf761254500b62639747c001f9169f8ac30fb956e9b46c2993485b
SSDEEP

49152:ueFQHevutBDJbCBW6YmSPeZwB0Vd1KscNL218oNdHHt6ZMczoOUTw9UwU/I+eLRh:uee+vutFBCBW6tZwBu1KsiL218edn0+Z

Score

10^/10

blackmoon banker persistence trojan upx

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/4988-4-0x0000000002710000-0x0000000002735000-memory.dmp	family_blackmoon

Blocklisted process makes network request 2 IoCs

flow	pid	Process
31	4988	rundll32.exe
34	4988	rundll32.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4988-0-0x0000000074DD0000-0x00000000752CD000-memory.dmp	upx
behavioral2/memory/4988-26-0x0000000074DD0000-0x00000000752CD000-memory.dmp	upx
behavioral2/memory/4988-38-0x0000000074DD0000-0x00000000752CD000-memory.dmp	upx
behavioral2/memory/4988-39-0x0000000074DD0000-0x00000000752CD000-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\USER\S-1-5-21-528036852-1341495193-1175965888-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update = "C:\\Windows\\SysWOW64\\rundll32.exe"	rundll32.exe

Checks processor information in registry 2 TTPs 2 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	rundll32.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	rundll32.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe
4988	rundll32.exe

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 4292 wrote to memory of 4988	4292	rundll32.exe	85
PID 4292 wrote to memory of 4988	4292	rundll32.exe	85
PID 4292 wrote to memory of 4988	4292	rundll32.exe	85

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\ba1bae585d31cc86d1ac1b36b6022ad97b6af45922c8edf609e0ce656090a5c5.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:4292
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\ba1bae585d31cc86d1ac1b36b6022ad97b6af45922c8edf609e0ce656090a5c5.dll,#1
  2⤵
  - Blocklisted process makes network request
  - Adds Run key to start application
  - Checks processor information in registry
  - Suspicious behavior: EnumeratesProcesses
  PID:4988

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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/4988-0-0x0000000074DD0000-0x00000000752CD000-memory.dmp

Filesize
5.0MB

Download
memory/4988-1-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-4-0x0000000002710000-0x0000000002735000-memory.dmp

Filesize
148KB

Download
memory/4988-8-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-9-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-10-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-11-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-12-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-13-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-14-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-15-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-16-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-18-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-17-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-19-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-20-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-21-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-22-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-23-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-24-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-25-0x0000000010000000-0x00000000101AD000-memory.dmp

Filesize
1.7MB

Download
memory/4988-26-0x0000000074DD0000-0x00000000752CD000-memory.dmp

Filesize
5.0MB

Download
memory/4988-38-0x0000000074DD0000-0x00000000752CD000-memory.dmp

Filesize
5.0MB

Download
memory/4988-39-0x0000000074DD0000-0x00000000752CD000-memory.dmp

Filesize
5.0MB

Download