89f257a2dfba048462cebd4a907893ffcdd4e5be28e6781005d09c168786c0c2

General

Target

3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe
Size

620KB
MD5

3f9cfb67ebd2341c2c957a5b87af1889
SHA1

d7557ba41709cd6ae80ef36c8014ffc9a3648057
SHA256

89f257a2dfba048462cebd4a907893ffcdd4e5be28e6781005d09c168786c0c2
SHA512

f45d45e2fe094047ef2fee03543ae57bdc59fd7303e4a9fcf86e800de9671c05e71ac2f2e1c4bd2f0b272fbe9fee2485b76f53df0ebb2d1956541cf7c6031e2a
SSDEEP

3072:eoQuPlkT0/G1bMqPVPQ3PTB8r0Sqz2Nq2QUa3G:RJeTF1Yy1GTWOQqfG

Score

10^/10

evasion trojan

Malware Config

Signatures

Modifies security service 2 TTPs 1 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\wscsvc\Start = "4"	winserv.exe

Windows security bypass 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	winserv.exe

Looks for VMWare Tools registry key 2 TTPs 2 IoCs

evasion

Query Registry

T1012

Virtualization/Sandbox Evasion

T1497

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\VMware, Inc.\VMware Tools	winserv.exe

Deletes itself 1 IoCs

pid	Process
880	winserv.exe

Executes dropped EXE 1 IoCs

pid	Process
880	winserv.exe

Windows security modification 2 TTPs 5 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusDisableNotify = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallDisableNotify = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\AntiVirusOverride = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\FirewallOverride = "1"	winserv.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Security Center\UpdatesDisableNotify = "1"	winserv.exe

Drops file in System32 directory 5 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	winserv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	winserv.exe
File created	C:\Windows\SysWOW64\rdriv.sys	winserv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	winserv.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	winserv.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\winserv.exe	3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe
File opened for modification	C:\Windows\winserv.exe	3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe

Modifies data under HKEY_USERS 8 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Content\CachePrefix	winserv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\Cookies\CachePrefix = "Cookie:"	winserv.exe
Set value (str)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\5.0\Cache\History\CachePrefix = "Visited:"	winserv.exe
Key created	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\	winserv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\ProxyBypass = "1"	winserv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\IntranetName = "1"	winserv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\UNCAsIntranet = "1"	winserv.exe
Set value (int)	\REGISTRY\USER\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap\AutoDetect = "0"	winserv.exe

C:\Users\Admin\AppData\Local\Temp\3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\3f9cfb67ebd2341c2c957a5b87af1889_JaffaCakes118.exe"
1⤵
- Looks for VMWare Tools registry key
- Drops file in Windows directory
PID:3672

C:\Windows\winserv.exe
"C:\Windows\winserv.exe"
1⤵
- Modifies security service
- Windows security bypass
- Looks for VMWare Tools registry key
- Deletes itself
- Executes dropped EXE
- Windows security modification
- Drops file in System32 directory
- Modifies data under HKEY_USERS
PID:880

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Impair Defenses

2

T1562

Disable or Modify Tools

Modify Registry

Virtualization/Sandbox Evasion

1

T1497

Credential Access

Discovery

Query Registry

1

T1012

Virtualization/Sandbox Evasion

1

T1497

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Windows\winserv.exe

Filesize
620KB

MD5
3f9cfb67ebd2341c2c957a5b87af1889

SHA1
d7557ba41709cd6ae80ef36c8014ffc9a3648057

SHA256
89f257a2dfba048462cebd4a907893ffcdd4e5be28e6781005d09c168786c0c2

SHA512
f45d45e2fe094047ef2fee03543ae57bdc59fd7303e4a9fcf86e800de9671c05e71ac2f2e1c4bd2f0b272fbe9fee2485b76f53df0ebb2d1956541cf7c6031e2a

Download Submit
memory/880-17-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-16-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-6-0x0000000000D70000-0x0000000000D72000-memory.dmp

Filesize
8KB

Download
memory/880-23-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-9-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-10-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-11-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-12-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-22-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-13-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-14-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-21-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-18-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-19-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/880-20-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/3672-0-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download
memory/3672-1-0x0000000000670000-0x0000000000672000-memory.dmp

Filesize
8KB

Download
memory/3672-7-0x0000000000400000-0x000000000049B000-memory.dmp

Filesize
620KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads