tofsee | c30b5eaeb203cc63fbd5396d7729ba84bdcddd44b476b29d7d7924db4ae7fb0b

General

Target

dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe
Size

12.7MB
MD5

dd2e9cb910a30a50be4635fa2620da3f
SHA1

54d5e067fa18b82731edebd159bc46262e2bf816
SHA256

c30b5eaeb203cc63fbd5396d7729ba84bdcddd44b476b29d7d7924db4ae7fb0b
SHA512

45dda2df86eac5177560ff92cc02d091eefe10ab733601a4239e4a3a3cfa309efa479b2011491b62d3cb67791a39261bc1c5618ac1c7d22b87b6965a66a43138
SSDEEP

6144:weaRFeYiZtnsLs/Xyihb124uKPoifbY/3sGIU5N5:wF7/iZtRXpu3ijwf5T

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
1148	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\olngsumm\ImagePath = "C:\\Windows\\SysWOW64\\olngsumm\\sqayyoxn.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4104	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2916	sqayyoxn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2916 set thread context of 4104	2916	sqayyoxn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3360	sc.exe
3192	sc.exe
2848	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
232	1692	WerFault.exe	81
3816	2916	WerFault.exe	92

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	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	sqayyoxn.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1692 wrote to memory of 4720	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	82
PID 1692 wrote to memory of 4720	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	82
PID 1692 wrote to memory of 4720	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	82
PID 1692 wrote to memory of 3648	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	84
PID 1692 wrote to memory of 3648	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	84
PID 1692 wrote to memory of 3648	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	84
PID 1692 wrote to memory of 3360	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	86
PID 1692 wrote to memory of 3360	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	86
PID 1692 wrote to memory of 3360	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	86
PID 1692 wrote to memory of 3192	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	88
PID 1692 wrote to memory of 3192	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	88
PID 1692 wrote to memory of 3192	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	88
PID 1692 wrote to memory of 2848	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	90
PID 1692 wrote to memory of 2848	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	90
PID 1692 wrote to memory of 2848	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	90
PID 1692 wrote to memory of 1148	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	93
PID 1692 wrote to memory of 1148	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	93
PID 1692 wrote to memory of 1148	1692	dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe	93
PID 2916 wrote to memory of 4104	2916	sqayyoxn.exe	98
PID 2916 wrote to memory of 4104	2916	sqayyoxn.exe	98
PID 2916 wrote to memory of 4104	2916	sqayyoxn.exe	98
PID 2916 wrote to memory of 4104	2916	sqayyoxn.exe	98
PID 2916 wrote to memory of 4104	2916	sqayyoxn.exe	98

C:\Users\Admin\AppData\Local\Temp\dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\olngsumm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4720
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqayyoxn.exe" C:\Windows\SysWOW64\olngsumm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3648
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create olngsumm binPath= "C:\Windows\SysWOW64\olngsumm\sqayyoxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3360
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description olngsumm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start olngsumm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2848
- 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:1148
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1692 -s 1168
  2⤵
  - Program crash
  PID:232

C:\Windows\SysWOW64\olngsumm\sqayyoxn.exe
C:\Windows\SysWOW64\olngsumm\sqayyoxn.exe /d"C:\Users\Admin\AppData\Local\Temp\dd2e9cb910a30a50be4635fa2620da3f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2916
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4104
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2916 -s 508
  2⤵
  - Program crash
  PID:3816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1692 -ip 1692
1⤵
PID:2028

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 2916 -ip 2916
1⤵
PID:5032

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\sqayyoxn.exe

Filesize
13.3MB

MD5
13f4fd7fb070e911eff60f33d3353339

SHA1
ddc6cb97bc608d30fb3d549c3e6bed47ab8596ad

SHA256
f7151d0eb99cbebc3f6f0ae79558d7a937bb7dd1dba72fe25ee2976eaa5d9999

SHA512
774f779c100cf1016d20ea7bb44c4dbca1748cd26f05f89124a3475558e56e5c9862ba0b8bbaa696be16f58241481d835c6fd6e30fdf553509002bac7dfcb550

Download Submit
memory/1692-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1692-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1692-1-0x00000000009F0000-0x0000000000AF0000-memory.dmp

Filesize
1024KB

Download
memory/1692-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1692-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1692-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2916-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2916-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2916-17-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4104-13-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/4104-15-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/4104-16-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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