2effe6a977e9a2968400d19bdc3bcb28af7ea31ecd26199ec97abe40921b2a14

General

Target

bff22aae91aa4bfe11e2e37461fae880.dll
Size

40KB
MD5

bff22aae91aa4bfe11e2e37461fae880
SHA1

22330eb33bb6f4174ac04a7c7a9ef5b355f99151
SHA256

2effe6a977e9a2968400d19bdc3bcb28af7ea31ecd26199ec97abe40921b2a14
SHA512

6012bd79cff5b1e7e322e78bcd7a188efb6a2647596fc05320ac8f1bc96e28a9e8220ca909da71911fbee5d7d63f38f7eb8082c4bdf1e8d0faf5adf684b02063
SSDEEP

768:KxRXHrByjf6YEO6+GK9exwP+rER6iccRWPynKHGtj1peP3pujqsv7kZ:GHPYEOF2muQgynKmtj1pePpOqsQ

Score

7^/10

persistence upx

Malware Config

Signatures

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1940-0-0x00000000037C0000-0x00000000037DF000-memory.dmp	upx
behavioral1/memory/1940-1-0x00000000037C0000-0x00000000037DF000-memory.dmp	upx
behavioral1/memory/1940-2-0x00000000037C0000-0x00000000037DF000-memory.dmp	upx
behavioral1/memory/1940-3-0x00000000037C0000-0x00000000037DF000-memory.dmp	upx
behavioral1/memory/1940-4-0x00000000037C0000-0x00000000037DF000-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-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Run\lpc = "rundll32.exe \"C:\\Users\\Admin\\AppData\\Local\\Temp\\bff22aae91aa4bfe11e2e37461fae880.dll\", RegisterDll"	rundll32.exe

Modifies Internet Explorer Phishing Filter 1 TTPs 4 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\PhishingFilter\EnabledV8 = "0"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\PhishingFilter\ShownVerifyBalloon = "3"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\PhishingFilter	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\PhishingFilter\Enabled = "0"	rundll32.exe

Modifies Internet Explorer Protected Mode 1 TTPs 5 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\0\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\1\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\2\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2500 = "3"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2500 = "3"	rundll32.exe

Modifies Internet Explorer Protected Mode Banner 1 TTPs 1 IoCs

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\Main\NoProtectedModeBanner = "1"	rundll32.exe

Modifies Internet Explorer settings 1 TTPs 4 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\Main\TabProcGrowth = "0"	rundll32.exe
Key created	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\Security	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\Security\DisableFixSecuritySettings = "1"	rundll32.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2461186416-2307104501-1787948496-1000\Software\Microsoft\Internet Explorer\Security\DisableSecuritySettingsCheck = "1"	rundll32.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1940	rundll32.exe

Suspicious use of WriteProcessMemory 7 IoCs

description	pid	Process	procid_target
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28
PID 2772 wrote to memory of 1940	2772	rundll32.exe	28

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\bff22aae91aa4bfe11e2e37461fae880.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2772
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\bff22aae91aa4bfe11e2e37461fae880.dll,#1
  2⤵
  - Adds Run key to start application
  - Modifies Internet Explorer Phishing Filter
  - Modifies Internet Explorer Protected Mode
  - Modifies Internet Explorer Protected Mode Banner
  - Modifies Internet Explorer settings
  - Suspicious use of SetWindowsHookEx
  PID:1940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

5

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/1940-0-0x00000000037C0000-0x00000000037DF000-memory.dmp

Filesize
124KB

Download
memory/1940-1-0x00000000037C0000-0x00000000037DF000-memory.dmp

Filesize
124KB

Download
memory/1940-2-0x00000000037C0000-0x00000000037DF000-memory.dmp

Filesize
124KB

Download
memory/1940-3-0x00000000037C0000-0x00000000037DF000-memory.dmp

Filesize
124KB

Download
memory/1940-4-0x00000000037C0000-0x00000000037DF000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads