tofsee | a5c7112ff3e20b3f66cad4ceaa8c395dc157a94fad24d5aed5202d53c6714306

General

Target

JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe
Size

10.2MB
MD5

a841a4cf146be49d8368cb6b92aea1be
SHA1

482a1fbe8a24b61c095db3c32a8ee22534ed7af9
SHA256

a5c7112ff3e20b3f66cad4ceaa8c395dc157a94fad24d5aed5202d53c6714306
SHA512

d7122080cbb2fa84183030afb917e8407617c62291adde3048342fc9b38ec0b72d0ba38f224d81a1b18609ece5b63c3f3207ceaf1028b6e21f7a6be1cd3b03eb
SSDEEP

24576:U/FfqVdOBr70Fm0999999999999999999999999999999999999999999999999V:sFU

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
4612	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\gsroqxge\ImagePath = "C:\\Windows\\SysWOW64\\gsroqxge\\sxhxlq.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_a841a4cf146be49d8368cb6b92aea1be.exe

Deletes itself 1 IoCs

pid	Process
3168	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3400	sxhxlq.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3400 set thread context of 3168	3400	sxhxlq.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4332	sc.exe
4864	sc.exe
1284	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3984	3772	WerFault.exe	82
2844	3400	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	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sxhxlq.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3772 wrote to memory of 3932	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	83
PID 3772 wrote to memory of 3932	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	83
PID 3772 wrote to memory of 3932	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	83
PID 3772 wrote to memory of 5052	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	85
PID 3772 wrote to memory of 5052	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	85
PID 3772 wrote to memory of 5052	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	85
PID 3772 wrote to memory of 4864	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	87
PID 3772 wrote to memory of 4864	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	87
PID 3772 wrote to memory of 4864	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	87
PID 3772 wrote to memory of 1284	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	90
PID 3772 wrote to memory of 1284	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	90
PID 3772 wrote to memory of 1284	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	90
PID 3772 wrote to memory of 4332	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	92
PID 3772 wrote to memory of 4332	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	92
PID 3772 wrote to memory of 4332	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	92
PID 3772 wrote to memory of 4612	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	95
PID 3772 wrote to memory of 4612	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	95
PID 3772 wrote to memory of 4612	3772	JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe	95
PID 3400 wrote to memory of 3168	3400	sxhxlq.exe	101
PID 3400 wrote to memory of 3168	3400	sxhxlq.exe	101
PID 3400 wrote to memory of 3168	3400	sxhxlq.exe	101
PID 3400 wrote to memory of 3168	3400	sxhxlq.exe	101
PID 3400 wrote to memory of 3168	3400	sxhxlq.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3772
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\gsroqxge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3932
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sxhxlq.exe" C:\Windows\SysWOW64\gsroqxge\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5052
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create gsroqxge binPath= "C:\Windows\SysWOW64\gsroqxge\sxhxlq.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4864
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description gsroqxge "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1284
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start gsroqxge
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4332
- 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:4612
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3772 -s 1168
  2⤵
  - Program crash
  PID:3984

C:\Windows\SysWOW64\gsroqxge\sxhxlq.exe
C:\Windows\SysWOW64\gsroqxge\sxhxlq.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_a841a4cf146be49d8368cb6b92aea1be.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3400
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3168
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3400 -s 228
  2⤵
  - Program crash
  PID:2844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 3772 -ip 3772
1⤵
PID:3404

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 3400 -ip 3400
1⤵
PID:1020

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\sxhxlq.exe

Filesize
14.0MB

MD5
0b691fc999ae671c8e8f19de6d3c5ba9

SHA1
bf3430cac616435870f438b261a67dd2645a48d6

SHA256
fd41d56e82a5ed98d076cf6b4bc5aff2f87136f5bfbbbf3d4481c4be367d7e7c

SHA512
62bdfb39a52533cc5b56e3e7d321c4b615798f06f2f14591691f5d627074bbb9e2d88e87b6d9aec544095b00b966d2750af01c5b0c56cb0626aa582f34873de1

Download Submit
memory/3168-12-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/3168-14-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/3168-15-0x0000000000F10000-0x0000000000F25000-memory.dmp

Filesize
84KB

Download
memory/3400-11-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3400-16-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download
memory/3772-2-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/3772-1-0x00000000007E0000-0x00000000008E0000-memory.dmp

Filesize
1024KB

Download
memory/3772-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3772-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3772-9-0x00000000024D0000-0x00000000024E3000-memory.dmp

Filesize
76KB

Download
memory/3772-8-0x0000000000400000-0x0000000000785000-memory.dmp

Filesize
3.5MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads