tofsee | 00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954

General

Target

f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe
Size

11.6MB
MD5

f97ac5a687cc94db960df62fb910a74a
SHA1

24b5c7775506327081ea3ed0093c62d938dd50e4
SHA256

00423b5dc446d975260c85ace9a92f27398430fd56bbb3d42e190d281de8d954
SHA512

ab81fd40d42ad8dd102b48906d5fba078360001cb300743b8e90849bc38d22f40302b6e26ee5d45f0b6bf1bd082e0293adee78ed3e21668c3c55b014d9746c0b
SSDEEP

196608:QPHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHn:Q

Score

10^/10

tofsee evasion persistence 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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

840 netsh.exe

pid	process
840	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\fsuimfbb\ImagePath = "C:\\Windows\\SysWOW64\\fsuimfbb\\tnjpakci.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:

f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-776854024-226333264-2052258302-1000\Control Panel\International\Geo\Nation	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3924 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tnjpakci.exe

pid process

1064 tnjpakci.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tnjpakci.exe

description pid process target process

PID 1064 set thread context of 3924 1064 tnjpakci.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

2448 sc.exe
3068 sc.exe
4884 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3196 4636 WerFault.exe f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe
2068 1064 WerFault.exe tnjpakci.exe

pid	process
3924	svchost.exe

pid	process
1064	tnjpakci.exe

description	pid	process	target process
PID 1064 set thread context of 3924	1064	tnjpakci.exe	svchost.exe

pid	process
2448	sc.exe
3068	sc.exe
4884	sc.exe

pid	pid_target	process	target process
3196	4636	WerFault.exe	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe
2068	1064	WerFault.exe	tnjpakci.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exetnjpakci.exe

description	pid	process	target process
PID 4636 wrote to memory of 5064	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 5064	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 5064	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 3940	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 3940	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 3940	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	cmd.exe
PID 4636 wrote to memory of 2448	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 2448	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 2448	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 3068	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 3068	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 3068	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 4884	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 4884	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 4884	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	sc.exe
PID 4636 wrote to memory of 840	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	netsh.exe
PID 4636 wrote to memory of 840	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	netsh.exe
PID 4636 wrote to memory of 840	4636	f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe	netsh.exe
PID 1064 wrote to memory of 3924	1064	tnjpakci.exe	svchost.exe
PID 1064 wrote to memory of 3924	1064	tnjpakci.exe	svchost.exe
PID 1064 wrote to memory of 3924	1064	tnjpakci.exe	svchost.exe
PID 1064 wrote to memory of 3924	1064	tnjpakci.exe	svchost.exe
PID 1064 wrote to memory of 3924	1064	tnjpakci.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4636

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\fsuimfbb\
2⤵
PID:5064

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tnjpakci.exe" C:\Windows\SysWOW64\fsuimfbb\
2⤵
PID:3940

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create fsuimfbb binPath= "C:\Windows\SysWOW64\fsuimfbb\tnjpakci.exe /d\"C:\Users\Admin\AppData\Local\Temp\f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2448

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description fsuimfbb "wifi internet conection"
2⤵
- Launches sc.exe
PID:3068

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start fsuimfbb
2⤵
- Launches sc.exe
PID:4884

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
PID:840

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4636 -s 1280
2⤵
- Program crash
PID:3196

C:\Windows\SysWOW64\fsuimfbb\tnjpakci.exe
C:\Windows\SysWOW64\fsuimfbb\tnjpakci.exe /d"C:\Users\Admin\AppData\Local\Temp\f97ac5a687cc94db960df62fb910a74a_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1064

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3924

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1064 -s 512
2⤵
- Program crash
PID:2068

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 4636 -ip 4636
1⤵
PID:2264

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1064 -ip 1064
1⤵
PID:2700

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

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

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\AppData\Local\Temp\tnjpakci.exe
Filesize
10.2MB

MD5
eddb8dea99c5cc15889921105e499394

SHA1
16fd49cbdb02d8b61d67c5e9e46b8dcd9a9876cf

SHA256
a4b2169492d8fd513cac41c89c4094e8b81188a425ba2d0eebfefc93adc4cd36

SHA512
053a943464d1a83ff8313b40fbf217df3e22f340ad0f613aa247c5d86558752ac0f95d149affc2c42cc0d379f8fe24c571e9ec18d01a52e448e2a31fbdd8dac3

Download Submit
memory/1064-10-0x0000000000B10000-0x0000000000C10000-memory.dmp

Filesize
1024KB

Download
memory/1064-12-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/1064-17-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/3924-11-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/3924-15-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/3924-16-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/3924-18-0x0000000000B50000-0x0000000000B65000-memory.dmp

Filesize
84KB

Download
memory/4636-3-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4636-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4636-8-0x0000000000400000-0x0000000000870000-memory.dmp

Filesize
4.4MB

Download
memory/4636-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/4636-1-0x0000000000AE0000-0x0000000000BE0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads