tofsee | 35e7dacaff1f83266879f8c1b8b87094b9afe181b397b3927561c74844e38d18

General

Target

633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe
Size

144KB
MD5

633a5b3f5abc1123356f2c859bcb8e50
SHA1

da720c363b880dbc5623e9584b62523fb4fba909
SHA256

35e7dacaff1f83266879f8c1b8b87094b9afe181b397b3927561c74844e38d18
SHA512

9fb9e0aa1b2d263e7eec9b065c1af0e5a72ec68f9c4cfa27a3bd46d259f1416f5c60a82cf01e80cdddeddb1463569fb5981fb36d000c8e0ffdfd20af1f353c8e
SSDEEP

3072:uaVP6HaGT5SR8fGzIpYDx1cTqO9lkS2jbxWGqXJ:uaGoEpWxSbGqZ

Score

10^/10

tofsee discovery persistence trojan

Malware Config

Extracted

Family

tofsee

C2

91.218.39.211

188.130.237.44

91.204.162.103

188.165.132.183

rgtryhbgddtyh.biz

wertdghbyrukl.ch

Signatures

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

Deletes itself 1 IoCs

pid	Process
2716	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2160	stljjdvi.exe

Loads dropped DLL 2 IoCs

pid	Process
2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe
2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4177215427-74451935-3209572229-1000\Software\Microsoft\Windows\CurrentVersion\Run\MSConfig = "\"C:\\Users\\Admin\\stljjdvi.exe\""	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2160 set thread context of 1772	2160	stljjdvi.exe	32

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 5 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	PING.EXE
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	stljjdvi.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 1 IoCs

Adversaries may check for Internet connectivity on compromised systems.

discovery

Internet Connection Discovery

T1016.001

pid	Process
2956	PING.EXE

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2956	PING.EXE

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe
2160	stljjdvi.exe

Suspicious use of WriteProcessMemory 18 IoCs

description	pid	Process	procid_target
PID 2172 wrote to memory of 2160	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	31
PID 2172 wrote to memory of 2160	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	31
PID 2172 wrote to memory of 2160	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	31
PID 2172 wrote to memory of 2160	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	31
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2160 wrote to memory of 1772	2160	stljjdvi.exe	32
PID 2172 wrote to memory of 2716	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	33
PID 2172 wrote to memory of 2716	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	33
PID 2172 wrote to memory of 2716	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	33
PID 2172 wrote to memory of 2716	2172	633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe	33
PID 2716 wrote to memory of 2956	2716	cmd.exe	35
PID 2716 wrote to memory of 2956	2716	cmd.exe	35
PID 2716 wrote to memory of 2956	2716	cmd.exe	35
PID 2716 wrote to memory of 2956	2716	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\633a5b3f5abc1123356f2c859bcb8e50_JaffaCakes118.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2172
- C:\Users\Admin\stljjdvi.exe
  "C:\Users\Admin\stljjdvi.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of UnmapMainImage
  - Suspicious use of WriteProcessMemory
  PID:2160
- - C:\Windows\SysWOW64\svchost.exe
    svchost.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:1772
- C:\Windows\SysWOW64\cmd.exe
  cmd /c ""C:\Users\Admin\AppData\Local\Temp\2443.bat" "
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2716
- - C:\Windows\SysWOW64\PING.EXE
    ping 127.0.0.1
    3⤵
    - System Location Discovery: System Language Discovery
    - System Network Configuration Discovery: Internet Connection Discovery
    - Runs ping.exe
    PID:2956

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Remote System Discovery

1

T1018

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Internet Connection Discovery

1

T1016.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\2443.bat

Filesize
266B

MD5
d0ab623051d738d5666a14820de62f34

SHA1
6b3d8b7955e7b45d82c2da848b6ab80e095b4dc2

SHA256
e79d4a1cfeadda0793ab8804adec4fc35203cae4ed17e9d5ff8d2589b3fa4a87

SHA512
7fa606acfd39a4c3251f36cd2351898c05eb2e96a721be07517244845b241b7633eee5279b36626d842731e5f6a3a6bb48456306ec8a8122dc611ef7f3905bea

Download Submit
\Users\Admin\stljjdvi.exe

Filesize
30.7MB

MD5
7ccbf5deca1720dab9f0d4f9bda363f0

SHA1
457f7e5f1886d0c2101a5af2e8447a5cc5791531

SHA256
857fdeaaab555b503fa2946e66738767a9dad63664418caac560e4f5e3a7c1a7

SHA512
1871c91937cbb271b4f8824c08414e19fa835199855520736bee4aab2310a836444a764faeb36b56e313f80dc69a46004274d1490e90aa631b461df59eec4d94

Download Submit
memory/1772-29-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-16-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-40-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-13-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-24-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-21-0x0000000000080000-0x0000000000092000-memory.dmp

Filesize
72KB

Download
memory/1772-27-0x00000000000A0000-0x00000000000A1000-memory.dmp

Filesize
4KB

Download
memory/1772-14-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2160-12-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2160-18-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2160-11-0x0000000000400000-0x000000000042A000-memory.dmp

Filesize
168KB

Download
memory/2172-0-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download
memory/2172-37-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2172-1-0x0000000000400000-0x0000000000412000-memory.dmp

Filesize
72KB

Download
memory/2172-39-0x00000000003C0000-0x00000000003D2000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads