tofsee | 97d0ba8f894b85f3f70a6178237202b905ee26b085419fef0710a06f2b715e07

General

Target

f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe
Size

12.5MB
MD5

f57318e139826014dbcc8f0eaad35e40
SHA1

39d26c2ffbb92c2f5b443ae094a84b1bf760aea2
SHA256

97d0ba8f894b85f3f70a6178237202b905ee26b085419fef0710a06f2b715e07
SHA512

e0a9568659e0ebd2a64b4c4e1fb070e2c4b946ec10a63b301221b5b9528c532da9ea90f535a8037e514faf210649a214bca001d3e4b45f1ac5dd09640a345b4c
SSDEEP

49152:g8yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyye:g

Score

10^/10

tofsee evasion persistence trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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
4996	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\lbemzbyj\ImagePath = "C:\\Windows\\SysWOW64\\lbemzbyj\\noqrlojb.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-1-5-21-553605503-2331009851-2137262461-1000\Control Panel\International\Geo\Nation	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
1312	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
4016	noqrlojb.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 4016 set thread context of 1312	4016	noqrlojb.exe	104

Launches sc.exe 3 IoCs

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

pid	Process
4496	sc.exe
4208	sc.exe
4652	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
1920	4728	WerFault.exe	83
4100	4016	WerFault.exe	99

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4728 wrote to memory of 1844	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	89
PID 4728 wrote to memory of 1844	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	89
PID 4728 wrote to memory of 1844	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	89
PID 4728 wrote to memory of 5036	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	91
PID 4728 wrote to memory of 5036	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	91
PID 4728 wrote to memory of 5036	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	91
PID 4728 wrote to memory of 4496	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	93
PID 4728 wrote to memory of 4496	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	93
PID 4728 wrote to memory of 4496	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	93
PID 4728 wrote to memory of 4208	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	95
PID 4728 wrote to memory of 4208	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	95
PID 4728 wrote to memory of 4208	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	95
PID 4728 wrote to memory of 4652	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	97
PID 4728 wrote to memory of 4652	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	97
PID 4728 wrote to memory of 4652	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	97
PID 4728 wrote to memory of 4996	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	100
PID 4728 wrote to memory of 4996	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	100
PID 4728 wrote to memory of 4996	4728	f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe	100
PID 4016 wrote to memory of 1312	4016	noqrlojb.exe	104
PID 4016 wrote to memory of 1312	4016	noqrlojb.exe	104
PID 4016 wrote to memory of 1312	4016	noqrlojb.exe	104
PID 4016 wrote to memory of 1312	4016	noqrlojb.exe	104
PID 4016 wrote to memory of 1312	4016	noqrlojb.exe	104

C:\Users\Admin\AppData\Local\Temp\f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4728
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\lbemzbyj\
  2⤵
  PID:1844
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\noqrlojb.exe" C:\Windows\SysWOW64\lbemzbyj\
  2⤵
  PID:5036
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create lbemzbyj binPath= "C:\Windows\SysWOW64\lbemzbyj\noqrlojb.exe /d\"C:\Users\Admin\AppData\Local\Temp\f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  PID:4496
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description lbemzbyj "wifi internet conection"
  2⤵
  - Launches sc.exe
  PID:4208
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start lbemzbyj
  2⤵
  - Launches sc.exe
  PID:4652
- 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:4996
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4728 -s 1232
  2⤵
  - Program crash
  PID:1920

C:\Windows\SysWOW64\lbemzbyj\noqrlojb.exe
C:\Windows\SysWOW64\lbemzbyj\noqrlojb.exe /d"C:\Users\Admin\AppData\Local\Temp\f57318e139826014dbcc8f0eaad35e40_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:4016
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  PID:1312
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4016 -s 508
  2⤵
  - Program crash
  PID:4100

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 4728 -ip 4728
1⤵
PID:4712

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 476 -p 4016 -ip 4016
1⤵
PID:980

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\noqrlojb.exe

Filesize
13.9MB

MD5
f29de2ea714f8f11b291e2666c24e85d

SHA1
6f8231b3ec8bd72b84291d2a2369226002528345

SHA256
1370f14abb9a82f47780c0e7cc2a74fdc983182f2f22bb9abde073d189437cba

SHA512
c8870ca6474fd3904a5b27323897b63a06d1b79adeef85b19e4f305fdc1c0fcd6a82723dc6b3fed035f3b67d6c80b9735aea34d1dd1dbb5f41860458f5ecf541

Download Submit
memory/1312-11-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/1312-16-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/1312-18-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/1312-19-0x00000000009D0000-0x00000000009E5000-memory.dmp

Filesize
84KB

Download
memory/4016-12-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4016-10-0x0000000000A90000-0x0000000000B90000-memory.dmp

Filesize
1024KB

Download
memory/4016-17-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4728-4-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4728-2-0x0000000000B50000-0x0000000000B63000-memory.dmp

Filesize
76KB

Download
memory/4728-7-0x0000000000400000-0x00000000008E9000-memory.dmp

Filesize
4.9MB

Download
memory/4728-8-0x0000000000B50000-0x0000000000B63000-memory.dmp

Filesize
76KB

Download
memory/4728-1-0x0000000000C30000-0x0000000000D30000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads