tofsee | 33f705632625e6e1ead56838de42648696c964f1984578ce30998e008f854ebe

General

Target

f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe
Size

13.9MB
MD5

f75d6b1dffda8c5730718cab5dd19616
SHA1

f75b81e452246d015f51314b6bdb1a8eb67bbf9a
SHA256

33f705632625e6e1ead56838de42648696c964f1984578ce30998e008f854ebe
SHA512

3cb83f943d23e667fbcad24c8f754a4359bdccc31efb950d4a8e3b5fcb274935a93afc01fb59c33282a499d9e61e6dd04d68064e0f3c8f0b704e598535ce66e0
SSDEEP

6144:OJu3szifRNFyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyH:8uHf7

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

4776 netsh.exe

pid	process
4776	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\pjbuknto\ImagePath = "C:\\Windows\\SysWOW64\\pjbuknto\\oikhbxhm.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:

f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2177723727-746291240-1644359950-1000\Control Panel\International\Geo\Nation	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3868 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

oikhbxhm.exe

pid process

1452 oikhbxhm.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

oikhbxhm.exe

description pid process target process

PID 1452 set thread context of 3868 1452 oikhbxhm.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

1988 sc.exe
4976 sc.exe
5012 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3868	svchost.exe

pid	process
1452	oikhbxhm.exe

description	pid	process	target process
PID 1452 set thread context of 3868	1452	oikhbxhm.exe	svchost.exe

pid	process
1988	sc.exe
4976	sc.exe
5012	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exeoikhbxhm.exe

description	pid	process	target process
PID 2300 wrote to memory of 2360	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 2360	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 2360	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 2200	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 2200	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 2200	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	cmd.exe
PID 2300 wrote to memory of 4976	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 4976	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 4976	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 5012	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 5012	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 5012	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 1988	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 1988	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 2300 wrote to memory of 1988	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	sc.exe
PID 1452 wrote to memory of 3868	1452	oikhbxhm.exe	svchost.exe
PID 1452 wrote to memory of 3868	1452	oikhbxhm.exe	svchost.exe
PID 1452 wrote to memory of 3868	1452	oikhbxhm.exe	svchost.exe
PID 1452 wrote to memory of 3868	1452	oikhbxhm.exe	svchost.exe
PID 1452 wrote to memory of 3868	1452	oikhbxhm.exe	svchost.exe
PID 2300 wrote to memory of 4776	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	netsh.exe
PID 2300 wrote to memory of 4776	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	netsh.exe
PID 2300 wrote to memory of 4776	2300	f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2300

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\pjbuknto\
2⤵
PID:2360

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\oikhbxhm.exe" C:\Windows\SysWOW64\pjbuknto\
2⤵
PID:2200

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create pjbuknto binPath= "C:\Windows\SysWOW64\pjbuknto\oikhbxhm.exe /d\"C:\Users\Admin\AppData\Local\Temp\f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:4976

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description pjbuknto "wifi internet conection"
2⤵
- Launches sc.exe
PID:5012

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start pjbuknto
2⤵
- Launches sc.exe
PID:1988

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:4776

C:\Windows\SysWOW64\pjbuknto\oikhbxhm.exe
C:\Windows\SysWOW64\pjbuknto\oikhbxhm.exe /d"C:\Users\Admin\AppData\Local\Temp\f75d6b1dffda8c5730718cab5dd19616_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1452

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3868

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\oikhbxhm.exe
Filesize
13.6MB

MD5
8fafb6d9589deb0533fff50064639700

SHA1
590f65b76d3ad60d41c97b54ba95a35639f0bc51

SHA256
95569060726d1a62708ff3c0cf9b7e6b29bd20f51f469596aa1fba5537c7b255

SHA512
a4696265e75d9e905c24e85fc57b244b4d909d864de31598723f2f8599f021c966d3cc789ffe02ead7be06875a3a07eb61c22bfadfeb0c820f3f4b1bf564a2af

Download Submit
memory/1452-6-0x0000000000880000-0x0000000000881000-memory.dmp

Filesize
4KB

Download
memory/1452-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2300-0-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2300-1-0x0000000000530000-0x0000000000531000-memory.dmp

Filesize
4KB

Download
memory/2300-2-0x0000000000690000-0x0000000000691000-memory.dmp

Filesize
4KB

Download
memory/2300-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3868-8-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/3868-12-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/3868-14-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/3868-15-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/3868-16-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads