tofsee | 4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58

General

Target

JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe
Size

286KB
MD5

30f334034890bf4e9978e88c3a8d289e
SHA1

c01f11ade66a776369c5e661ade581f5141f7e53
SHA256

4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58
SHA512

b3278c0ffca87a27d3bc80743a80b830cf94d88bee4791e21d1a0d9f31d719593e993ca897e86cb0d2b9262745bad7a5db04feab3ec2ad0de5640131863fc774
SSDEEP

3072:FFVyYf0kx6mLP1mrJpQ6mld1JCHyOzoLOS7XuWVOO5Z8jVw7DWk7MW+CJUBU4wuj:7Smz1UJ50JCHyU0XGUZiVOCYBJh4b

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
4172	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\fyjorjiz\ImagePath = "C:\\Windows\\SysWOW64\\fyjorjiz\\gznzrlna.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_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe

Deletes itself 1 IoCs

pid	Process
5060	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3636	gznzrlna.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3636 set thread context of 5060	3636	gznzrlna.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
4196	sc.exe
1924	sc.exe
1512	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
4584	1072	WerFault.exe	82
1588	3636	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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	gznzrlna.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	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1072 wrote to memory of 3620	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	83
PID 1072 wrote to memory of 3620	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	83
PID 1072 wrote to memory of 3620	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	83
PID 1072 wrote to memory of 368	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	85
PID 1072 wrote to memory of 368	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	85
PID 1072 wrote to memory of 368	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	85
PID 1072 wrote to memory of 4196	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	87
PID 1072 wrote to memory of 4196	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	87
PID 1072 wrote to memory of 4196	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	87
PID 1072 wrote to memory of 1924	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	90
PID 1072 wrote to memory of 1924	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	90
PID 1072 wrote to memory of 1924	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	90
PID 1072 wrote to memory of 1512	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	92
PID 1072 wrote to memory of 1512	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	92
PID 1072 wrote to memory of 1512	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	92
PID 1072 wrote to memory of 4172	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	95
PID 1072 wrote to memory of 4172	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	95
PID 1072 wrote to memory of 4172	1072	JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe	95
PID 3636 wrote to memory of 5060	3636	gznzrlna.exe	101
PID 3636 wrote to memory of 5060	3636	gznzrlna.exe	101
PID 3636 wrote to memory of 5060	3636	gznzrlna.exe	101
PID 3636 wrote to memory of 5060	3636	gznzrlna.exe	101
PID 3636 wrote to memory of 5060	3636	gznzrlna.exe	101

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1072
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fyjorjiz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3620
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\gznzrlna.exe" C:\Windows\SysWOW64\fyjorjiz\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:368
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create fyjorjiz binPath= "C:\Windows\SysWOW64\fyjorjiz\gznzrlna.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4196
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description fyjorjiz "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start fyjorjiz
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1512
- 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:4172
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1072 -s 1048
  2⤵
  - Program crash
  PID:4584

C:\Windows\SysWOW64\fyjorjiz\gznzrlna.exe
C:\Windows\SysWOW64\fyjorjiz\gznzrlna.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_4d9b3eaae7f591289d07eb6df10c78b68ad583b011ece723d4aaa669e19d8e58.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3636
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:5060
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3636 -s 532
  2⤵
  - Program crash
  PID:1588

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 1072 -ip 1072
1⤵
PID:3184

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3636 -ip 3636
1⤵
PID:5116

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\gznzrlna.exe

Filesize
12.2MB

MD5
31b7119be5648c5fb8c27359e15af0c5

SHA1
1238cc40f895de8124459cfb75c710ec5142fe26

SHA256
d9dab5d279851ccbce234345de0c5683d1745656f5fbc3a7147d5292995432f3

SHA512
0bb8353c557d50d7b561c6e6419f1dcbc3e28dea64e084b2ab00a419d0dac61f05da09004a4f419f672a8b023c379233614d4fc6d519616b3b47809e5645e1b5

Download Submit
memory/1072-2-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/1072-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1072-1-0x0000000002BA0000-0x0000000002CA0000-memory.dmp

Filesize
1024KB

Download
memory/1072-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1072-8-0x0000000002D00000-0x0000000002D13000-memory.dmp

Filesize
76KB

Download
memory/1072-7-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download
memory/3636-15-0x0000000000400000-0x0000000002B40000-memory.dmp

Filesize
39.2MB

Download
memory/5060-13-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/5060-14-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download
memory/5060-11-0x0000000000AD0000-0x0000000000AE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads