tofsee | 3546db46d605f744a285fe60fcbacc6b686aa6fae4c32890b030924471e0e59f

General

Target

2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe
Size

99KB
MD5

2b126fbd0352c9ec2f7833af3d0df7ca
SHA1

3bf9cee470ad6cf126635570d89d9d9f30cef386
SHA256

3546db46d605f744a285fe60fcbacc6b686aa6fae4c32890b030924471e0e59f
SHA512

0dfb908197503bf9c1c9deeb015504d1b51d4c00857b34c3862f6c7fd9a4423acb0a068f1b63e2d6757b4c89f2d993e7913767c24d32763afd5e3c1ec43bdcc7
SSDEEP

1536:6Ti28Kx4Cm792SAYqEVvsQS5QqmHN4SMwOVth8+T96R9UB4xw7585yWvNtQ:6TJaCmgSAEsNdm26OV0uofUBCw7O5N/

Score

10^/10

tofsee evasion execution 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\yhwslkeq = "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

Processes:

netsh.exe

pid process

2524 netsh.exe

pid	process
2524	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\yhwslkeq\ImagePath = "C:\\Windows\\SysWOW64\\yhwslkeq\\baminxhu.exe"	svchost.exe

Deletes itself 1 IoCs

Processes:

svchost.exe

pid process

2588 svchost.exe
Executes dropped EXE 1 IoCs

Processes:

baminxhu.exe

pid process

2664 baminxhu.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

baminxhu.exe

description pid process target process

PID 2664 set thread context of 2588 2664 baminxhu.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

2904 sc.exe
2744 sc.exe
2544 sc.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

pid	process
2588	svchost.exe

pid	process
2664	baminxhu.exe

description	pid	process	target process
PID 2664 set thread context of 2588	2664	baminxhu.exe	svchost.exe

pid	process
2904	sc.exe
2744	sc.exe
2544	sc.exe

Suspicious use of WriteProcessMemory 30 IoCs

Processes:

2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exebaminxhu.exe

description	pid	process	target process
PID 2696 wrote to memory of 2028	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2028	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2028	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2028	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2592	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2592	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2592	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2592	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	cmd.exe
PID 2696 wrote to memory of 2904	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2904	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2904	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2904	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2744	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2744	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2744	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2744	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2544	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2544	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2544	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2696 wrote to memory of 2544	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	sc.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2664 wrote to memory of 2588	2664	baminxhu.exe	svchost.exe
PID 2696 wrote to memory of 2524	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	netsh.exe
PID 2696 wrote to memory of 2524	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	netsh.exe
PID 2696 wrote to memory of 2524	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	netsh.exe
PID 2696 wrote to memory of 2524	2696	2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe	netsh.exe

C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:2696

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C mkdir C:\Windows\SysWOW64\yhwslkeq\
2⤵
PID:2028

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /C move /Y "C:\Users\Admin\AppData\Local\Temp\baminxhu.exe" C:\Windows\SysWOW64\yhwslkeq\
2⤵
PID:2592

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" create yhwslkeq binPath= "C:\Windows\SysWOW64\yhwslkeq\baminxhu.exe /d\"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe\"" type= own start= auto DisplayName= "wifi support"
2⤵
- Launches sc.exe
PID:2904

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" description yhwslkeq "wifi internet conection"
2⤵
- Launches sc.exe
PID:2744

C:\Windows\SysWOW64\sc.exe
"C:\Windows\System32\sc.exe" start yhwslkeq
2⤵
- Launches sc.exe
PID:2544

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:2524

C:\Windows\SysWOW64\yhwslkeq\baminxhu.exe
C:\Windows\SysWOW64\yhwslkeq\baminxhu.exe /d"C:\Users\Admin\AppData\Local\Temp\2b126fbd0352c9ec2f7833af3d0df7ca_JaffaCakes118.exe"
1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:2664

C:\Windows\SysWOW64\svchost.exe
svchost.exe
2⤵
- Windows security bypass
- Sets service image path in registry
- Deletes itself
PID:2588

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

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\baminxhu.exe

Filesize
11.3MB

MD5
fb1b29c87bdf61791b9c66968b6c7fef

SHA1
a416615cf62ae4318cc38bb9aa52ad19d0bf520b

SHA256
59ff7a04a9c18f850ebdfdc74a9c02cda08468921882dc1d1f5302cb6eeb584b

SHA512
c124e7acb383e2c2f8f18a104c6a68eb56eb646acd9f1507310d3c4faa47662fdd535979ee5128ea62402446bfdf9368ddb8e361e1ef54c1db9d5e4a51168e4f

Download Submit
memory/2588-7-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2588-9-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2588-10-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2588-14-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2588-15-0x0000000000080000-0x0000000000095000-memory.dmp

Filesize
84KB

Download
memory/2664-6-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2664-11-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2696-0-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download
memory/2696-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2696-1-0x0000000001E50000-0x0000000001E51000-memory.dmp

Filesize
4KB

Download
memory/2696-13-0x0000000000400000-0x000000000041B000-memory.dmp

Filesize
108KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads