tofsee | 1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f

Analysis

max time kernel
145s
max time network
147s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
24-12-2024 15:08

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General

Target

JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe
Size

277KB
MD5

886521f6b302733ec56fa74e9eee797c
SHA1

426770987d11b12e6b9709a7064a143e39a2adbc
SHA256

1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f
SHA512

a267361d9f84755a8346a303c3ea7f65ee6b7a721c124fe12ba67531509d3ad2d9c3cf6f35fc0b29922f619e8f4a96895c29305c91894a476023fb508a5a01d9
SSDEEP

3072:Hdh4rj43qHj/zjgRYR6lVatBLufQxMmYq7sxkgaBCh:f4rj46/zjgRI2atBLTMYQiga

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

niflheimr.cn

jotunheim.name

Signatures

Tofsee
Backdoor/botnet which carries out malicious activities based on commands from a C2 server.
trojan tofsee
Tofsee family
tofsee

Windows security bypass 2 TTPs 1 IoCs

evasion trojan

Disable or Modify Tools

T1562.001

Modify Registry

T1112

description	ioc	Process
Set value (int)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows Defender\Exclusions\Paths\C:\Windows\SysWOW64\xzduovbp = "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

pid	Process
2820	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\xzduovbp\ImagePath = "C:\\Windows\\SysWOW64\\xzduovbp\\rfebhanl.exe"	svchost.exe

Deletes itself 1 IoCs

pid	Process
2208	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
2732	rfebhanl.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2732 set thread context of 2208	2732	rfebhanl.exe	43

Launches sc.exe 3 IoCs

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

pid	Process
2680	sc.exe
2832	sc.exe
2228	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 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

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	sc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rfebhanl.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.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

Suspicious use of WriteProcessMemory 30 IoCs

description	pid	Process	procid_target
PID 2652 wrote to memory of 2788	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	30
PID 2652 wrote to memory of 2788	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	30
PID 2652 wrote to memory of 2788	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	30
PID 2652 wrote to memory of 2788	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	30
PID 2652 wrote to memory of 2136	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	32
PID 2652 wrote to memory of 2136	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	32
PID 2652 wrote to memory of 2136	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	32
PID 2652 wrote to memory of 2136	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	32
PID 2652 wrote to memory of 2680	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	34
PID 2652 wrote to memory of 2680	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	34
PID 2652 wrote to memory of 2680	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	34
PID 2652 wrote to memory of 2680	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	34
PID 2652 wrote to memory of 2832	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	36
PID 2652 wrote to memory of 2832	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	36
PID 2652 wrote to memory of 2832	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	36
PID 2652 wrote to memory of 2832	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	36
PID 2652 wrote to memory of 2228	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	38
PID 2652 wrote to memory of 2228	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	38
PID 2652 wrote to memory of 2228	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	38
PID 2652 wrote to memory of 2228	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	38
PID 2652 wrote to memory of 2820	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	41
PID 2652 wrote to memory of 2820	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	41
PID 2652 wrote to memory of 2820	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	41
PID 2652 wrote to memory of 2820	2652	JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe	41
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43
PID 2732 wrote to memory of 2208	2732	rfebhanl.exe	43

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2652
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\xzduovbp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2788
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\rfebhanl.exe" C:\Windows\SysWOW64\xzduovbp\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2136
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create xzduovbp binPath= "C:\Windows\SysWOW64\xzduovbp\rfebhanl.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2680
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description xzduovbp "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2832
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start xzduovbp
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2228
- 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:2820

C:\Windows\SysWOW64\xzduovbp\rfebhanl.exe
C:\Windows\SysWOW64\xzduovbp\rfebhanl.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_1de61f619fa0533fb1b90d506d18b80b49d738264d2d96822c8600a696a2546f.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2732
- 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:2208

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

System Services

T1569

Service Execution

T1569.002

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Create or Modify System Process

T1543

Windows Service

T1543.003

Event Triggered Execution

T1546

Netsh Helper DLL

T1546.007

Defense Evasion

Impair Defenses

T1562

Disable or Modify System Firewall

T1562.004

Disable or Modify Tools

T1562.001

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
11.6MB

MD5
0020f08e98e18dca32b14697d2c39138

SHA1
963a5f76feb21da79eae117ccd22d589d358ef32

SHA256
aa9ecaf8c54e367738348239cca9fabb847fa62c74c38c44c76b5654b9ae3913

SHA512
ee3130662c3f0f2e1a0460de4c8f34cbbf2ba1be7273db9d2aa67ea07f605070a5ea9f31279daaea68c238269facccf8f230e91bc8c215653c0a2e71ba5eaef4

Download Submit
memory/2208-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-16-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-13-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2208-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2208-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2652-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2652-2-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2652-9-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2652-8-0x0000000000220000-0x0000000000233000-memory.dmp

Filesize
76KB

Download
memory/2652-7-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download
memory/2652-1-0x0000000000680000-0x0000000000780000-memory.dmp

Filesize
1024KB

Download
memory/2732-17-0x0000000000400000-0x00000000004D9000-memory.dmp

Filesize
868KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads