017282b1970211d55c95ad8ea2ee88c68648a1a32b17327559d0b778182e633b

General

Target

0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
Size

244KB
MD5

0736ce394c11750fadf16cc8ddadda3d
SHA1

6b118c90c59818d337792eb19cdbaeaf3a870d27
SHA256

017282b1970211d55c95ad8ea2ee88c68648a1a32b17327559d0b778182e633b
SHA512

b8a6b16a80df1886d9d93f3b193018f2e800be2636355e955120af8761fd6bba41088a242c9ceaa3349cd8e58e6ac5f65fd5b62612756349018283eb78e83307
SSDEEP

6144:FyMsJzVrZ2MW3kyDhZI/NnAHZaeKmeGdEjlbZebhrRBPMB++:F8JyvUyDbMnA56f2hFBPMv

Score

8^/10

discovery evasion persistence trojan upx

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 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	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ngaj = "C:\\Windows\\SysWOW64\\Dsuil.exe"	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	Dsuil.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	Dsuil.exe

Executes dropped EXE 1 IoCs

pid	Process
1644	Dsuil.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1604-0-0x0000000000400000-0x0000000000449000-memory.dmp	upx
behavioral2/memory/1604-2-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-5-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-6-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-8-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-7-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-22-0x0000000000480000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/1604-34-0x0000000000480000-0x000000000050F000-memory.dmp	upx

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Dsuil.exe	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\Dsuil.exe	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command and Scripting Interpreter

T1059

pid	Process
636	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1644	Dsuil.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1604 wrote to memory of 1644	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	81
PID 1604 wrote to memory of 1644	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	81
PID 1604 wrote to memory of 1644	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	81
PID 1604 wrote to memory of 428	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	83
PID 1604 wrote to memory of 428	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	83
PID 1604 wrote to memory of 428	1604	0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe	83
PID 1644 wrote to memory of 636	1644	Dsuil.exe	85
PID 1644 wrote to memory of 636	1644	Dsuil.exe	85
PID 1644 wrote to memory of 636	1644	Dsuil.exe	85

C:\Users\Admin\AppData\Local\Temp\0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1604
- C:\Windows\SysWOW64\Dsuil.exe
  C:\Windows\SysWOW64\Dsuil.exe
  2⤵
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1644
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:636
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins5093.bat "C:\Users\Admin\AppData\Local\Temp\0736ce394c11750fadf16cc8ddadda3d_JaffaCakes118.exe"
  2⤵
  PID:428

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Command and Scripting Interpreter

1

T1059

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

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins5093.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Windows\SysWOW64\Dsuil.exe

Filesize
82KB

MD5
6f5f3bb1b50fc2b1153c107518e853a8

SHA1
092e5a2fbb7709420c9122f288d5f2bd5d37fd46

SHA256
b43bc542382c4d428e920e0e280840531b7afc37009d4298803fa0c83461518f

SHA512
cec6986bfb86f1cf1a44f7e69298c11ae1d6d6e52980472c8404c54544bf83794f93d56708bdfb36258626ed712ef01e2f43da485647daac2cd5d580c74edbdd

Download Submit
memory/1604-1-0x0000000000450000-0x000000000047E000-memory.dmp

Filesize
184KB

Download
memory/1604-0-0x0000000000400000-0x0000000000449000-memory.dmp

Filesize
292KB

Download
memory/1604-2-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-5-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-6-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-8-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-9-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/1604-7-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-22-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download
memory/1604-34-0x0000000000480000-0x000000000050F000-memory.dmp

Filesize
572KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads