tofsee | cf522c5d8dd5027511930f29caf7574dc75191ed49412feb5805535a6f173230

General

Target

JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe
Size

11.3MB
MD5

65bf617966af7e9a99e4460c251e3c41
SHA1

b5571037498d0fb035f7aee1dcb97930f37d3322
SHA256

cf522c5d8dd5027511930f29caf7574dc75191ed49412feb5805535a6f173230
SHA512

66bbc89c7586e70e067a2589bb9c464137b1f5a9e100febdd81d5c4ff1ee02f6e33678f433a5e1242291b21eb0fc0032cb17556caa828017eabd1c00bc62974f
SSDEEP

196608:jXPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPPf:j

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
4916	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\otzmnuwi\ImagePath = "C:\\Windows\\SysWOW64\\otzmnuwi\\wdbmrmao.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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe

Deletes itself 1 IoCs

pid	Process
3204	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2652	wdbmrmao.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2652 set thread context of 3204	2652	wdbmrmao.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4688	sc.exe
3684	sc.exe
528	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
3292	3672	WerFault.exe	82
3108	2652	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wdbmrmao.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3672 wrote to memory of 4940	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	83
PID 3672 wrote to memory of 4940	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	83
PID 3672 wrote to memory of 4940	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	83
PID 3672 wrote to memory of 212	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	85
PID 3672 wrote to memory of 212	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	85
PID 3672 wrote to memory of 212	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	85
PID 3672 wrote to memory of 4688	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	87
PID 3672 wrote to memory of 4688	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	87
PID 3672 wrote to memory of 4688	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	87
PID 3672 wrote to memory of 3684	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	90
PID 3672 wrote to memory of 3684	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	90
PID 3672 wrote to memory of 3684	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	90
PID 3672 wrote to memory of 528	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	92
PID 3672 wrote to memory of 528	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	92
PID 3672 wrote to memory of 528	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	92
PID 3672 wrote to memory of 4916	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	95
PID 3672 wrote to memory of 4916	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	95
PID 3672 wrote to memory of 4916	3672	JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe	95
PID 2652 wrote to memory of 3204	2652	wdbmrmao.exe	101
PID 2652 wrote to memory of 3204	2652	wdbmrmao.exe	101
PID 2652 wrote to memory of 3204	2652	wdbmrmao.exe	101
PID 2652 wrote to memory of 3204	2652	wdbmrmao.exe	101
PID 2652 wrote to memory of 3204	2652	wdbmrmao.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3672
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\otzmnuwi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4940
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wdbmrmao.exe" C:\Windows\SysWOW64\otzmnuwi\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:212
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create otzmnuwi binPath= "C:\Windows\SysWOW64\otzmnuwi\wdbmrmao.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4688
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description otzmnuwi "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start otzmnuwi
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:528
- 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:4916
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3672 -s 1200
  2⤵
  - Program crash
  PID:3292

C:\Windows\SysWOW64\otzmnuwi\wdbmrmao.exe
C:\Windows\SysWOW64\otzmnuwi\wdbmrmao.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_65bf617966af7e9a99e4460c251e3c41.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3204
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2652 -s 508
  2⤵
  - Program crash
  PID:3108

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3672 -ip 3672
1⤵
PID:1796

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2652 -ip 2652
1⤵
PID:4012

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\wdbmrmao.exe

Filesize
11.1MB

MD5
6a1d001bfb91747b78182d8b6872a0cd

SHA1
fb482849f89dd34f296c34cd0998c5bd2ef0ed7c

SHA256
2434def1247573a61478449eed81617d0e1a5d7565a19d2db49237a2816a32d1

SHA512
cc55886f69b257d0c0505ac7fef85513d30c3eb4266a42529ebef36473ab90cf5b3ae0861029625e62ae81c5048c01af4723ecaabb8dcbe9bd02945a00b7d958

Download Submit
memory/2652-14-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/2652-15-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3204-11-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3204-13-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3204-16-0x0000000000F90000-0x0000000000FA5000-memory.dmp

Filesize
84KB

Download
memory/3672-1-0x0000000000A50000-0x0000000000B50000-memory.dmp

Filesize
1024KB

Download
memory/3672-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/3672-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-8-0x0000000000400000-0x0000000000871000-memory.dmp

Filesize
4.4MB

Download
memory/3672-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3672-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads