tofsee | 6d11a016ff70b46205d7ef21efb3fa132b878580a77ed923566257751dd7a11d

Analysis

max time kernel
162s
max time network
173s
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, 12:44

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General

Target
f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe
Size 13.5MB
Sample240417-pylesahb3y
SHA256 6d11a016ff70b46205d7ef21efb3fa132b878580a77ed923566257751dd7a11d
MD5 f5cbfe63e02723b835516647584848d4
SHA1 07dd6af989d6d11f4efcf5a9594912d851b10135
SHA512 a5143335125344278d49a9eb6be29bbd8fb05aa84d00e01e5e05b2bee4243a8d45c2f469cb46f5e04af70679511b6a1ebc3ea261894dca3bb0fa0a498321b91f
SSDEEP 6144:x2BxZXDssssssssssssssssssssssssssssssssssssssssssssssssssssssssk:x4V
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

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

pid	Process
4652	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\dncctyrz\ImagePath = "C:\\Windows\\SysWOW64\\dncctyrz\\lqddgfva.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-1-5-21-1230272463-3683322193-511842230-1000\Control Panel\International\Geo\Nation	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1460	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4960	lqddgfva.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4960 set thread context of 1460	4960	lqddgfva.exe	112

Launches sc.exe 3 IoCs

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

pid	Process
4704	sc.exe
3488	sc.exe
4168	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 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	97
PID 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	97
PID 4280 wrote to memory of 4340	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	97
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	99
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	99
PID 4280 wrote to memory of 1504	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	99
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	101
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	101
PID 4280 wrote to memory of 4168	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	101
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	103
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	103
PID 4280 wrote to memory of 4704	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	103
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	105
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	105
PID 4280 wrote to memory of 3488	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	105
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	107
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	107
PID 4280 wrote to memory of 4652	4280	f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe	107
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	112
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	112
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	112
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	112
PID 4960 wrote to memory of 1460	4960	lqddgfva.exe	112

C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4280
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\dncctyrz\
  2⤵
  PID:4340
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\lqddgfva.exe" C:\Windows\SysWOW64\dncctyrz\
  2⤵
  PID:1504
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create dncctyrz binPath= "C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe /d\"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4168
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description dncctyrz "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4704
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start dncctyrz
  2⤵
  - Launches sc.exe
  PID:3488
- 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:4652

C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe
C:\Windows\SysWOW64\dncctyrz\lqddgfva.exe /d"C:\Users\Admin\AppData\Local\Temp\f5cbfe63e02723b835516647584848d4_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4960
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1460

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

lqddgfva.exe

Path C:\Users\Admin\AppData\Local\Temp\lqddgfva.exe
Size 12.4MB
SHA256 6360049af317cba1e25d38da7913c805a69a4a24bebe4e3b45a0fc44289f9cd9
MD5 a8b80f81ce5ee1703b6cbc91c1680167
SHA1 2e64d8b70d12e258da5f1062cd6d12a6c4c677a9
SHA512 778b2137216aa60340a441e80fc57ccb3fa4050dffcc40a12ddebb93533d186b6eb30bba12a84f3641758cf2d6f430997250e7ba27721ada059c6172cea10575
SSDEEP 6144:S2BxZXDssssssssssssssssssssssssssssssssssssssssssssssssssssssssX:S4V
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1460-11-0x00000000003A0000-0x00000000003B5000-memory.dmp

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memory/1460-15-0x00000000003A0000-0x00000000003B5000-memory.dmp

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memory/1460-18-0x00000000003A0000-0x00000000003B5000-memory.dmp

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memory/1460-17-0x00000000003A0000-0x00000000003B5000-memory.dmp

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memory/1460-16-0x00000000003A0000-0x00000000003B5000-memory.dmp

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memory/4280-6-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4280-1-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4280-2-0x0000000000580000-0x0000000000581000-memory.dmp

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memory/4280-5-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4280-0-0x0000000000570000-0x0000000000571000-memory.dmp

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memory/4960-8-0x0000000000540000-0x0000000000541000-memory.dmp

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memory/4960-10-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4960-12-0x0000000000400000-0x000000000041F000-memory.dmp

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memory/4960-9-0x0000000000400000-0x000000000041F000-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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