tofsee | 90399b9745d09290d97eb0ed45d5e518e79a4e31f8133502317fa7ce3b456bfb

General

Target

f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe
Size

10.7MB
MD5

f8f54aaae74e0086b1fa46b5a84db05c
SHA1

6cf69b369b4d509cf28bba17f2d5c301d53cb234
SHA256

90399b9745d09290d97eb0ed45d5e518e79a4e31f8133502317fa7ce3b456bfb
SHA512

37d14cf05f1d0603469b4c3cecb4517ec38bf5d22da6eb743f6d832b92ae62637f9231a2f1e01cf999ba50e3a5d858b59958e5be30f7e4d7ce734ea7ac24d980
SSDEEP

6144:0POE0xjG9DJs6XBy+UP29MX6TERERERERERERERERERERERERERERERERERERERV:x1xS9RdUe9MX6

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan upx

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

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Processes:

svchost.exe

description	ioc	process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\xxnwfxe = "0"	svchost.exe

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

2512 netsh.exe

pid	process
2512	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\xxnwfxe\ImagePath = "C:\\Windows\\SysWOW64\\xxnwfxe\\tsgiwtum.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2664 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

tsgiwtum.exe

pid process

2896 tsgiwtum.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

tsgiwtum.exe

description pid process target process

PID 2896 set thread context of 2664 2896 tsgiwtum.exe svchost.exe

pid	process
2664	svchost.exe

pid	process
2896	tsgiwtum.exe

description	pid	process	target process
PID 2896 set thread context of 2664	2896	tsgiwtum.exe	svchost.exe

UPX packed file 2 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

Processes:

resource	yara_rule
behavioral1/memory/1392-1-0x0000000000400000-0x0000000004C5B000-memory.dmp	upx
C:\Users\Admin\AppData\Local\Temp\tsgiwtum.exe	upx

Launches sc.exe 3 IoCs
Sc.exe is a Windows utlilty to control services on the system.

Processes:

sc.exesc.exesc.exe

pid process

2652 sc.exe
2916 sc.exe
2832 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2652	sc.exe
2916	sc.exe
2832	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:

f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.execmd.exesvchost.execmd.exesc.exesc.exesc.exetsgiwtum.exenetsh.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.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
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	tsgiwtum.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exetsgiwtum.exe

description	pid	process	target process
PID 1392 wrote to memory of 2256	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2256	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2256	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2256	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2640	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2640	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2640	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2640	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	cmd.exe
PID 1392 wrote to memory of 2652	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2652	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2652	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2652	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2916	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2916	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2916	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2916	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2832	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2832	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2832	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 1392 wrote to memory of 2832	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	sc.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 2896 wrote to memory of 2664	2896	tsgiwtum.exe	svchost.exe
PID 1392 wrote to memory of 2512	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	netsh.exe
PID 1392 wrote to memory of 2512	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	netsh.exe
PID 1392 wrote to memory of 2512	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	netsh.exe
PID 1392 wrote to memory of 2512	1392	f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1392
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xxnwfxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2256
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\tsgiwtum.exe" C:\Windows\SysWOW64\xxnwfxe\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2640
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xxnwfxe binPath= "C:\Windows\SysWOW64\xxnwfxe\tsgiwtum.exe /d\"C:\Users\Admin\AppData\Local\Temp\f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2652
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xxnwfxe "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2916
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xxnwfxe
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- 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:2512

C:\Windows\SysWOW64\xxnwfxe\tsgiwtum.exe
C:\Windows\SysWOW64\xxnwfxe\tsgiwtum.exe /d"C:\Users\Admin\AppData\Local\Temp\f8f54aaae74e0086b1fa46b5a84db05c_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Windows security bypass
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:2664

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

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\tsgiwtum.exe

Filesize
13.3MB

MD5
79f39f1a464fa42bfaa5beee25245502

SHA1
077af48fb77cfce43e238b58986e5e1dd094d5ca

SHA256
6439bc7d490ab81ac0d89ae23a7ece06724a32b28bcf45838bf39556495d93a1

SHA512
8e5c5fbf21ac5113efa915e94f8b1503787c8b3d60a8a624d955285fa13d06bda13ae56d00e8c9ce034ecb486722f3c099ed865375ef03773b487ab0b53fdbc9

Download Submit
memory/1392-15-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/1392-2-0x0000000000230000-0x0000000000243000-memory.dmp

Filesize
76KB

Download
memory/1392-4-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/1392-14-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/1392-1-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download
memory/2664-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2664-7-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-10-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-16-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2664-17-0x00000000000D0000-0x00000000000E5000-memory.dmp

Filesize
84KB

Download
memory/2896-11-0x0000000000400000-0x0000000004C5B000-memory.dmp

Filesize
72.4MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads