tofsee | b7ab78d52ddd0a763ab3b080ab5abbe49cc0f3118e1f846b4011714544caa9b1

General

Target

1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe
Size

10.1MB
MD5

1ed018195c5f31b6af29f1501af2990e
SHA1

3f1038c1b184b3235d01ad5a240789636afa2e52
SHA256

b7ab78d52ddd0a763ab3b080ab5abbe49cc0f3118e1f846b4011714544caa9b1
SHA512

0344baf16101c4fa0e833503f087a33d47209bbadfbafeab4152926cb7a8294656d7679d0f6f1170e5f0381bce66829da5b2ff69a0b5c47d8788ea57d9c2e3cd
SSDEEP

24576:nlO9VKnpR6/dblLPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPP/:nVpRm

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\jefldqob = "0"	svchost.exe

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

Processes:

netsh.exe

pid process

2908 netsh.exe

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

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\jefldqob\ImagePath = "C:\\Windows\\SysWOW64\\jefldqob\\jvuitdlf.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2956 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

jvuitdlf.exe

pid process

2756 jvuitdlf.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

jvuitdlf.exe

description pid process target process

PID 2756 set thread context of 2956 2756 jvuitdlf.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2484 sc.exe
2752 sc.exe
2832 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2956	svchost.exe

pid	process
2756	jvuitdlf.exe

description	pid	process	target process
PID 2756 set thread context of 2956	2756	jvuitdlf.exe	svchost.exe

pid	process
2484	sc.exe
2752	sc.exe
2832	sc.exe

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

Processes:

netsh.exe

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

Processes:

cmd.exesc.exejvuitdlf.exenetsh.exe1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.execmd.exesc.exesc.exesvchost.exe

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	jvuitdlf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.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 30 IoCs

Processes:

1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exejvuitdlf.exe

description	pid	process	target process
PID 2352 wrote to memory of 1600	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 1600	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 1600	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 1600	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 2556	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 2556	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 2556	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 2556	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	cmd.exe
PID 2352 wrote to memory of 2484	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2484	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2484	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2484	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2752	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2752	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2752	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2752	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2832	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2832	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2832	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2352 wrote to memory of 2832	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	sc.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2756 wrote to memory of 2956	2756	jvuitdlf.exe	svchost.exe
PID 2352 wrote to memory of 2908	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	netsh.exe
PID 2352 wrote to memory of 2908	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	netsh.exe
PID 2352 wrote to memory of 2908	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	netsh.exe
PID 2352 wrote to memory of 2908	2352	1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2352

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jefldqob\
2⤵
- System Location Discovery: System Language Discovery
PID:1600

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\jvuitdlf.exe" C:\Windows\SysWOW64\jefldqob\
2⤵
- System Location Discovery: System Language Discovery
PID:2556

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create jefldqob binPath= "C:\Windows\SysWOW64\jefldqob\jvuitdlf.exe /d\"C:\Users\Admin\AppData\Local\Temp\1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2484

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description jefldqob "wifi internet conection"
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2752

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start jefldqob
2⤵
- Launches sc.exe
- System Location Discovery: System Language Discovery
PID:2832

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\jefldqob\jvuitdlf.exe
C:\Windows\SysWOW64\jefldqob\jvuitdlf.exe /d"C:\Users\Admin\AppData\Local\Temp\1ed018195c5f31b6af29f1501af2990e_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2756

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
- System Location Discovery: System Language Discovery
PID:2956

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\jvuitdlf.exe

Filesize
12.0MB

MD5
0efbd54af4ac03a152b4195963fb3be9

SHA1
485f5af0625056b0f35108a20263c5714053f03b

SHA256
33d3bd7fa676b51666622e9f59a8b75ed6bf9e4e43053fcb7990d8721f1de5aa

SHA512
35ca19283a2a6d6c9575ed6d83406acb57f5bac9cb83cc89b95e4b163bf9303b3a35e6a28753a0686ca222d4cac74e560ad183eba37d50014b7f980a78f2cdac

Download Submit
memory/2352-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2352-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2352-2-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2352-15-0x0000000000020000-0x0000000000033000-memory.dmp

Filesize
76KB

Download
memory/2352-1-0x0000000000A10000-0x0000000000B10000-memory.dmp

Filesize
1024KB

Download
memory/2352-14-0x0000000000400000-0x0000000000938000-memory.dmp

Filesize
5.2MB

Download
memory/2756-13-0x0000000000400000-0x0000000000938000-memory.dmp

Filesize
5.2MB

Download
memory/2956-11-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2956-10-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2956-8-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2956-17-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download
memory/2956-18-0x00000000000C0000-0x00000000000D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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