tofsee | e22cebdc511361af6279b3d257d5ca3c69fdd3b799f193fe3fdd8f9eeb303573

General

Target

JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe
Size

12.1MB
MD5

57093deb4af9d588900f67fc2e2d677e
SHA1

a83d4ced5a0d5fa7e4f1748bd1f8a9c9105bcdac
SHA256

e22cebdc511361af6279b3d257d5ca3c69fdd3b799f193fe3fdd8f9eeb303573
SHA512

da85cff41991841286401dcac9341db0740304c6d4421b5246160a1075b084c305f0069b05fd5e2dd85952de0382118857bad2fe473c95c4553761f7c504756d
SSDEEP

6144:/uumRZNKfLWUAUx6z6z1PiK/GasVhMz/bY:GbUR6z6zHGasVhU

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
4444	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\asnpbuhq\ImagePath = "C:\\Windows\\SysWOW64\\asnpbuhq\\agbenwwr.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe

Deletes itself 1 IoCs

pid	Process
3464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3188	agbenwwr.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3188 set thread context of 3464	3188	agbenwwr.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4028	sc.exe
2200	sc.exe
2108	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
5108	4764	WerFault.exe	82
3136	3188	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.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	agbenwwr.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 4764 wrote to memory of 4808	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	83
PID 4764 wrote to memory of 4808	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	83
PID 4764 wrote to memory of 4808	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	83
PID 4764 wrote to memory of 936	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	85
PID 4764 wrote to memory of 936	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	85
PID 4764 wrote to memory of 936	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	85
PID 4764 wrote to memory of 4028	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	88
PID 4764 wrote to memory of 4028	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	88
PID 4764 wrote to memory of 4028	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	88
PID 4764 wrote to memory of 2200	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	90
PID 4764 wrote to memory of 2200	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	90
PID 4764 wrote to memory of 2200	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	90
PID 4764 wrote to memory of 2108	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	92
PID 4764 wrote to memory of 2108	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	92
PID 4764 wrote to memory of 2108	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	92
PID 4764 wrote to memory of 4444	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	95
PID 4764 wrote to memory of 4444	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	95
PID 4764 wrote to memory of 4444	4764	JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe	95
PID 3188 wrote to memory of 3464	3188	agbenwwr.exe	101
PID 3188 wrote to memory of 3464	3188	agbenwwr.exe	101
PID 3188 wrote to memory of 3464	3188	agbenwwr.exe	101
PID 3188 wrote to memory of 3464	3188	agbenwwr.exe	101
PID 3188 wrote to memory of 3464	3188	agbenwwr.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\asnpbuhq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4808
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\agbenwwr.exe" C:\Windows\SysWOW64\asnpbuhq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:936
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create asnpbuhq binPath= "C:\Windows\SysWOW64\asnpbuhq\agbenwwr.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description asnpbuhq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2200
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start asnpbuhq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2108
- 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:4444
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 1040
  2⤵
  - Program crash
  PID:5108

C:\Windows\SysWOW64\asnpbuhq\agbenwwr.exe
C:\Windows\SysWOW64\asnpbuhq\agbenwwr.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_57093deb4af9d588900f67fc2e2d677e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3188 -s 512
  2⤵
  - Program crash
  PID:3136

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 4764 -ip 4764
1⤵
PID:4684

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 372 -p 3188 -ip 3188
1⤵
PID:3196

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\agbenwwr.exe

Filesize
10.2MB

MD5
75e79eba334c945075baeaa797f4fce5

SHA1
b4656c928b8201b12e2befd47d4218af5924ddc7

SHA256
0e61a415f91062a007d61edf9daa1454fcd9d1d6b300beb5e991876da95c9a58

SHA512
910cd5697f4b92d87e7d0c1c1b277ab9ff5d3c49182552ef7b67b436cedba9bee64f855b9a480b2b2ee0e2c376bf85876130de292921b4e832c3008c14ee44fb

Download Submit
memory/3188-14-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/3188-17-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download
memory/3464-11-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/3464-13-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/3464-16-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/4764-1-0x00000000016C0000-0x00000000017C0000-memory.dmp

Filesize
1024KB

Download
memory/4764-2-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4764-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4764-9-0x0000000003400000-0x0000000003413000-memory.dmp

Filesize
76KB

Download
memory/4764-8-0x0000000000400000-0x00000000016BD000-memory.dmp

Filesize
18.7MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads