tofsee | 8044cd332ec2aa866eecbec9aa0cc0dcf304b2de5772e1101366c2960e94fa40

General

Target

fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe
Size

11.9MB
MD5

fc8f9838b702553e0ecef702ef97ce84
SHA1

881df8e9dd0ae1c881e2b388befb16db0a55c6aa
SHA256

8044cd332ec2aa866eecbec9aa0cc0dcf304b2de5772e1101366c2960e94fa40
SHA512

020dd1109c79116f50a9124cafd14a1a634c1333e77b7de621ecea245c629eb607695bf56d0d9d4ebb00de5c4c6290c50b5e877c57a1251f1315f9635cbf4cc7
SSDEEP

98304:kvjOF//////////////////////////////////////////////////////////n:O

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

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\upmmsdnk = "0"	svchost.exe

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

2476 netsh.exe

pid	process
2476	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\upmmsdnk\ImagePath = "C:\\Windows\\SysWOW64\\upmmsdnk\\bzijsodz.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2256 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

bzijsodz.exe

pid process

2740 bzijsodz.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

bzijsodz.exe

description pid process target process

PID 2740 set thread context of 2256 2740 bzijsodz.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

2032 sc.exe
2696 sc.exe
2836 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2256	svchost.exe

pid	process
2740	bzijsodz.exe

description	pid	process	target process
PID 2740 set thread context of 2256	2740	bzijsodz.exe	svchost.exe

pid	process
2032	sc.exe
2696	sc.exe
2836	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exebzijsodz.exe

description	pid	process	target process
PID 1948 wrote to memory of 1832	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 1832	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 1832	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 1832	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 3040	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 3040	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 3040	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 3040	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	cmd.exe
PID 1948 wrote to memory of 2032	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2032	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2032	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2032	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2696	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2696	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2696	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2696	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2836	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2836	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2836	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2836	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	sc.exe
PID 1948 wrote to memory of 2476	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	netsh.exe
PID 1948 wrote to memory of 2476	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	netsh.exe
PID 1948 wrote to memory of 2476	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	netsh.exe
PID 1948 wrote to memory of 2476	1948	fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe	netsh.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe
PID 2740 wrote to memory of 2256	2740	bzijsodz.exe	svchost.exe

C:\Users\Admin\AppData\Local\Temp\fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:1948

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\upmmsdnk\
2⤵
PID:1832

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\bzijsodz.exe" C:\Windows\SysWOW64\upmmsdnk\
2⤵
PID:3040

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create upmmsdnk binPath= "C:\Windows\SysWOW64\upmmsdnk\bzijsodz.exe /d\"C:\Users\Admin\AppData\Local\Temp\fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2032

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description upmmsdnk "wifi internet conection"
2⤵
- Launches sc.exe
PID:2696

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start upmmsdnk
2⤵
- Launches sc.exe
PID:2836

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:2476

C:\Windows\SysWOW64\upmmsdnk\bzijsodz.exe
C:\Windows\SysWOW64\upmmsdnk\bzijsodz.exe /d"C:\Users\Admin\AppData\Local\Temp\fc8f9838b702553e0ecef702ef97ce84_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2740

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2256

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

2

T1562

Disable or Modify System Firewall

1

T1562.004

Disable or Modify Tools

Modify Registry

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

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

Filesize
10.0MB

MD5
cf69a682117d51a0a24b76b34390cb30

SHA1
cb1b7caa85b892ea2485ae0d4926a2db062657a6

SHA256
9eef40888d0fd2ca6ff6089092f6d5fa0f15297c727aed23dd1cbaee0b057137

SHA512
cb8c81900d45bda4f55ccccf15493d6e1326e2f4d4c9a327e69ecde89f58fddfd96bfd2990aa046f0acb9509655ab7340d107488e3c1c8d5b8fa7bd209c701a0

Download Submit
memory/1948-3-0x00000000001B0000-0x00000000001C3000-memory.dmp

Filesize
76KB

Download
memory/1948-2-0x0000000000290000-0x0000000000390000-memory.dmp

Filesize
1024KB

Download
memory/1948-4-0x0000000000400000-0x0000000000C1F000-memory.dmp

Filesize
8.1MB

Download
memory/1948-7-0x0000000000400000-0x0000000000C1F000-memory.dmp

Filesize
8.1MB

Download
memory/2256-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-12-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2256-11-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-18-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-19-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-20-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2256-21-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2740-10-0x0000000000400000-0x0000000000C1F000-memory.dmp

Filesize
8.1MB

Download
memory/2740-9-0x0000000000D70000-0x0000000000E70000-memory.dmp

Filesize
1024KB

Download
memory/2740-15-0x0000000000400000-0x0000000000C1F000-memory.dmp

Filesize
8.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads