tofsee | 817c64580c9550a7e0cd91965c6397328868a6b13f2b4710de742de213746af2

General

Target

f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe
Size

14.0MB
MD5

f6688fc48cbe1c59e618a34f42939d97
SHA1

ce93f51dbf4ca4ee41113ef973bc8affaa4cad90
SHA256

817c64580c9550a7e0cd91965c6397328868a6b13f2b4710de742de213746af2
SHA512

49e7a804d3a19aba2703beaa8f5d065c04b8f49ffa478916b9906c6c806d5e85bfbd5e7604d3e0e46a3c1c9585dc304765d503d3967fe0e1ceb5b98c2f9288d8
SSDEEP

49152:CZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZ:

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

3200 netsh.exe

pid	process
3200	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\mmmlnjx\ImagePath = "C:\\Windows\\SysWOW64\\mmmlnjx\\clbpqetz.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:

f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1196 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

clbpqetz.exe

pid process

1968 clbpqetz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

clbpqetz.exe

description pid process target process

PID 1968 set thread context of 1196 1968 clbpqetz.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

2588 sc.exe
2776 sc.exe
2372 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

3552 3620 WerFault.exe f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe
1440 1968 WerFault.exe clbpqetz.exe

pid	process
1196	svchost.exe

pid	process
1968	clbpqetz.exe

description	pid	process	target process
PID 1968 set thread context of 1196	1968	clbpqetz.exe	svchost.exe

pid	process
2588	sc.exe
2776	sc.exe
2372	sc.exe

pid	pid_target	process	target process
3552	3620	WerFault.exe	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe
1440	1968	WerFault.exe	clbpqetz.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.execlbpqetz.exe

description	pid	process	target process
PID 3620 wrote to memory of 1912	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 1912	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 1912	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 4728	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 4728	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 4728	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	cmd.exe
PID 3620 wrote to memory of 2588	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2588	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2588	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2776	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2776	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2776	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2372	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2372	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 2372	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	sc.exe
PID 3620 wrote to memory of 3200	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	netsh.exe
PID 3620 wrote to memory of 3200	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	netsh.exe
PID 3620 wrote to memory of 3200	3620	f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe	netsh.exe
PID 1968 wrote to memory of 1196	1968	clbpqetz.exe	svchost.exe
PID 1968 wrote to memory of 1196	1968	clbpqetz.exe	svchost.exe
PID 1968 wrote to memory of 1196	1968	clbpqetz.exe	svchost.exe
PID 1968 wrote to memory of 1196	1968	clbpqetz.exe	svchost.exe
PID 1968 wrote to memory of 1196	1968	clbpqetz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3620

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\mmmlnjx\
2⤵
PID:1912

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\clbpqetz.exe" C:\Windows\SysWOW64\mmmlnjx\
2⤵
PID:4728

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create mmmlnjx binPath= "C:\Windows\SysWOW64\mmmlnjx\clbpqetz.exe /d\"C:\Users\Admin\AppData\Local\Temp\f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2588

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description mmmlnjx "wifi internet conection"
2⤵
- Launches sc.exe
PID:2776

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start mmmlnjx
2⤵
- Launches sc.exe
PID:2372

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:3200

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3620 -s 792
2⤵
- Program crash
PID:3552

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 356 -p 3620 -ip 3620
1⤵
PID:4888

C:\Windows\SysWOW64\mmmlnjx\clbpqetz.exe
C:\Windows\SysWOW64\mmmlnjx\clbpqetz.exe /d"C:\Users\Admin\AppData\Local\Temp\f6688fc48cbe1c59e618a34f42939d97_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1968

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:1196

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1968 -s 532
2⤵
- Program crash
PID:1440

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 1968 -ip 1968
1⤵
PID:4860

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\clbpqetz.exe
Filesize
13.9MB

MD5
b3a47544c71584a5dbe657733a6e2f79

SHA1
e1c226a9ac881dba9ad35986fdcbe1b4f24d2974

SHA256
3dbc4a82c92919b44111760dc1e77c63a04ed967e22020b4e1f59ea74bd9ddbb

SHA512
98118b8e186f33708c92d3cd7353f209cc00aa2c8925005947860fa0b1337f8e5b13a4eb7edb36d32c3bdce1322273ab01fffc92340e66931df6993e258a9ff1

Download Submit
memory/1196-25-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1196-24-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1196-22-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1196-20-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1196-17-0x0000000000680000-0x0000000000695000-memory.dmp

Filesize
84KB

Download
memory/1968-15-0x0000000002E70000-0x0000000002F70000-memory.dmp

Filesize
1024KB

Download
memory/1968-16-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/1968-21-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3620-12-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3620-1-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

Filesize
1024KB

Download
memory/3620-8-0x0000000002D50000-0x0000000002D63000-memory.dmp

Filesize
76KB

Download
memory/3620-6-0x0000000002DA0000-0x0000000002EA0000-memory.dmp

Filesize
1024KB

Download
memory/3620-4-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3620-3-0x0000000000400000-0x0000000002CB9000-memory.dmp

Filesize
40.7MB

Download
memory/3620-2-0x0000000002D50000-0x0000000002D63000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads