tofsee | fccafebc3676168caba30cd188d3ebb00b4fffe26ef2754468d4883cad7de571

General

Target

JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe
Size

13.3MB
MD5

8fde8b0fd9fb569180caa7332394fec8
SHA1

0e0750c3ab52fc2b95727f92541848fe3e4e0e1a
SHA256

fccafebc3676168caba30cd188d3ebb00b4fffe26ef2754468d4883cad7de571
SHA512

ea91950a3af96c3bff8a26c724c7925b3f12ade6b69f931c80c589d4a522b7805fe95f5f47fb42272ff583ac0e0c666e0e469725e57b25a740644244cfb18df3
SSDEEP

98304:jRoooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooX:

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
4448	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\rjdzobrj\ImagePath = "C:\\Windows\\SysWOW64\\rjdzobrj\\egaplhdu.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_8fde8b0fd9fb569180caa7332394fec8.exe

Deletes itself 1 IoCs

pid	Process
5008	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1520	egaplhdu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1520 set thread context of 5008	1520	egaplhdu.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1824	sc.exe
3780	sc.exe
2864	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
3796	4436	WerFault.exe	82
3920	1520	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	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	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.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	egaplhdu.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4436 wrote to memory of 3380	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	83
PID 4436 wrote to memory of 3380	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	83
PID 4436 wrote to memory of 3380	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	83
PID 4436 wrote to memory of 1992	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	85
PID 4436 wrote to memory of 1992	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	85
PID 4436 wrote to memory of 1992	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	85
PID 4436 wrote to memory of 3780	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	88
PID 4436 wrote to memory of 3780	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	88
PID 4436 wrote to memory of 3780	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	88
PID 4436 wrote to memory of 2864	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	90
PID 4436 wrote to memory of 2864	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	90
PID 4436 wrote to memory of 2864	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	90
PID 4436 wrote to memory of 1824	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	92
PID 4436 wrote to memory of 1824	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	92
PID 4436 wrote to memory of 1824	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	92
PID 4436 wrote to memory of 4448	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	95
PID 4436 wrote to memory of 4448	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	95
PID 4436 wrote to memory of 4448	4436	JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe	95
PID 1520 wrote to memory of 5008	1520	egaplhdu.exe	101
PID 1520 wrote to memory of 5008	1520	egaplhdu.exe	101
PID 1520 wrote to memory of 5008	1520	egaplhdu.exe	101
PID 1520 wrote to memory of 5008	1520	egaplhdu.exe	101
PID 1520 wrote to memory of 5008	1520	egaplhdu.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4436
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rjdzobrj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\egaplhdu.exe" C:\Windows\SysWOW64\rjdzobrj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1992
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rjdzobrj binPath= "C:\Windows\SysWOW64\rjdzobrj\egaplhdu.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3780
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rjdzobrj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rjdzobrj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1824
- 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:4448
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4436 -s 572
  2⤵
  - Program crash
  PID:3796

C:\Windows\SysWOW64\rjdzobrj\egaplhdu.exe
C:\Windows\SysWOW64\rjdzobrj\egaplhdu.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_8fde8b0fd9fb569180caa7332394fec8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1520
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5008
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1520 -s 508
  2⤵
  - Program crash
  PID:3920

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 4436 -ip 4436
1⤵
PID:4668

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 1520 -ip 1520
1⤵
PID:4660

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\egaplhdu.exe

Filesize
11.1MB

MD5
0ec28d8974275f14fac9584a11682e28

SHA1
6e5cb1bc296c336d537fa21a05f29da5a567e781

SHA256
7976136d48451ca16e49ec252b69eb522b9d07128413bcb87bd487ececc686e8

SHA512
22d025a1be381baa2a3c6d067b15b68516c9fe7d410e7525399c311c825193324b4c358932f1cc5d8c369bb07f7d6a84f3c02a16669fbbaa69a2696c4c594774

Download Submit
memory/1520-13-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/1520-12-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/1520-11-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/1520-19-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/4436-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4436-2-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4436-8-0x0000000000400000-0x00000000004AC000-memory.dmp

Filesize
688KB

Download
memory/4436-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4436-9-0x00000000001E0000-0x00000000001F3000-memory.dmp

Filesize
76KB

Download
memory/4436-1-0x00000000007F0000-0x00000000008F0000-memory.dmp

Filesize
1024KB

Download
memory/5008-14-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/5008-16-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/5008-17-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads