tofsee | 74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641

General

Target

JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe
Size

290KB
MD5

9946c671ddc90253608354599a3dcf42
SHA1

675c3b3e4682298fdd3120b836a68b84ee74730e
SHA256

74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641
SHA512

efcad1ff557ed3b8cf91c8e09580dfeb752f7011edc7404c95076a17285c852b154516015049d73c000a01cf2a128ae73e486a730e5b5d089364d8944b67d2c4
SSDEEP

6144:QZDhTWrhgUaxjFftGu35QZ+2PPFGrGuislc03r:QZDhTWrhgUWFfMuP0FGqb/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
3236	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\mudgfnsa\ImagePath = "C:\\Windows\\SysWOW64\\mudgfnsa\\bveobejv.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_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe

Deletes itself 1 IoCs

pid	Process
2176	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2720	bveobejv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2720 set thread context of 2176	2720	bveobejv.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3160	sc.exe
4536	sc.exe
1436	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2892	1928	WerFault.exe	82
4448	2720	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	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	bveobejv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1928 wrote to memory of 4656	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	83
PID 1928 wrote to memory of 4656	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	83
PID 1928 wrote to memory of 4656	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	83
PID 1928 wrote to memory of 3336	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	85
PID 1928 wrote to memory of 3336	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	85
PID 1928 wrote to memory of 3336	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	85
PID 1928 wrote to memory of 3160	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	87
PID 1928 wrote to memory of 3160	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	87
PID 1928 wrote to memory of 3160	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	87
PID 1928 wrote to memory of 4536	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	90
PID 1928 wrote to memory of 4536	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	90
PID 1928 wrote to memory of 4536	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	90
PID 1928 wrote to memory of 1436	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	92
PID 1928 wrote to memory of 1436	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	92
PID 1928 wrote to memory of 1436	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	92
PID 1928 wrote to memory of 3236	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	95
PID 1928 wrote to memory of 3236	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	95
PID 1928 wrote to memory of 3236	1928	JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe	95
PID 2720 wrote to memory of 2176	2720	bveobejv.exe	101
PID 2720 wrote to memory of 2176	2720	bveobejv.exe	101
PID 2720 wrote to memory of 2176	2720	bveobejv.exe	101
PID 2720 wrote to memory of 2176	2720	bveobejv.exe	101
PID 2720 wrote to memory of 2176	2720	bveobejv.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mudgfnsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4656
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bveobejv.exe" C:\Windows\SysWOW64\mudgfnsa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3336
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mudgfnsa binPath= "C:\Windows\SysWOW64\mudgfnsa\bveobejv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.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 mudgfnsa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4536
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mudgfnsa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1436
- 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:3236
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1928 -s 1184
  2⤵
  - Program crash
  PID:2892

C:\Windows\SysWOW64\mudgfnsa\bveobejv.exe
C:\Windows\SysWOW64\mudgfnsa\bveobejv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_74125bebe72f5fb29914fbdd87b8e8083cbb1a285310f0ec1a942c74adc4b641.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2720
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2176
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2720 -s 512
  2⤵
  - Program crash
  PID:4448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 1928 -ip 1928
1⤵
PID:3652

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2720 -ip 2720
1⤵
PID:4712

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\bveobejv.exe

Filesize
12.9MB

MD5
c2d3c35ce3d063b759f33aab9f328796

SHA1
23886fa77bcd7e997aa7b49731372757d62221e5

SHA256
10a319e38146953d67fdc36ea1fe6df91ca4995bb587dd691a353c1f05832c95

SHA512
d00b32bfd08a1176d831202f7536e3806d3a4a18d9d4d380864bc2317a65c391b001667dcd0ab3e9f3933bee6f6c7c95e955db6e291b7736ae9677e7522bb538

Download Submit
memory/1928-1-0x0000000000C20000-0x0000000000D20000-memory.dmp

Filesize
1024KB

Download
memory/1928-2-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/1928-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-8-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/1928-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1928-9-0x00000000009C0000-0x00000000009D3000-memory.dmp

Filesize
76KB

Download
memory/2176-11-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/2176-14-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/2176-16-0x0000000000FE0000-0x0000000000FF5000-memory.dmp

Filesize
84KB

Download
memory/2720-15-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download
memory/2720-12-0x0000000000400000-0x0000000000878000-memory.dmp

Filesize
4.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads