tofsee | 4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b

General

Target

JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe
Size

153KB
MD5

f2f1e67436775229aac6ba0b6f3b6c08
SHA1

5a6ada0a661a53feddda818e50627717e072b9ad
SHA256

4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b
SHA512

6c08c15addc42cccf03e30f2fd4c29277430b48771e85d0af6268422ae6080f89e8ab85d6d21378a9a6fea15d9d232d4cd499c4842ff2ec2846457106b608c91
SSDEEP

3072:R1R6lArEn32yLOoX8p/r5HHcN+n02PO10Oyz:R76WU3hau82WtxOc

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
3676	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\uikhlris\ImagePath = "C:\\Windows\\SysWOW64\\uikhlris\\uokqbldj.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-1-5-21-4050598569-1597076380-177084960-1000\Control Panel\International\Geo\Nation	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe

Deletes itself 1 IoCs

pid	Process
3744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2036	uokqbldj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2036 set thread context of 3744	2036	uokqbldj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3172	sc.exe
2912	sc.exe
3520	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
2148	3280	WerFault.exe	81
2144	2036	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	cmd.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	uokqbldj.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3280 wrote to memory of 4628	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	82
PID 3280 wrote to memory of 4628	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	82
PID 3280 wrote to memory of 4628	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	82
PID 3280 wrote to memory of 3052	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	84
PID 3280 wrote to memory of 3052	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	84
PID 3280 wrote to memory of 3052	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	84
PID 3280 wrote to memory of 3172	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	86
PID 3280 wrote to memory of 3172	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	86
PID 3280 wrote to memory of 3172	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	86
PID 3280 wrote to memory of 2912	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	88
PID 3280 wrote to memory of 2912	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	88
PID 3280 wrote to memory of 2912	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	88
PID 3280 wrote to memory of 3520	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	90
PID 3280 wrote to memory of 3520	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	90
PID 3280 wrote to memory of 3520	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	90
PID 3280 wrote to memory of 3676	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	93
PID 3280 wrote to memory of 3676	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	93
PID 3280 wrote to memory of 3676	3280	JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe	93
PID 2036 wrote to memory of 3744	2036	uokqbldj.exe	98
PID 2036 wrote to memory of 3744	2036	uokqbldj.exe	98
PID 2036 wrote to memory of 3744	2036	uokqbldj.exe	98
PID 2036 wrote to memory of 3744	2036	uokqbldj.exe	98
PID 2036 wrote to memory of 3744	2036	uokqbldj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uikhlris\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4628
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uokqbldj.exe" C:\Windows\SysWOW64\uikhlris\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uikhlris binPath= "C:\Windows\SysWOW64\uikhlris\uokqbldj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uikhlris "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2912
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uikhlris
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3520
- 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:3676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3280 -s 1036
  2⤵
  - Program crash
  PID:2148

C:\Windows\SysWOW64\uikhlris\uokqbldj.exe
C:\Windows\SysWOW64\uikhlris\uokqbldj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4f9d298e9a7614df6b3d55887d8e0008fabef0b0b55b764ac6bcb781c7d0774b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2036
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2036 -s 520
  2⤵
  - Program crash
  PID:2144

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3280 -ip 3280
1⤵
PID:4696

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 2036 -ip 2036
1⤵
PID:1960

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\uokqbldj.exe

Filesize
13.5MB

MD5
5a05a896941f07af464692c52189611f

SHA1
a0d66ea347cf036f415376f3e8dd176c45c0142a

SHA256
f6da1f85d529aec4e322461315312776e3ef866eb0b5decfd42dd75beca7d90e

SHA512
8d0ec7518454a51e7ff6ce2e3786d834df8d36bde65ba6873570be763807a2d676e24c1f25500e6978aa8aa2613b7ee4b19894bbf097b45427ee4713064340ad

Download Submit
memory/2036-11-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2036-13-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2036-12-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/2036-18-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3280-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3280-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download
memory/3280-8-0x0000000000400000-0x00000000004AD000-memory.dmp

Filesize
692KB

Download
memory/3280-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3280-9-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/3280-2-0x0000000000650000-0x0000000000663000-memory.dmp

Filesize
76KB

Download
memory/3744-14-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/3744-16-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/3744-17-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads