tofsee | 116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90

General

Target

JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe
Size

294KB
MD5

a1bdfd66929511e7bbcc0ce444d1a0c0
SHA1

dcbaebdb5056efacf8175f9ee02dadbbadc3133b
SHA256

116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90
SHA512

3e72e65bd3cbf4f518f3c25cd149f99282cd351cd79899081688fb019d4ec3860c30b0076f096bd06fe844720eca0dce5309740b92e0c5c4f206818aebc31fbc
SSDEEP

6144:qZVs9POvu5Qi21Dqcjah3gd01p9JQ98JCYkM:qMmuGVDqcld039JQ0C

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

patmushta.info

parubey.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
1656	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\rjaupmce\ImagePath = "C:\\Windows\\SysWOW64\\rjaupmce\\exmrkmjs.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-1-5-21-493223053-2004649691-1575712786-1000\Control Panel\International\Geo\Nation	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe

Deletes itself 1 IoCs

pid	Process
2356	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
116	exmrkmjs.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 116 set thread context of 2356	116	exmrkmjs.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
216	sc.exe
4408	sc.exe
396	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
4944	392	WerFault.exe	82
5008	116	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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.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	exmrkmjs.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 392 wrote to memory of 2740	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	83
PID 392 wrote to memory of 2740	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	83
PID 392 wrote to memory of 2740	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	83
PID 392 wrote to memory of 1072	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	85
PID 392 wrote to memory of 1072	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	85
PID 392 wrote to memory of 1072	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	85
PID 392 wrote to memory of 216	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	87
PID 392 wrote to memory of 216	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	87
PID 392 wrote to memory of 216	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	87
PID 392 wrote to memory of 4408	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	89
PID 392 wrote to memory of 4408	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	89
PID 392 wrote to memory of 4408	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	89
PID 392 wrote to memory of 396	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	92
PID 392 wrote to memory of 396	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	92
PID 392 wrote to memory of 396	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	92
PID 392 wrote to memory of 1656	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	95
PID 392 wrote to memory of 1656	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	95
PID 392 wrote to memory of 1656	392	JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe	95
PID 116 wrote to memory of 2356	116	exmrkmjs.exe	101
PID 116 wrote to memory of 2356	116	exmrkmjs.exe	101
PID 116 wrote to memory of 2356	116	exmrkmjs.exe	101
PID 116 wrote to memory of 2356	116	exmrkmjs.exe	101
PID 116 wrote to memory of 2356	116	exmrkmjs.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rjaupmce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2740
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\exmrkmjs.exe" C:\Windows\SysWOW64\rjaupmce\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1072
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rjaupmce binPath= "C:\Windows\SysWOW64\rjaupmce\exmrkmjs.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:216
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rjaupmce "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rjaupmce
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:396
- 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:1656
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 392 -s 1240
  2⤵
  - Program crash
  PID:4944

C:\Windows\SysWOW64\rjaupmce\exmrkmjs.exe
C:\Windows\SysWOW64\rjaupmce\exmrkmjs.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_116b97527179910ca3fc8f83b19b462c9458e9171b6b8fee2d5cb15f0e7bea90.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:116
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2356
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 116 -s 532
  2⤵
  - Program crash
  PID:5008

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 392 -ip 392
1⤵
PID:1924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 116 -ip 116
1⤵
PID:3068

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\exmrkmjs.exe

Filesize
14.3MB

MD5
abe5a0e1e057a2cd5a1f996fd78076bb

SHA1
bb92ca18033dedd9168859e4010923a1f4254e89

SHA256
c62702eb86eef45b0e738cb91358a8e14e751bd3cc3753df922a8b2a79bee4ad

SHA512
9528f31678b9b0e6695035b7cf6beaebdce763bef52682da2d531945680e942a017a711a2fb77edb469235c7d2efefebbc06ed19935e78a56cc1573bd9009b3f

Download Submit
memory/116-11-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/116-16-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/392-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/392-1-0x0000000000600000-0x0000000000700000-memory.dmp

Filesize
1024KB

Download
memory/392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-7-0x0000000000400000-0x000000000045F000-memory.dmp

Filesize
380KB

Download
memory/392-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/392-8-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2356-12-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download
memory/2356-14-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download
memory/2356-15-0x0000000000480000-0x0000000000495000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads