tofsee | 952e4b5bba456e1bb30334d28d421a937a18a5ae6926ee914172f89c65e24acb

General

Target

7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe
Size

10.9MB
MD5

7a024b0d37c1167f69a9c9766c9af3a9
SHA1

7ddcff26d726b0cf3151704cf0f9e51158b93279
SHA256

952e4b5bba456e1bb30334d28d421a937a18a5ae6926ee914172f89c65e24acb
SHA512

236063040255aa606c77ae22a5a8b1a75b0953a09ade29096c76bb77cbe5b4fbee36e39fdd7ee9fca9bc71d965bbc2f6bff705aa4e3879c24bf04f7df0b6bfc8
SSDEEP

98304:rYTPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPv:r

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

lazystax.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
5056	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\xevyxhiu\ImagePath = "C:\\Windows\\SysWOW64\\xevyxhiu\\phvjxwmg.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	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4496	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
64	phvjxwmg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 64 set thread context of 4496	64	phvjxwmg.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4688	sc.exe
2192	sc.exe
4712	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

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	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.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	netsh.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	phvjxwmg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4952 wrote to memory of 2316	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	90
PID 4952 wrote to memory of 2316	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	90
PID 4952 wrote to memory of 2316	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	90
PID 4952 wrote to memory of 3560	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	93
PID 4952 wrote to memory of 3560	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	93
PID 4952 wrote to memory of 3560	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	93
PID 4952 wrote to memory of 2192	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	96
PID 4952 wrote to memory of 2192	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	96
PID 4952 wrote to memory of 2192	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	96
PID 4952 wrote to memory of 4712	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	98
PID 4952 wrote to memory of 4712	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	98
PID 4952 wrote to memory of 4712	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	98
PID 4952 wrote to memory of 4688	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	100
PID 4952 wrote to memory of 4688	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	100
PID 4952 wrote to memory of 4688	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	100
PID 4952 wrote to memory of 5056	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	103
PID 4952 wrote to memory of 5056	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	103
PID 4952 wrote to memory of 5056	4952	7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe	103
PID 64 wrote to memory of 4496	64	phvjxwmg.exe	107
PID 64 wrote to memory of 4496	64	phvjxwmg.exe	107
PID 64 wrote to memory of 4496	64	phvjxwmg.exe	107
PID 64 wrote to memory of 4496	64	phvjxwmg.exe	107
PID 64 wrote to memory of 4496	64	phvjxwmg.exe	107

C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4952
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xevyxhiu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\phvjxwmg.exe" C:\Windows\SysWOW64\xevyxhiu\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3560
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xevyxhiu binPath= "C:\Windows\SysWOW64\xevyxhiu\phvjxwmg.exe /d\"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xevyxhiu "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4712
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xevyxhiu
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4688
- 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:5056

C:\Windows\SysWOW64\xevyxhiu\phvjxwmg.exe
C:\Windows\SysWOW64\xevyxhiu\phvjxwmg.exe /d"C:\Users\Admin\AppData\Local\Temp\7a024b0d37c1167f69a9c9766c9af3a9_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:64
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4496

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\phvjxwmg.exe

Filesize
13.8MB

MD5
b75f05b1563a137b265f45dc1e7f44fc

SHA1
3eb11e7825c2e2aabe815e8f37d383478c79a003

SHA256
52e7c82951f8f57485e094312e25958e517ecd62ad51e0c12bab95a5e1f48e0e

SHA512
d26c231bc93b1367e76b0584bb37e58ac6fa9a237d38fb39dd0d878b13cf1938d54f9f2b68e2eae4af410f1c78d10f131b820b01c012ee0f47f493b2a4714388

Download Submit
memory/64-12-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download
memory/4496-11-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/4496-14-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/4496-15-0x00000000012A0000-0x00000000012B5000-memory.dmp

Filesize
84KB

Download
memory/4952-2-0x0000000002830000-0x0000000002843000-memory.dmp

Filesize
76KB

Download
memory/4952-1-0x0000000000F90000-0x0000000001090000-memory.dmp

Filesize
1024KB

Download
memory/4952-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4952-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4952-8-0x0000000002830000-0x0000000002843000-memory.dmp

Filesize
76KB

Download
memory/4952-7-0x0000000000400000-0x0000000000C17000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads