tofsee | 0f2a790e1a03008ffcd468faa2ea0e0003b18f3e45189d25e835ca6fe5eb4417

General

Target

JaffaCakes118_83d8280e972398709103e07acb5db531.exe
Size

11.1MB
MD5

83d8280e972398709103e07acb5db531
SHA1

6400f1663c65ca1a9e19b30219fda6d86d6f51ba
SHA256

0f2a790e1a03008ffcd468faa2ea0e0003b18f3e45189d25e835ca6fe5eb4417
SHA512

cf80f769c64f7520b5f55918b9911f83b6060399c386eabe866df648f58d0f335f42e5f2ff8c2a8272a40a99c54122cb26410648232d812bb89713526bf3f79d
SSDEEP

98304:0Y3333333333333333333333333333333333333333333333333333333333333X:0

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
5044	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\msbvrgvb\ImagePath = "C:\\Windows\\SysWOW64\\msbvrgvb\\kngomowg.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_83d8280e972398709103e07acb5db531.exe

Deletes itself 1 IoCs

pid	Process
452	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1600	kngomowg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1600 set thread context of 452	1600	kngomowg.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
2060	sc.exe
3896	sc.exe
2096	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
4660	1080	WerFault.exe	82
1872	1600	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	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kngomowg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_83d8280e972398709103e07acb5db531.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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 1080 wrote to memory of 2212	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	83
PID 1080 wrote to memory of 2212	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	83
PID 1080 wrote to memory of 2212	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	83
PID 1080 wrote to memory of 2416	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	85
PID 1080 wrote to memory of 2416	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	85
PID 1080 wrote to memory of 2416	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	85
PID 1080 wrote to memory of 2060	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	88
PID 1080 wrote to memory of 2060	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	88
PID 1080 wrote to memory of 2060	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	88
PID 1080 wrote to memory of 3896	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	90
PID 1080 wrote to memory of 3896	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	90
PID 1080 wrote to memory of 3896	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	90
PID 1080 wrote to memory of 2096	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	92
PID 1080 wrote to memory of 2096	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	92
PID 1080 wrote to memory of 2096	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	92
PID 1080 wrote to memory of 5044	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	95
PID 1080 wrote to memory of 5044	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	95
PID 1080 wrote to memory of 5044	1080	JaffaCakes118_83d8280e972398709103e07acb5db531.exe	95
PID 1600 wrote to memory of 452	1600	kngomowg.exe	101
PID 1600 wrote to memory of 452	1600	kngomowg.exe	101
PID 1600 wrote to memory of 452	1600	kngomowg.exe	101
PID 1600 wrote to memory of 452	1600	kngomowg.exe	101
PID 1600 wrote to memory of 452	1600	kngomowg.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83d8280e972398709103e07acb5db531.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83d8280e972398709103e07acb5db531.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1080
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\msbvrgvb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\kngomowg.exe" C:\Windows\SysWOW64\msbvrgvb\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create msbvrgvb binPath= "C:\Windows\SysWOW64\msbvrgvb\kngomowg.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83d8280e972398709103e07acb5db531.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description msbvrgvb "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start msbvrgvb
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2096
- 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:5044
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1080 -s 1036
  2⤵
  - Program crash
  PID:4660

C:\Windows\SysWOW64\msbvrgvb\kngomowg.exe
C:\Windows\SysWOW64\msbvrgvb\kngomowg.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_83d8280e972398709103e07acb5db531.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1600
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:452
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1600 -s 512
  2⤵
  - Program crash
  PID:1872

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1080 -ip 1080
1⤵
PID:2516

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 1600 -ip 1600
1⤵
PID:4504

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\kngomowg.exe

Filesize
13.0MB

MD5
12025b24b8aa356413d8bebae612a09c

SHA1
d6ab7e9cb72ee720fcae13aeda3f00967bc3bf58

SHA256
34431868d31a1ffa41cfe76ad8fbc0ca9eca90e08c8105bac4c1fbfe4d25a0f6

SHA512
10f8d33c7664fd6e2ffee71da9c5abf532146b763457684e146e40c9c2718e36e46fdfdbfc0897b1afe4730a36e208cc53bc00dc5249638e05bfe5f7f673df26

Download Submit
memory/452-14-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/452-17-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/452-16-0x00000000010A0000-0x00000000010B5000-memory.dmp

Filesize
84KB

Download
memory/1080-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1080-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1080-1-0x00000000005E0000-0x00000000006E0000-memory.dmp

Filesize
1024KB

Download
memory/1080-8-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1080-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1080-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1600-11-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1600-12-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1600-13-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download
memory/1600-19-0x0000000000400000-0x0000000000448000-memory.dmp

Filesize
288KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads