tofsee | e44d53782bd777950f51c933a0d1b576c7804456d3cc87ad63f44b7dc424e817

General

Target

JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe
Size

13.8MB
MD5

010d8301c1f6d3953fde5e115bef1fdd
SHA1

fe225b1ab183a61f2a1cfc2434f5e23769a1ac7a
SHA256

e44d53782bd777950f51c933a0d1b576c7804456d3cc87ad63f44b7dc424e817
SHA512

5a9a48365f219de04aab19769109a7ee4f12f0ece9d8e9e2dbdfef108082d95920db193dd4b73448b233f581c021240267796a7f77fc997c12513a6f8f577464
SSDEEP

196608:kxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx3:

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
812	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\uwzzzssn\ImagePath = "C:\\Windows\\SysWOW64\\uwzzzssn\\hepusczw.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_010d8301c1f6d3953fde5e115bef1fdd.exe

Deletes itself 1 IoCs

pid	Process
3464	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2296	hepusczw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2296 set thread context of 3464	2296	hepusczw.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
2804	sc.exe
1308	sc.exe
2012	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
4596	1868	WerFault.exe	83
2140	2296	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	svchost.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	hepusczw.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1868 wrote to memory of 264	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	84
PID 1868 wrote to memory of 264	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	84
PID 1868 wrote to memory of 264	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	84
PID 1868 wrote to memory of 2568	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	86
PID 1868 wrote to memory of 2568	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	86
PID 1868 wrote to memory of 2568	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	86
PID 1868 wrote to memory of 2804	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	88
PID 1868 wrote to memory of 2804	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	88
PID 1868 wrote to memory of 2804	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	88
PID 1868 wrote to memory of 1308	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	90
PID 1868 wrote to memory of 1308	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	90
PID 1868 wrote to memory of 1308	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	90
PID 1868 wrote to memory of 2012	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	92
PID 1868 wrote to memory of 2012	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	92
PID 1868 wrote to memory of 2012	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	92
PID 1868 wrote to memory of 812	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	95
PID 1868 wrote to memory of 812	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	95
PID 1868 wrote to memory of 812	1868	JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe	95
PID 2296 wrote to memory of 3464	2296	hepusczw.exe	100
PID 2296 wrote to memory of 3464	2296	hepusczw.exe	100
PID 2296 wrote to memory of 3464	2296	hepusczw.exe	100
PID 2296 wrote to memory of 3464	2296	hepusczw.exe	100
PID 2296 wrote to memory of 3464	2296	hepusczw.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1868
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uwzzzssn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:264
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\hepusczw.exe" C:\Windows\SysWOW64\uwzzzssn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2568
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uwzzzssn binPath= "C:\Windows\SysWOW64\uwzzzssn\hepusczw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2804
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uwzzzssn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1308
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uwzzzssn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2012
- 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:812
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1868 -s 1184
  2⤵
  - Program crash
  PID:4596

C:\Windows\SysWOW64\uwzzzssn\hepusczw.exe
C:\Windows\SysWOW64\uwzzzssn\hepusczw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_010d8301c1f6d3953fde5e115bef1fdd.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2296
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3464
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2296 -s 516
  2⤵
  - Program crash
  PID:2140

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 1868 -ip 1868
1⤵
PID:1448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2296 -ip 2296
1⤵
PID:432

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\hepusczw.exe

Filesize
13.0MB

MD5
6a7c577c0be190a4e08939f01a5b6694

SHA1
8367e140ab8c7f3deda18c76d687232743bfba7f

SHA256
6e262f6d8b989ba22724504769453a189f1bad50c193a292aefba49111b676a2

SHA512
37c7e4c3d6b40963c8a61dde5e0b0355f284b5cd9b665495b72d099f4726880a0e2f1172a7bb7dc65c89d4c20712a404271a15675c774eb216876aae0ceb21e2

Download Submit
memory/1868-0-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/1868-1-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/1868-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1868-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1868-8-0x0000000004C60000-0x0000000004C73000-memory.dmp

Filesize
76KB

Download
memory/1868-7-0x0000000004C50000-0x0000000004C5D000-memory.dmp

Filesize
52KB

Download
memory/1868-6-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/2296-14-0x0000000000400000-0x0000000002F06000-memory.dmp

Filesize
43.0MB

Download
memory/3464-10-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/3464-12-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download
memory/3464-13-0x0000000001260000-0x0000000001275000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads