tofsee | fbc03327661ed973c859257eb8ad4941108669c968de30a2ef77af775fe0e960

General

Target

de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe
Size

11.6MB
MD5

de5f0b876145c3072389c0af52539a06
SHA1

8fcb3d87bdb58c8f5eb5cd5d439fb08c88e19c23
SHA256

fbc03327661ed973c859257eb8ad4941108669c968de30a2ef77af775fe0e960
SHA512

858c78636b4c50791353b11df415e51bb8e3a2da4e2cda94ec2468a611db42ce30c3c3af3fa402825b2010eaad6f982088b293ddcc592726531933a4549092fc
SSDEEP

49152:L88888888888888888888888888888888888888888888888888888888888888T:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2908	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\ljguclke\ImagePath = "C:\\Windows\\SysWOW64\\ljguclke\\uhyhzmoi.exe"	svchost.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4372	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2860	uhyhzmoi.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2860 set thread context of 4372	2860	uhyhzmoi.exe	103

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4396	sc.exe
624	sc.exe
4320	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3124	4992	WerFault.exe	82
4692	2860	WerFault.exe	94

System Location Discovery: System Language Discovery 1 TTPs 9 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	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhyhzmoi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 2232	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	83
PID 4992 wrote to memory of 2232	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	83
PID 4992 wrote to memory of 2232	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	83
PID 4992 wrote to memory of 3668	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	85
PID 4992 wrote to memory of 3668	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	85
PID 4992 wrote to memory of 3668	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	85
PID 4992 wrote to memory of 4396	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	88
PID 4992 wrote to memory of 4396	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	88
PID 4992 wrote to memory of 4396	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	88
PID 4992 wrote to memory of 624	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	90
PID 4992 wrote to memory of 624	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	90
PID 4992 wrote to memory of 624	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	90
PID 4992 wrote to memory of 4320	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	92
PID 4992 wrote to memory of 4320	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	92
PID 4992 wrote to memory of 4320	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	92
PID 4992 wrote to memory of 2908	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	95
PID 4992 wrote to memory of 2908	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	95
PID 4992 wrote to memory of 2908	4992	de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe	95
PID 2860 wrote to memory of 4372	2860	uhyhzmoi.exe	103
PID 2860 wrote to memory of 4372	2860	uhyhzmoi.exe	103
PID 2860 wrote to memory of 4372	2860	uhyhzmoi.exe	103
PID 2860 wrote to memory of 4372	2860	uhyhzmoi.exe	103
PID 2860 wrote to memory of 4372	2860	uhyhzmoi.exe	103

C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ljguclke\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2232
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uhyhzmoi.exe" C:\Windows\SysWOW64\ljguclke\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3668
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ljguclke binPath= "C:\Windows\SysWOW64\ljguclke\uhyhzmoi.exe /d\"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4396
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ljguclke "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ljguclke
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4320
- C:\Windows\SysWOW64\netsh.exe
  "C:\Windows\System32\netsh.exe" advfirewall firewall add rule name="Host-process for services of Windows" dir=in action=allow program="C:\Windows\SysWOW64\svchost.exe" enable=yes>nul
  2⤵
  - Modifies Windows Firewall
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 1148
  2⤵
  - Program crash
  PID:3124

C:\Windows\SysWOW64\ljguclke\uhyhzmoi.exe
C:\Windows\SysWOW64\ljguclke\uhyhzmoi.exe /d"C:\Users\Admin\AppData\Local\Temp\de5f0b876145c3072389c0af52539a06_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4372
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2860 -s 520
  2⤵
  - Program crash
  PID:4692

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4992 -ip 4992
1⤵
PID:2884

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 488 -p 2860 -ip 2860
1⤵
PID:3440

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

Defense Evasion

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

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\uhyhzmoi.exe

Filesize
12.9MB

MD5
674d292adc7f3fbce2fda3ff8a5b53fa

SHA1
a51176c40115ffbfaaa1229f25e0e587801b95f9

SHA256
3e5f01470a87c57bc596c4809fa1e1eb98d1abbf5655c4821281cdd7d7a9a26e

SHA512
c0285ce69d215aef1b022314a2dac8f10181f78f4c788b982b89621e6bce2ba0c23a5db3bbfd28daf46194eea072b4a1b27013afdb50abeec4e8f328579ed113

Download Submit
memory/2860-15-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download
memory/4372-11-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4372-13-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4372-14-0x00000000007C0000-0x00000000007D5000-memory.dmp

Filesize
84KB

Download
memory/4992-1-0x0000000002F70000-0x0000000003070000-memory.dmp

Filesize
1024KB

Download
memory/4992-2-0x0000000002F10000-0x0000000002F23000-memory.dmp

Filesize
76KB

Download
memory/4992-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4992-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4992-9-0x0000000002F10000-0x0000000002F23000-memory.dmp

Filesize
76KB

Download
memory/4992-8-0x0000000000400000-0x0000000002C68000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads