tofsee | e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec

General

Target

JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe
Size

234KB
MD5

c0e15986413e5b830d1228f358247bb0
SHA1

9b4bbf48e3cb01e0e69a7f204580a3fa2a391115
SHA256

e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec
SHA512

175aeee3d81d94c2c23f56cf13870090e540038d29aa47b99c0f54e876d9d62bbfd37119ed1deb3776402ed9d24268816013e90d93b52790108f2a4d84014751
SSDEEP

6144:Po+nN6bo6whkr0QGZPGe/O7oli8bbR/HmB:P1nN6bo6wi0QGZj/O1yJs

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
1096	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\ulbprugk\ImagePath = "C:\\Windows\\SysWOW64\\ulbprugk\\wlyugfyk.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe

Deletes itself 1 IoCs

pid	Process
2796	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1148	wlyugfyk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1148 set thread context of 2796	1148	wlyugfyk.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2800	sc.exe
4136	sc.exe
2932	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
3004	2784	WerFault.exe	81
3484	1148	WerFault.exe	92

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	wlyugfyk.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.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	cmd.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 2784 wrote to memory of 5064	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	82
PID 2784 wrote to memory of 5064	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	82
PID 2784 wrote to memory of 5064	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	82
PID 2784 wrote to memory of 3060	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	84
PID 2784 wrote to memory of 3060	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	84
PID 2784 wrote to memory of 3060	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	84
PID 2784 wrote to memory of 2800	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	86
PID 2784 wrote to memory of 2800	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	86
PID 2784 wrote to memory of 2800	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	86
PID 2784 wrote to memory of 4136	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	88
PID 2784 wrote to memory of 4136	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	88
PID 2784 wrote to memory of 4136	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	88
PID 2784 wrote to memory of 2932	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	90
PID 2784 wrote to memory of 2932	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	90
PID 2784 wrote to memory of 2932	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	90
PID 2784 wrote to memory of 1096	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	93
PID 2784 wrote to memory of 1096	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	93
PID 2784 wrote to memory of 1096	2784	JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe	93
PID 1148 wrote to memory of 2796	1148	wlyugfyk.exe	98
PID 1148 wrote to memory of 2796	1148	wlyugfyk.exe	98
PID 1148 wrote to memory of 2796	1148	wlyugfyk.exe	98
PID 1148 wrote to memory of 2796	1148	wlyugfyk.exe	98
PID 1148 wrote to memory of 2796	1148	wlyugfyk.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2784
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\ulbprugk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5064
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wlyugfyk.exe" C:\Windows\SysWOW64\ulbprugk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3060
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create ulbprugk binPath= "C:\Windows\SysWOW64\ulbprugk\wlyugfyk.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2800
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description ulbprugk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start ulbprugk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2932
- 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:1096
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2784 -s 776
  2⤵
  - Program crash
  PID:3004

C:\Windows\SysWOW64\ulbprugk\wlyugfyk.exe
C:\Windows\SysWOW64\ulbprugk\wlyugfyk.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_e6e047c6487cc3f00d59084d38f831ea6ced3be17ec8a7b1932bbda6d07c09ec.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1148
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2796
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1148 -s 524
  2⤵
  - Program crash
  PID:3484

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2784 -ip 2784
1⤵
PID:232

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 496 -p 1148 -ip 1148
1⤵
PID:4128

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\wlyugfyk.exe

Filesize
12.8MB

MD5
b8d021bb4b905f9b3c1c8e3bca518351

SHA1
616b868cb66c26f38988fd3e7221438c21cd57f9

SHA256
a4275b38f78d40d4ba83524c0d520833574b32e492efad1218ab586e137b6357

SHA512
78c3bea867507eb6bca25f5214f7b2ff1a347c9516ff7a2703605a48e8ce7db9fb0b4a28021da3ebd95a351423611961b088c0a82e9e59797ef1da555be898f4

Download Submit
memory/1148-11-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1148-15-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/1148-16-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2784-8-0x0000000000400000-0x000000000086A000-memory.dmp

Filesize
4.4MB

Download
memory/2784-9-0x00000000008D0000-0x00000000008E3000-memory.dmp

Filesize
76KB

Download
memory/2784-1-0x0000000000960000-0x0000000000A60000-memory.dmp

Filesize
1024KB

Download
memory/2784-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2784-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2784-2-0x00000000008D0000-0x00000000008E3000-memory.dmp

Filesize
76KB

Download
memory/2796-12-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/2796-14-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download
memory/2796-17-0x0000000000D00000-0x0000000000D15000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads