tofsee | fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272

General

Target

JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe
Size

284KB
MD5

8dd6b66466fba9f05854ac856a968949
SHA1

a51178b856523f5cb7e71ae1906577bb53b9f5d3
SHA256

fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272
SHA512

4092333af0319ca0fb41c1d84b1cff9c3a6a1b4b150616ade7d29016bd54a91daa5230471f15feb829e92e532ec79c33f485c15c70590cd8ebde1951ba0f8c2d
SSDEEP

6144:ntxL3jo1f1cklk4+ybAy94qJL6Kq+OOhxxdeTr/ekI:nT7E1f1ckWBybtFL6wzxd6L

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
632	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\ujelqffk\ImagePath = "C:\\Windows\\SysWOW64\\ujelqffk\\eupbvhld.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe

Deletes itself 1 IoCs

pid	Process
1388	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2924	eupbvhld.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2924 set thread context of 1388	2924	eupbvhld.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2280	sc.exe
2868	sc.exe
2628	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
740	2204	WerFault.exe	82
3484	2924	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	eupbvhld.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2204 wrote to memory of 4812	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	83
PID 2204 wrote to memory of 4812	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	83
PID 2204 wrote to memory of 4812	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	83
PID 2204 wrote to memory of 208	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	85
PID 2204 wrote to memory of 208	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	85
PID 2204 wrote to memory of 208	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	85
PID 2204 wrote to memory of 2868	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	87
PID 2204 wrote to memory of 2868	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	87
PID 2204 wrote to memory of 2868	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	87
PID 2204 wrote to memory of 2628	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	89
PID 2204 wrote to memory of 2628	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	89
PID 2204 wrote to memory of 2628	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	89
PID 2204 wrote to memory of 2280	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	91
PID 2204 wrote to memory of 2280	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	91
PID 2204 wrote to memory of 2280	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	91
PID 2204 wrote to memory of 632	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	94
PID 2204 wrote to memory of 632	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	94
PID 2204 wrote to memory of 632	2204	JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe	94
PID 2924 wrote to memory of 1388	2924	eupbvhld.exe	100
PID 2924 wrote to memory of 1388	2924	eupbvhld.exe	100
PID 2924 wrote to memory of 1388	2924	eupbvhld.exe	100
PID 2924 wrote to memory of 1388	2924	eupbvhld.exe	100
PID 2924 wrote to memory of 1388	2924	eupbvhld.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2204
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ujelqffk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4812
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\eupbvhld.exe" C:\Windows\SysWOW64\ujelqffk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ujelqffk binPath= "C:\Windows\SysWOW64\ujelqffk\eupbvhld.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2868
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ujelqffk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2628
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ujelqffk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2280
- 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:632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2204 -s 1240
  2⤵
  - Program crash
  PID:740

C:\Windows\SysWOW64\ujelqffk\eupbvhld.exe
C:\Windows\SysWOW64\ujelqffk\eupbvhld.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fb19b76d60c3c16a0b43fc757f5b82bbe1a8ca37411c9a92a3ed88b4127a7272.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2924
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1388
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2924 -s 508
  2⤵
  - Program crash
  PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2204 -ip 2204
1⤵
PID:5024

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2924 -ip 2924
1⤵
PID:2404

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\eupbvhld.exe

Filesize
13.6MB

MD5
91b112c9c85448c7bbb767b37d91b7d6

SHA1
63663526fd7a7a3d4e3fc0c9055cab6f59b39040

SHA256
302379e604748d3bc5d285820ffdcdfff18b18b6ff1184de0077edaf6d487734

SHA512
295d8b1c8b767e1c897f684362d1558bb8386174c6d0524b567150968b902be840d26900ea517b2628c64fd9e6591730bb8036d4a3b2d13a8a3e1892700917e3

Download Submit
memory/1388-14-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/1388-17-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/1388-16-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/2204-8-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2204-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2204-1-0x00000000005A0000-0x00000000006A0000-memory.dmp

Filesize
1024KB

Download
memory/2204-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2204-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2204-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2924-12-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2924-11-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2924-13-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download
memory/2924-18-0x0000000000400000-0x0000000000453000-memory.dmp

Filesize
332KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads