tofsee | bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee

General

Target

JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe
Size

166KB
MD5

91700c48e05518ccbc4794aae5cecda0
SHA1

1ca861daee99f49db51ec616c0e9189d5b9a6a19
SHA256

bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee
SHA512

270b780534727744ee92e1bf1cad19eeddb0c36dd57e72c0b1b3cbe690ea69acd7fbe2a9d5e2fe82b8aa10609d700ee06daca6a126d6dba7c0aab02498d3107a
SSDEEP

3072:mclL4ayATSh/zfcPnZ6MMr80mTG/5euKG/FaX:3YA+NfOZ6nr80Yzu

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
2336	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\hfwouxse\ImagePath = "C:\\Windows\\SysWOW64\\hfwouxse\\ndykequm.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_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe

Deletes itself 1 IoCs

pid	Process
2536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4752	ndykequm.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4752 set thread context of 2536	4752	ndykequm.exe	109

Launches sc.exe 3 IoCs

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

pid	Process
3160	sc.exe
884	sc.exe
4252	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
1288	1608	WerFault.exe	84
3952	4752	WerFault.exe	96

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ndykequm.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1608 wrote to memory of 2416	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	86
PID 1608 wrote to memory of 2416	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	86
PID 1608 wrote to memory of 2416	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	86
PID 1608 wrote to memory of 3172	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	88
PID 1608 wrote to memory of 3172	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	88
PID 1608 wrote to memory of 3172	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	88
PID 1608 wrote to memory of 3160	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	90
PID 1608 wrote to memory of 3160	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	90
PID 1608 wrote to memory of 3160	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	90
PID 1608 wrote to memory of 884	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	92
PID 1608 wrote to memory of 884	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	92
PID 1608 wrote to memory of 884	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	92
PID 1608 wrote to memory of 4252	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	94
PID 1608 wrote to memory of 4252	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	94
PID 1608 wrote to memory of 4252	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	94
PID 1608 wrote to memory of 2336	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	97
PID 1608 wrote to memory of 2336	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	97
PID 1608 wrote to memory of 2336	1608	JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe	97
PID 4752 wrote to memory of 2536	4752	ndykequm.exe	109
PID 4752 wrote to memory of 2536	4752	ndykequm.exe	109
PID 4752 wrote to memory of 2536	4752	ndykequm.exe	109
PID 4752 wrote to memory of 2536	4752	ndykequm.exe	109
PID 4752 wrote to memory of 2536	4752	ndykequm.exe	109

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1608
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\hfwouxse\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ndykequm.exe" C:\Windows\SysWOW64\hfwouxse\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3172
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create hfwouxse binPath= "C:\Windows\SysWOW64\hfwouxse\ndykequm.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3160
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description hfwouxse "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:884
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start hfwouxse
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4252
- 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:2336
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1608 -s 1320
  2⤵
  - Program crash
  PID:1288

C:\Windows\SysWOW64\hfwouxse\ndykequm.exe
C:\Windows\SysWOW64\hfwouxse\ndykequm.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_bc99ac81a45cc17560a54197c8adab537c44666a9893daa7a3b74190ee4c4dee.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4752
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4752 -s 512
  2⤵
  - Program crash
  PID:3952

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 1608 -ip 1608
1⤵
PID:892

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 4752 -ip 4752
1⤵
PID:3544

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\ndykequm.exe

Filesize
10.6MB

MD5
230c0eb966c8ccc6290f6139f0b1e06f

SHA1
2f1d1d901099e126b0db36c08fa9644853822c1c

SHA256
64354f64803f3efcc85c74a66c04e9c0e4750717bed7784e7d40bfbe713a28ae

SHA512
2acb1f28978afbdfdf4c8e6f52c1ba5d54f443619eb7cccee0c8ed39f8cdf76a9ec6b78f0918a3f54a87d065a93de764d9eb90cd48496456d3b997dba64bf524

Download Submit
memory/1608-9-0x0000000000770000-0x0000000000783000-memory.dmp

Filesize
76KB

Download
memory/1608-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1608-2-0x0000000000770000-0x0000000000783000-memory.dmp

Filesize
76KB

Download
memory/1608-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1608-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1608-1-0x0000000000850000-0x0000000000950000-memory.dmp

Filesize
1024KB

Download
memory/2536-14-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/2536-16-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/2536-17-0x0000000000580000-0x0000000000595000-memory.dmp

Filesize
84KB

Download
memory/4752-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4752-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4752-13-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/4752-18-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads