tofsee | b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1

General

Target

JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe
Size

271KB
MD5

9ae78f053aae1b5679c107ed4f82d88f
SHA1

d72d9f05b16847980c9f1eee05b921d8a426ff5b
SHA256

b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1
SHA512

fe10c528f9c03203540a5c605da73c833a20e4315320dc4448e73d782b19ea3efcc9f545325268df4aac3ff7dff433bb0321bb2351be528bfaa2bb946dfcb0d5
SSDEEP

6144:RnhFX60LF+3XXouScjVkARRROhxxpeTr/ekI:ljXFc3XY5M6Aczxp6L

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
444	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\pkppyuxo\ImagePath = "C:\\Windows\\SysWOW64\\pkppyuxo\\yfrenabv.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_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe

Executes dropped EXE 1 IoCs

pid	Process
512	yfrenabv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 512 set thread context of 5004	512	yfrenabv.exe	97

Launches sc.exe 3 IoCs

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

pid	Process
4788	sc.exe
3028	sc.exe
3392	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

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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	yfrenabv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1488 wrote to memory of 1504	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	83
PID 1488 wrote to memory of 1504	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	83
PID 1488 wrote to memory of 1504	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	83
PID 1488 wrote to memory of 3280	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	86
PID 1488 wrote to memory of 3280	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	86
PID 1488 wrote to memory of 3280	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	86
PID 1488 wrote to memory of 3028	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	88
PID 1488 wrote to memory of 3028	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	88
PID 1488 wrote to memory of 3028	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	88
PID 1488 wrote to memory of 3392	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	90
PID 1488 wrote to memory of 3392	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	90
PID 1488 wrote to memory of 3392	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	90
PID 1488 wrote to memory of 4788	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	92
PID 1488 wrote to memory of 4788	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	92
PID 1488 wrote to memory of 4788	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	92
PID 1488 wrote to memory of 444	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	95
PID 1488 wrote to memory of 444	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	95
PID 1488 wrote to memory of 444	1488	JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe	95
PID 512 wrote to memory of 5004	512	yfrenabv.exe	97
PID 512 wrote to memory of 5004	512	yfrenabv.exe	97
PID 512 wrote to memory of 5004	512	yfrenabv.exe	97
PID 512 wrote to memory of 5004	512	yfrenabv.exe	97
PID 512 wrote to memory of 5004	512	yfrenabv.exe	97

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pkppyuxo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1504
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yfrenabv.exe" C:\Windows\SysWOW64\pkppyuxo\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3280
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create pkppyuxo binPath= "C:\Windows\SysWOW64\pkppyuxo\yfrenabv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description pkppyuxo "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3392
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start pkppyuxo
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4788
- 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:444

C:\Windows\SysWOW64\pkppyuxo\yfrenabv.exe
C:\Windows\SysWOW64\pkppyuxo\yfrenabv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_b96c44175c196165d390f714e2f47bf188a355293dcb8c6b6b3b09e3a457d4e1.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:512
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - System Location Discovery: System Language Discovery
  PID:5004

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\yfrenabv.exe

Filesize
12.0MB

MD5
c283327ead90df92a990d52f297fbec4

SHA1
4ae7c912054e08a24839a9ab226e96eecfd6c8fc

SHA256
d9fa9788692777a8356374ba701fad0730672eecaeeb36288cbbb30219a62815

SHA512
a8f98a15a1f22380d12496c29f0f59b2668510746474c693334b76450a8b4865be6a79772fdbe76e0be3f0129e6440e0fab4003e32cee003dacf96ac6f35ac6e

Download Submit
memory/512-26-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-17-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-18-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-8-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-9-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-23-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-11-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-25-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/512-19-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-14-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1488-24-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-35-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-37-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1488-1-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/1488-22-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-10-0x0000000000660000-0x0000000000760000-memory.dmp

Filesize
1024KB

Download
memory/1488-16-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-36-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/1488-27-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-28-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-29-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-30-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-31-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-32-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-33-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/1488-34-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/5004-12-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/5004-21-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download
memory/5004-20-0x0000000000F20000-0x0000000000F35000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads