tofsee | a766c56d729f2d60d7420c27cc346dd2b360e2b620061ceccd86c3efaafa3d21

General

Target

JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe
Size

10.0MB
MD5

8f0c7ed7dee073b4d77ebc9ae3e91730
SHA1

9859b88ddf30f3ad0275f1af5595cc175aa72808
SHA256

a766c56d729f2d60d7420c27cc346dd2b360e2b620061ceccd86c3efaafa3d21
SHA512

d55db62d314bb0f1fbfba9e33345098877c4985a1a139159422fb2fdcf70b1cbef271748fd13a2f467b3c42423c90c386ccccc0ced0e1bf63044a04bf4397cfd
SSDEEP

49152:cvqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqS:c

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
3524	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\mfurhtxi\ImagePath = "C:\\Windows\\SysWOW64\\mfurhtxi\\chgeuajy.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe

Deletes itself 1 IoCs

pid	Process
5000	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2300	chgeuajy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2300 set thread context of 5000	2300	chgeuajy.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2740	sc.exe
3264	sc.exe
3544	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
4520	2944	WerFault.exe	82
840	2300	WerFault.exe	93

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	chgeuajy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.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	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	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2944 wrote to memory of 2424	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	83
PID 2944 wrote to memory of 2424	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	83
PID 2944 wrote to memory of 2424	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	83
PID 2944 wrote to memory of 3040	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	85
PID 2944 wrote to memory of 3040	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	85
PID 2944 wrote to memory of 3040	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	85
PID 2944 wrote to memory of 2740	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	87
PID 2944 wrote to memory of 2740	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	87
PID 2944 wrote to memory of 2740	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	87
PID 2944 wrote to memory of 3264	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	89
PID 2944 wrote to memory of 3264	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	89
PID 2944 wrote to memory of 3264	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	89
PID 2944 wrote to memory of 3544	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	91
PID 2944 wrote to memory of 3544	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	91
PID 2944 wrote to memory of 3544	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	91
PID 2944 wrote to memory of 3524	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	94
PID 2944 wrote to memory of 3524	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	94
PID 2944 wrote to memory of 3524	2944	JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe	94
PID 2300 wrote to memory of 5000	2300	chgeuajy.exe	100
PID 2300 wrote to memory of 5000	2300	chgeuajy.exe	100
PID 2300 wrote to memory of 5000	2300	chgeuajy.exe	100
PID 2300 wrote to memory of 5000	2300	chgeuajy.exe	100
PID 2300 wrote to memory of 5000	2300	chgeuajy.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mfurhtxi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2424
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\chgeuajy.exe" C:\Windows\SysWOW64\mfurhtxi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3040
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mfurhtxi binPath= "C:\Windows\SysWOW64\mfurhtxi\chgeuajy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mfurhtxi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3264
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mfurhtxi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3544
- 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:3524
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2944 -s 656
  2⤵
  - Program crash
  PID:4520

C:\Windows\SysWOW64\mfurhtxi\chgeuajy.exe
C:\Windows\SysWOW64\mfurhtxi\chgeuajy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8f0c7ed7dee073b4d77ebc9ae3e91730.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2300
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5000
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2300 -s 524
  2⤵
  - Program crash
  PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2944 -ip 2944
1⤵
PID:3276

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2300 -ip 2300
1⤵
PID:216

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\chgeuajy.exe

Filesize
11.8MB

MD5
1aec4107d86cd0c5cccd8435a55a5e19

SHA1
484e25f8eae0c5d943aa7571abb386de216a75d8

SHA256
5d38e8902c25dce5340fe6b6f7a0a2762e90765967d59fb31545ec23d8b6399d

SHA512
94cb1c58361fcc70227ceab7661ef4527d7f1773d701077f3022d07e4e5b4ccb4e6f8c915933dd87e47d2178fa0c6907efec1187b78054bc5db0cf7029a78d82

Download Submit
memory/2300-14-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2300-16-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/2944-1-0x0000000001870000-0x0000000001970000-memory.dmp

Filesize
1024KB

Download
memory/2944-2-0x0000000003410000-0x0000000003423000-memory.dmp

Filesize
76KB

Download
memory/2944-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2944-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2944-9-0x0000000003410000-0x0000000003423000-memory.dmp

Filesize
76KB

Download
memory/2944-8-0x0000000000400000-0x00000000016BC000-memory.dmp

Filesize
18.7MB

Download
memory/5000-11-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/5000-13-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download
memory/5000-15-0x0000000000120000-0x0000000000135000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads