tofsee | 03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9

General

Target

26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
Size

127KB
MD5

26f79e78a4b445e1da768ce79e82c95b
SHA1

3aedd60770c0179990df20eb9bfc81904297c10d
SHA256

03c3bf89ec80ccc2ebb578d871ecda58b8623d0fcaac4fc95981ea15aeaa7ba9
SHA512

ace209673d901058793d806c3d033d5c676d33898fc032b39b23f8c4a241694f0e7dba14968076494b64d4d687bd0391d69ab9689e46ef99d076a41983a94e39
SSDEEP

3072:DR9RULLkf1SfmmzUhJUVWZ3KOcPpKEK6ARbF:DZaLq1SfmmIoi6BPprKbF

Score

10^/10

tofsee evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.ru

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan 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

Processes:

netsh.exe

pid process

724 netsh.exe

pid	process
724	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\bmyscgoy\ImagePath = "C:\\Windows\\SysWOW64\\bmyscgoy\\ddepkljr.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

Processes:

26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1015551233-1106003478-1645743776-1000\Control Panel\International\Geo\Nation	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

4608 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

ddepkljr.exe

pid process

4376 ddepkljr.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

ddepkljr.exe

description pid process target process

PID 4376 set thread context of 4608 4376 ddepkljr.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2968 sc.exe
3432 sc.exe
1040 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
4608	svchost.exe

pid	process
4376	ddepkljr.exe

description	pid	process	target process
PID 4376 set thread context of 4608	4376	ddepkljr.exe	svchost.exe

pid	process
2968	sc.exe
3432	sc.exe
1040	sc.exe

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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3756 4848 WerFault.exe 26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
2192 4376 WerFault.exe ddepkljr.exe

pid	pid_target	process	target process
3756	4848	WerFault.exe	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
2192	4376	WerFault.exe	ddepkljr.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exeddepkljr.exe

description	pid	process	target process
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 228	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 2600	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	cmd.exe
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 2968	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 3432	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 1040	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	sc.exe
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	netsh.exe
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	netsh.exe
PID 4848 wrote to memory of 724	4848	26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe	netsh.exe
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	svchost.exe
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	svchost.exe
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	svchost.exe
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	svchost.exe
PID 4376 wrote to memory of 4608	4376	ddepkljr.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4848

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bmyscgoy\
2⤵
PID:228

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ddepkljr.exe" C:\Windows\SysWOW64\bmyscgoy\
2⤵
PID:2600

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create bmyscgoy binPath= "C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe /d\"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2968

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description bmyscgoy "wifi internet conection"
2⤵
- Launches sc.exe
PID:3432

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start bmyscgoy
2⤵
- Launches sc.exe
PID:1040

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
PID:724

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4848 -s 1300
2⤵
- Program crash
PID:3756

C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe
C:\Windows\SysWOW64\bmyscgoy\ddepkljr.exe /d"C:\Users\Admin\AppData\Local\Temp\26f79e78a4b445e1da768ce79e82c95b_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4376

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:4608

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4376 -s 516
2⤵
- Program crash
PID:2192

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 4848 -ip 4848
1⤵
PID:1496

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 472 -p 4376 -ip 4376
1⤵
PID:2412

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\ddepkljr.exe
Filesize
14.4MB

MD5
d97e762b68517137fc84ee0be32343c7

SHA1
b18ad73d124f20ba9ba4a2ea67c4d040a217ed09

SHA256
d012d681886e3422dc12eda82259d85a12d024fbbc21af6c007e21c72a396ddc

SHA512
1f1dd30521c5688f97a73fe3dd8cd8a8f6c8e1dc3cc6eb55b48008140629b39114ba153384a8cc39b192ce28f7d7ebeed9f56002354ab8517c775ec5e45365ee

Download Submit
memory/4376-14-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4376-20-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4376-12-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4376-13-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4608-15-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4608-17-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4608-18-0x0000000000A40000-0x0000000000A55000-memory.dmp

Filesize
84KB

Download
memory/4848-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4848-9-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download
memory/4848-1-0x00000000007A0000-0x00000000008A0000-memory.dmp

Filesize
1024KB

Download
memory/4848-7-0x0000000000400000-0x00000000004CA000-memory.dmp

Filesize
808KB

Download
memory/4848-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4848-2-0x0000000000610000-0x0000000000623000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads