tofsee | e982349cdd6908329e1c5163572103361fce17904dcbf5a820ca057553ebb74c

General

Target

ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe
Size

13.6MB
MD5

ffbb54a4781fbcedc8cf2838defba14c
SHA1

33b8f837b0439ee56351cda361d8dcafa40e6574
SHA256

e982349cdd6908329e1c5163572103361fce17904dcbf5a820ca057553ebb74c
SHA512

f59e3cc49c0d630a89f37cacce2b4ea326ca99db1e0e299dee131db365512554d4d0361ea19ee5fc1637b5cf5df9462097929f78d6e4f6c355161372dd31fcb2
SSDEEP

98304:8jhd88888888888888888888888888888888888888888888888888888888888/:8

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

176.111.174.19

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

1712 netsh.exe

pid	process
1712	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\egddkvd\ImagePath = "C:\\Windows\\SysWOW64\\egddkvd\\szjprnsr.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:

ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2564 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

szjprnsr.exe

pid process

900 szjprnsr.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

szjprnsr.exe

description pid process target process

PID 900 set thread context of 2564 900 szjprnsr.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

2204 sc.exe
2748 sc.exe
1260 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

3792 4764 WerFault.exe ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe
4084 900 WerFault.exe szjprnsr.exe

pid	process
2564	svchost.exe

pid	process
900	szjprnsr.exe

description	pid	process	target process
PID 900 set thread context of 2564	900	szjprnsr.exe	svchost.exe

pid	process
2204	sc.exe
2748	sc.exe
1260	sc.exe

pid	pid_target	process	target process
3792	4764	WerFault.exe	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe
4084	900	WerFault.exe	szjprnsr.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exeszjprnsr.exe

description	pid	process	target process
PID 4764 wrote to memory of 3916	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 3916	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 3916	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 1820	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 1820	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 1820	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	cmd.exe
PID 4764 wrote to memory of 2204	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 2204	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 2204	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 2748	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 2748	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 2748	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 1260	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 1260	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 1260	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	sc.exe
PID 4764 wrote to memory of 1712	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	netsh.exe
PID 4764 wrote to memory of 1712	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	netsh.exe
PID 4764 wrote to memory of 1712	4764	ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe	netsh.exe
PID 900 wrote to memory of 2564	900	szjprnsr.exe	svchost.exe
PID 900 wrote to memory of 2564	900	szjprnsr.exe	svchost.exe
PID 900 wrote to memory of 2564	900	szjprnsr.exe	svchost.exe
PID 900 wrote to memory of 2564	900	szjprnsr.exe	svchost.exe
PID 900 wrote to memory of 2564	900	szjprnsr.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4764

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\egddkvd\
2⤵
PID:3916

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\szjprnsr.exe" C:\Windows\SysWOW64\egddkvd\
2⤵
PID:1820

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create egddkvd binPath= "C:\Windows\SysWOW64\egddkvd\szjprnsr.exe /d\"C:\Users\Admin\AppData\Local\Temp\ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2204

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description egddkvd "wifi internet conection"
2⤵
- Launches sc.exe
PID:2748

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start egddkvd
2⤵
- Launches sc.exe
PID:1260

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:1712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 4764 -s 1184
2⤵
- Program crash
PID:3792

C:\Windows\SysWOW64\egddkvd\szjprnsr.exe
C:\Windows\SysWOW64\egddkvd\szjprnsr.exe /d"C:\Users\Admin\AppData\Local\Temp\ffbb54a4781fbcedc8cf2838defba14c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:900

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:2564

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 900 -s 516
2⤵
- Program crash
PID:4084

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 4764 -ip 4764
1⤵
PID:3848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 552 -p 900 -ip 900
1⤵
PID:4684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

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

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

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\szjprnsr.exe

Filesize
12.9MB

MD5
a8bc5491358c5c588882b241a2641ce3

SHA1
fb4427203e8684525cf8c96c5a89f842aa8b7c6e

SHA256
8ce067d84009d577bcf7f959670050237e0998319c2b5035663d71e5c9671714

SHA512
56a5398ec52b2e724fab3b8e0cc4afcc3e3b6a8f734494a5c8ba40cecf205c605820ad95ba55c59aebcc991b7addeb91a58a3932f42c5097f8acf7dec4c0e880

Download Submit
memory/900-10-0x0000000000730000-0x0000000000830000-memory.dmp

Filesize
1024KB

Download
memory/900-11-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/900-17-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/2564-12-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2564-15-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2564-16-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/2564-18-0x00000000004E0000-0x00000000004F5000-memory.dmp

Filesize
84KB

Download
memory/4764-4-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4764-2-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/4764-7-0x0000000000400000-0x000000000045D000-memory.dmp

Filesize
372KB

Download
memory/4764-8-0x0000000000700000-0x0000000000713000-memory.dmp

Filesize
76KB

Download
memory/4764-1-0x00000000007D0000-0x00000000008D0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads