tofsee | 015f6f0f6fdf5021bea0fff32edb4a157a6fdbc247defea1014db3dba9ac1803

General

Target

JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe
Size

10.1MB
MD5

eb8a26f7dd1a2aa9cd9d0936ea552c1d
SHA1

919ab5a6753f6ef5610cb84d4aa123874183b0d0
SHA256

015f6f0f6fdf5021bea0fff32edb4a157a6fdbc247defea1014db3dba9ac1803
SHA512

8d3279ee482928a1db7da17f0dbdbbc10c8b9677ae217eff4ca8f9f51bdd21e7749e95c51ac96c8d777f78757987a9fd75f1a5d3f51dbf11248ecbb91adf0340
SSDEEP

49152:pkHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH:

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
2360	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\nkepmhsf\ImagePath = "C:\\Windows\\SysWOW64\\nkepmhsf\\efdnqjoz.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-1-5-21-3350944739-639801879-157714471-1000\Control Panel\International\Geo\Nation	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe

Deletes itself 1 IoCs

pid	Process
3744	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1568	efdnqjoz.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1568 set thread context of 3744	1568	efdnqjoz.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4704	sc.exe
4708	sc.exe
4796	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
1884	4876	WerFault.exe	82
1328	1568	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	efdnqjoz.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.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	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4876 wrote to memory of 924	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	83
PID 4876 wrote to memory of 924	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	83
PID 4876 wrote to memory of 924	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	83
PID 4876 wrote to memory of 4188	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	85
PID 4876 wrote to memory of 4188	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	85
PID 4876 wrote to memory of 4188	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	85
PID 4876 wrote to memory of 4708	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	87
PID 4876 wrote to memory of 4708	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	87
PID 4876 wrote to memory of 4708	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	87
PID 4876 wrote to memory of 4796	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	89
PID 4876 wrote to memory of 4796	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	89
PID 4876 wrote to memory of 4796	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	89
PID 4876 wrote to memory of 4704	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	91
PID 4876 wrote to memory of 4704	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	91
PID 4876 wrote to memory of 4704	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	91
PID 4876 wrote to memory of 2360	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	94
PID 4876 wrote to memory of 2360	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	94
PID 4876 wrote to memory of 2360	4876	JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe	94
PID 1568 wrote to memory of 3744	1568	efdnqjoz.exe	100
PID 1568 wrote to memory of 3744	1568	efdnqjoz.exe	100
PID 1568 wrote to memory of 3744	1568	efdnqjoz.exe	100
PID 1568 wrote to memory of 3744	1568	efdnqjoz.exe	100
PID 1568 wrote to memory of 3744	1568	efdnqjoz.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4876
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nkepmhsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:924
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\efdnqjoz.exe" C:\Windows\SysWOW64\nkepmhsf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nkepmhsf binPath= "C:\Windows\SysWOW64\nkepmhsf\efdnqjoz.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nkepmhsf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4796
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nkepmhsf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4704
- 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:2360
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4876 -s 1236
  2⤵
  - Program crash
  PID:1884

C:\Windows\SysWOW64\nkepmhsf\efdnqjoz.exe
C:\Windows\SysWOW64\nkepmhsf\efdnqjoz.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_eb8a26f7dd1a2aa9cd9d0936ea552c1d.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1568
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3744
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1568 -s 564
  2⤵
  - Program crash
  PID:1328

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4876 -ip 4876
1⤵
PID:116

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 508 -p 1568 -ip 1568
1⤵
PID:3276

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

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Downloads

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

Filesize
11.7MB

MD5
0f5be2deff2ed808c4a502d854430a50

SHA1
ea7e4c2313b1fbfc518f839e086b7f795df5d365

SHA256
c399d476a3a50e83b2825eb7d6ba20420f9701c65c39c828992ee61c00e49e73

SHA512
a61ac3fca782c8c18eb3221314bedc783dbebdd632577708bdd239dc6183664aeeaa4ef6592dd42097aee836cc3eb465c5647dfa2d8d2666e9cf55234de7eed9

Download Submit
memory/1568-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/1568-17-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3744-12-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/3744-14-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/3744-15-0x0000000000D20000-0x0000000000D35000-memory.dmp

Filesize
84KB

Download
memory/4876-1-0x0000000000830000-0x0000000000930000-memory.dmp

Filesize
1024KB

Download
memory/4876-2-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download
memory/4876-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4876-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/4876-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4876-9-0x0000000002500000-0x0000000002513000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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