tofsee | fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef

General

Target

JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe
Size

285KB
MD5

9ae18937bee35e429d3cf973cc2c66bc
SHA1

a2c8feadc6ef096d7de3d3ba138409e8cd4631eb
SHA256

fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef
SHA512

e34fd5eafa5c742729dffdbe401d5d10b5231fb90a2038c7a7f856e87a82f832e4c1bf67be2ae7af86d679c2fce6b786622b8ec088f990b759e6b16b6194fbd1
SSDEEP

6144:yKFbjOROKji302CSXuzbgwu6L7ITsqSigaTwVf:FbjOROMYRxXunnn7s

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
1192	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\rpxnrern\ImagePath = "C:\\Windows\\SysWOW64\\rpxnrern\\mbghbjmf.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_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe

Deletes itself 1 IoCs

pid	Process
3436	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
920	mbghbjmf.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 920 set thread context of 3436	920	mbghbjmf.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
3192	sc.exe
1452	sc.exe
1428	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
4084	2520	WerFault.exe	83
1624	920	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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	mbghbjmf.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.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

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2520 wrote to memory of 2352	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	84
PID 2520 wrote to memory of 2352	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	84
PID 2520 wrote to memory of 2352	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	84
PID 2520 wrote to memory of 3356	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	86
PID 2520 wrote to memory of 3356	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	86
PID 2520 wrote to memory of 3356	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	86
PID 2520 wrote to memory of 3192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	88
PID 2520 wrote to memory of 3192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	88
PID 2520 wrote to memory of 3192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	88
PID 2520 wrote to memory of 1452	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	90
PID 2520 wrote to memory of 1452	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	90
PID 2520 wrote to memory of 1452	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	90
PID 2520 wrote to memory of 1428	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	92
PID 2520 wrote to memory of 1428	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	92
PID 2520 wrote to memory of 1428	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	92
PID 2520 wrote to memory of 1192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	95
PID 2520 wrote to memory of 1192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	95
PID 2520 wrote to memory of 1192	2520	JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe	95
PID 920 wrote to memory of 3436	920	mbghbjmf.exe	99
PID 920 wrote to memory of 3436	920	mbghbjmf.exe	99
PID 920 wrote to memory of 3436	920	mbghbjmf.exe	99
PID 920 wrote to memory of 3436	920	mbghbjmf.exe	99
PID 920 wrote to memory of 3436	920	mbghbjmf.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2520
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\rpxnrern\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2352
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\mbghbjmf.exe" C:\Windows\SysWOW64\rpxnrern\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3356
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create rpxnrern binPath= "C:\Windows\SysWOW64\rpxnrern\mbghbjmf.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3192
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description rpxnrern "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1452
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start rpxnrern
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1428
- 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:1192
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2520 -s 1036
  2⤵
  - Program crash
  PID:4084

C:\Windows\SysWOW64\rpxnrern\mbghbjmf.exe
C:\Windows\SysWOW64\rpxnrern\mbghbjmf.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_fe8eab1915f8ab5c7b8de91e09fae88b4c98626c317e7d61d6acb116fe29efef.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:920
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3436
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 920 -s 512
  2⤵
  - Program crash
  PID:1624

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 448 -p 2520 -ip 2520
1⤵
PID:1612

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 492 -p 920 -ip 920
1⤵
PID:3712

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\mbghbjmf.exe

Filesize
12.9MB

MD5
934c202cefc641c3e4864471a1b76f9f

SHA1
ac35500c5417d0185cd8ca1e2e5b179a30b5f63e

SHA256
cc0547a1b3cf850254954b74b9bcb4409904d85369e621fc388ec8b8bb3d7ec1

SHA512
3ad24090ccd282d18272631aa1e367099ac7a8c5d66fc0a3f71eb0c8ded8792af9c36fe640ba79e3626364883ff14af0e96b3e5e6aa9f1cbd98c8721baca6bb9

Download Submit
memory/920-8-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/920-7-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/920-16-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/920-6-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2520-14-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-0-0x0000000000700000-0x000000000070D000-memory.dmp

Filesize
52KB

Download
memory/2520-2-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2520-13-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/2520-12-0x0000000000700000-0x000000000070D000-memory.dmp

Filesize
52KB

Download
memory/2520-11-0x0000000000400000-0x0000000000451000-memory.dmp

Filesize
324KB

Download
memory/2520-1-0x0000000000710000-0x0000000000723000-memory.dmp

Filesize
76KB

Download
memory/3436-9-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/3436-17-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download
memory/3436-18-0x00000000003C0000-0x00000000003D5000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads