tofsee | 70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb

General

Target

JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe
Size

238KB
MD5

6a63a27463acb89e07b8cbf0f0433edc
SHA1

bc1a529aed74b225ce5e349049f33fbaa6bbe979
SHA256

70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb
SHA512

9e67ac8156b5e5db743db2261c2b3f420c5b35ccee2685c96cb7d3c8ba626087d8d27e3afa7a80f4ae64dc3cc45057f6c11f740611e70a46131d295f2157a5d6
SSDEEP

6144:mnuB6Towa8CWks6thYv7ITsq7igavwVf:muITowOs+hYv79

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
5108	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\jwmcrgbx\ImagePath = "C:\\Windows\\SysWOW64\\jwmcrgbx\\buiumgiv.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe

Deletes itself 1 IoCs

pid	Process
4804	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4048	buiumgiv.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4048 set thread context of 4804	4048	buiumgiv.exe	100

Launches sc.exe 3 IoCs

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

pid	Process
3152	sc.exe
1288	sc.exe
1460	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
5068	3028	WerFault.exe	83
1632	4048	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	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	buiumgiv.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3028 wrote to memory of 1228	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	84
PID 3028 wrote to memory of 1228	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	84
PID 3028 wrote to memory of 1228	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	84
PID 3028 wrote to memory of 3708	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	86
PID 3028 wrote to memory of 3708	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	86
PID 3028 wrote to memory of 3708	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	86
PID 3028 wrote to memory of 3152	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	88
PID 3028 wrote to memory of 3152	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	88
PID 3028 wrote to memory of 3152	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	88
PID 3028 wrote to memory of 1288	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	90
PID 3028 wrote to memory of 1288	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	90
PID 3028 wrote to memory of 1288	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	90
PID 3028 wrote to memory of 1460	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	92
PID 3028 wrote to memory of 1460	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	92
PID 3028 wrote to memory of 1460	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	92
PID 3028 wrote to memory of 5108	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	95
PID 3028 wrote to memory of 5108	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	95
PID 3028 wrote to memory of 5108	3028	JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe	95
PID 4048 wrote to memory of 4804	4048	buiumgiv.exe	100
PID 4048 wrote to memory of 4804	4048	buiumgiv.exe	100
PID 4048 wrote to memory of 4804	4048	buiumgiv.exe	100
PID 4048 wrote to memory of 4804	4048	buiumgiv.exe	100
PID 4048 wrote to memory of 4804	4048	buiumgiv.exe	100

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3028
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jwmcrgbx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1228
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\buiumgiv.exe" C:\Windows\SysWOW64\jwmcrgbx\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jwmcrgbx binPath= "C:\Windows\SysWOW64\jwmcrgbx\buiumgiv.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jwmcrgbx "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1288
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jwmcrgbx
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1460
- 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:5108
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3028 -s 660
  2⤵
  - Program crash
  PID:5068

C:\Windows\SysWOW64\jwmcrgbx\buiumgiv.exe
C:\Windows\SysWOW64\jwmcrgbx\buiumgiv.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_70c4dc37a874574a2492bb6748f1a59ebc65f552cd5897376f590b97a39bfacb.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4048
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4804
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4048 -s 528
  2⤵
  - Program crash
  PID:1632

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 420 -p 3028 -ip 3028
1⤵
PID:4600

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 548 -p 4048 -ip 4048
1⤵
PID:3916

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\buiumgiv.exe

Filesize
12.2MB

MD5
42e81a9515c4ebbc454cc521c0e0de47

SHA1
9c7d8bea03034aec14fc001399a6ee01992817c8

SHA256
63276a6fb4a9ed28a1dd7b090042a4cb9ffde0905be54deada747814a4e61935

SHA512
ab09dc4198b0867f69d08063365284cb5c1043920e2b4f6c6676ed84d90c8d5860b8bc15d35796bd5dc4456fe1d9f39cbe3c109219dfa28f4581b46da0f73a0a

Download Submit
memory/3028-7-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3028-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3028-1-0x00000000021D0000-0x00000000021E3000-memory.dmp

Filesize
76KB

Download
memory/3028-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3028-8-0x00000000021D0000-0x00000000021E3000-memory.dmp

Filesize
76KB

Download
memory/3028-0-0x00000000005F0000-0x00000000005FD000-memory.dmp

Filesize
52KB

Download
memory/3028-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4048-11-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4048-12-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4048-10-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4048-17-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/4804-13-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download
memory/4804-15-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download
memory/4804-16-0x0000000000FD0000-0x0000000000FE5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads