3f8ea5fe14fba99e936b55c96c018fb1b93dfd56ca196a2edc8d2f953311b05b

General

Target

ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
Size

203KB
MD5

ff1084d7d9fa7cd2d071eeef0c36bf3f
SHA1

c6cf1719dc7b6dcb345b27a19310edbf3f832e09
SHA256

3f8ea5fe14fba99e936b55c96c018fb1b93dfd56ca196a2edc8d2f953311b05b
SHA512

2d7a2869c4fdac2e89c0bee2fcfb65af6638eb318eddd2212f752f930c0ef808d52a3290070d6e65785e5da75b0ad8437bd61663bf92d87c20d6b3922f8661ae
SSDEEP

3072:KVv58vZuZ1d9Yj/FtjHaVv1nXw3p5wHWZb7Q79vxxtfcyCOQzLhrQAG29pPlyJ:KB//uhWnXw7pM9FNCOOQB2Q

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	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\RLSTAOCK = "C:\\Windows\\SysWOW64\\osuninstl.exe"	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	osuninstl.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	ff1084d7d9fa7cd2d071eeef0c36bf3f_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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	osuninstl.exe

Executes dropped EXE 1 IoCs

pid	Process
3416	osuninstl.exe

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	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\osuninstl.exe	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\osuninstl.exe	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3848-5-0x0000000000650000-0x00000000006DD000-memory.dmp	upx
behavioral2/memory/3848-6-0x0000000000650000-0x00000000006DD000-memory.dmp	upx
behavioral2/memory/3848-4-0x0000000000650000-0x00000000006DD000-memory.dmp	upx
behavioral2/memory/3848-1-0x0000000000650000-0x00000000006DD000-memory.dmp	upx
behavioral2/memory/3848-29-0x0000000000650000-0x00000000006DD000-memory.dmp	upx
behavioral2/memory/3848-30-0x0000000000650000-0x00000000006DD000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 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	osuninstl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ipconfig.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

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
3936	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
3416	osuninstl.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3848 wrote to memory of 3416	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	82
PID 3848 wrote to memory of 3416	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	82
PID 3848 wrote to memory of 3416	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	82
PID 3848 wrote to memory of 1984	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	84
PID 3848 wrote to memory of 1984	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	84
PID 3848 wrote to memory of 1984	3848	ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe	84
PID 3416 wrote to memory of 3936	3416	osuninstl.exe	86
PID 3416 wrote to memory of 3936	3416	osuninstl.exe	86
PID 3416 wrote to memory of 3936	3416	osuninstl.exe	86

C:\Users\Admin\AppData\Local\Temp\ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ff1084d7d9fa7cd2d071eeef0c36bf3f_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
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3848
- C:\Windows\SysWOW64\osuninstl.exe
  C:\Windows\SysWOW64\osuninstl.exe
  2⤵
  - Drops file in Drivers directory
  - Checks computer location settings
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3416
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:3936
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins6656.bat "C:\Users\Admin\AppData\Local\Temp\ff1084d7d9fa7cd2d071eeef0c36bf3f_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1984

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\~unins6656.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Users\Adminxplore.exe

Filesize
2KB

MD5
a48249517f2f7a1b7e87e31b58d676d2

SHA1
e7e21a080b40af4df354e6dd2f5451b06870caf0

SHA256
18cf01cdfe2084e965e0358192de6b8fb2abdeee6ec47f00e772642e97bc5326

SHA512
fc4933d4a84671877e5c61a4b5232e6e1bb9faecb0e45bfb145f9d73be81b9047cf79ebaaaa74b95439b9559688f16f487ff1dc4cc4ba9711f3aea8357d30c73

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

Filesize
79KB

MD5
37407f9bda76153b64020409a5c0a02a

SHA1
07c40f504f84e092b4042a8338b72f8ffcdd9b1e

SHA256
e1ad5dccd9eb378d6084ccf1da87759cbf0869e4a68ac2f953a6e0b68f1ccf67

SHA512
c100c063ef5609a5953929552d16954bdb7376f64fb0b47ea4a11911f639f4969b56c7903b164329d0286ca037174bf560dc4c188f0500e2bc04a75696220c43

Download Submit
memory/3848-0-0x00000000001C0000-0x00000000001ED000-memory.dmp

Filesize
180KB

Download
memory/3848-5-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download
memory/3848-6-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download
memory/3848-4-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download
memory/3848-7-0x0000000000980000-0x0000000000981000-memory.dmp

Filesize
4KB

Download
memory/3848-1-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download
memory/3848-28-0x00000000001C0000-0x00000000001ED000-memory.dmp

Filesize
180KB

Download
memory/3848-29-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download
memory/3848-30-0x0000000000650000-0x00000000006DD000-memory.dmp

Filesize
564KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads