tofsee | 12fc26099c9211e05e88cf5e206a4ec8aec7df1e1b027957f29e1b976ac9f8af

General

Target

JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe
Size

11.4MB
MD5

fce6bf12343434546ad2ffe1162c6b84
SHA1

7ee5965dfdcfbe6ef41b53b75ff43e922a188747
SHA256

12fc26099c9211e05e88cf5e206a4ec8aec7df1e1b027957f29e1b976ac9f8af
SHA512

1e5dc62e6005c6ccb11a54a1389cbecf9b0f65f6859c42e4a922a37898901a636f7a999a8e20278393d0201a0b157149432162f89be1ed37c89867c4a70723f2
SSDEEP

196608:SI+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++3:S

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
2908	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\xkdutzls\ImagePath = "C:\\Windows\\SysWOW64\\xkdutzls\\cojgnmma.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe

Deletes itself 1 IoCs

pid	Process
3676	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2516	cojgnmma.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2516 set thread context of 3676	2516	cojgnmma.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
1032	sc.exe
4312	sc.exe
1600	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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
4848	4992	WerFault.exe	82
3456	2516	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	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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.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	cojgnmma.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4992 wrote to memory of 5044	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	83
PID 4992 wrote to memory of 5044	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	83
PID 4992 wrote to memory of 5044	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	83
PID 4992 wrote to memory of 3708	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	85
PID 4992 wrote to memory of 3708	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	85
PID 4992 wrote to memory of 3708	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	85
PID 4992 wrote to memory of 1032	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	87
PID 4992 wrote to memory of 1032	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	87
PID 4992 wrote to memory of 1032	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	87
PID 4992 wrote to memory of 4312	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	90
PID 4992 wrote to memory of 4312	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	90
PID 4992 wrote to memory of 4312	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	90
PID 4992 wrote to memory of 1600	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	92
PID 4992 wrote to memory of 1600	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	92
PID 4992 wrote to memory of 1600	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	92
PID 4992 wrote to memory of 2908	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	95
PID 4992 wrote to memory of 2908	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	95
PID 4992 wrote to memory of 2908	4992	JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe	95
PID 2516 wrote to memory of 3676	2516	cojgnmma.exe	101
PID 2516 wrote to memory of 3676	2516	cojgnmma.exe	101
PID 2516 wrote to memory of 3676	2516	cojgnmma.exe	101
PID 2516 wrote to memory of 3676	2516	cojgnmma.exe	101
PID 2516 wrote to memory of 3676	2516	cojgnmma.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4992
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xkdutzls\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:5044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\cojgnmma.exe" C:\Windows\SysWOW64\xkdutzls\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xkdutzls binPath= "C:\Windows\SysWOW64\xkdutzls\cojgnmma.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1032
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xkdutzls "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4312
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xkdutzls
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1600
- 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:2908
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4992 -s 572
  2⤵
  - Program crash
  PID:4848

C:\Windows\SysWOW64\xkdutzls\cojgnmma.exe
C:\Windows\SysWOW64\xkdutzls\cojgnmma.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fce6bf12343434546ad2ffe1162c6b84.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2516
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3676
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2516 -s 508
  2⤵
  - Program crash
  PID:3456

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 412 -p 4992 -ip 4992
1⤵
PID:3068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 2516 -ip 2516
1⤵
PID:3672

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\cojgnmma.exe

Filesize
10.7MB

MD5
b8278ba3ce81ab8717d07e8bf8133260

SHA1
f77a8a5a386f5c07563272566dadf3a13f2369b8

SHA256
9c996b0eece18501f4640877cde6a76dbf631c394d0d9f9ba6db5e8ef8d019be

SHA512
21addc3f9cdf6cc500ee41bc3fe40dbae1c8fe44562a0406f8cc2f4946879c9da34e744ddddfc24e34c0a404e4eae09619b07b8e8a369b2bfef88fa035379557

Download Submit
memory/2516-11-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2516-18-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/2516-12-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3676-13-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/3676-15-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/3676-16-0x0000000000950000-0x0000000000965000-memory.dmp

Filesize
84KB

Download
memory/4992-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4992-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4992-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4992-1-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/4992-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4992-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads