654ef4bd362971bf80b70332e5ccc72bed304fbd3b034f58679acc84229a6cd5

General

Target
5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
Size 661KB
Sample241019-ex85cayfnn
SHA256 654ef4bd362971bf80b70332e5ccc72bed304fbd3b034f58679acc84229a6cd5
MD5 5ad0eee33f62776a5680f2cb19778ebb
SHA1 02b68577ff946a2ed3ffd699ab9462165ee1d022
SHA512 2b0678df78ea1e86c42a74c33939454906cb8b0219f254b9644f7c2c792eb4de458fefbbb7cfd5f52c0ea541ac7c1345ee2c843c4cddceb7325bfe689e47259a
SSDEEP 12288:p3ZWSp3H8G6It4ydJ+q9x31NXR9B98Ei+q88zPUo1A:9gocG7tDywHXR9L8Ei+q8qa
MD5 SHA1 SHA512 SSDEEP

Score

6^/10

bootkit discovery persistence upx

Malware Config

Signatures

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	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1580-0-0x0000000000400000-0x00000000004A7000-memory.dmp	upx
behavioral2/memory/1580-29-0x0000000000400000-0x00000000004A7000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\Common Files\TaoBao\ÌÔ±¦.ico	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
File created	C:\Program Files (x86)\Common Files\TaoBao\ÌÔ±¦.tmp	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe

Drops file in Windows directory 2 IoCs

description	ioc	Process
File created	C:\Windows\regsougoupy.exe	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
File created	C:\Windows\RtkSYUdp.exe	5ad0eee33f62776a5680f2cb19778ebb_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	5ad0eee33f62776a5680f2cb19778ebb_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	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe

Modifies registry class 28 IoCs

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

Runs regedit.exe 1 IoCs

pid	Process
2120	regedit.exe

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1580 wrote to memory of 2120	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	87
PID 1580 wrote to memory of 2120	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	87
PID 1580 wrote to memory of 2120	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	87
PID 1580 wrote to memory of 2072	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	88
PID 1580 wrote to memory of 2072	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	88
PID 1580 wrote to memory of 2072	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	88
PID 1580 wrote to memory of 1408	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	94
PID 1580 wrote to memory of 1408	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	94
PID 1580 wrote to memory of 1408	1580	5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe	94

C:\Users\Admin\AppData\Local\Temp\5ad0eee33f62776a5680f2cb19778ebb_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\5ad0eee33f62776a5680f2cb19778ebb_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:1580
- C:\Windows\SysWOW64\regedit.exe
  regedit /s C:\Users\Admin\AppData\Local\Temp\$rar10987.tmp
  2⤵
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Runs regedit.exe
  PID:2120
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$RAVSING.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2072
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c C:\Users\Admin\AppData\Local\Temp\$$dmsf.bat
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1408

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

$$RAVSING.bat

Path C:\Users\Admin\AppData\Local\Temp\$$RAVSING.bat
Size 253B
SHA256 7031fcb0fa967101e4d4894e9ebbac7e0ed00cc3ba57777afa02f521356530d3
MD5 cb350b29233b3440633123bb77692140
SHA1 52793f1ba4c7925d41c6e79a109080c3d12b69e6
SHA512 0e5d3b34262260b807179d6a51e2c62524d3b0a132c05c4425830d376d1002d150aa0fd8e747a67d96b8ae8145ab903892ce3eaa8245084832eefd02b31c09b8
MD5 SHA1 SHA512

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$$dmsf.bat

Path C:\Users\Admin\AppData\Local\Temp\$$dmsf.bat
Size 603B
SHA256 9ba91530e9f099ae7f9aa5bf2b3a4204ef752a617a0181268fadcaa7a618cd85
MD5 bfba78cfc7323591cf793fbff8d1cca9
SHA1 13f801b23153ffe240dffc69e702480eadc860a5
SHA512 7c7104d8dac27321ae28cde42e7fe6f14715d1f5d7c37b2e3922f729931a3f7a2783f67dd48c8c39464c0ddd20221d6e555b5a608d5307106c47d3a0034eff07
MD5 SHA1 SHA512

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$rar10987.tmp

Path C:\Users\Admin\AppData\Local\Temp\$rar10987.tmp
Size 1KB
SHA256 48ccff6cd96445619998a70fad77f5e655a9d146b93d0d160656619728c4e727
MD5 185038ec1cc9a69a109726c8989e4cf5
SHA1 bfb62037297e8533e5f3940a32fb9505acf4fe26
SHA512 bb0065a36a9bc48199943b21f3c3f10916fd15aa54201513f344464d962b5e6339e1df1b932043a914a662631f842a2f3b7a2c6e8c4e414567c5ea8ac9950391
MD5 SHA1 SHA512

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memory/1580-0-0x0000000000400000-0x00000000004A7000-memory.dmp

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memory/1580-1-0x0000000002110000-0x0000000002111000-memory.dmp

Download

memory/1580-29-0x0000000000400000-0x00000000004A7000-memory.dmp

Download

memory/1580-30-0x0000000002110000-0x0000000002111000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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