383267ce397acfe177c13126159a87e137174140585e01a7b3edfb5f89a6df41

General

Target

f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe
Size

30KB
MD5

f55458d0bae25d75c373dc44151f1202
SHA1

669cac856387720a954d4d302e5e5f6cce86caef
SHA256

383267ce397acfe177c13126159a87e137174140585e01a7b3edfb5f89a6df41
SHA512

5782336fb59ff634f8b7d075e783f4c5d3c900ff067924d60def55ae2c36d5ceeaa7c1e2c416768503cffef84ed978ed31603573c7da81a96c483bbebcf73f55
SSDEEP

768:Q/g+Z8e0PFwHd/8IacVk5efVGGscWRQYSaV1obshj5ux:Q7HyGNacQefYJXxRhj5ux

Score

8^/10

discovery persistence upx

Malware Config

Signatures

Server Software Component: Terminal Services DLL 1 TTPs 1 IoCs

persistence

Terminal Services DLL

T1505.005

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\systemdown\Parameters\ServiceDll = "C:\\Windows\\system32\\kerneldrv905_737.dll"	f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2364	svchost.exe

Loads dropped DLL 1 IoCs

pid	Process
2364	svchost.exe

Drops file in System32 directory 13 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\3FE2BD01AB6BC312BF0DADE7F797388F_F7F9B7BDCC367A8E3539D28F7D4D4BA2	svchost.exe
File created	C:\Windows\SysWOW64\kerneldrv905_737.dll	f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\Content.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCookies	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\3FE2BD01AB6BC312BF0DADE7F797388F_F7F9B7BDCC367A8E3539D28F7D4D4BA2	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\INetCache\IE	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\Local\Microsoft\Windows\History\History.IE5	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\7229E30BCFD0992128433D951137A421_4C618EC989D5DF7249A28591E581F51A	svchost.exe
File opened for modification	C:\Windows\SysWOW64\config\systemprofile\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\7229E30BCFD0992128433D951137A421_4C618EC989D5DF7249A28591E581F51A	svchost.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3272-0-0x0000000000400000-0x0000000000419000-memory.dmp	upx
behavioral2/memory/3272-4-0x0000000000400000-0x0000000000419000-memory.dmp	upx

Drops file in Windows directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\download	f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe

System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Modifies data under HKEY_USERS 9 IoCs

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

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	2364	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f55458d0bae25d75c373dc44151f1202_JaffaCakes118.exe"
1⤵
- Server Software Component: Terminal Services DLL
- Drops file in System32 directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
PID:3272

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Deletes itself
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Modifies data under HKEY_USERS
- Suspicious use of AdjustPrivilegeToken
PID:2364

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Server Software Component

1

T1505

Terminal Services DLL

1

T1505.005

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\kerneldrv905_737.dll

Filesize
68KB

MD5
a22f5f1ccab394db6f3b02ccc7e924cf

SHA1
4972938529d8d58607b0d0a22efc58adde334ba8

SHA256
2ec455b0c67dd6afe733f34d11fa75f0ee804aae161eee480116912503c5c722

SHA512
375a54e61e4179ace118668338579fd8054f4729ef4f1bec5df79b0100fd0658a7e94ff664eb1c872b53e3a6c4ecbb8ce41ecdb68426d02a4961a5a7bf25d5dd

Download Submit
memory/3272-0-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download
memory/3272-4-0x0000000000400000-0x0000000000419000-memory.dmp

Filesize
100KB

Download

Analysis

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