tofsee | c62d36cd6ae1a3563d49df5ab3fa5375d8781f3d5f60a90c0a2afdcae81454fa

Analysis

max time kernel
147s
max time network
142s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
17/04/2024, 23:52

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General

Target
f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe
Size 10.9MB
Sample240417-3wplbaac47
SHA256 c62d36cd6ae1a3563d49df5ab3fa5375d8781f3d5f60a90c0a2afdcae81454fa
MD5 f6d7c7a90429c7668bab5c0339e18e84
SHA1 ada7b42c5fb01651c4b9526974e953ac8e908508
SHA512 31e176c0847df5920eca0834ebd7cf47d5e52547f8add92398318cee17e93b74c2ebbd0b222c0586f7f008b8508c9f788141b45875af81230659507496483620
SSDEEP 24576:djCj10HSqGgeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeen:d/D
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

pid	Process
1632	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\eolutxrt\ImagePath = "C:\\Windows\\SysWOW64\\eolutxrt\\wjajboqk.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-259785868-298165991-4178590326-1000\Control Panel\International\Geo\Nation	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

pid	Process
116	wjajboqk.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 116 set thread context of 4736	116	wjajboqk.exe	103

Launches sc.exe 3 IoCs

Sc.exe is a Windows utlilty to control services on the system.

pid	Process
4068	sc.exe
3464	sc.exe
3232	sc.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 1764	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	88
PID 1704 wrote to memory of 1764	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	88
PID 1704 wrote to memory of 1764	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	88
PID 1704 wrote to memory of 4408	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	90
PID 1704 wrote to memory of 4408	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	90
PID 1704 wrote to memory of 4408	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	90
PID 1704 wrote to memory of 4068	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	92
PID 1704 wrote to memory of 4068	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	92
PID 1704 wrote to memory of 4068	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	92
PID 1704 wrote to memory of 3464	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	95
PID 1704 wrote to memory of 3464	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	95
PID 1704 wrote to memory of 3464	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	95
PID 1704 wrote to memory of 3232	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	98
PID 1704 wrote to memory of 3232	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	98
PID 1704 wrote to memory of 3232	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	98
PID 1704 wrote to memory of 1632	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	101
PID 1704 wrote to memory of 1632	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	101
PID 1704 wrote to memory of 1632	1704	f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe	101
PID 116 wrote to memory of 4736	116	wjajboqk.exe	103
PID 116 wrote to memory of 4736	116	wjajboqk.exe	103
PID 116 wrote to memory of 4736	116	wjajboqk.exe	103
PID 116 wrote to memory of 4736	116	wjajboqk.exe	103
PID 116 wrote to memory of 4736	116	wjajboqk.exe	103

C:\Users\Admin\AppData\Local\Temp\f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\eolutxrt\
  2⤵
  PID:1764
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\wjajboqk.exe" C:\Windows\SysWOW64\eolutxrt\
  2⤵
  PID:4408
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create eolutxrt binPath= "C:\Windows\SysWOW64\eolutxrt\wjajboqk.exe /d\"C:\Users\Admin\AppData\Local\Temp\f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4068
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description eolutxrt "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:3464
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start eolutxrt
  2⤵
  - Launches sc.exe
  PID:3232
- 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:1632

C:\Windows\SysWOW64\eolutxrt\wjajboqk.exe
C:\Windows\SysWOW64\eolutxrt\wjajboqk.exe /d"C:\Users\Admin\AppData\Local\Temp\f6d7c7a90429c7668bab5c0339e18e84_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:116
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  PID:4736

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

wjajboqk.exe

Path C:\Users\Admin\AppData\Local\Temp\wjajboqk.exe
Size 10.5MB
SHA256 c0249a27be3f1b3031ddd40657f5c22b45977388454577489d4917e18cfa4353
MD5 382332c0cbbed8ca202b2d2fd83957b8
SHA1 179b0a61c9dd9b1d8827b623bf2767a9c43e63ea
SHA512 251def2f2eab0b8b30ad1be114d58a430fdba4e45177cae10373589c124f29797efd0ff82026b8a6ebf185fae7b119e8217e1f225a5eab75b667281c94ff1c4b
SSDEEP 24576:+jCj10HSqGgeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeO:+/D
MD5 SHA1 SHA512 SSDEEP

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memory/116-10-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/116-17-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/116-22-0x00000000005C0000-0x00000000005D3000-memory.dmp

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memory/116-8-0x0000000000660000-0x0000000000760000-memory.dmp

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memory/1704-14-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1704-1-0x0000000000690000-0x0000000000790000-memory.dmp

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memory/1704-3-0x0000000000400000-0x000000000046E000-memory.dmp

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memory/1704-2-0x0000000002070000-0x0000000002083000-memory.dmp

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memory/1704-23-0x0000000000690000-0x0000000000790000-memory.dmp

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memory/4736-13-0x0000000000850000-0x0000000000865000-memory.dmp

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memory/4736-15-0x0000000000850000-0x0000000000865000-memory.dmp

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memory/4736-16-0x0000000000850000-0x0000000000865000-memory.dmp

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memory/4736-9-0x0000000000850000-0x0000000000865000-memory.dmp

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memory/4736-25-0x0000000000850000-0x0000000000865000-memory.dmp

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Analysis

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General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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