tofsee | 8fe70009e9cac4931dc7e7a917595aea57040f72de25583aa001179d6ddc8c8f

General

Target

1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe
Size

14.9MB
MD5

1b6636c24173b800533d1f4b41b9b36c
SHA1

6bca80a3cbc4a085f1137955794ee6c9b41e88b7
SHA256

8fe70009e9cac4931dc7e7a917595aea57040f72de25583aa001179d6ddc8c8f
SHA512

6c15d24080fcdd50757812ea72fbd67dad34849f052da6f72a7ed019428b7cadb576db14acb058ba1620c1d78f7c6eb6ece886a7d2660e7a988b9539f1d4ece0
SSDEEP

6144:Cvk9RADRUv1CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCn:TRAD

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
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

3864 netsh.exe

pid	process
3864	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\nsydphbm\ImagePath = "C:\\Windows\\SysWOW64\\nsydphbm\\feuqxty.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:

1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3208 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

feuqxty.exe

pid process

4452 feuqxty.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

feuqxty.exe

description pid process target process

PID 4452 set thread context of 3208 4452 feuqxty.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

1888 sc.exe
1840 sc.exe
2388 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
3208	svchost.exe

pid	process
4452	feuqxty.exe

description	pid	process	target process
PID 4452 set thread context of 3208	4452	feuqxty.exe	svchost.exe

pid	process
1888	sc.exe
1840	sc.exe
2388	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 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

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.exenetsh.exe1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.execmd.execmd.exesc.exesc.exefeuqxty.exesvchost.exe

description	ioc	process
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	1b6636c24173b800533d1f4b41b9b36c_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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	feuqxty.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exefeuqxty.exe

description	pid	process	target process
PID 3476 wrote to memory of 3488	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 3488	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 3488	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 3008	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 3008	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 3008	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	cmd.exe
PID 3476 wrote to memory of 1888	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 1888	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 1888	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 1840	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 1840	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 1840	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 2388	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 2388	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 3476 wrote to memory of 2388	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	sc.exe
PID 4452 wrote to memory of 3208	4452	feuqxty.exe	svchost.exe
PID 4452 wrote to memory of 3208	4452	feuqxty.exe	svchost.exe
PID 4452 wrote to memory of 3208	4452	feuqxty.exe	svchost.exe
PID 4452 wrote to memory of 3208	4452	feuqxty.exe	svchost.exe
PID 4452 wrote to memory of 3208	4452	feuqxty.exe	svchost.exe
PID 3476 wrote to memory of 3864	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe
PID 3476 wrote to memory of 3864	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe
PID 3476 wrote to memory of 3864	3476	1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3476
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\nsydphbm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3488
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\feuqxty.exe" C:\Windows\SysWOW64\nsydphbm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3008
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create nsydphbm binPath= "C:\Windows\SysWOW64\nsydphbm\feuqxty.exe /d\"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1888
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description nsydphbm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start nsydphbm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- 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:3864

C:\Windows\SysWOW64\nsydphbm\feuqxty.exe
C:\Windows\SysWOW64\nsydphbm\feuqxty.exe /d"C:\Users\Admin\AppData\Local\Temp\1b6636c24173b800533d1f4b41b9b36c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4452
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:3208

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4112,i,9445584274764997943,12714240264001792460,262144 --variations-seed-version --mojo-platform-channel-handle=4060 /prefetch:8
1⤵
PID:2172

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\feuqxty.exe

Filesize
11.4MB

MD5
46d8111ae1ea58170fafa9710d4cfce2

SHA1
201bf8d8a637cb6420c573280154ab1748af7db6

SHA256
69ef3b97bf7f8f93c71d2f0fa6e6cb0f39415f2815490378f3075c486cff6280

SHA512
08347e8a1c0efb8dc1a41d37e40aa825e48edc64ab03e68eaefb75005357e8a9982bbb641986e6c9254d16e84ef9dbcfc1219d62a921328da8c5b0e9ed1fc07c

Download Submit
memory/3208-12-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3208-9-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3208-15-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3208-16-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3208-17-0x00000000012E0000-0x00000000012F5000-memory.dmp

Filesize
84KB

Download
memory/3476-2-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/3476-1-0x0000000000500000-0x0000000000501000-memory.dmp

Filesize
4KB

Download
memory/3476-0-0x00000000004F0000-0x00000000004F1000-memory.dmp

Filesize
4KB

Download
memory/3476-14-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/4452-6-0x0000000000950000-0x0000000000951000-memory.dmp

Filesize
4KB

Download
memory/4452-8-0x0000000000960000-0x0000000000961000-memory.dmp

Filesize
4KB

Download
memory/4452-13-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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