4e2acffae00d151d91fdcca93487fd7408c5f4ab92eceabe46b8490c2a92ec82

General

Target

c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
Size

223KB
MD5

c7ad51732aa729f32695bd0f40ae15de
SHA1

c470728b425f69c19bf862f22d890ff72dd6ed3b
SHA256

4e2acffae00d151d91fdcca93487fd7408c5f4ab92eceabe46b8490c2a92ec82
SHA512

00bd2c0a9ef6ad307f9f4bbab47507fdf41049b5f08a8eb02b4b2ebdf14881031898a94d2addc9177d63755fa86242f98b006657cfa3275a2b3ffe74db57787a
SSDEEP

6144:DPqo97zVRqsZnoaZP+MS9dCOPr1ZVZWoqkqX8gmefozdAxY:DP99NRqOoaZ2H3dPpZHZqX8KAmxY

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
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ISFQSKDEUH = "C:\\Windows\\SysWOW64\\serwvdrv5.exe"	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	serwvdrv5.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	c7ad51732aa729f32695bd0f40ae15de_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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	serwvdrv5.exe

Executes dropped EXE 1 IoCs

pid	Process
4652	serwvdrv5.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral2/memory/776-0-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral2/memory/776-5-0x0000000000520000-0x00000000005B1000-memory.dmp	upx
behavioral2/memory/776-7-0x0000000000520000-0x00000000005B1000-memory.dmp	upx
behavioral2/memory/776-2-0x0000000000520000-0x00000000005B1000-memory.dmp	upx
behavioral2/memory/776-6-0x0000000000520000-0x00000000005B1000-memory.dmp	upx
behavioral2/memory/776-29-0x0000000000400000-0x0000000000441000-memory.dmp	upx
behavioral2/memory/776-30-0x0000000000520000-0x00000000005B1000-memory.dmp	upx
behavioral2/memory/776-38-0x0000000000520000-0x00000000005B1000-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	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\serwvdrv5.exe	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
File opened for modification	C:\Windows\SysWOW64\serwvdrv5.exe	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe

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	serwvdrv5.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	c7ad51732aa729f32695bd0f40ae15de_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
3660	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4652	serwvdrv5.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 776 wrote to memory of 4652	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	85
PID 776 wrote to memory of 4652	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	85
PID 776 wrote to memory of 4652	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	85
PID 776 wrote to memory of 3608	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	87
PID 776 wrote to memory of 3608	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	87
PID 776 wrote to memory of 3608	776	c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe	87
PID 4652 wrote to memory of 3660	4652	serwvdrv5.exe	89
PID 4652 wrote to memory of 3660	4652	serwvdrv5.exe	89
PID 4652 wrote to memory of 3660	4652	serwvdrv5.exe	89

C:\Users\Admin\AppData\Local\Temp\c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c7ad51732aa729f32695bd0f40ae15de_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:776
- C:\Windows\SysWOW64\serwvdrv5.exe
  C:\Windows\SysWOW64\serwvdrv5.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:4652
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - System Location Discovery: System Language Discovery
    - Gathers network information
    PID:3660
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins2531.bat "C:\Users\Admin\AppData\Local\Temp\c7ad51732aa729f32695bd0f40ae15de_JaffaCakes118.exe"
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3608

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins2531.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\serwvdrv5.exe

Filesize
78KB

MD5
eedf4046db6ab0fc47e10abaea01274e

SHA1
fd7981c6105a04f1e59bf2a01373e383173d6851

SHA256
a5e144aa4efad7e858be4ec63843ff99f074f161a91ab6d65643b052cbd7427e

SHA512
d29480585903f0c7fe25f9a06e9cdd3de59ab3bdaa529aa08d666d8bc5ce33c78ec72d3ea74c350f0fbb4a49d9b60732efac0a5c928be963b4ca79153111477e

Download Submit
memory/776-7-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/776-2-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/776-8-0x0000000000680000-0x0000000000681000-memory.dmp

Filesize
4KB

Download
memory/776-6-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/776-0-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/776-5-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/776-1-0x00000000001C0000-0x00000000001ED000-memory.dmp

Filesize
180KB

Download
memory/776-29-0x0000000000400000-0x0000000000441000-memory.dmp

Filesize
260KB

Download
memory/776-30-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download
memory/776-38-0x0000000000520000-0x00000000005B1000-memory.dmp

Filesize
580KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads