tofsee | f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a

General

Target

JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe
Size

241KB
MD5

8866c6b22acbba4ab641339d23bdc9f3
SHA1

8ac8ce69741105015d7810e5e0a59cad7316fc77
SHA256

f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a
SHA512

029dca3423be718485ad36cab810e66ba7ae4294d63c4740e4187c3d458206cf08d344460684518b06351f31ceed64c35e6dfa76ff63b04631989631ab1569dc
SSDEEP

3072:EQKPNMYekPTg1n87zaHWgODOwF0H2UyorPePEO/6AlXUH1v5hu5xspXrk:KPqic1n0WHgDORLkE87EVvP0xs

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
4284	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\mmhhfcjc\ImagePath = "C:\\Windows\\SysWOW64\\mmhhfcjc\\ugsaalai.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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe

Deletes itself 1 IoCs

pid	Process
2252	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2416	ugsaalai.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2416 set thread context of 2252	2416	ugsaalai.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
220	sc.exe
1984	sc.exe
2512	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
3088	2032	WerFault.exe	82
4384	2416	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	ugsaalai.exe
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	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	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2032 wrote to memory of 396	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	83
PID 2032 wrote to memory of 396	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	83
PID 2032 wrote to memory of 396	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	83
PID 2032 wrote to memory of 4012	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	85
PID 2032 wrote to memory of 4012	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	85
PID 2032 wrote to memory of 4012	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	85
PID 2032 wrote to memory of 2512	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	87
PID 2032 wrote to memory of 2512	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	87
PID 2032 wrote to memory of 2512	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	87
PID 2032 wrote to memory of 220	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	89
PID 2032 wrote to memory of 220	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	89
PID 2032 wrote to memory of 220	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	89
PID 2032 wrote to memory of 1984	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	92
PID 2032 wrote to memory of 1984	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	92
PID 2032 wrote to memory of 1984	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	92
PID 2032 wrote to memory of 4284	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	95
PID 2032 wrote to memory of 4284	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	95
PID 2032 wrote to memory of 4284	2032	JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe	95
PID 2416 wrote to memory of 2252	2416	ugsaalai.exe	101
PID 2416 wrote to memory of 2252	2416	ugsaalai.exe	101
PID 2416 wrote to memory of 2252	2416	ugsaalai.exe	101
PID 2416 wrote to memory of 2252	2416	ugsaalai.exe	101
PID 2416 wrote to memory of 2252	2416	ugsaalai.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2032
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmhhfcjc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:396
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ugsaalai.exe" C:\Windows\SysWOW64\mmhhfcjc\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create mmhhfcjc binPath= "C:\Windows\SysWOW64\mmhhfcjc\ugsaalai.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2512
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description mmhhfcjc "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:220
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start mmhhfcjc
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1984
- 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:4284
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2032 -s 1180
  2⤵
  - Program crash
  PID:3088

C:\Windows\SysWOW64\mmhhfcjc\ugsaalai.exe
C:\Windows\SysWOW64\mmhhfcjc\ugsaalai.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_f4b79a481b4b93b8ec807688718d4ef72427eb9fa810e549b2b29b55feaf482a.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2416
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2416 -s 516
  2⤵
  - Program crash
  PID:4384

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 2032 -ip 2032
1⤵
PID:4544

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2416 -ip 2416
1⤵
PID:3564

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\ugsaalai.exe

Filesize
13.0MB

MD5
993380e7a5979db1a079585dbcd23fc4

SHA1
a673de3161c5e43bb7e6725837774fd9e1fe7717

SHA256
201bd5579e2d116a9ae5250be292b9e94133283397087b047f53b1fe26adae15

SHA512
fba05dad66e77f3ab23ccd80d06bf7787b0e2bfe924b3e858e991d3d1365fd5cc4fc1e393ef3f963923b6792c949fe89d37b27aee4679da45c66274f3d62f87b

Download Submit
memory/2032-1-0x00000000009A0000-0x0000000000AA0000-memory.dmp

Filesize
1024KB

Download
memory/2032-2-0x0000000000E00000-0x0000000000E13000-memory.dmp

Filesize
76KB

Download
memory/2032-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2032-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2032-9-0x0000000000E00000-0x0000000000E13000-memory.dmp

Filesize
76KB

Download
memory/2032-8-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2252-12-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/2252-14-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/2252-17-0x0000000000A10000-0x0000000000A25000-memory.dmp

Filesize
84KB

Download
memory/2416-11-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download
memory/2416-15-0x0000000000400000-0x000000000086C000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads