43b377ad4d39ee0c6a29f9e1610932eb0008c1e9a55d3bdb1743968b16bfbc76

Analysis

max time kernel
120s
max time network
121s
platform
windows7_x64
resource
win7-20240704-en
resource tags

arch:x64arch:x86image:win7-20240704-enlocale:en-usos:windows7-x64system
submitted
18-08-2024 20:41

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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

Deletes itself 1 IoCs

pid	Process
2960	cmd.exe

UPX packed file 3 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1704-0-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/memory/1704-26-0x0000000000400000-0x00000000004E7000-memory.dmp	upx
behavioral1/files/0x000300000000549f-28.dat	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\ÌÔ±¦.ico	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
File created	C:\Program Files (x86)\Common Files\TaoBao\Ð¡ÓÎÏ·.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 7 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	regedit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	regedit.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a821f71990cda50d875b788a786cabea_JaffaCakes118.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 46 IoCs

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{000214F9-0000-0000-C000-000000000046}	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\.1nk	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\ShellFolder\	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
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx\{FBF23B80-E3F0-101B-8488-00AA003E56F8}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\InfoTip = "@shdoclc.dll,-881"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\LocalizedString = "@shdoclc.dll,-880"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\DefaultIcon\ = "shdoclc.dll,-190"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\Open\Command	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ShellEx	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ = "lnkfile"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellNew\Command = "rundll32.exe appwiz.cpl,NewLinkHere %1"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\DefaultIcon	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\ÊôÐÔ\Command	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\ShellEx\{BB2E617C-0920-11d1-9A0B-00C04FC2D6C1}	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\Open	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\Open\ = "´ò¿ªÖ÷Ò³(&H)"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\ÊôÐÔ\Command\ = "Rundll32.exe Shell32.dll,Control_RunDLL Inetcpl.cpl"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\ShellFolder	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\PersistentHandler	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\ÊôÐÔ\ = "ÊôÐÔ(&R)"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\ = "InternetShortcut"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.ur1\PersistentHandler\ = "{5e941d80-bf96-11cd-b579-08002b30bfeb}"	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214F9-0000-0000-C000-000000000046}\ = "{00021401-0000-0000-C000-000000000046}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellNew	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\ÊôÐÔ	regedit.exe
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\ShellFolder\Attributes = "0"	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\ShellEx\{000214EE-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\.ur1\ShellEx\{CABB0DA0-DA57-11CF-9974-0020AFD79762}\ = "{FBF23B40-E3F0-101B-8488-00AA003E56F8}"	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx	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\{000214F9-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{00021500-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}	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\.ur1\ShellEx\{00021500-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\.1nk\ShellEx\{000214EE-0000-0000-C000-000000000046}	regedit.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell	regedit.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\Wow6432Node\CLSID\{27AEF9E8-663F-0757-829C-A93675896E86}\Shell\Open\Command\ = "IEXPLORE.EXE %w%w%w.93%119%15.%c%o%m"	regedit.exe

Runs regedit.exe 3 IoCs

pid	Process
1996	regedit.exe
2728	regedit.exe
1980	regedit.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe
1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1980	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	30
PID 1704 wrote to memory of 1980	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	30
PID 1704 wrote to memory of 1980	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	30
PID 1704 wrote to memory of 1980	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	30
PID 1704 wrote to memory of 1996	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	31
PID 1704 wrote to memory of 1996	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	31
PID 1704 wrote to memory of 1996	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	31
PID 1704 wrote to memory of 1996	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	31
PID 1704 wrote to memory of 2468	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	32
PID 1704 wrote to memory of 2468	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	32
PID 1704 wrote to memory of 2468	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	32
PID 1704 wrote to memory of 2468	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	32
PID 1704 wrote to memory of 2728	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	33
PID 1704 wrote to memory of 2728	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	33
PID 1704 wrote to memory of 2728	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	33
PID 1704 wrote to memory of 2728	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	33
PID 1704 wrote to memory of 2960	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	36
PID 1704 wrote to memory of 2960	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	36
PID 1704 wrote to memory of 2960	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	36
PID 1704 wrote to memory of 2960	1704	a821f71990cda50d875b788a786cabea_JaffaCakes118.exe	36
PID 2960 wrote to memory of 2756	2960	cmd.exe	38
PID 2960 wrote to memory of 2756	2960	cmd.exe	38
PID 2960 wrote to memory of 2756	2960	cmd.exe	38
PID 2960 wrote to memory of 2756	2960	cmd.exe	38

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:1704
- 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:1980
- 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:1996
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\$$edbs.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\regedit.exe
  C:\Windows\regedit.exe /s C:\Users\Admin\AppData\Local\Temp\bbhhhik.tmp
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Runs regedit.exe
  PID:2728
- C:\Windows\SysWOW64\cmd.exe
  cmd /c C:\Users\Admin\AppData\Local\Temp\$$dmsf.bat
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2960
- - C:\Windows\SysWOW64\reg.exe
    reg delete HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\RunMRU /f
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2756

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Pre-OS Boot

T1542

Bootkit

T1542.003

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Pre-OS Boot

T1542

Bootkit

T1542.003

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\$$dmsf.bat

Filesize
629B

MD5
2c5a2d6a300e44ee04640e6d6051c5de

SHA1
68d32b6904c75cababfe109f400bd2a56c899e35

SHA256
90daa8c0c54274415efd1257374bec60ce3573fa6cca8ab20c5645b87a69dcda

SHA512
826f27907b89c8328bdf6c967db28b868b8f4fb8f2bebe8ef726d31472723c0f70b97bf62fe908f41a8601b9656532092767d6dd9b9eb68a2b501b6be807091f

Download Submit
C:\Users\Admin\AppData\Local\Temp\$$edbs.bat

Filesize
59B

MD5
0cf180f20e716094bef34db0f1a39a04

SHA1
f8e9da5d8eaf347b240a77c6a9c4f494d4fc351b

SHA256
2a72298ec1d957d1d225aec50a4e6e32c5dec2f2645f25e580304e5c7ae5bb26

SHA512
a471fee35dfc685effb46fcc37d47d7210fad3fdba7cb5342b13e11f95ae7690e4053b3399bca6da7546015a479ce55a301c6934be8bab7ec9eae5aece8bdb3b

Download Submit
C:\Users\Admin\AppData\Local\Temp\$rar10656.tmp

Filesize
1KB

MD5
f9ce5c8a3059991babf4084151caa492

SHA1
26567f89a885b0e69f24309c3e5c58e8e938f841

SHA256
e82c214f33cad1b25146758e22fd887b15f63b1a7a8d716b358c50dc5c3d4e96

SHA512
cce48827588aa5968453a8a69baeab8435083dca1d625d079b01d4f9292c7bcb85ab1217f1cf96ea301eef49b7a96a76b58413d4496f1c35e234df7c7e5c9750

Download Submit
C:\Users\Admin\AppData\Local\Temp\$rar10943.tmp

Filesize
142B

MD5
1722b85f05faa97e09cc1d98002d0711

SHA1
0a2ec5d60f6c8af838fc004e8fbb0b436437887f

SHA256
2c428a167d8dabe9b4e4e821f5d56333962208ef44bc0becbf9c968f1e583e21

SHA512
40393e3b6f958a2b0303810ba3653f55b18ff22439df78487752c92cbe0a510120b2a078b31805980ae2ceaa4465674bfc2ce03803988481fd633e2b9c3ca3b8

Download Submit
C:\Users\Admin\AppData\Local\Temp\bbhhhik.tmp

Filesize
3KB

MD5
25db315b7c4e03440fc39a45d0e696f4

SHA1
e676a65ddced682543871402c65745615866813b

SHA256
afebbcbfd45e044083133fd2f575f9cee59dbff403ae376b2d2307a89b97a26c

SHA512
d10afe733da4f6c33e2859078ca307e40cf15c0e2ddde9e48b8cb3962491cc73e6b47d2fb98c56d233bef268cf1d45ac68d5835885a8b5395ee4b0c6dd0ad3d4

Download Submit
C:\Windows\RtkSYUdp.exe

Filesize
30KB

MD5
d0cd586c5c857850a188e778b971f25a

SHA1
3f584fd89e41151c389b4701d876d2bdd2885fc2

SHA256
2f6cd2ed9806a09fecce1f96cd5b3f77fc0339ddbbb4c31aab25e85fd3f268eb

SHA512
995f539c7163e0e49c7cc4687dd29dac4ac88501410d8c9935f99d993b14bf5fe349cdcdc9f61d4f308c280536b54f54ae7d041565c73a2340881f68e7b2c41c

Download Submit
memory/1704-1-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1704-0-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download
memory/1704-26-0x0000000000400000-0x00000000004E7000-memory.dmp

Filesize
924KB

Download