tofsee | 2f1e0eb9ed8589890be9756528e46acfc275a2bb5b797c370c6b95a9f6e8eb61

General

Target

85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe
Size

12.7MB
MD5

85c28ed504a9641d91449cc374bfdf3f
SHA1

32bf88471d0c2f15bb525fd71eb75c9fc484a998
SHA256

2f1e0eb9ed8589890be9756528e46acfc275a2bb5b797c370c6b95a9f6e8eb61
SHA512

3c23870ce8685421a8f82a4eed8e9309aa649a364750ecdc0bb2607584b00de0e9cefff1db9f67a8d19f7e09c2e9d32b47d0d5c7cabe758a29c3f35d8dd968ec
SSDEEP

6144:evk9RADRUv1CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCn:HRAD

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.7

lazystax.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

Processes:

netsh.exe

pid process

968 netsh.exe

pid	process
968	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\bhymyah\ImagePath = "C:\\Windows\\SysWOW64\\bhymyah\\bbagrfmp.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:

85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3227495264-2217614367-4027411560-1000\Control Panel\International\Geo\Nation	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1952 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bbagrfmp.exe

pid process

5056 bbagrfmp.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bbagrfmp.exe

description pid process target process

PID 5056 set thread context of 1952 5056 bbagrfmp.exe svchost.exe
Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2952 sc.exe
4012 sc.exe
3636 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1952	svchost.exe

pid	process
5056	bbagrfmp.exe

description	pid	process	target process
PID 5056 set thread context of 1952	5056	bbagrfmp.exe	svchost.exe

pid	process
2952	sc.exe
4012	sc.exe
3636	sc.exe

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 value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

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:

cmd.execmd.exesc.exebbagrfmp.exe85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exesc.exesc.exenetsh.exesvchost.exe

description	ioc	process
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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	bbagrfmp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.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

Processes:

85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exebbagrfmp.exe

description	pid	process	target process
PID 316 wrote to memory of 996	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 996	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 996	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 764	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 764	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 764	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	cmd.exe
PID 316 wrote to memory of 2952	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 2952	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 2952	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 4012	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 4012	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 4012	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 3636	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 3636	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 3636	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	sc.exe
PID 316 wrote to memory of 968	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	netsh.exe
PID 316 wrote to memory of 968	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	netsh.exe
PID 316 wrote to memory of 968	316	85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe	netsh.exe
PID 5056 wrote to memory of 1952	5056	bbagrfmp.exe	svchost.exe
PID 5056 wrote to memory of 1952	5056	bbagrfmp.exe	svchost.exe
PID 5056 wrote to memory of 1952	5056	bbagrfmp.exe	svchost.exe
PID 5056 wrote to memory of 1952	5056	bbagrfmp.exe	svchost.exe
PID 5056 wrote to memory of 1952	5056	bbagrfmp.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:316
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\bhymyah\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:996
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bbagrfmp.exe" C:\Windows\SysWOW64\bhymyah\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:764
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create bhymyah binPath= "C:\Windows\SysWOW64\bhymyah\bbagrfmp.exe /d\"C:\Users\Admin\AppData\Local\Temp\85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2952
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description bhymyah "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:4012
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start bhymyah
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3636
- 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:968

C:\Windows\SysWOW64\bhymyah\bbagrfmp.exe
C:\Windows\SysWOW64\bhymyah\bbagrfmp.exe /d"C:\Users\Admin\AppData\Local\Temp\85c28ed504a9641d91449cc374bfdf3f_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5056
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1952

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\bbagrfmp.exe

Filesize
11.5MB

MD5
672479619c024e6827d3a319e4a6f772

SHA1
ed0029f2bf204f6e45068a1cdd0bfa9d15298de4

SHA256
90757699890fdfe16ecb663f0ae794425ea584b5307177ce16e1fbf2384e9244

SHA512
dd68397d3e9018bf34f9b08e2f0f15df90de3e3e317b24b27a8bcb34e3799882c20eb20e51f1a687edb0e2ab4a3e49a871ecb9a7932d8d4d56090a9064250fec

Download Submit
memory/316-0-0x00000000009B0000-0x00000000009B1000-memory.dmp

Filesize
4KB

Download
memory/316-1-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/316-2-0x00000000009C0000-0x00000000009C1000-memory.dmp

Filesize
4KB

Download
memory/316-11-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/1952-8-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1952-12-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1952-14-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1952-15-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/1952-16-0x0000000000370000-0x0000000000385000-memory.dmp

Filesize
84KB

Download
memory/5056-6-0x0000000000940000-0x0000000000941000-memory.dmp

Filesize
4KB

Download
memory/5056-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads