tofsee | f3d4d7d949b580549377e738825b62201df2989728aa0e772397e6be1be5cb31

General

Target

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
Size

13.0MB
MD5

152a60c00cbfc41bd421e898e0ee7737
SHA1

78f3cb1db0829bfd6fdc1e6dabfc1abd52d4dd64
SHA256

f3d4d7d949b580549377e738825b62201df2989728aa0e772397e6be1be5cb31
SHA512

67f767bec4534f94d5774cfa9a80465d9902e344a89aeba24ce6a6d69a682d5283f180d3ea1d2e45c2b758be82920ae99dbbaf1bd6598ff87f6df6da5be38bd9
SSDEEP

49152:jRBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBr:

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

43.231.4.6

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

840 netsh.exe

pid	process
840	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\choxiwq\ImagePath = "C:\\Windows\\SysWOW64\\choxiwq\\yepashbn.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:

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2170637797-568393320-3232933035-1000\Control Panel\International\Geo\Nation	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

1624 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

yepashbn.exe

pid process

4440 yepashbn.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

yepashbn.exe

description pid process target process

PID 4440 set thread context of 1624 4440 yepashbn.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

2388 sc.exe
5028 sc.exe
3696 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
1624	svchost.exe

pid	process
4440	yepashbn.exe

description	pid	process	target process
PID 4440 set thread context of 1624	4440	yepashbn.exe	svchost.exe

pid	process
2388	sc.exe
5028	sc.exe
3696	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 queried	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key value enumerated	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe
Key opened	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\NetSh	netsh.exe

Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3964 3936 WerFault.exe 152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
4824 4440 WerFault.exe yepashbn.exe

pid	pid_target	process	target process
3964	3936	WerFault.exe	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
4824	4440	WerFault.exe	yepashbn.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:

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.execmd.exesc.exesc.exenetsh.exeyepashbn.exesvchost.execmd.exesc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.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	yepashbn.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

Processes:

152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exeyepashbn.exe

description	pid	process	target process
PID 3936 wrote to memory of 1212	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 1212	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 1212	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 1840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 1840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 1840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	cmd.exe
PID 3936 wrote to memory of 2388	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 2388	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 2388	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 5028	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 5028	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 5028	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 3696	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 3696	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 3696	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	sc.exe
PID 3936 wrote to memory of 840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 3936 wrote to memory of 840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 3936 wrote to memory of 840	3936	152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe	netsh.exe
PID 4440 wrote to memory of 1624	4440	yepashbn.exe	svchost.exe
PID 4440 wrote to memory of 1624	4440	yepashbn.exe	svchost.exe
PID 4440 wrote to memory of 1624	4440	yepashbn.exe	svchost.exe
PID 4440 wrote to memory of 1624	4440	yepashbn.exe	svchost.exe
PID 4440 wrote to memory of 1624	4440	yepashbn.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3936
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\choxiwq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1212
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\yepashbn.exe" C:\Windows\SysWOW64\choxiwq\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:1840
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create choxiwq binPath= "C:\Windows\SysWOW64\choxiwq\yepashbn.exe /d\"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2388
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description choxiwq "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:5028
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start choxiwq
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:3696
- 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:840
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3936 -s 1040
  2⤵
  - Program crash
  PID:3964

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=4324,i,8293235976513689021,7261015831736501466,262144 --variations-seed-version --mojo-platform-channel-handle=4336 /prefetch:8
1⤵
PID:324

C:\Windows\SysWOW64\choxiwq\yepashbn.exe
C:\Windows\SysWOW64\choxiwq\yepashbn.exe /d"C:\Users\Admin\AppData\Local\Temp\152a60c00cbfc41bd421e898e0ee7737_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4440
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1624
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4440 -s 556
  2⤵
  - Program crash
  PID:4824

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3936 -ip 3936
1⤵
PID:1304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 4440 -ip 4440
1⤵
PID:2448

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\yepashbn.exe

Filesize
12.4MB

MD5
de90c3fb650976822c517fd995174138

SHA1
400707225c12656fd39f5d99ad3df077ed09ef8c

SHA256
a6ec118d1785cc4a28c7756ae940d49bfa9bbbe56afe392dd21b68cee74de185

SHA512
0ce666d910ca9a55fdee9d0050aad5eaf9facf4a398e55508f5050421418ed555f9b667c236033bce209e6ab1d6c96ccef2da459ca73ae916c527244fe50222c

Download Submit
memory/1624-11-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/1624-13-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/1624-14-0x0000000001050000-0x0000000001065000-memory.dmp

Filesize
84KB

Download
memory/3936-1-0x0000000000F50000-0x0000000001050000-memory.dmp

Filesize
1024KB

Download
memory/3936-2-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/3936-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3936-8-0x0000000002960000-0x0000000002973000-memory.dmp

Filesize
76KB

Download
memory/3936-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/3936-7-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download
memory/4440-15-0x0000000000400000-0x0000000000C0A000-memory.dmp

Filesize
8.0MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads