tofsee | cda2e2bc07f9772d45f63b77f0b0d1754b8a10fa1420b68afb10a8b71f9b8e50

Analysis

max time kernel
150s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240412-en
resource tags

arch:x64arch:x86image:win10v2004-20240412-enlocale:en-usos:windows10-2004-x64system
submitted
19/04/2024, 14:18

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe
Size 12.0MB
Sample240419-rl82esee32
SHA256 cda2e2bc07f9772d45f63b77f0b0d1754b8a10fa1420b68afb10a8b71f9b8e50
MD5 fa7c6161052a1f948ae77285e7bf45ed
SHA1 366b0ba9f8fb650ff2b6e69b288037c4d2d12118
SHA512 66c062616dd3df436c4829ad48771b782c688066dcee9c73446d1e326efe13d4da7a253a01b8904bfd6b2fc08a782b607b843542a91175df5ec68e9b51df9ae8
SSDEEP 196608:4Lad4qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqn:4L
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
3684	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\jekektce\ImagePath = "C:\\Windows\\SysWOW64\\jekektce\\omwuuktj.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	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4056	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
928	omwuuktj.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 928 set thread context of 4056	928	omwuuktj.exe	106

Launches sc.exe 3 IoCs

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

pid	Process
3720	sc.exe
3180	sc.exe
4016	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

pid	pid_target	Process	procid_target
1684	4644	WerFault.exe	84
208	928	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4644 wrote to memory of 5068	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	88
PID 4644 wrote to memory of 5068	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	88
PID 4644 wrote to memory of 5068	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	88
PID 4644 wrote to memory of 4132	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	90
PID 4644 wrote to memory of 4132	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	90
PID 4644 wrote to memory of 4132	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	90
PID 4644 wrote to memory of 3180	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	93
PID 4644 wrote to memory of 3180	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	93
PID 4644 wrote to memory of 3180	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	93
PID 4644 wrote to memory of 4016	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	95
PID 4644 wrote to memory of 4016	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	95
PID 4644 wrote to memory of 4016	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	95
PID 4644 wrote to memory of 3720	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	97
PID 4644 wrote to memory of 3720	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	97
PID 4644 wrote to memory of 3720	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	97
PID 4644 wrote to memory of 3684	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	101
PID 4644 wrote to memory of 3684	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	101
PID 4644 wrote to memory of 3684	4644	fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe	101
PID 928 wrote to memory of 4056	928	omwuuktj.exe	106
PID 928 wrote to memory of 4056	928	omwuuktj.exe	106
PID 928 wrote to memory of 4056	928	omwuuktj.exe	106
PID 928 wrote to memory of 4056	928	omwuuktj.exe	106
PID 928 wrote to memory of 4056	928	omwuuktj.exe	106

C:\Users\Admin\AppData\Local\Temp\fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4644
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\jekektce\
  2⤵
  PID:5068
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\omwuuktj.exe" C:\Windows\SysWOW64\jekektce\
  2⤵
  PID:4132
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create jekektce binPath= "C:\Windows\SysWOW64\jekektce\omwuuktj.exe /d\"C:\Users\Admin\AppData\Local\Temp\fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:3180
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description jekektce "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4016
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start jekektce
  2⤵
  - Launches sc.exe
  PID:3720
- 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:3684
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4644 -s 792
  2⤵
  - Program crash
  PID:1684

C:\Windows\SysWOW64\jekektce\omwuuktj.exe
C:\Windows\SysWOW64\jekektce\omwuuktj.exe /d"C:\Users\Admin\AppData\Local\Temp\fa7c6161052a1f948ae77285e7bf45ed_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:928
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:4056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 928 -s 512
  2⤵
  - Program crash
  PID:208

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 4644 -ip 4644
1⤵
PID:5064

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 928 -ip 928
1⤵
PID:4744

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

Replay Monitor

Loading Replay Monitor...

Downloads

omwuuktj.exe

Path C:\Users\Admin\AppData\Local\Temp\omwuuktj.exe
Size 10.7MB
SHA256 2ff5db1944744587788429fe8f92d6fb7aed350c352037b7a5109574ed443e43
MD5 1c4baeddca53c85e1e9d73088a2832e8
SHA1 4a2f3d39ff70ab3030b1f11172ebc26d1b4b77e3
SHA512 0d88c5b0b0728acc6a11aec1a772b9fa2d92a8d2b04330d63c19c7284567a0eea38a97352ebfeca19eff3ecb6a02e24a3ffec3288ad42ab8a75a83682586b373
SSDEEP 196608:JLad4qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq6:JL
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/928-10-0x0000000000970000-0x0000000000A70000-memory.dmp

Download

memory/928-11-0x0000000000400000-0x0000000000871000-memory.dmp

Download

memory/928-17-0x0000000000400000-0x0000000000871000-memory.dmp

Download

memory/4056-12-0x00000000001E0000-0x00000000001F5000-memory.dmp

Download

memory/4056-15-0x00000000001E0000-0x00000000001F5000-memory.dmp

Download

memory/4056-16-0x00000000001E0000-0x00000000001F5000-memory.dmp

Download

memory/4056-18-0x00000000001E0000-0x00000000001F5000-memory.dmp

Download

memory/4644-4-0x0000000000400000-0x0000000000871000-memory.dmp

Download

memory/4644-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Download

memory/4644-8-0x0000000000400000-0x0000000000871000-memory.dmp

Download

memory/4644-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Download

memory/4644-1-0x0000000000920000-0x0000000000A20000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads