43b377ad4d39ee0c6a29f9e1610932eb0008c1e9a55d3bdb1743968b16bfbc76

General

Target

a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
Size

917KB
MD5

a821f71990cda50d875b788a786cabea
SHA1

4fc22ce876181e032f9d90384b35b30429ad2c23
SHA256

43b377ad4d39ee0c6a29f9e1610932eb0008c1e9a55d3bdb1743968b16bfbc76
SHA512

856acc121b675824cf2efe0fbe1c5e0cdc3aa367578d67f00cbc1e64a76657d9f2d4df6230bf0ee9b53e7d6a7702b36a70456e123207918b0c249392e03bc887
SSDEEP

24576:RIa7MvMoIceaNc+IBDnAggZhefKsZKnOI5:Rg0GesGZKnf5

Score

7^/10

bootkit discovery persistence upx

Malware Config

Signatures

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/640-0-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral2/memory/640-18-0x0000000000400000-0x00000000004E7000-memory.dmp	upx

Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs

Bootkits write to the MBR to gain persistence at a level below the operating system.

bootkit persistence

Bootkit

T1542.003

description	ioc	Process
File opened for modification	\??\PhysicalDrive0	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\TaoBao\Ð¡ÓÎÏ·.ico	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
File created	C:\Program Files (x86)\Common Files\TaoBao\ÌÔ±¦.ico	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\RtkSYUdp.exe	a821f71990cda50d875b788a786cabea_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 3 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	regedit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regedit.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\software\WOW6432Node\microsoft\internet explorer\version Vector	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Modifies registry class 28 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ = "lnkfile"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{000214EE-0000-0000-C000-000000000046}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214F9-0000-0000-C000-000000000046}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214F9-0000-0000-C000-000000000046}\ = "{00021401-0000-0000-C000-000000000046}"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}\ = "{00021401-0000-0000-C000-000000000046}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214EE-0000-0000-C000-000000000046}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214EE-0000-0000-C000-000000000046}\ = "{00021401-0000-0000-C000-000000000046}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\PersistentHandler\ = "{5e941d80-bf96-11cd-b579-08002b30bfeb}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{00021500-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{CABB0DA0-DA57-11CF-9974-0020AFD79762}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{00021500-0000-0000-C000-000000000046}\ = "{00021401-0000-0000-C000-000000000046}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{00021500-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellNew	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ = "InternetShortcut"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{000214F9-0000-0000-C000-000000000046}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{00021500-0000-0000-C000-000000000046}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{FBF23B80-E3F0-101B-8488-00AA003E56F8}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\PersistentHandler	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{000214F9-0000-0000-C000-000000000046}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{CABB0DA0-DA57-11CF-9974-0020AFD79762}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{000214EE-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{FBF23B80-E3F0-101B-8488-00AA003E56F8}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellNew\Command = "rundll32.exe appwiz.cpl,NewLinkHere %1"	regedit.exe

Runs regedit.exe 2 IoCs

pid	Process
4692	regedit.exe
2288	regedit.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

pid	Process
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 640 wrote to memory of 4692	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	85
PID 640 wrote to memory of 4692	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	85
PID 640 wrote to memory of 4692	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	85
PID 640 wrote to memory of 2288	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	86
PID 640 wrote to memory of 2288	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	86
PID 640 wrote to memory of 2288	640	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	86

C:\Users\Admin\AppData\Local\Temp\a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a821f71990cda50d875b788a786cabea_JaffaCakes118.exe"
1⤵
- Writes to the Master Boot Record (MBR)
- Drops file in Program Files directory
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:640
- C:\Windows\SysWOW64\regedit.exe
  regedit /s C:\Users\Admin\AppData\Local\Temp\$rar10656.tmp
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Runs regedit.exe
  PID:4692
- C:\Windows\SysWOW64\regedit.exe
  regedit /s C:\Users\Admin\AppData\Local\Temp\$10943.tmp
  2⤵
  - System Location Discovery: System Language Discovery
  - Runs regedit.exe
  PID:2288

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Pre-OS Boot

1

T1542

Bootkit

1

T1542.003

Credential Access

Discovery

System Information Discovery

1

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\$rar10656.tmp

Filesize
1KB

MD5
f9ce5c8a3059991babf4084151caa492

SHA1
26567f89a885b0e69f24309c3e5c58e8e938f841

SHA256
e82c214f33cad1b25146758e22fd887b15f63b1a7a8d716b358c50dc5c3d4e96

SHA512
cce48827588aa5968453a8a69baeab8435083dca1d625d079b01d4f9292c7bcb85ab1217f1cf96ea301eef49b7a96a76b58413d4496f1c35e234df7c7e5c9750

Download Submit
memory/640-0-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/640-1-0x0000000002490000-0x0000000002491000-memory.dmp

Filesize
4KB

Download
memory/640-18-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/640-19-0x0000000002490000-0x0000000002491000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads