tofsee | b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e

General

Target

JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe
Size

246KB
MD5

3ad9b12cbfa962da1d348b26cedb62be
SHA1

3d0044c9f144ce76e2301c0c3a6ae2bd391de740
SHA256

b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e
SHA512

1cd52b441343c71f6638dcacd2731ed415b53a271b2c064e3ea769ebdee371f52793d35bf75a77e093107b48ed1d71c6570010f25f7d4cefc4d39ffdc3b11b71
SSDEEP

3072:g7Jxh2xryErd36x5I2b2VpN7O+NIjzit/WrxpzbgqruXhs7sxkgaBChU/pZa9uDB:+2xmE56x5IXmiRuzbgwu6QigabwVf

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
2300	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\rvuvcycj\ImagePath = "C:\\Windows\\SysWOW64\\rvuvcycj\\gmhktccx.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe

Deletes itself 1 IoCs

pid	Process
4012	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3908	gmhktccx.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3908 set thread context of 4012	3908	gmhktccx.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
4984	sc.exe
1452	sc.exe
3508	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
624	3096	WerFault.exe	83
4204	3908	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gmhktccx.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.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	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 3096 wrote to memory of 1228	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	84
PID 3096 wrote to memory of 1228	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	84
PID 3096 wrote to memory of 1228	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	84
PID 3096 wrote to memory of 3188	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	86
PID 3096 wrote to memory of 3188	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	86
PID 3096 wrote to memory of 3188	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	86
PID 3096 wrote to memory of 4984	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	88
PID 3096 wrote to memory of 4984	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	88
PID 3096 wrote to memory of 4984	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	88
PID 3096 wrote to memory of 1452	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	90
PID 3096 wrote to memory of 1452	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	90
PID 3096 wrote to memory of 1452	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	90
PID 3096 wrote to memory of 3508	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	92
PID 3096 wrote to memory of 3508	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	92
PID 3096 wrote to memory of 3508	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	92
PID 3096 wrote to memory of 2300	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	95
PID 3096 wrote to memory of 2300	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	95
PID 3096 wrote to memory of 2300	3096	JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe	95
PID 3908 wrote to memory of 4012	3908	gmhktccx.exe	100
PID 3908 wrote to memory of 4012	3908	gmhktccx.exe	100
PID 3908 wrote to memory of 4012	3908	gmhktccx.exe	100
PID 3908 wrote to memory of 4012	3908	gmhktccx.exe	100
PID 3908 wrote to memory of 4012	3908	gmhktccx.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3096
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rvuvcycj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gmhktccx.exe" C:\Windows\SysWOW64\rvuvcycj\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3188
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rvuvcycj binPath= "C:\Windows\SysWOW64\rvuvcycj\gmhktccx.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4984
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rvuvcycj "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rvuvcycj
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3508
- 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:2300
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3096 -s 1040
  2⤵
  - Program crash
  PID:624

C:\Windows\SysWOW64\rvuvcycj\gmhktccx.exe
C:\Windows\SysWOW64\rvuvcycj\gmhktccx.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b6ae7251deb7aa169a16112515e94ac61942559ceeb2451c7c9c743214fef37e.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3908
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3908 -s 512
  2⤵
  - Program crash
  PID:4204

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3096 -ip 3096
1⤵
PID:3480

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 540 -p 3908 -ip 3908
1⤵
PID:1668

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

Loading Replay Monitor...

Downloads

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

Filesize
14.8MB

MD5
b9b47bd4b8275023cb5ac18690ffedce

SHA1
f783be7302b8f3733807395c6b85ea2dd6aaa65b

SHA256
f219c9208a6f1e685308f2e58b50761a3936d8538e2172598f4119b0e0bde2b3

SHA512
53755f6d6041ed84a3238888a29fd50146a0d1e77995280d1225adb23549a612b1a901aafed38df6aa4a834fa57196b96ea24d0997a9a1117e5bfdd60bba4058

Download Submit
memory/3096-9-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3096-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3096-1-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/3096-0-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/3096-12-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3096-11-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/3096-10-0x00000000005E0000-0x00000000005ED000-memory.dmp

Filesize
52KB

Download
memory/3908-6-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/3908-14-0x0000000000400000-0x0000000000447000-memory.dmp

Filesize
284KB

Download
memory/4012-7-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/4012-15-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download
memory/4012-16-0x0000000000420000-0x0000000000435000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads