tofsee | 5ca5ccd924b945c085e70b8af94809345d979169dd31b198e60705374987eeaf

General

Target

184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe
Size

10.9MB
MD5

184d8deaa51d84c10e00a9dc7b28a40d
SHA1

8646698b578a72a3c4bbc601bd7af3341f2f89c1
SHA256

5ca5ccd924b945c085e70b8af94809345d979169dd31b198e60705374987eeaf
SHA512

37881a88a0aff5f3737a9f3cdf7594279a1cabb51db5b338b3c9fa61ad5b953ba2708ac0200c2f1cb3ab8c62760c59b6646637ccf9cff3d63babc84d1dca8517
SSDEEP

24576:lPTYeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeu:lP

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
2580	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\itoynuwa\ImagePath = "C:\\Windows\\SysWOW64\\itoynuwa\\ecrdxteu.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-1-5-21-523280732-2327480845-3730041215-1000\Control Panel\International\Geo\Nation	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe

Deletes itself 1 IoCs

pid	Process
3516	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2596	ecrdxteu.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2596 set thread context of 3516	2596	ecrdxteu.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
2380	sc.exe
1604	sc.exe
232	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
3960	1828	WerFault.exe	81
1236	2596	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	ecrdxteu.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	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1828 wrote to memory of 4152	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	82
PID 1828 wrote to memory of 4152	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	82
PID 1828 wrote to memory of 4152	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	82
PID 1828 wrote to memory of 2684	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	84
PID 1828 wrote to memory of 2684	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	84
PID 1828 wrote to memory of 2684	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	84
PID 1828 wrote to memory of 232	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	86
PID 1828 wrote to memory of 232	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	86
PID 1828 wrote to memory of 232	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	86
PID 1828 wrote to memory of 2380	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	88
PID 1828 wrote to memory of 2380	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	88
PID 1828 wrote to memory of 2380	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	88
PID 1828 wrote to memory of 1604	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	90
PID 1828 wrote to memory of 1604	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	90
PID 1828 wrote to memory of 1604	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	90
PID 1828 wrote to memory of 2580	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	93
PID 1828 wrote to memory of 2580	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	93
PID 1828 wrote to memory of 2580	1828	184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe	93
PID 2596 wrote to memory of 3516	2596	ecrdxteu.exe	98
PID 2596 wrote to memory of 3516	2596	ecrdxteu.exe	98
PID 2596 wrote to memory of 3516	2596	ecrdxteu.exe	98
PID 2596 wrote to memory of 3516	2596	ecrdxteu.exe	98
PID 2596 wrote to memory of 3516	2596	ecrdxteu.exe	98

C:\Users\Admin\AppData\Local\Temp\184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1828
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\itoynuwa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4152
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ecrdxteu.exe" C:\Windows\SysWOW64\itoynuwa\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2684
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create itoynuwa binPath= "C:\Windows\SysWOW64\itoynuwa\ecrdxteu.exe /d\"C:\Users\Admin\AppData\Local\Temp\184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:232
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description itoynuwa "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2380
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start itoynuwa
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1604
- 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:2580
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 1828 -s 1028
  2⤵
  - Program crash
  PID:3960

C:\Windows\SysWOW64\itoynuwa\ecrdxteu.exe
C:\Windows\SysWOW64\itoynuwa\ecrdxteu.exe /d"C:\Users\Admin\AppData\Local\Temp\184d8deaa51d84c10e00a9dc7b28a40d_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2596
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3516
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2596 -s 512
  2⤵
  - Program crash
  PID:1236

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 428 -p 1828 -ip 1828
1⤵
PID:216

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 432 -p 2596 -ip 2596
1⤵
PID:3728

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\ecrdxteu.exe

Filesize
11.9MB

MD5
ca78599edbdb0d087cdee6d0c3d778f1

SHA1
0506874274c405be6570a090786cf1760fc80be3

SHA256
4ccc3390e03dab89809e30924271506e8fc8a04dffba15f6a872fd0f09151911

SHA512
cdc2af0f299dfc9b5e9aab8159b6284c118ee4e71b122a9d5b78189daade45675f27b74b6ed5194d4c2a8df82f44181c5b29aac8f660b02d4f52714bd2075164

Download Submit
memory/1828-8-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/1828-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1828-2-0x0000000000660000-0x0000000000673000-memory.dmp

Filesize
76KB

Download
memory/1828-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1828-9-0x0000000000660000-0x0000000000673000-memory.dmp

Filesize
76KB

Download
memory/1828-1-0x00000000004F0000-0x00000000005F0000-memory.dmp

Filesize
1024KB

Download
memory/2596-11-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2596-12-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/2596-17-0x0000000000400000-0x00000000004B0000-memory.dmp

Filesize
704KB

Download
memory/3516-13-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/3516-15-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download
memory/3516-18-0x0000000000770000-0x0000000000785000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads