986c48a0ef9126decb77b041e0eed10fe508147e1c16737502f5dea958870409

General

Target

e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Size

53KB
MD5

e846b5080f578165bffbcb07655c32d8
SHA1

08246ce534e4f4d76863bdb84d547aa8c83dd3be
SHA256

986c48a0ef9126decb77b041e0eed10fe508147e1c16737502f5dea958870409
SHA512

755a5cbf3535ef3f88d88b339db9f805cd4b463389d8d16300222dbb63679bbc23fd315b6ba641f80849cd3b45db7693bca7ca48f822846fc5b5544654817f98
SSDEEP

1536:5m9nw/hT31GCSI6WB3IMeCn7EI50rO9nw/hT31Gl:P5T3BF6sYMF725T3m

Score

10^/10

evasion persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 4 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\o4267427.exe\""	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\j6267422.exe"	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "Explorer.exe \"C:\\Windows\\o4267427.exe\""	smss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon\Userinit = "C:\\Windows\\system32\\userinit.exe,C:\\Windows\\j6267422.exe"	smss.exe

Modifies visibility of file extensions in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\HideFileExt = "1"	smss.exe

Modifies visiblity of hidden/system files in Explorer 2 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced\ShowSuperHidden = "0"	smss.exe

Adds policy Run key to start application 2 TTPs 6 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\N4218c = "\"C:\\Windows\\_default26742.pif\""	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\f1464Adm = "\"C:\\Users\\Admin\\AppData\\Local\\dv692700x\\yesbron.com\""	smss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\N4218c = "\"C:\\Windows\\_default26742.pif\""	smss.exe
Key created	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\f1464Adm = "\"C:\\Users\\Admin\\AppData\\Local\\dv692700x\\yesbron.com\""	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe

Disables RegEdit via registry modification 2 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	smss.exe
Set value (int)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
2600	smss.exe

Loads dropped DLL 2 IoCs

pid	Process
1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\f1464Adm = "\"C:\\Windows\\system32\\s4827\\zh59927084y.exe\""	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\N4218c = "\"C:\\Windows\\j6267422.exe\""	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2721934792-624042501-2768869379-1000\Software\Microsoft\Windows\CurrentVersion\Run\f1464Adm = "\"C:\\Windows\\system32\\s4827\\zh59927084y.exe\""	smss.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\N4218c = "\"C:\\Windows\\j6267422.exe\""	smss.exe

Drops file in System32 directory 17 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\s4827\smss.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\s4827\smss.exe	smss.exe
File created	C:\Windows\SysWOW64\s4827\smss.exe	smss.exe
File opened for modification	C:\Windows\SysWOW64\c_26742k.com	smss.exe
File opened for modification	C:\Windows\SysWOW64\s4827\zh59927084y.exemsatr.bin	smss.exe
File opened for modification	C:\Windows\SysWOW64\s4827	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File created	C:\Windows\SysWOW64\s4827\zh59927084y.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\s4827	smss.exe
File created	C:\Windows\SysWOW64\s4827\winlogon.exe	smss.exe
File created	C:\Windows\SysWOW64\c_26742k.com	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\msvbvm60.dll	smss.exe
File created	C:\Windows\SysWOW64\s4827\zh59927084y.exemsatr.bin	smss.exe
File created	C:\Windows\SysWOW64\s4827\smss.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\c_26742k.com	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\s4827\zh59927084y.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\msvbvm60.dll	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\s4827\zh59927084y.exe	smss.exe

Drops file in Windows directory 9 IoCs

description	ioc	Process
File opened for modification	C:\Windows\j6267422.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File created	C:\Windows\j6267422.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\_default26742.pif	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\_default26742.pif	smss.exe
File opened for modification	C:\Windows\o4267427.exe	smss.exe
File opened for modification	C:\Windows\o4267427.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File created	C:\Windows\o4267427.exe	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File created	C:\Windows\_default26742.pif	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
File opened for modification	C:\Windows\j6267422.exe	smss.exe

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1620 wrote to memory of 2600	1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe	29
PID 1620 wrote to memory of 2600	1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe	29
PID 1620 wrote to memory of 2600	1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe	29
PID 1620 wrote to memory of 2600	1620	e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe	29

C:\Users\Admin\AppData\Local\Temp\e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\e846b5080f578165bffbcb07655c32d8_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Modifies visibility of file extensions in Explorer
- Modifies visiblity of hidden/system files in Explorer
- Adds policy Run key to start application
- Disables RegEdit via registry modification
- Loads dropped DLL
- Adds Run key to start application
- Drops file in System32 directory
- Drops file in Windows directory
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\s4827\smss.exe
  "C:\Windows\system32\s4827\smss.exe" ~Brontok~Log~
  2⤵
  - Modifies WinLogon for persistence
  - Modifies visibility of file extensions in Explorer
  - Modifies visiblity of hidden/system files in Explorer
  - Adds policy Run key to start application
  - Disables RegEdit via registry modification
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - Drops file in Windows directory
  PID:2600

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

3

T1547

Registry Run Keys / Startup Folder

2

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\c_26742k.com

Filesize
53KB

MD5
e846b5080f578165bffbcb07655c32d8

SHA1
08246ce534e4f4d76863bdb84d547aa8c83dd3be

SHA256
986c48a0ef9126decb77b041e0eed10fe508147e1c16737502f5dea958870409

SHA512
755a5cbf3535ef3f88d88b339db9f805cd4b463389d8d16300222dbb63679bbc23fd315b6ba641f80849cd3b45db7693bca7ca48f822846fc5b5544654817f98

Download Submit
memory/1620-0-0x0000000000400000-0x000000000041C040-memory.dmp

Filesize
112KB

Download
memory/1620-22-0x00000000032E0000-0x00000000032FD000-memory.dmp

Filesize
116KB

Download
memory/1620-16-0x00000000032E0000-0x00000000032EE000-memory.dmp

Filesize
56KB

Download
memory/1620-25-0x0000000000400000-0x000000000041C040-memory.dmp

Filesize
112KB

Download
memory/1620-24-0x00000000032E0000-0x00000000032FD000-memory.dmp

Filesize
116KB

Download
memory/2600-50-0x0000000000400000-0x000000000041C040-memory.dmp

Filesize
112KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads