tofsee | d34f204c379a0efa108374e436319aa5910bf896d8ee1cb4bdc4032df5e147eb

General

Target

af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe
Size

15.0MB
MD5

af8b6df755cc465a0ccb5772c272d50d
SHA1

66c47d68fa9e0134ac65b36c72a3c440adb89cba
SHA256

d34f204c379a0efa108374e436319aa5910bf896d8ee1cb4bdc4032df5e147eb
SHA512

ebf2da3cfb78bddaff3cc5f578c45f4c9d57fbedd85618034d9700ffeb1e35971bb5a26fdca34f2da5eac5b382314f6fb8fe92ef9af40b19f4e20d8c3bc7cbf7
SSDEEP

12288:rUR4+0lGrUPDHQahTzrdCcrFy55555555555555555555555555555555555555p:rl+PrmrXrd1p

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
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
932	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\qqbrbhye\ImagePath = "C:\\Windows\\SysWOW64\\qqbrbhye\\seqyyjyg.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-1-5-21-2718105630-359604950-2820636825-1000\Control Panel\International\Geo\Nation	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
4484	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
1384	seqyyjyg.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1384 set thread context of 4484	1384	seqyyjyg.exe	107

Launches sc.exe 3 IoCs

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

pid	Process
4732	sc.exe
3340	sc.exe
3160	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
4028	4756	WerFault.exe	85
3972	1384	WerFault.exe	99

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	svchost.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	af8b6df755cc465a0ccb5772c272d50d_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	seqyyjyg.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 4756 wrote to memory of 4108	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	89
PID 4756 wrote to memory of 4108	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	89
PID 4756 wrote to memory of 4108	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	89
PID 4756 wrote to memory of 4152	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	91
PID 4756 wrote to memory of 4152	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	91
PID 4756 wrote to memory of 4152	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	91
PID 4756 wrote to memory of 4732	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	93
PID 4756 wrote to memory of 4732	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	93
PID 4756 wrote to memory of 4732	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	93
PID 4756 wrote to memory of 3340	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	95
PID 4756 wrote to memory of 3340	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	95
PID 4756 wrote to memory of 3340	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	95
PID 4756 wrote to memory of 3160	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	97
PID 4756 wrote to memory of 3160	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	97
PID 4756 wrote to memory of 3160	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	97
PID 4756 wrote to memory of 932	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	102
PID 4756 wrote to memory of 932	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	102
PID 4756 wrote to memory of 932	4756	af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe	102
PID 1384 wrote to memory of 4484	1384	seqyyjyg.exe	107
PID 1384 wrote to memory of 4484	1384	seqyyjyg.exe	107
PID 1384 wrote to memory of 4484	1384	seqyyjyg.exe	107
PID 1384 wrote to memory of 4484	1384	seqyyjyg.exe	107
PID 1384 wrote to memory of 4484	1384	seqyyjyg.exe	107

C:\Users\Admin\AppData\Local\Temp\af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4756
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\qqbrbhye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4108
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\seqyyjyg.exe" C:\Windows\SysWOW64\qqbrbhye\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4152
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create qqbrbhye binPath= "C:\Windows\SysWOW64\qqbrbhye\seqyyjyg.exe /d\"C:\Users\Admin\AppData\Local\Temp\af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4732
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description qqbrbhye "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3340
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start qqbrbhye
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3160
- 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:932
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4756 -s 1176
  2⤵
  - Program crash
  PID:4028

C:\Windows\SysWOW64\qqbrbhye\seqyyjyg.exe
C:\Windows\SysWOW64\qqbrbhye\seqyyjyg.exe /d"C:\Users\Admin\AppData\Local\Temp\af8b6df755cc465a0ccb5772c272d50d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1384
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:4484
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1384 -s 512
  2⤵
  - Program crash
  PID:3972

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 4756 -ip 4756
1⤵
PID:4960

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 560 -p 1384 -ip 1384
1⤵
PID:2448

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\seqyyjyg.exe

Filesize
14.3MB

MD5
764e8e6bf42e655bc124400faa679584

SHA1
0da5abab9edc35ee418397f69e5762737c290358

SHA256
30abc757d5cadeb92b59c5078dbb0a6248ef1f21b3647fd351fcc1113056dbbf

SHA512
5423613407a81e9186ac600da1f1660996b67f145789deb51b0c7928bef996b6419f2a7c13a4982eff71010233fa9323ddacf415437b3ca570bb37652a410413

Download Submit
memory/1384-11-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1384-18-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/1384-12-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4484-13-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4484-15-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4484-16-0x0000000001290000-0x00000000012A5000-memory.dmp

Filesize
84KB

Download
memory/4756-9-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4756-8-0x0000000000400000-0x0000000000454000-memory.dmp

Filesize
336KB

Download
memory/4756-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4756-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/4756-2-0x0000000000570000-0x0000000000583000-memory.dmp

Filesize
76KB

Download
memory/4756-1-0x00000000006F0000-0x00000000007F0000-memory.dmp

Filesize
1024KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads