tofsee | 4a4cc69289edd4c28d77ddea461966cd8f52453c5b3f4a568a7b97791020d7a9

General

Target

JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe
Size

237KB
MD5

26ce3fd3ed7ba17781ecac3dd4222617
SHA1

2a0ebd247fb6e3be27a1757c9bdee3148c94e55e
SHA256

4a4cc69289edd4c28d77ddea461966cd8f52453c5b3f4a568a7b97791020d7a9
SHA512

1f23f5aafb35dcac59504f823cdbbc6a67ee8830d95e8f6c2aad4bc2f4fafc66cea41b81f836e00e345ffb84f1828ab5aaa394b74e5fecf1f443ffb692b91ab2
SSDEEP

6144:C4IcgPQpVgd0OmeDnkEi7BKzzRC+TueOHW0:CBXAVgd0OmAkEieFChR

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
2448	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\ybggaqkp\ImagePath = "C:\\Windows\\SysWOW64\\ybggaqkp\\cfygegoy.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe

Deletes itself 1 IoCs

pid	Process
1624	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3204	cfygegoy.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3204 set thread context of 1624	3204	cfygegoy.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
3280	sc.exe
1224	sc.exe
1008	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 6 IoCs

pid	pid_target	Process	procid_target
4716	2672	WerFault.exe	82
4536	2672	WerFault.exe	82
808	2672	WerFault.exe	82
3768	3204	WerFault.exe	94
2404	3204	WerFault.exe	94
4248	3204	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cfygegoy.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2672 wrote to memory of 2788	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	83
PID 2672 wrote to memory of 2788	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	83
PID 2672 wrote to memory of 2788	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	83
PID 2672 wrote to memory of 3676	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	85
PID 2672 wrote to memory of 3676	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	85
PID 2672 wrote to memory of 3676	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	85
PID 2672 wrote to memory of 3280	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	87
PID 2672 wrote to memory of 3280	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	87
PID 2672 wrote to memory of 3280	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	87
PID 2672 wrote to memory of 1224	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	90
PID 2672 wrote to memory of 1224	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	90
PID 2672 wrote to memory of 1224	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	90
PID 2672 wrote to memory of 1008	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	92
PID 2672 wrote to memory of 1008	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	92
PID 2672 wrote to memory of 1008	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	92
PID 2672 wrote to memory of 2448	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	95
PID 2672 wrote to memory of 2448	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	95
PID 2672 wrote to memory of 2448	2672	JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe	95
PID 3204 wrote to memory of 1624	3204	cfygegoy.exe	105
PID 3204 wrote to memory of 1624	3204	cfygegoy.exe	105
PID 3204 wrote to memory of 1624	3204	cfygegoy.exe	105
PID 3204 wrote to memory of 1624	3204	cfygegoy.exe	105
PID 3204 wrote to memory of 1624	3204	cfygegoy.exe	105

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ybggaqkp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cfygegoy.exe" C:\Windows\SysWOW64\ybggaqkp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ybggaqkp binPath= "C:\Windows\SysWOW64\ybggaqkp\cfygegoy.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ybggaqkp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1224
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ybggaqkp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1008
- 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:2448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 1208
  2⤵
  - Program crash
  PID:4716
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 1216
  2⤵
  - Program crash
  PID:4536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2672 -s 1196
  2⤵
  - Program crash
  PID:808

C:\Windows\SysWOW64\ybggaqkp\cfygegoy.exe
C:\Windows\SysWOW64\ybggaqkp\cfygegoy.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_26ce3fd3ed7ba17781ecac3dd4222617.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3204
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 536
  2⤵
  - Program crash
  PID:3768
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 552
  2⤵
  - Program crash
  PID:2404
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3204 -s 520
  2⤵
  - Program crash
  PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2672 -ip 2672
1⤵
PID:1480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 2672 -ip 2672
1⤵
PID:2188

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 544 -p 2672 -ip 2672
1⤵
PID:2668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 3204 -ip 3204
1⤵
PID:220

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 568 -p 3204 -ip 3204
1⤵
PID:1628

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 512 -p 3204 -ip 3204
1⤵
PID:1508

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\cfygegoy.exe

Filesize
11.1MB

MD5
c54afc0f29b634dec2f64ba665698fa3

SHA1
67b692223677b2082a1d9a87dab23fe775fcdc71

SHA256
6666d851c5cd04005add798b5844cf653b223610be1d4bd48379da76c15a9af0

SHA512
1f047c82249dd7397a2907160d44fbfca2e53f5cddcb22f98a26c09c63b88282aeb9ea2e2bba8c9a131dfdfc723ec8c94a286eed4a8c98aacc6f1e4ac639ff82

Download Submit
memory/1624-15-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/1624-13-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/1624-17-0x0000000000DA0000-0x0000000000DB5000-memory.dmp

Filesize
84KB

Download
memory/2672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-2-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/2672-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/2672-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2672-9-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/2672-1-0x0000000000A90000-0x0000000000B90000-memory.dmp

Filesize
1024KB

Download
memory/3204-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3204-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3204-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3204-18-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads