tofsee | 96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259

General

Target

JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe
Size

292KB
MD5

8a1e0ccf9945d654f0bceffc3e387c6e
SHA1

7cd2eeac9b54711d9a23f9a0abc30a9407837111
SHA256

96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259
SHA512

3e88a1c37cf391652b582578c75e702556231afb44051406bf09171b9e382ce4d580bb41ac180da977f81fee440ac22151da5d68040eb8ee45b7d476f6f69894
SSDEEP

6144:niMhhMfj568D7SXuZet0yobAPtXX85CK0:/hhyj5z3SXuZet0yobAp85

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
3936	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\mmuyfzdz\ImagePath = "C:\\Windows\\SysWOW64\\mmuyfzdz\\lyhefkwj.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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe

Deletes itself 1 IoCs

pid	Process
4596	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
208	lyhefkwj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 208 set thread context of 4596	208	lyhefkwj.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
4192	sc.exe
1804	sc.exe
948	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
992	4860	WerFault.exe	81
912	208	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	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.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	lyhefkwj.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 4860 wrote to memory of 3184	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	82
PID 4860 wrote to memory of 3184	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	82
PID 4860 wrote to memory of 3184	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	82
PID 4860 wrote to memory of 4268	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	84
PID 4860 wrote to memory of 4268	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	84
PID 4860 wrote to memory of 4268	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	84
PID 4860 wrote to memory of 4192	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	86
PID 4860 wrote to memory of 4192	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	86
PID 4860 wrote to memory of 4192	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	86
PID 4860 wrote to memory of 1804	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	88
PID 4860 wrote to memory of 1804	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	88
PID 4860 wrote to memory of 1804	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	88
PID 4860 wrote to memory of 948	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	90
PID 4860 wrote to memory of 948	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	90
PID 4860 wrote to memory of 948	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	90
PID 4860 wrote to memory of 3936	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	93
PID 4860 wrote to memory of 3936	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	93
PID 4860 wrote to memory of 3936	4860	JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe	93
PID 208 wrote to memory of 4596	208	lyhefkwj.exe	98
PID 208 wrote to memory of 4596	208	lyhefkwj.exe	98
PID 208 wrote to memory of 4596	208	lyhefkwj.exe	98
PID 208 wrote to memory of 4596	208	lyhefkwj.exe	98
PID 208 wrote to memory of 4596	208	lyhefkwj.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4860
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmuyfzdz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3184
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lyhefkwj.exe" C:\Windows\SysWOW64\mmuyfzdz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4268
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mmuyfzdz binPath= "C:\Windows\SysWOW64\mmuyfzdz\lyhefkwj.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mmuyfzdz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mmuyfzdz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:948
- 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:3936
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4860 -s 796
  2⤵
  - Program crash
  PID:992

C:\Windows\SysWOW64\mmuyfzdz\lyhefkwj.exe
C:\Windows\SysWOW64\mmuyfzdz\lyhefkwj.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_96341cf7fd7cd1943d786f67fc1f12a5d8443b78c4604a6acf3ad03d76382259.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:208
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4596
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 208 -s 532
  2⤵
  - Program crash
  PID:912

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4860 -ip 4860
1⤵
PID:4944

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 208 -ip 208
1⤵
PID:2696

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\lyhefkwj.exe

Filesize
11.8MB

MD5
f0ec3640f5070fea77aa888c664ac3f1

SHA1
b5bab4ec504c2338a421021c103f0952ed3d8f02

SHA256
86e8ca7cd54971883f8688828007ec028f9f00733c3765dc535bee50d95f2758

SHA512
c0d5a7e2bb5fa6b4a2c7dcea33a5f2df77aef98e5b34d76be32ba4428fb54df758d1c0c181eae0aadc09435fcdcc4a68fad4da448ca4f890bf7206e511c48d86

Download Submit
memory/208-15-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download
memory/4596-11-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/4596-13-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/4596-14-0x00000000007A0000-0x00000000007B5000-memory.dmp

Filesize
84KB

Download
memory/4860-2-0x0000000002CF0000-0x0000000002D03000-memory.dmp

Filesize
76KB

Download
memory/4860-1-0x0000000002DC0000-0x0000000002EC0000-memory.dmp

Filesize
1024KB

Download
memory/4860-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4860-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4860-8-0x0000000002CF0000-0x0000000002D03000-memory.dmp

Filesize
76KB

Download
memory/4860-7-0x0000000000400000-0x0000000002B41000-memory.dmp

Filesize
39.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads