tofsee | 2e610cc893504d514ff0774c3fd07ded631064d7947546759c1721a37abc1db3

General

Target

JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe
Size

14.7MB
MD5

b86baa8e1503d0189cf137460f155183
SHA1

392b81e0cf10a0c4d0dc66861ecad3ec53014ca0
SHA256

2e610cc893504d514ff0774c3fd07ded631064d7947546759c1721a37abc1db3
SHA512

ee18e49055879b6554e7e3fbc680edc9a6808c415e2a9120f46a6f5eacb73ec17ba9010c49a7c91160bdc8135e48f013e210ae99b451d882bc6eae4f6978a0fc
SSDEEP

12288:qdbYJ+lQMgLtAgtiMxyJFJNN0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaK:2vQMwRtiMO

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

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
1092	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\stxizxd\ImagePath = "C:\\Windows\\SysWOW64\\stxizxd\\ukfrlxbt.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_b86baa8e1503d0189cf137460f155183.exe

Deletes itself 1 IoCs

pid	Process
4660	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1372	ukfrlxbt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1372 set thread context of 4660	1372	ukfrlxbt.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
4800	sc.exe
3932	sc.exe
1416	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 4 IoCs

pid	pid_target	Process	procid_target
1420	1488	WerFault.exe	82
4504	1488	WerFault.exe	82
972	1372	WerFault.exe	95
1444	1372	WerFault.exe	95

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_b86baa8e1503d0189cf137460f155183.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	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ukfrlxbt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 3416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	83
PID 1488 wrote to memory of 3416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	83
PID 1488 wrote to memory of 3416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	83
PID 1488 wrote to memory of 4292	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	85
PID 1488 wrote to memory of 4292	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	85
PID 1488 wrote to memory of 4292	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	85
PID 1488 wrote to memory of 4800	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	87
PID 1488 wrote to memory of 4800	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	87
PID 1488 wrote to memory of 4800	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	87
PID 1488 wrote to memory of 3932	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	89
PID 1488 wrote to memory of 3932	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	89
PID 1488 wrote to memory of 3932	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	89
PID 1488 wrote to memory of 1416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	93
PID 1488 wrote to memory of 1416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	93
PID 1488 wrote to memory of 1416	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	93
PID 1488 wrote to memory of 1092	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	96
PID 1488 wrote to memory of 1092	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	96
PID 1488 wrote to memory of 1092	1488	JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe	96
PID 1372 wrote to memory of 4660	1372	ukfrlxbt.exe	105
PID 1372 wrote to memory of 4660	1372	ukfrlxbt.exe	105
PID 1372 wrote to memory of 4660	1372	ukfrlxbt.exe	105
PID 1372 wrote to memory of 4660	1372	ukfrlxbt.exe	105
PID 1372 wrote to memory of 4660	1372	ukfrlxbt.exe	105

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\stxizxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3416
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ukfrlxbt.exe" C:\Windows\SysWOW64\stxizxd\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4292
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create stxizxd binPath= "C:\Windows\SysWOW64\stxizxd\ukfrlxbt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description stxizxd "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3932
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start stxizxd
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1416
- 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:1092
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 1240
  2⤵
  - Program crash
  PID:1420
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1488 -s 672
  2⤵
  - Program crash
  PID:4504

C:\Windows\SysWOW64\stxizxd\ukfrlxbt.exe
C:\Windows\SysWOW64\stxizxd\ukfrlxbt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b86baa8e1503d0189cf137460f155183.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1372
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4660
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1372 -s 516
  2⤵
  - Program crash
  PID:972
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1372 -s 536
  2⤵
  - Program crash
  PID:1444

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 1488 -ip 1488
1⤵
PID:1720

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1488 -ip 1488
1⤵
PID:908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 1372 -ip 1372
1⤵
PID:1796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 1372 -ip 1372
1⤵
PID:1268

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\ukfrlxbt.exe

Filesize
12.8MB

MD5
145ff9213b4373464ebdaf9cc92fbfbb

SHA1
912dad6f49ccc7d004ca4fb141085790e4a747df

SHA256
8d80a23fc35b556941d2003c31b7734df583f64a98bdbbb62fa43e10a15cda0d

SHA512
16b80673205f953f21b1fad95934a003266adc2944131da5771dc952eb1ed9ed8bc9fac6d83a6a55b6ea918834bb34da7937bf6b95dd9aff139729e381d8e10e

Download Submit
memory/1372-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1372-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1372-12-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/1488-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-2-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/1488-1-0x00000000009D0000-0x0000000000AD0000-memory.dmp

Filesize
1024KB

Download
memory/1488-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-14-0x0000000000CD0000-0x0000000000CE3000-memory.dmp

Filesize
76KB

Download
memory/1488-13-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/4660-9-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/4660-17-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download
memory/4660-18-0x0000000000500000-0x0000000000515000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads