tofsee | 4a1faed551556efe2e1e3e4f1c333f78adeb905ebffc84e4575da1da95f2a3ad

General

Target

c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe
Size

10.5MB
MD5

c09354355fb07d6facea3c22adda2229
SHA1

73720603323de6932680de01f1ca5f71db192281
SHA256

4a1faed551556efe2e1e3e4f1c333f78adeb905ebffc84e4575da1da95f2a3ad
SHA512

cedcec999ca8c1d81733a5ecf1edeaa68a2a20fe124373a22276beb376148e4fa34be8ea5c52f13ffce0a45f44129a10d271a471084ba2b3f8ebbf422500782e
SSDEEP

6144:mrZQVnJzxj5nP76vk7wQ6udJm1lzvGCUWlnpj:iZ2zxj5nPmRQ6QgjzOCnl

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

defeatwax.ru

refabyd.info

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee
Creates new service(s) 2 TTPs
persistence execution

Windows Service
T1543.003

Service Execution
T1569.002

Modifies Windows Firewall 2 TTPs 1 IoCs

evasion

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

pid	Process
2632	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\uzkcjhim\ImagePath = "C:\\Windows\\SysWOW64\\uzkcjhim\\sqayyoxn.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-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3564	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1788	sqayyoxn.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1788 set thread context of 3564	1788	sqayyoxn.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
3880	sc.exe
1976	sc.exe
1280	sc.exe

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

System Information Discovery
T1082

Event Triggered Execution: Netsh Helper DLL 1 TTPs 3 IoCs

Netsh.exe (also referred to as Netshell) is a command-line scripting utility used to interact with the network configuration of a system.

persistence privilege_escalation

Netsh Helper DLL

T1546.007

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

pid	pid_target	Process	procid_target
2868	3076	WerFault.exe	81
4492	1788	WerFault.exe	92

System Location Discovery: System Language Discovery 1 TTPs 9 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sqayyoxn.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 3076 wrote to memory of 652	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	82
PID 3076 wrote to memory of 652	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	82
PID 3076 wrote to memory of 652	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	82
PID 3076 wrote to memory of 2332	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	84
PID 3076 wrote to memory of 2332	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	84
PID 3076 wrote to memory of 2332	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	84
PID 3076 wrote to memory of 3880	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	86
PID 3076 wrote to memory of 3880	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	86
PID 3076 wrote to memory of 3880	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	86
PID 3076 wrote to memory of 1976	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	88
PID 3076 wrote to memory of 1976	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	88
PID 3076 wrote to memory of 1976	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	88
PID 3076 wrote to memory of 1280	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	90
PID 3076 wrote to memory of 1280	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	90
PID 3076 wrote to memory of 1280	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	90
PID 3076 wrote to memory of 2632	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	93
PID 3076 wrote to memory of 2632	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	93
PID 3076 wrote to memory of 2632	3076	c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe	93
PID 1788 wrote to memory of 3564	1788	sqayyoxn.exe	98
PID 1788 wrote to memory of 3564	1788	sqayyoxn.exe	98
PID 1788 wrote to memory of 3564	1788	sqayyoxn.exe	98
PID 1788 wrote to memory of 3564	1788	sqayyoxn.exe	98
PID 1788 wrote to memory of 3564	1788	sqayyoxn.exe	98

C:\Users\Admin\AppData\Local\Temp\c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3076
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\uzkcjhim\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\sqayyoxn.exe" C:\Windows\SysWOW64\uzkcjhim\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2332
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create uzkcjhim binPath= "C:\Windows\SysWOW64\uzkcjhim\sqayyoxn.exe /d\"C:\Users\Admin\AppData\Local\Temp\c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3880
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description uzkcjhim "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1976
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start uzkcjhim
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1280
- 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
  - Event Triggered Execution: Netsh Helper DLL
  - System Location Discovery: System Language Discovery
  PID:2632
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3076 -s 1176
  2⤵
  - Program crash
  PID:2868

C:\Windows\SysWOW64\uzkcjhim\sqayyoxn.exe
C:\Windows\SysWOW64\uzkcjhim\sqayyoxn.exe /d"C:\Users\Admin\AppData\Local\Temp\c09354355fb07d6facea3c22adda2229_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1788
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3564
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1788 -s 508
  2⤵
  - Program crash
  PID:4492

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 460 -p 3076 -ip 3076
1⤵
PID:640

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 1788 -ip 1788
1⤵
PID:5012

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

1

T1569

Service Execution

1

T1569.002

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

Event Triggered Execution

1

T1546

Netsh Helper DLL

1

T1546.007

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\sqayyoxn.exe

Filesize
13.6MB

MD5
01491fb8aadfc42ca846af7538d4ad64

SHA1
574b1c0104dfcdff8b44bb2743516fa7dd90c25d

SHA256
add8dee8343dfc3382c6bab042abc3d75eb3194b839fa90faa21ee33e48d21e6

SHA512
f53b155be8cce58fb83f27c937f5e2e2fcea4bfda1a0c84b7477a570a7bf4bc8ee81cb5ff9a8b7d3a4e901a4adb7092d85065108c9a16ad0f323b8043775f401

Download Submit
memory/1788-12-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1788-11-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/1788-18-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3076-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3076-2-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3076-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3076-9-0x0000000000490000-0x00000000004A3000-memory.dmp

Filesize
76KB

Download
memory/3076-8-0x0000000000400000-0x000000000044D000-memory.dmp

Filesize
308KB

Download
memory/3076-1-0x00000000005B0000-0x00000000006B0000-memory.dmp

Filesize
1024KB

Download
memory/3564-13-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download
memory/3564-15-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download
memory/3564-16-0x0000000001100000-0x0000000001115000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads