tofsee | 99bdf7a088252ed99a70a040d9453d7081a72d08ed1d76e3b2595f768803554c

General

Target

7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe
Size

12.3MB
MD5

7454b1a70a8f8acf82a9c2f9302d48d8
SHA1

38727c4e426faca0db4da54f73511eb10df8c22c
SHA256

99bdf7a088252ed99a70a040d9453d7081a72d08ed1d76e3b2595f768803554c
SHA512

10e31fbf5966bd7146490dbfe2e6d6582f5458e10c9fc33e1e8e1d7b86da10af30e2ea10ff180e5c70b3bb524ba2404d0d912ff6969c0f4627281e6bba8c349f
SSDEEP

24576:KyNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNhNn:

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
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
3376	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\cjwmvmsr\ImagePath = "C:\\Windows\\SysWOW64\\cjwmvmsr\\hbkuhkpb.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
988	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2944	hbkuhkpb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2944 set thread context of 988	2944	hbkuhkpb.exe	108

Launches sc.exe 3 IoCs

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

pid	Process
5020	sc.exe
2608	sc.exe
3144	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 opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1044	4020	WerFault.exe	83
4484	2944	WerFault.exe	101

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hbkuhkpb.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7454b1a70a8f8acf82a9c2f9302d48d8_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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4020 wrote to memory of 732	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	87
PID 4020 wrote to memory of 732	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	87
PID 4020 wrote to memory of 732	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	87
PID 4020 wrote to memory of 2076	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	91
PID 4020 wrote to memory of 2076	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	91
PID 4020 wrote to memory of 2076	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	91
PID 4020 wrote to memory of 2608	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	93
PID 4020 wrote to memory of 2608	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	93
PID 4020 wrote to memory of 2608	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	93
PID 4020 wrote to memory of 3144	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	97
PID 4020 wrote to memory of 3144	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	97
PID 4020 wrote to memory of 3144	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	97
PID 4020 wrote to memory of 5020	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	99
PID 4020 wrote to memory of 5020	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	99
PID 4020 wrote to memory of 5020	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	99
PID 4020 wrote to memory of 3376	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	102
PID 4020 wrote to memory of 3376	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	102
PID 4020 wrote to memory of 3376	4020	7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe	102
PID 2944 wrote to memory of 988	2944	hbkuhkpb.exe	108
PID 2944 wrote to memory of 988	2944	hbkuhkpb.exe	108
PID 2944 wrote to memory of 988	2944	hbkuhkpb.exe	108
PID 2944 wrote to memory of 988	2944	hbkuhkpb.exe	108
PID 2944 wrote to memory of 988	2944	hbkuhkpb.exe	108

C:\Users\Admin\AppData\Local\Temp\7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4020
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\cjwmvmsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:732
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hbkuhkpb.exe" C:\Windows\SysWOW64\cjwmvmsr\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2076
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create cjwmvmsr binPath= "C:\Windows\SysWOW64\cjwmvmsr\hbkuhkpb.exe /d\"C:\Users\Admin\AppData\Local\Temp\7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2608
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description cjwmvmsr "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3144
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start cjwmvmsr
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5020
- 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:3376
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4020 -s 1264
  2⤵
  - Program crash
  PID:1044

C:\Windows\SysWOW64\cjwmvmsr\hbkuhkpb.exe
C:\Windows\SysWOW64\cjwmvmsr\hbkuhkpb.exe /d"C:\Users\Admin\AppData\Local\Temp\7454b1a70a8f8acf82a9c2f9302d48d8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:988
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 512
  2⤵
  - Program crash
  PID:4484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4020 -ip 4020
1⤵
PID:3152

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 480 -p 2944 -ip 2944
1⤵
PID:3980

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\hbkuhkpb.exe

Filesize
13.8MB

MD5
4c24c4c5830066769213df64928ca4c1

SHA1
c9cf2a4fc2dafa16f2c81e22ebe3155e004719e7

SHA256
c7c2aa585c368edd91bd2462db3872db8acfd2e145c2b8edcc8a48f60f6439d1

SHA512
82f3d851eae096f8a864bddba23fa268485c653bbf0008952f3340775be42c094f8b0ebe230f3d9e59ec8955183f3194324f4dfa4ba9d51c30b8ce87e9d75021

Download Submit
memory/988-14-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/988-17-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/988-16-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/2944-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2944-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2944-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2944-19-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4020-9-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/4020-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4020-2-0x0000000000760000-0x0000000000773000-memory.dmp

Filesize
76KB

Download
memory/4020-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4020-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4020-1-0x0000000000810000-0x0000000000910000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads