tofsee | fd853dd51a98c78662de39fb48e4f5b71febbb8cfe895e78ee7f2633305ff25a

General

Target

7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe
Size

12.1MB
MD5

7aa6741e302f84504aa52aa5a2ce4325
SHA1

677ad05e27f235bf3fa558dd4e0d83f192f3037d
SHA256

fd853dd51a98c78662de39fb48e4f5b71febbb8cfe895e78ee7f2633305ff25a
SHA512

b4bb923b7b8b4cde620f276aa30e9a7812e4c596ace88d2d5c3d2e1ace22a9c8778725e237fb2602cbf403f9b67914544ae1a350cb1af5eaa99f77a32709277b
SSDEEP

24576:hMLXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXH:hM

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
1468	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\xucfcxqq\ImagePath = "C:\\Windows\\SysWOW64\\xucfcxqq\\skppwoim.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4964	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2736	skppwoim.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2736 set thread context of 4964	2736	skppwoim.exe	113

Launches sc.exe 3 IoCs

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

pid	Process
4572	sc.exe
4364	sc.exe
3488	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
3696	4984	WerFault.exe	83
4496	2736	WerFault.exe	101

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	skppwoim.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4984 wrote to memory of 2376	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	87
PID 4984 wrote to memory of 2376	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	87
PID 4984 wrote to memory of 2376	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	87
PID 4984 wrote to memory of 4484	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	89
PID 4984 wrote to memory of 4484	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	89
PID 4984 wrote to memory of 4484	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	89
PID 4984 wrote to memory of 4572	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	93
PID 4984 wrote to memory of 4572	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	93
PID 4984 wrote to memory of 4572	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	93
PID 4984 wrote to memory of 4364	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	95
PID 4984 wrote to memory of 4364	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	95
PID 4984 wrote to memory of 4364	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	95
PID 4984 wrote to memory of 3488	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	99
PID 4984 wrote to memory of 3488	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	99
PID 4984 wrote to memory of 3488	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	99
PID 4984 wrote to memory of 1468	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	102
PID 4984 wrote to memory of 1468	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	102
PID 4984 wrote to memory of 1468	4984	7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe	102
PID 2736 wrote to memory of 4964	2736	skppwoim.exe	113
PID 2736 wrote to memory of 4964	2736	skppwoim.exe	113
PID 2736 wrote to memory of 4964	2736	skppwoim.exe	113
PID 2736 wrote to memory of 4964	2736	skppwoim.exe	113
PID 2736 wrote to memory of 4964	2736	skppwoim.exe	113

C:\Users\Admin\AppData\Local\Temp\7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4984
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xucfcxqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2376
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\skppwoim.exe" C:\Windows\SysWOW64\xucfcxqq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xucfcxqq binPath= "C:\Windows\SysWOW64\xucfcxqq\skppwoim.exe /d\"C:\Users\Admin\AppData\Local\Temp\7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4572
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xucfcxqq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4364
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xucfcxqq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3488
- 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:1468
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4984 -s 676
  2⤵
  - Program crash
  PID:3696

C:\Windows\SysWOW64\xucfcxqq\skppwoim.exe
C:\Windows\SysWOW64\xucfcxqq\skppwoim.exe /d"C:\Users\Admin\AppData\Local\Temp\7aa6741e302f84504aa52aa5a2ce4325_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2736
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4964
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2736 -s 520
  2⤵
  - Program crash
  PID:4496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4984 -ip 4984
1⤵
PID:2384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 2736 -ip 2736
1⤵
PID:1368

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\skppwoim.exe

Filesize
10.0MB

MD5
4b32ebc09b424c1de9e7418558712a47

SHA1
48044a1a576213adc9be3bd43437b6a43035f06c

SHA256
ad0a54bda113bd13d840abc99a37539df2fd70933702773ec62d5b485251033c

SHA512
62f44801c3ac01b3b1f7509525a5b6772e835eec9594fea407e1ed080be663293f6e8c2f2110efebecccd244b983d950e9bae54ac145e0cd93cd8051eda5f3d0

Download Submit
memory/2736-15-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download
memory/4964-11-0x0000000000F70000-0x0000000000F85000-memory.dmp

Filesize
84KB

Download
memory/4964-13-0x0000000000F70000-0x0000000000F85000-memory.dmp

Filesize
84KB

Download
memory/4964-14-0x0000000000F70000-0x0000000000F85000-memory.dmp

Filesize
84KB

Download
memory/4984-2-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4984-1-0x0000000002ED0000-0x0000000002FD0000-memory.dmp

Filesize
1024KB

Download
memory/4984-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4984-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4984-9-0x0000000002E10000-0x0000000002E23000-memory.dmp

Filesize
76KB

Download
memory/4984-8-0x0000000000400000-0x0000000002C6D000-memory.dmp

Filesize
40.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads