tofsee | 6d11a016ff70b46205d7ef21efb3fa132b878580a77ed923566257751dd7a11d

General

Target

f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe
Size

13.5MB
MD5

f5cbfe63e02723b835516647584848d4
SHA1

07dd6af989d6d11f4efcf5a9594912d851b10135
SHA256

6d11a016ff70b46205d7ef21efb3fa132b878580a77ed923566257751dd7a11d
SHA512

a5143335125344278d49a9eb6be29bbd8fb05aa84d00e01e5e05b2bee4243a8d45c2f469cb46f5e04af70679511b6a1ebc3ea261894dca3bb0fa0a498321b91f
SSDEEP

6144:x2BxZXDssssssssssssssssssssssssssssssssssssssssssssssssssssssssk:x4V

Score

10^/10

tofsee evasion persistence 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) 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

4652 netsh.exe

pid	process
4652	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\dncctyrz\ImagePath = "C:\\Windows\\SysWOW64\\dncctyrz\\lqddgfva.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:

f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1460 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

lqddgfva.exe

pid process

4960 lqddgfva.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

lqddgfva.exe

description pid process target process

PID 4960 set thread context of 1460 4960 lqddgfva.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

4704 sc.exe
3488 sc.exe
4168 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1460	svchost.exe

pid	process
4960	lqddgfva.exe

description	pid	process	target process
PID 4960 set thread context of 1460	4960	lqddgfva.exe	svchost.exe

pid	process
4704	sc.exe
3488	sc.exe
4168	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f5cbfe63e02723b835516647584848d4_JaffaCakes118.exelqddgfva.exe

description	pid	process	target process
PID 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	cmd.exe
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	sc.exe
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	netsh.exe
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	netsh.exe
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	netsh.exe
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	svchost.exe
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	svchost.exe
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	svchost.exe
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	svchost.exe
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4280

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dncctyrz\
2⤵
PID:4340

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lqddgfva.exe" C:\Windows\SysWOW64\dncctyrz\
2⤵
PID:1504

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create dncctyrz binPath= "C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe /d\"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4168

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description dncctyrz "wifi internet conection"
2⤵
- Launches sc.exe
PID:4704

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start dncctyrz
2⤵
- Launches sc.exe
PID:3488

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:4652

C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe
C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe /d"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4960

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1460

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\lqddgfva.exe
Filesize
12.4MB

MD5
a8b80f81ce5ee1703b6cbc91c1680167

SHA1
2e64d8b70d12e258da5f1062cd6d12a6c4c677a9

SHA256
6360049af317cba1e25d38da7913c805a69a4a24bebe4e3b45a0fc44289f9cd9

SHA512
778b2137216aa60340a441e80fc57ccb3fa4050dffcc40a12ddebb93533d186b6eb30bba12a84f3641758cf2d6f430997250e7ba27721ada059c6172cea10575

Download Submit
memory/1460-11-0x00000000003A0000-0x00000000003B5000-memory.dmp

Filesize
84KB

Download
memory/1460-15-0x00000000003A0000-0x00000000003B5000-memory.dmp

Filesize
84KB

Download
memory/1460-18-0x00000000003A0000-0x00000000003B5000-memory.dmp

Filesize
84KB

Download
memory/1460-17-0x00000000003A0000-0x00000000003B5000-memory.dmp

Filesize
84KB

Download
memory/1460-16-0x00000000003A0000-0x00000000003B5000-memory.dmp

Filesize
84KB

Download
memory/4280-6-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4280-1-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4280-2-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download
memory/4280-5-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4280-0-0x0000000000570000-0x0000000000571000-memory.dmp

Filesize
4KB

Download
memory/4960-8-0x0000000000540000-0x0000000000541000-memory.dmp

Filesize
4KB

Download
memory/4960-10-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4960-12-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4960-9-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads