tofsee | 1cb4511945d33d1414e7edf75f28952256df660a4d70e5599d8d0c653a9c44fc

General

Target

f27e816769871147e4862997714586f5_JaffaCakes118.exe
Size

12.7MB
MD5

f27e816769871147e4862997714586f5
SHA1

6bc7cbca3c705c9da9890a8f4f5d22d273c1105a
SHA256

1cb4511945d33d1414e7edf75f28952256df660a4d70e5599d8d0c653a9c44fc
SHA512

710979b0bbb44401ae36b4f37d62257c5616317e6a9c66b797f10dc2b7e4f02e39a36cbd54134933c8bf6c528d79926041c66cd418d27b1ed60a9c4e35af364c
SSDEEP

24576:qTmCUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUUg:9

Score

10^/10

tofsee evasion persistence trojan

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
Creates new service(s) 1 TTPs
persistence

Windows Service
T1543.003
Modifies Windows Firewall 2 TTPs 1 IoCs
evasion

Windows Service
T1543.003

Disable or Modify System Firewall
T1562.004

Processes:

netsh.exe

pid process

3352 netsh.exe

pid	process
3352	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\teichouo\ImagePath = "C:\\Windows\\SysWOW64\\teichouo\\bsovmlpt.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:

f27e816769871147e4862997714586f5_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4084619521-2220719027-1909462854-1000\Control Panel\International\Geo\Nation	f27e816769871147e4862997714586f5_JaffaCakes118.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

3860 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bsovmlpt.exe

pid process

2444 bsovmlpt.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bsovmlpt.exe

description pid process target process

PID 2444 set thread context of 3860 2444 bsovmlpt.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

2748 sc.exe
1884 sc.exe
2368 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082
Program crash 2 IoCs

Processes:

WerFault.exeWerFault.exe

pid pid_target process target process

3980 3728 WerFault.exe f27e816769871147e4862997714586f5_JaffaCakes118.exe
836 2444 WerFault.exe bsovmlpt.exe

pid	process
3860	svchost.exe

pid	process
2444	bsovmlpt.exe

description	pid	process	target process
PID 2444 set thread context of 3860	2444	bsovmlpt.exe	svchost.exe

pid	process
2748	sc.exe
1884	sc.exe
2368	sc.exe

pid	pid_target	process	target process
3980	3728	WerFault.exe	f27e816769871147e4862997714586f5_JaffaCakes118.exe
836	2444	WerFault.exe	bsovmlpt.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

f27e816769871147e4862997714586f5_JaffaCakes118.exebsovmlpt.exe

description	pid	process	target process
PID 3728 wrote to memory of 5056	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 5056	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 5056	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 4816	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 4816	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 4816	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	cmd.exe
PID 3728 wrote to memory of 2368	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 2368	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 2368	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 2748	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 2748	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 2748	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 1884	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 1884	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 1884	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	sc.exe
PID 3728 wrote to memory of 3352	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	netsh.exe
PID 3728 wrote to memory of 3352	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	netsh.exe
PID 3728 wrote to memory of 3352	3728	f27e816769871147e4862997714586f5_JaffaCakes118.exe	netsh.exe
PID 2444 wrote to memory of 3860	2444	bsovmlpt.exe	svchost.exe
PID 2444 wrote to memory of 3860	2444	bsovmlpt.exe	svchost.exe
PID 2444 wrote to memory of 3860	2444	bsovmlpt.exe	svchost.exe
PID 2444 wrote to memory of 3860	2444	bsovmlpt.exe	svchost.exe
PID 2444 wrote to memory of 3860	2444	bsovmlpt.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\f27e816769871147e4862997714586f5_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f27e816769871147e4862997714586f5_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3728

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\teichouo\
2⤵
PID:5056

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bsovmlpt.exe" C:\Windows\SysWOW64\teichouo\
2⤵
PID:4816

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create teichouo binPath= "C:\Windows\SysWOW64\teichouo\bsovmlpt.exe /d\"C:\Users\Admin\AppData\Local\Temp\f27e816769871147e4862997714586f5_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2368

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description teichouo "wifi internet conection"
2⤵
- Launches sc.exe
PID:2748

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start teichouo
2⤵
- Launches sc.exe
PID:1884

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
PID:3352

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 3728 -s 644
2⤵
- Program crash
PID:3980

C:\Windows\SysWOW64\teichouo\bsovmlpt.exe
C:\Windows\SysWOW64\teichouo\bsovmlpt.exe /d"C:\Users\Admin\AppData\Local\Temp\f27e816769871147e4862997714586f5_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2444

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Sets service image path in registry
- Deletes itself
PID:3860

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 2444 -s 508
2⤵
- Program crash
PID:836

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 3728 -ip 3728
1⤵
PID:1844

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 556 -p 2444 -ip 2444
1⤵
PID:3012

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

Create or Modify System Process

2

T1543

Windows Service

2

T1543.003

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

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
12.1MB

MD5
7b8119dcb72359cc3f10e908abdf5c8c

SHA1
c47a0b7d22d21d1b42288bd581f40c9e674b8330

SHA256
e07fbac69955586fd1e923bf50af719de00640048d6ad8ae7c4c6efe7b56ff22

SHA512
d8beff771b58fcb9c8e37ca89de7d5007abeba040143572b24c87c030acfe0285c0e14d92565708af765e07ce206b460ca8f21122e04a517f6133049c5bd28e5

Download Submit
memory/2444-9-0x0000000004260000-0x0000000004360000-memory.dmp

Filesize
1024KB

Download
memory/2444-16-0x0000000000400000-0x00000000040F8000-memory.dmp

Filesize
61.0MB

Download
memory/3728-1-0x0000000004380000-0x0000000004480000-memory.dmp

Filesize
1024KB

Download
memory/3728-2-0x00000000041D0000-0x00000000041E3000-memory.dmp

Filesize
76KB

Download
memory/3728-6-0x0000000000400000-0x00000000040F8000-memory.dmp

Filesize
61.0MB

Download
memory/3728-7-0x00000000041D0000-0x00000000041E3000-memory.dmp

Filesize
76KB

Download
memory/3860-10-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3860-14-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3860-15-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download
memory/3860-17-0x0000000000810000-0x0000000000825000-memory.dmp

Filesize
84KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads