tofsee | e95dc31697c70aeaa6ce846868058f3d47a94ed236b2ea45028f4c1e71ff9009

General

Target

b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe
Size

11.8MB
MD5

b44f56e69a2fecb2aa2c087de04041a8
SHA1

c4277bc1cd4b2f6218659949a9749ffb3b8ac590
SHA256

e95dc31697c70aeaa6ce846868058f3d47a94ed236b2ea45028f4c1e71ff9009
SHA512

71d04ebaad7f507907fa5958c6bc369b4cf02bfc7ee892a6a2ad89e67eafe432bbf60c589dee657ed29b6fa4afdb72fc577f7ad11548647443c04a1ad5f0cd13
SSDEEP

6144:IesoFeYHECHsLsx6mihb12P5qpWV0m68jM7LjmpeM:Inu/HECz6S5QWlnqOpe

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
3124	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\qchewthn\ImagePath = "C:\\Windows\\SysWOW64\\qchewthn\\rpeqkgrh.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-1-5-21-940901362-3608833189-1915618603-1000\Control Panel\International\Geo\Nation	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
2428	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3836	rpeqkgrh.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 3836 set thread context of 2428	3836	rpeqkgrh.exe	101

Launches sc.exe 3 IoCs

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

pid	Process
3872	sc.exe
1448	sc.exe
3864	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
4284	748	WerFault.exe	82
5096	3836	WerFault.exe	94

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	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.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	rpeqkgrh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 748 wrote to memory of 1336	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	83
PID 748 wrote to memory of 1336	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	83
PID 748 wrote to memory of 1336	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	83
PID 748 wrote to memory of 3548	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	85
PID 748 wrote to memory of 3548	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	85
PID 748 wrote to memory of 3548	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	85
PID 748 wrote to memory of 3872	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	87
PID 748 wrote to memory of 3872	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	87
PID 748 wrote to memory of 3872	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	87
PID 748 wrote to memory of 1448	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	90
PID 748 wrote to memory of 1448	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	90
PID 748 wrote to memory of 1448	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	90
PID 748 wrote to memory of 3864	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	92
PID 748 wrote to memory of 3864	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	92
PID 748 wrote to memory of 3864	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	92
PID 748 wrote to memory of 3124	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	95
PID 748 wrote to memory of 3124	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	95
PID 748 wrote to memory of 3124	748	b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe	95
PID 3836 wrote to memory of 2428	3836	rpeqkgrh.exe	101
PID 3836 wrote to memory of 2428	3836	rpeqkgrh.exe	101
PID 3836 wrote to memory of 2428	3836	rpeqkgrh.exe	101
PID 3836 wrote to memory of 2428	3836	rpeqkgrh.exe	101
PID 3836 wrote to memory of 2428	3836	rpeqkgrh.exe	101

C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:748
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qchewthn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1336
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rpeqkgrh.exe" C:\Windows\SysWOW64\qchewthn\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3548
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qchewthn binPath= "C:\Windows\SysWOW64\qchewthn\rpeqkgrh.exe /d\"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3872
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qchewthn "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qchewthn
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3864
- 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:3124
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 748 -s 1264
  2⤵
  - Program crash
  PID:4284

C:\Windows\SysWOW64\qchewthn\rpeqkgrh.exe
C:\Windows\SysWOW64\qchewthn\rpeqkgrh.exe /d"C:\Users\Admin\AppData\Local\Temp\b44f56e69a2fecb2aa2c087de04041a8_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3836
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2428
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3836 -s 512
  2⤵
  - Program crash
  PID:5096

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 748 -ip 748
1⤵
PID:3300

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3836 -ip 3836
1⤵
PID:3044

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\rpeqkgrh.exe

Filesize
10.8MB

MD5
5262b111926361a114d916fe4f74d45b

SHA1
b3d358cf7752a8364d4a97a5b86829019e800420

SHA256
21e6e5614b771d6dd9a0d18d77e6a4fbb39d8f9c9f9124f68290c390cf0fc741

SHA512
11937b8a94ec2f92d53a45313bd8456f0c6a2c233f9249d50dcac7913b34db7eb6d6d0eb345b19e47d0de74ab2f36d3753331b866dd911770a3ca0bb0746d4e2

Download Submit
memory/748-8-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/748-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/748-1-0x0000000000B80000-0x0000000000C80000-memory.dmp

Filesize
1024KB

Download
memory/748-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/748-9-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/748-2-0x00000000001C0000-0x00000000001D3000-memory.dmp

Filesize
76KB

Download
memory/2428-12-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/2428-14-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/2428-17-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/3836-11-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3836-15-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download
memory/3836-16-0x0000000000400000-0x000000000086B000-memory.dmp

Filesize
4.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads