tofsee | 5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b

General

Target

JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe
Size

238KB
MD5

7b1c6a6a156ceda7be1606583bc126a5
SHA1

466c9e967bcf87509615e0dd98f2c007ee886fa4
SHA256

5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b
SHA512

f13f2ff68613cf952492f7b1c561fe27d9f8ebaacd863930c2b0ab235900c5280abdcdbce4348e4e2c96de055d7532e69a94712e0e7fbcc7885a34ab1f1cf5da
SSDEEP

3072:v7ojA4DTPiryxGZEftEZp2I3/qQW7NbVggjcGkNIVqI7sxkgaBChMpZa9uD6VdyV:aA4DTPirDWlEV/cf7ITsq7igavwVf

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

quadoil.ru

lakeflex.ru

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
1488	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\oomgwrqf\ImagePath = "C:\\Windows\\SysWOW64\\oomgwrqf\\ydndrw.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-1-5-21-3756129449-3121373848-4276368241-1000\Control Panel\International\Geo\Nation	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe

Deletes itself 1 IoCs

pid	Process
3120	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
220	ydndrw.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 220 set thread context of 3120	220	ydndrw.exe	98

Launches sc.exe 3 IoCs

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

pid	Process
1952	sc.exe
656	sc.exe
3212	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
428	556	WerFault.exe	81
1548	220	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	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	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ydndrw.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	sc.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 556 wrote to memory of 4212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	82
PID 556 wrote to memory of 4212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	82
PID 556 wrote to memory of 4212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	82
PID 556 wrote to memory of 4604	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	84
PID 556 wrote to memory of 4604	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	84
PID 556 wrote to memory of 4604	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	84
PID 556 wrote to memory of 1952	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	86
PID 556 wrote to memory of 1952	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	86
PID 556 wrote to memory of 1952	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	86
PID 556 wrote to memory of 656	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	88
PID 556 wrote to memory of 656	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	88
PID 556 wrote to memory of 656	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	88
PID 556 wrote to memory of 3212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	90
PID 556 wrote to memory of 3212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	90
PID 556 wrote to memory of 3212	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	90
PID 556 wrote to memory of 1488	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	93
PID 556 wrote to memory of 1488	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	93
PID 556 wrote to memory of 1488	556	JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe	93
PID 220 wrote to memory of 3120	220	ydndrw.exe	98
PID 220 wrote to memory of 3120	220	ydndrw.exe	98
PID 220 wrote to memory of 3120	220	ydndrw.exe	98
PID 220 wrote to memory of 3120	220	ydndrw.exe	98
PID 220 wrote to memory of 3120	220	ydndrw.exe	98

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\oomgwrqf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ydndrw.exe" C:\Windows\SysWOW64\oomgwrqf\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4604
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create oomgwrqf binPath= "C:\Windows\SysWOW64\oomgwrqf\ydndrw.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description oomgwrqf "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:656
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start oomgwrqf
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3212
- 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:1488
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 652
  2⤵
  - Program crash
  PID:428

C:\Windows\SysWOW64\oomgwrqf\ydndrw.exe
C:\Windows\SysWOW64\oomgwrqf\ydndrw.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_5411354e943b9ac88a828a6769497307dd7bf67954c878eef8027f34afe0443b.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:220
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3120
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 220 -s 512
  2⤵
  - Program crash
  PID:1548

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 556 -ip 556
1⤵
PID:4248

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 220 -ip 220
1⤵
PID:4040

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\ydndrw.exe

Filesize
11.1MB

MD5
e8aabc1cee0b98d7baeaf33040d9e729

SHA1
1e17ec0cc07093f57a587e82ae75471874c045d9

SHA256
e80a528fdec763c2e917c2e2cbe9a14842ad5e76bab7322fe1109f390dbaa541

SHA512
cd0715bb9cf177af0c906a0e190fcd0757531cd1e4cc88bfcc61cb5c303bdd85144766172d5bd6207392c3836a0185c2ef45f3b3000c03773b736d8e249d74e4

Download Submit
memory/220-6-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/220-18-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/220-8-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/220-7-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/556-14-0x00000000005A0000-0x00000000005AD000-memory.dmp

Filesize
52KB

Download
memory/556-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/556-16-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/556-15-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/556-1-0x00000000005B0000-0x00000000005C3000-memory.dmp

Filesize
76KB

Download
memory/556-0-0x00000000005A0000-0x00000000005AD000-memory.dmp

Filesize
52KB

Download
memory/556-13-0x0000000000400000-0x0000000000445000-memory.dmp

Filesize
276KB

Download
memory/3120-12-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/3120-9-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/3120-19-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/3120-20-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download
memory/3120-21-0x0000000000E60000-0x0000000000E75000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads