tofsee | ece3c96e6d9ff76cda55ebb17804eb5cb0a3928fca63f720cf2b51f94272717b

General

Target

a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe
Size

13.5MB
MD5

a9cc0300922517f9e2a23a8906a0f608
SHA1

bf14eeff59d959a745c06d43aa372e7b9fe9edaf
SHA256

ece3c96e6d9ff76cda55ebb17804eb5cb0a3928fca63f720cf2b51f94272717b
SHA512

fb952776ac12916c9e2cdd92d70d0c11c467e5fe3693be001c6b715b8c17a21df4631ebd84f108adaed0980efe55bdc971048e540fa1871fe820a97512b157b4
SSDEEP

12288:Kj8IJUh3rNPQTN2/bMBrow6NGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGGq:KDJqrFb0on

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

Processes:

netsh.exe

pid	Process
3584	netsh.exe

Sets service image path in registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\igpiyeeh\ImagePath = "C:\\Windows\\SysWOW64\\igpiyeeh\\nhdjuewc.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

Processes:

a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-3442511616-637977696-3186306149-1000\Control Panel\International\Geo\Nation	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid	Process
1924	svchost.exe

Executes dropped EXE 1 IoCs

Processes:

nhdjuewc.exe

pid	Process
2572	nhdjuewc.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

nhdjuewc.exe

description	pid	Process	procid_target
PID 2572 set thread context of 1924	2572	nhdjuewc.exe	102

Launches sc.exe 3 IoCs

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

Processes:

sc.exesc.exesc.exe

pid	Process
448	sc.exe
3756	sc.exe
1208	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

Processes:

netsh.exe

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

Processes:

WerFault.exeWerFault.exe

pid	pid_target	Process	procid_target
2072	3292	WerFault.exe	81
4848	2572	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

Processes:

sc.exesc.exenetsh.exenhdjuewc.exesvchost.exea9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.execmd.execmd.exesc.exe

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	nhdjuewc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.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

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exenhdjuewc.exe

description	pid	Process	procid_target
PID 3292 wrote to memory of 2944	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	82
PID 3292 wrote to memory of 2944	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	82
PID 3292 wrote to memory of 2944	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	82
PID 3292 wrote to memory of 4692	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	84
PID 3292 wrote to memory of 4692	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	84
PID 3292 wrote to memory of 4692	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	84
PID 3292 wrote to memory of 448	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	86
PID 3292 wrote to memory of 448	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	86
PID 3292 wrote to memory of 448	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	86
PID 3292 wrote to memory of 3756	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	88
PID 3292 wrote to memory of 3756	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	88
PID 3292 wrote to memory of 3756	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	88
PID 3292 wrote to memory of 1208	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	92
PID 3292 wrote to memory of 1208	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	92
PID 3292 wrote to memory of 1208	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	92
PID 3292 wrote to memory of 3584	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	95
PID 3292 wrote to memory of 3584	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	95
PID 3292 wrote to memory of 3584	3292	a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe	95
PID 2572 wrote to memory of 1924	2572	nhdjuewc.exe	102
PID 2572 wrote to memory of 1924	2572	nhdjuewc.exe	102
PID 2572 wrote to memory of 1924	2572	nhdjuewc.exe	102
PID 2572 wrote to memory of 1924	2572	nhdjuewc.exe	102
PID 2572 wrote to memory of 1924	2572	nhdjuewc.exe	102

C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3292
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\igpiyeeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2944
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\nhdjuewc.exe" C:\Windows\SysWOW64\igpiyeeh\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4692
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create igpiyeeh binPath= "C:\Windows\SysWOW64\igpiyeeh\nhdjuewc.exe /d\"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:448
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description igpiyeeh "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3756
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start igpiyeeh
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1208
- 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:3584
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3292 -s 748
  2⤵
  - Program crash
  PID:2072

C:\Windows\SysWOW64\igpiyeeh\nhdjuewc.exe
C:\Windows\SysWOW64\igpiyeeh\nhdjuewc.exe /d"C:\Users\Admin\AppData\Local\Temp\a9cc0300922517f9e2a23a8906a0f608_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2572
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1924
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2572 -s 512
  2⤵
  - Program crash
  PID:4848

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 3292 -ip 3292
1⤵
PID:212

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2572 -ip 2572
1⤵
PID:1192

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\nhdjuewc.exe

Filesize
12.3MB

MD5
1b39cec4fa8b1f78dc41f2c4470adb80

SHA1
87c9732cf0f5f320e0d3061b87d503e097bef526

SHA256
c97f8d78f4938d069b1be757b71d6e12d186bec57f5e4eb3aa22c49b9a36e510

SHA512
b432d1e1a632b52f64962607b9b071cad6c2145002e68f57227d21fd3c48455d265a77c2174499ab78883f3b8535749619de120197d6e090221ff02812f364b8

Download Submit
memory/1924-14-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/1924-17-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/1924-16-0x0000000000720000-0x0000000000735000-memory.dmp

Filesize
84KB

Download
memory/2572-13-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2572-11-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2572-12-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/2572-19-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3292-9-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download
memory/3292-8-0x0000000000400000-0x0000000000455000-memory.dmp

Filesize
340KB

Download
memory/3292-10-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-1-0x0000000000650000-0x0000000000750000-memory.dmp

Filesize
1024KB

Download
memory/3292-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3292-2-0x0000000000590000-0x00000000005A3000-memory.dmp

Filesize
76KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads