tofsee | bb104f4d64f9a531d76f8a32cff00750975b1897faa74a6284af22bc7df9b002

General

Target

JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe
Size

11.7MB
MD5

874b4f072e4f7a9ef9fe5223fbe918ea
SHA1

f69d63c6ac97ff3765c5bf7e85c684d9f2b9227f
SHA256

bb104f4d64f9a531d76f8a32cff00750975b1897faa74a6284af22bc7df9b002
SHA512

c6b4a093eba3c715d9e3e5302c58d28d49e58813725aca183188b05230198d0be0464d51a0d9017fc4426622975c8fc660e0a4a3cbd965d1ddddedae068e46f9
SSDEEP

24576:6zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzT:

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
2080	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\bdsqzzh\ImagePath = "C:\\Windows\\SysWOW64\\bdsqzzh\\xniuoaew.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe

Deletes itself 1 IoCs

pid	Process
2468	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
812	xniuoaew.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 812 set thread context of 2468	812	xniuoaew.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3588	sc.exe
3196	sc.exe
2388	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
556	3948	WerFault.exe	81
60	812	WerFault.exe	92

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	svchost.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	xniuoaew.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3948 wrote to memory of 956	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	82
PID 3948 wrote to memory of 956	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	82
PID 3948 wrote to memory of 956	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	82
PID 3948 wrote to memory of 4948	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	84
PID 3948 wrote to memory of 4948	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	84
PID 3948 wrote to memory of 4948	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	84
PID 3948 wrote to memory of 3588	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	86
PID 3948 wrote to memory of 3588	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	86
PID 3948 wrote to memory of 3588	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	86
PID 3948 wrote to memory of 3196	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	88
PID 3948 wrote to memory of 3196	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	88
PID 3948 wrote to memory of 3196	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	88
PID 3948 wrote to memory of 2388	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	90
PID 3948 wrote to memory of 2388	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	90
PID 3948 wrote to memory of 2388	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	90
PID 3948 wrote to memory of 2080	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	93
PID 3948 wrote to memory of 2080	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	93
PID 3948 wrote to memory of 2080	3948	JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe	93
PID 812 wrote to memory of 2468	812	xniuoaew.exe	98
PID 812 wrote to memory of 2468	812	xniuoaew.exe	98
PID 812 wrote to memory of 2468	812	xniuoaew.exe	98
PID 812 wrote to memory of 2468	812	xniuoaew.exe	98
PID 812 wrote to memory of 2468	812	xniuoaew.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3948
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bdsqzzh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:956
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xniuoaew.exe" C:\Windows\SysWOW64\bdsqzzh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4948
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bdsqzzh binPath= "C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3588
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bdsqzzh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bdsqzzh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- 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:2080
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3948 -s 576
  2⤵
  - Program crash
  PID:556

C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe
C:\Windows\SysWOW64\bdsqzzh\xniuoaew.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_874b4f072e4f7a9ef9fe5223fbe918ea.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:812
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 812 -s 512
  2⤵
  - Program crash
  PID:60

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3948 -ip 3948
1⤵
PID:1740

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 812 -ip 812
1⤵
PID:1348

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\xniuoaew.exe

Filesize
12.4MB

MD5
6b451a87022dcdea41f9ca25bf6117db

SHA1
8c3d0a717f8102af5e60e171e204a05083e66c4a

SHA256
dc2c1b6dfbd86cb19facfc8920dba08fe691229d255ddd911756f954e723d474

SHA512
3dd30ab88197078ca1d2e371be42a0c652b29feedaaa083f35e742f90c8596bef6f167ed2bcb52f857cfd37577048c494e111f0d7357fdf2b30bb4dac79b8435

Download Submit
memory/812-11-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/812-18-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/812-13-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/812-12-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/2468-14-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/2468-16-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/2468-17-0x0000000000C70000-0x0000000000C85000-memory.dmp

Filesize
84KB

Download
memory/3948-8-0x0000000000400000-0x00000000004AA000-memory.dmp

Filesize
680KB

Download
memory/3948-9-0x0000000002210000-0x0000000002223000-memory.dmp

Filesize
76KB

Download
memory/3948-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3948-2-0x0000000002210000-0x0000000002223000-memory.dmp

Filesize
76KB

Download
memory/3948-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3948-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads