tofsee | dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925

General

Target

JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe
Size

159KB
MD5

7660635a50899e71c211b7d323c221ea
SHA1

b4421fb519fadefa1a2ee4924b55bdce80c027a8
SHA256

dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925
SHA512

8065a7d7a36c63ccd4f3b70c49cc2c651425d061e541c88e2b8576c5dadca3b94fdaa025abc960b1021aa3d08da0bbcf2ef6599225cd60b5507cad236b151159
SSDEEP

3072:/76t3I5NU6gM6ueKflIMykzYWzJn3iIsNb:OI5NUVdsfjRYuJ1s

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
3588	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\eztbgflx\ImagePath = "C:\\Windows\\SysWOW64\\eztbgflx\\peflyjdc.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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe

Deletes itself 1 IoCs

pid	Process
4400	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2792	peflyjdc.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2792 set thread context of 4400	2792	peflyjdc.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4572	sc.exe
864	sc.exe
4908	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
3596	1392	WerFault.exe	82
4800	2792	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	peflyjdc.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.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 1392 wrote to memory of 2244	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	83
PID 1392 wrote to memory of 2244	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	83
PID 1392 wrote to memory of 2244	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	83
PID 1392 wrote to memory of 3624	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	85
PID 1392 wrote to memory of 3624	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	85
PID 1392 wrote to memory of 3624	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	85
PID 1392 wrote to memory of 864	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	87
PID 1392 wrote to memory of 864	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	87
PID 1392 wrote to memory of 864	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	87
PID 1392 wrote to memory of 4908	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	89
PID 1392 wrote to memory of 4908	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	89
PID 1392 wrote to memory of 4908	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	89
PID 1392 wrote to memory of 4572	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	92
PID 1392 wrote to memory of 4572	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	92
PID 1392 wrote to memory of 4572	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	92
PID 1392 wrote to memory of 3588	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	95
PID 1392 wrote to memory of 3588	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	95
PID 1392 wrote to memory of 3588	1392	JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe	95
PID 2792 wrote to memory of 4400	2792	peflyjdc.exe	101
PID 2792 wrote to memory of 4400	2792	peflyjdc.exe	101
PID 2792 wrote to memory of 4400	2792	peflyjdc.exe	101
PID 2792 wrote to memory of 4400	2792	peflyjdc.exe	101
PID 2792 wrote to memory of 4400	2792	peflyjdc.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eztbgflx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2244
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\peflyjdc.exe" C:\Windows\SysWOW64\eztbgflx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3624
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eztbgflx binPath= "C:\Windows\SysWOW64\eztbgflx\peflyjdc.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eztbgflx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4908
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eztbgflx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4572
- 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:3588
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1392 -s 596
  2⤵
  - Program crash
  PID:3596

C:\Windows\SysWOW64\eztbgflx\peflyjdc.exe
C:\Windows\SysWOW64\eztbgflx\peflyjdc.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_dc177df1ffea1b1ae45b27e51a3ac3ff6218c1b6590ad316b5703196c2969925.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2792
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4400
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2792 -s 512
  2⤵
  - Program crash
  PID:4800

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 1392 -ip 1392
1⤵
PID:3788

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2792 -ip 2792
1⤵
PID:4976

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\peflyjdc.exe

Filesize
13.8MB

MD5
eae5b7f82446ea213254d68d6810a56e

SHA1
7ff6dc7d40f4785983808f3e1ac819e40a8ddfb0

SHA256
fc9de79fb3993a67d5704986e3da82da897eb4f82f2041e0991ff3380f791692

SHA512
86a0b5ce8d7440686e6116cca83d941e2ce7f9183620d6f7f40db1740e7eee20476be74c6947bdd015e6514528578b2ad738848123fe93b2238949ca867a7292

Download Submit
memory/1392-13-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-1-0x0000000002060000-0x0000000002073000-memory.dmp

Filesize
76KB

Download
memory/1392-10-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1392-12-0x0000000002060000-0x0000000002073000-memory.dmp

Filesize
76KB

Download
memory/1392-0-0x0000000002030000-0x000000000203D000-memory.dmp

Filesize
52KB

Download
memory/1392-11-0x0000000002030000-0x000000000203D000-memory.dmp

Filesize
52KB

Download
memory/2792-6-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2792-7-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2792-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4400-8-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/4400-16-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download
memory/4400-17-0x00000000008B0000-0x00000000008C5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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