tofsee | 73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86

General

Target

JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe
Size

287KB
MD5

508ea1cca364e2f73832dd3ef1160a84
SHA1

daab9d02720b6609f64628388611d09e02433633
SHA256

73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86
SHA512

39bec63482d99132d5ac18b5fdd8e22e01f5dc02b9ee458d37b2d271494356d23f6f7abe17ac020b45657fea476b52973a847005ec6ca4f1a576d2498fdc634f
SSDEEP

6144:uuj9qXmzAuZ8PT6HMgTp915tMvuDH4PKa7tqY:3EXrE8PT6HMgTp96vaY77o

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
3196	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\nuelmtdk\ImagePath = "C:\\Windows\\SysWOW64\\nuelmtdk\\uniuyny.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_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe

Deletes itself 1 IoCs

pid	Process
536	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
392	uniuyny.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 392 set thread context of 536	392	uniuyny.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1752	sc.exe
3468	sc.exe
2892	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
220	1620	WerFault.exe	81
4732	392	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	cmd.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uniuyny.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.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 1620 wrote to memory of 2388	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	82
PID 1620 wrote to memory of 2388	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	82
PID 1620 wrote to memory of 2388	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	82
PID 1620 wrote to memory of 4024	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	84
PID 1620 wrote to memory of 4024	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	84
PID 1620 wrote to memory of 4024	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	84
PID 1620 wrote to memory of 1752	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	86
PID 1620 wrote to memory of 1752	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	86
PID 1620 wrote to memory of 1752	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	86
PID 1620 wrote to memory of 3468	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	88
PID 1620 wrote to memory of 3468	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	88
PID 1620 wrote to memory of 3468	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	88
PID 1620 wrote to memory of 2892	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	90
PID 1620 wrote to memory of 2892	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	90
PID 1620 wrote to memory of 2892	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	90
PID 1620 wrote to memory of 3196	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	93
PID 1620 wrote to memory of 3196	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	93
PID 1620 wrote to memory of 3196	1620	JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe	93
PID 392 wrote to memory of 536	392	uniuyny.exe	98
PID 392 wrote to memory of 536	392	uniuyny.exe	98
PID 392 wrote to memory of 536	392	uniuyny.exe	98
PID 392 wrote to memory of 536	392	uniuyny.exe	98
PID 392 wrote to memory of 536	392	uniuyny.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nuelmtdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\uniuyny.exe" C:\Windows\SysWOW64\nuelmtdk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4024
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nuelmtdk binPath= "C:\Windows\SysWOW64\nuelmtdk\uniuyny.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1752
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nuelmtdk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3468
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nuelmtdk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2892
- 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:3196
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1620 -s 1340
  2⤵
  - Program crash
  PID:220

C:\Windows\SysWOW64\nuelmtdk\uniuyny.exe
C:\Windows\SysWOW64\nuelmtdk\uniuyny.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_73ce70fc473c2e6bad991731f810ba9d3ef400fd3788b4e45339068f69807b86.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:536
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 516
  2⤵
  - Program crash
  PID:4732

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 1620 -ip 1620
1⤵
PID:3864

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 392 -ip 392
1⤵
PID:3176

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\uniuyny.exe

Filesize
10.5MB

MD5
f4485b2859bea22ed5b5afa924871e13

SHA1
a5e07976622dda771857e252ed14cf83b2d7937f

SHA256
82012f4a6d764b5c704bb24440c748f0fe3c0db517e8777f691491b9a11486b5

SHA512
c9055953b5b021b25e344e873498f127fe6605d9d2ca4d34be2ee6e5ba9673b73e7decf7cb2239980b83b915566d61a18213de8489cb0fcff3206017fb7ee8fd

Download Submit
memory/392-15-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download
memory/536-13-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/536-11-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/536-14-0x0000000000C90000-0x0000000000CA5000-memory.dmp

Filesize
84KB

Download
memory/1620-2-0x00000000048A0000-0x00000000048B3000-memory.dmp

Filesize
76KB

Download
memory/1620-1-0x0000000002D90000-0x0000000002E90000-memory.dmp

Filesize
1024KB

Download
memory/1620-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1620-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1620-8-0x00000000048A0000-0x00000000048B3000-memory.dmp

Filesize
76KB

Download
memory/1620-7-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads