tofsee | 1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f

General

Target

JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe
Size

277KB
MD5

886521f6b302733ec56fa74e9eee797c
SHA1

426770987d11b12e6b9709a7064a143e39a2adbc
SHA256

1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f
SHA512

a267361d9f84755a8346a303c3ea7f65ee6b7a721c124fe12ba67531509d3ad2d9c3cf6f35fc0b29922f619e8f4a96895c29305c91894a476023fb508a5a01d9
SSDEEP

3072:Hdh4rj43qHj/zjgRYR6lVatBLufQxMmYq7sxkgaBCh:f4rj46/zjgRI2atBLTMYQiga

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

niflheimr.cn

jotunheim.name

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
748	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\tcgqmnxk\ImagePath = "C:\\Windows\\SysWOW64\\tcgqmnxk\\xepsgcek.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-1-5-21-2045521122-590294423-3465680274-1000\Control Panel\International\Geo\Nation	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe

Deletes itself 1 IoCs

pid	Process
1412	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1652	xepsgcek.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1652 set thread context of 1412	1652	xepsgcek.exe	105

Launches sc.exe 3 IoCs

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

pid	Process
1708	sc.exe
4968	sc.exe
2736	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
3252	3128	WerFault.exe	82
448	1652	WerFault.exe	96

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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.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	xepsgcek.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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 3128 wrote to memory of 388	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	83
PID 3128 wrote to memory of 388	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	83
PID 3128 wrote to memory of 388	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	83
PID 3128 wrote to memory of 3896	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	85
PID 3128 wrote to memory of 3896	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	85
PID 3128 wrote to memory of 3896	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	85
PID 3128 wrote to memory of 1708	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	87
PID 3128 wrote to memory of 1708	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	87
PID 3128 wrote to memory of 1708	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	87
PID 3128 wrote to memory of 4968	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	90
PID 3128 wrote to memory of 4968	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	90
PID 3128 wrote to memory of 4968	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	90
PID 3128 wrote to memory of 2736	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	94
PID 3128 wrote to memory of 2736	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	94
PID 3128 wrote to memory of 2736	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	94
PID 3128 wrote to memory of 748	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	97
PID 3128 wrote to memory of 748	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	97
PID 3128 wrote to memory of 748	3128	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	97
PID 1652 wrote to memory of 1412	1652	xepsgcek.exe	105
PID 1652 wrote to memory of 1412	1652	xepsgcek.exe	105
PID 1652 wrote to memory of 1412	1652	xepsgcek.exe	105
PID 1652 wrote to memory of 1412	1652	xepsgcek.exe	105
PID 1652 wrote to memory of 1412	1652	xepsgcek.exe	105

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3128
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\tcgqmnxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:388
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\xepsgcek.exe" C:\Windows\SysWOW64\tcgqmnxk\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3896
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create tcgqmnxk binPath= "C:\Windows\SysWOW64\tcgqmnxk\xepsgcek.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1708
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description tcgqmnxk "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4968
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start tcgqmnxk
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2736
- 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:748
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3128 -s 1044
  2⤵
  - Program crash
  PID:3252

C:\Windows\SysWOW64\tcgqmnxk\xepsgcek.exe
C:\Windows\SysWOW64\tcgqmnxk\xepsgcek.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1652
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1412
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1652 -s 536
  2⤵
  - Program crash
  PID:448

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 456 -p 3128 -ip 3128
1⤵
PID:1592

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 1652 -ip 1652
1⤵
PID:3948

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\xepsgcek.exe

Filesize
13.8MB

MD5
aa1fd8e1ae7737ab2c2a0f0d5b4234e1

SHA1
821dc163136a332fcde836e0e268ad35ee4f2637

SHA256
52e854354f5a87a41693e00922e91cc134de9def92211326dc2ed4bfd64af762

SHA512
e57dc6e9b484f85c9eca5a562851a900231c21103f0e8c5c23e220122943399a921c5ed0fda897f3744269aa427552e3334f4b47d253fde9916e53c871d87609

Download Submit
memory/1412-14-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/1412-17-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/1412-16-0x00000000005E0000-0x00000000005F5000-memory.dmp

Filesize
84KB

Download
memory/1652-12-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1652-11-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1652-13-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/1652-19-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/3128-8-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3128-7-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/3128-2-0x0000000000560000-0x0000000000573000-memory.dmp

Filesize
76KB

Download
memory/3128-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3128-4-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3128-1-0x0000000000670000-0x0000000000770000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads