tofsee | 2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8

General

Target

JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe
Size

242KB
MD5

7b3d80fc9558e0087f546c82f87b3810
SHA1

794832d367e44686dc9488fd342d5f6959c730ab
SHA256

2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8
SHA512

0cd3a0f366e006476355a8a8e09d6558a894ed01b071717730cb921315caa1ac4a85bcff1c28f91d78d81b4b6e1be661eb17b25c83ec9e4fb0fc26b9dfa15e3f
SSDEEP

6144:RvD9GxJa8fWFe/3T808AnaTpzNjMlO5FeT:BD9ka8f+e/LhnaFzNjM+e

Score

10^/10

tofsee discovery evasion execution persistence privilege_escalation trojan

Malware Config

Extracted

Family

tofsee

C2

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
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
1852	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\wdwiumnm\ImagePath = "C:\\Windows\\SysWOW64\\wdwiumnm\\ajqekmpt.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe

Deletes itself 1 IoCs

pid	Process
1200	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
348	ajqekmpt.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 348 set thread context of 1200	348	ajqekmpt.exe	99

Launches sc.exe 3 IoCs

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

pid	Process
2252	sc.exe
228	sc.exe
1644	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 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

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3928	2908	WerFault.exe	83
4832	348	WerFault.exe	94

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	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.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	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	ajqekmpt.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	netsh.exe

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 2908 wrote to memory of 2836	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	84
PID 2908 wrote to memory of 2836	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	84
PID 2908 wrote to memory of 2836	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	84
PID 2908 wrote to memory of 3812	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	86
PID 2908 wrote to memory of 3812	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	86
PID 2908 wrote to memory of 3812	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	86
PID 2908 wrote to memory of 2252	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	88
PID 2908 wrote to memory of 2252	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	88
PID 2908 wrote to memory of 2252	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	88
PID 2908 wrote to memory of 228	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	90
PID 2908 wrote to memory of 228	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	90
PID 2908 wrote to memory of 228	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	90
PID 2908 wrote to memory of 1644	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	92
PID 2908 wrote to memory of 1644	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	92
PID 2908 wrote to memory of 1644	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	92
PID 2908 wrote to memory of 1852	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	95
PID 2908 wrote to memory of 1852	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	95
PID 2908 wrote to memory of 1852	2908	JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe	95
PID 348 wrote to memory of 1200	348	ajqekmpt.exe	99
PID 348 wrote to memory of 1200	348	ajqekmpt.exe	99
PID 348 wrote to memory of 1200	348	ajqekmpt.exe	99
PID 348 wrote to memory of 1200	348	ajqekmpt.exe	99
PID 348 wrote to memory of 1200	348	ajqekmpt.exe	99

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2908
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\wdwiumnm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2836
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\ajqekmpt.exe" C:\Windows\SysWOW64\wdwiumnm\
  2⤵
  - System Location Discovery: System Language Discovery
  PID:3812
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" create wdwiumnm binPath= "C:\Windows\SysWOW64\wdwiumnm\ajqekmpt.exe /d\"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe\"" type= own start= auto DisplayName= "wifi support"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:2252
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" description wdwiumnm "wifi internet conection"
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:228
- C:\Windows\SysWOW64\sc.exe
  "C:\Windows\System32\sc.exe" start wdwiumnm
  2⤵
  - Launches sc.exe
  - System Location Discovery: System Language Discovery
  PID:1644
- 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:1852
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2908 -s 1228
  2⤵
  - Program crash
  PID:3928

C:\Windows\SysWOW64\wdwiumnm\ajqekmpt.exe
C:\Windows\SysWOW64\wdwiumnm\ajqekmpt.exe /d"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_2a761bb12b50dc7ab5f4b6d5b8ab1c3f17d3f1d39f4fe26e3fe4a3cde21c89d8.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:348
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  - Sets service image path in registry
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1200
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 348 -s 536
  2⤵
  - Program crash
  PID:4832

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 452 -p 2908 -ip 2908
1⤵
PID:3224

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 348 -ip 348
1⤵
PID:1836

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\ajqekmpt.exe

Filesize
11.5MB

MD5
bfcf570b185ad5d546cdb5a4f0aac697

SHA1
eff58e7d3daf72faaf10cf80bbfbb9e99679359f

SHA256
187d66d89cb376d1b1e4bc1fa45bcef90ba58d4876e6f459c34042a37cc41576

SHA512
88e4c00e1bab29c1748e6d3f5488717d0dfc657baff6a3ea09b4111683105908a3a69cf376f144f4d8cf7d514c0261124209dfa82dc6fce310c71e2e9f2c589f

Download Submit
memory/348-11-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/348-8-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/348-13-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download
memory/1200-14-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/1200-9-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/1200-19-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/1200-20-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/1200-21-0x0000000001210000-0x0000000001225000-memory.dmp

Filesize
84KB

Download
memory/2908-2-0x0000000000A70000-0x0000000000A83000-memory.dmp

Filesize
76KB

Download
memory/2908-3-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2908-1-0x0000000000480000-0x0000000000580000-memory.dmp

Filesize
1024KB

Download
memory/2908-16-0x0000000000A70000-0x0000000000A83000-memory.dmp

Filesize
76KB

Download
memory/2908-17-0x0000000000400000-0x0000000000415000-memory.dmp

Filesize
84KB

Download
memory/2908-15-0x0000000000400000-0x0000000000467000-memory.dmp

Filesize
412KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads